v0.81.0

fix crash tryng to decrypt/parse gossip

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,32 @@
+---
+name: Bug report
+about: Create a report to help us improve
+title: "[BUG]"
+labels: ''
+assignees: ''
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**To Reproduce**
+Steps to reproduce the behavior:
+1. Go to '...'
+2. Click on '....'
+3. Scroll down to '....'
+4. See error
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Video and Screenshots**
+If applicable, add a video and/or screenshots to help explain your problem.
+
+**Device (please complete the following information):**
+ - Phone Brand/Model [e.g. Pixel 7 Pro]: 
+ - Android Version [e.g. 33]: 
+ - App Version [e.g. v0.20.3]: 
+
+**Bounty (in Bitcoin sats) offered for a solution**
+Incentivize developers to work on your issue. Describe clear milestones to claim payment.

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,20 @@
+---
+name: Feature request
+about: Suggest an idea for this project
+title: "[FEATURE]"
+labels: ''
+assignees: ''
+
+---
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Bounty (in Bitcoin sats) offered for the implementation**
+Incentivize developers to work on your feature. Describe clear milestones to claim payment. 
+
+**Additional context**
+Add any other context, video, or screenshots about the feature request here.

.github/workflows/build.yml

@@ -14,10 +14,10 @@ jobs:
     steps:
       - uses: actions/checkout@v2
 
-      - name: Set up JDK 11
+      - name: Set up JDK 17
         uses: actions/setup-java@v1
         with:
-          java-version: 11
+          java-version: 17
 
       - name: Cache gradle
         uses: actions/cache@v1
@@ -27,6 +27,9 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-gradle-
 
+      - name: Linter (gradle)
+        run: ./gradlew ktlintCheck
+
       - name: Test (gradle)
         run: ./gradlew test --no-daemon
 

.github/workflows/create-release.yml

@@ -12,10 +12,10 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v2
 
-      - name: Set up JDK 11
+      - name: Set up JDK 17
         uses: actions/setup-java@v1
         with:
-          java-version: 11
+          java-version: 17
 
       - name: Cache gradle
         uses: actions/cache@v1
@@ -28,22 +28,40 @@ jobs:
       - name: Build AAB
         run: ./gradlew clean bundleRelease --stacktrace
 
-      - name: Sign AAB
+      - name: Sign AAB (Google Play)
         uses: r0adkll/sign-android-release@v1
         with:
-          releaseDirectory: app/build/outputs/bundle/release
+          releaseDirectory: app/build/outputs/bundle/playRelease
+          signingKeyBase64: ${{ secrets.SIGNING_KEY }}
+          alias: ${{ secrets.KEY_ALIAS }}
+          keyStorePassword: ${{ secrets.KEY_STORE_PASSWORD }}
+          keyPassword: ${{ secrets.KEY_PASSWORD }}
+
+      - name: Sign AAB (F-Droid)
+        uses: r0adkll/sign-android-release@v1
+        with:
+          releaseDirectory: app/build/outputs/bundle/fdroidRelease
           signingKeyBase64: ${{ secrets.SIGNING_KEY }}
           alias: ${{ secrets.KEY_ALIAS }}
           keyStorePassword: ${{ secrets.KEY_STORE_PASSWORD }}
           keyPassword: ${{ secrets.KEY_PASSWORD }}
 
       - name: Build APK
-        run: ./gradlew assembleRelease --stacktrace --no-daemon
+        run: ./gradlew assembleRelease --stacktrace
 
-      - name: Sign APK
+      - name: Sign APK (Google Play)
         uses: r0adkll/sign-android-release@v1
         with:
-          releaseDirectory: app/build/outputs/apk/release
+          releaseDirectory: app/build/outputs/apk/play/release
+          signingKeyBase64: ${{ secrets.SIGNING_KEY }}
+          alias: ${{ secrets.KEY_ALIAS }}
+          keyStorePassword: ${{ secrets.KEY_STORE_PASSWORD }}
+          keyPassword: ${{ secrets.KEY_PASSWORD }}
+
+      - name: Sign APK (F-Droid)
+        uses: r0adkll/sign-android-release@v1
+        with:
+          releaseDirectory: app/build/outputs/apk/fdroid/release
           signingKeyBase64: ${{ secrets.SIGNING_KEY }}
           alias: ${{ secrets.KEY_ALIAS }}
           keyStorePassword: ${{ secrets.KEY_STORE_PASSWORD }}
@@ -58,26 +76,142 @@ jobs:
           tag_name: ${{ github.ref }}
           release_name: Release ${{ github.ref }}
           draft: false
-          prerelease: false
+          prerelease: true
 
-      - name: Upload APK Asset
-        id: upload-release-asset-apk
-        uses: actions/upload-release-asset@v1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          upload_url: ${{ steps.create_release.outputs.upload_url }} 
-          asset_path: app/build/outputs/apk/release/app-release-unsigned-signed.apk
-          asset_name: app-release-${{ github.ref_name }}.apk
-          asset_content_type: application/zip
-
-      - name: Upload AAB Asset
-        id: upload-release-asset-aab
+      # Google Play APK
+      - name: Upload Play APK Universal Asset
+        id: upload-release-asset-play-universal-apk
         uses: actions/upload-release-asset@v1
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         with:
           upload_url: ${{ steps.create_release.outputs.upload_url }}
-          asset_path: app/build/outputs/bundle/release/app-release.aab
-          asset_name: app-release-${{ github.ref_name }}.aab
+          asset_path: app/build/outputs/apk/play/release/app-play-universal-release-unsigned-signed.apk
+          asset_name: amethyst-googleplay-universal-${{ github.ref_name }}.apk
           asset_content_type: application/zip
+
+      - name: Upload Play APK x86 Asset
+        id: upload-release-asset-play-x86-apk
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: app/build/outputs/apk/play/release/app-play-x86-release-unsigned-signed.apk
+          asset_name: amethyst-googleplay-x86-${{ github.ref_name }}.apk
+          asset_content_type: application/zip
+
+      - name: Upload Play APK x86_64 Asset
+        id: upload-release-asset-play-x86-64-apk
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: app/build/outputs/apk/play/release/app-play-x86_64-release-unsigned-signed.apk
+          asset_name: amethyst-googleplay-x86_64-${{ github.ref_name }}.apk
+          asset_content_type: application/zip
+
+      - name: Upload Play APK arm64-v8a Asset
+        id: upload-release-asset-play-arm64-v8a-apk
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: app/build/outputs/apk/play/release/app-play-arm64-v8a-release-unsigned-signed.apk
+          asset_name: amethyst-googleplay-arm64-v8a-${{ github.ref_name }}.apk
+          asset_content_type: application/zip
+
+      - name: Upload Play APK armeabi-v7a Asset
+        id: upload-release-asset-play-armeabi-v7a-apk
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: app/build/outputs/apk/play/release/app-play-armeabi-v7a-release-unsigned-signed.apk
+          asset_name: amethyst-googleplay-armeabi-v7a-${{ github.ref_name }}.apk
+          asset_content_type: application/zip
+
+      # F-Droid APK
+      - name: Upload F-Droid APK Universal Asset
+        id: upload-release-asset-fdroid-universal-apk
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: app/build/outputs/apk/fdroid/release/app-fdroid-universal-release-unsigned-signed.apk
+          asset_name: amethyst-fdroid-universal-${{ github.ref_name }}.apk
+          asset_content_type: application/zip
+
+      - name: Upload F-Droid APK x86 Asset
+        id: upload-release-asset-fdroid-x86-apk
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: app/build/outputs/apk/fdroid/release/app-fdroid-x86-release-unsigned-signed.apk
+          asset_name: amethyst-fdroid-x86-${{ github.ref_name }}.apk
+          asset_content_type: application/zip
+
+      - name: Upload F-Droid APK x86_64 Asset
+        id: upload-release-asset-fdroid-x86-64-apk
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: app/build/outputs/apk/fdroid/release/app-fdroid-x86_64-release-unsigned-signed.apk
+          asset_name: amethyst-fdroid-x86_64-${{ github.ref_name }}.apk
+          asset_content_type: application/zip
+
+      - name: Upload F-Droid APK arm64-v8a Asset
+        id: upload-release-asset-fdroid-arm64-v8a-apk
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: app/build/outputs/apk/fdroid/release/app-fdroid-arm64-v8a-release-unsigned-signed.apk
+          asset_name: amethyst-fdroid-arm64-v8a-${{ github.ref_name }}.apk
+          asset_content_type: application/zip
+
+      - name: Upload F-Droid APK armeabi-v7a Asset
+        id: upload-release-asset-fdroid-armeabi-v7a-apk
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: app/build/outputs/apk/fdroid/release/app-fdroid-armeabi-v7a-release-unsigned-signed.apk
+          asset_name: amethyst-fdroid-armeabi-v7a-${{ github.ref_name }}.apk
+          asset_content_type: application/zip
+
+
+
+      # Google Play AAB
+      - name: Upload Google Play AAB Asset
+        id: upload-release-asset-play-aab
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: app/build/outputs/bundle/playRelease/app-play-release.aab
+          asset_name: amethyst-googleplay-${{ github.ref_name }}.aab
+          asset_content_type: application/zip
+
+      # FDroid AAB
+      - name: Upload F-Droid AAB Asset
+        id: upload-release-asset-fdroid-aab
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: app/build/outputs/bundle/fdroidRelease/app-fdroid-release.aab
+          asset_name: amethyst-fdroid-${{ github.ref_name }}.aab
+          asset_content_type: application/zip

.github/workflows/crowdin.yml

@@ -0,0 +1,30 @@
+name: Crowdin Action
+
+on:
+  push:
+    # paths: ["app/src/main/res/**/strings.xml"] // removes filter to allow downloads at any moment.
+    branches: [ main ]
+
+jobs:
+  synchronize-with-crowdin:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: crowdin action
+        uses: crowdin/github-action@v1
+        with:
+          upload_sources: true
+          upload_translations: true
+          download_translations: true
+          localization_branch_name: l10n_crowdin_translations
+          create_pull_request: true
+          pull_request_title: 'New Crowdin Translations'
+          pull_request_body: 'New Crowdin translations by [Crowdin GH Action](https://github.com/crowdin/github-action)'
+          pull_request_base_branch_name: 'main'
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          CROWDIN_PROJECT_ID: ${{ secrets.CROWDIN_PROJECT_ID }}
+          CROWDIN_PERSONAL_TOKEN: ${{ secrets.CROWDIN_PERSONAL_TOKEN }}

.gitignore

@@ -1,5 +1,3 @@
-*.iml
-.gradle
 /local.properties
 /.idea/caches
 /.idea/libraries
@@ -7,12 +5,12 @@
 /.idea/workspace.xml
 /.idea/navEditor.xml
 /.idea/assetWizardSettings.xml
+/.idea/androidTestResultsUserPreferences.xml
+/.idea/deploymentTargetDropDown.xml
 .DS_Store
 /build
 /captures
-.externalNativeBuild
 .cxx
-local.properties
 
 
 # Built application files
@@ -35,6 +33,7 @@ out/
 # release/
 
 # Gradle files
+.gradle
 .gradle/
 build/
 
@@ -47,25 +46,51 @@ proguard/
 # Log Files
 *.log
 
-# Android Studio Navigation editor temp files
-.navigation/
-
-# Android Studio captures folder
+# Android Studio
+/*/build/
+/*/local.properties
+/*/out
+/*/*/build
+/*/*/production
 captures/
+.navigation/
+*.ipr
+*~
+*.swp
 
 # IntelliJ
 *.iml
-.idea/workspace.xml
-.idea/tasks.xml
-.idea/gradle.xml
-.idea/assetWizardSettings.xml
-.idea/dictionaries
-.idea/libraries
-# Android Studio 3 in .gitignore file.
-.idea/caches
-.idea/modules.xml
-# Comment next line if keeping position of elements in Navigation Editor is relevant for you
-.idea/navEditor.xml
+*.iws
+/out/
+deploymentTargetDropdown.xml
+render.experimental.xml
+
+# User-specific configurations
+.idea/**/caches/
+.idea/**/libraries/
+.idea/**/shelf/
+.idea/**/codeStyles
+.idea/**/workspace.xml
+.idea/**/tasks.xml
+.idea/**/.name
+.idea/**/compiler.xml
+.idea/**/copyright/profiles_settings.xml
+.idea/**/encodings.xml
+.idea/**/misc.xml
+.idea/**/modules.xml
+.idea/**/scopes/scope_settings.xml
+.idea/**/dictionaries
+.idea/**/vcs.xml
+.idea/**/jsLibraryMappings.xml
+.idea/**/datasources.xml
+.idea/**/dataSources.ids
+.idea/**/sqlDataSources.xml
+.idea/**/dynamic.xml
+.idea/**/uiDesigner.xml
+.idea/**/assetWizardSettings.xml
+.idea/**/gradle.xml
+.idea/**/jarRepositories.xml
+.idea/**/navEditor.xml
 
 # Keystore files
 # Uncomment the following lines if you do not want to check your keystore files in.

.idea/.gitignore

@@ -1,3 +0,0 @@
-# Default ignored files
-/shelf/
-/workspace.xml

.idea/compiler.xml

@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="CompilerConfiguration">
-    <bytecodeTargetLevel target="11" />
-  </component>
-</project>

.idea/inspectionProfiles/Project_Default.xml

@@ -3,35 +3,30 @@
     <option name="myName" value="Project Default" />
     <inspection_tool class="PreviewAnnotationInFunctionWithParameters" enabled="true" level="ERROR" enabled_by_default="true">
       <option name="composableFile" value="true" />
-      <option name="previewFile" value="true" />
+    </inspection_tool>
+    <inspection_tool class="PreviewApiLevelMustBeValid" enabled="true" level="ERROR" enabled_by_default="true">
+      <option name="composableFile" value="true" />
     </inspection_tool>
     <inspection_tool class="PreviewDimensionRespectsLimit" enabled="true" level="WARNING" enabled_by_default="true">
       <option name="composableFile" value="true" />
-      <option name="previewFile" value="true" />
     </inspection_tool>
     <inspection_tool class="PreviewFontScaleMustBeGreaterThanZero" enabled="true" level="ERROR" enabled_by_default="true">
       <option name="composableFile" value="true" />
-      <option name="previewFile" value="true" />
     </inspection_tool>
     <inspection_tool class="PreviewMultipleParameterProviders" enabled="true" level="ERROR" enabled_by_default="true">
       <option name="composableFile" value="true" />
-      <option name="previewFile" value="true" />
     </inspection_tool>
     <inspection_tool class="PreviewMustBeTopLevelFunction" enabled="true" level="ERROR" enabled_by_default="true">
       <option name="composableFile" value="true" />
-      <option name="previewFile" value="true" />
     </inspection_tool>
     <inspection_tool class="PreviewNeedsComposableAnnotation" enabled="true" level="ERROR" enabled_by_default="true">
       <option name="composableFile" value="true" />
-      <option name="previewFile" value="true" />
     </inspection_tool>
     <inspection_tool class="PreviewNotSupportedInUnitTestFiles" enabled="true" level="ERROR" enabled_by_default="true">
       <option name="composableFile" value="true" />
-      <option name="previewFile" value="true" />
     </inspection_tool>
     <inspection_tool class="PreviewPickerAnnotation" enabled="true" level="ERROR" enabled_by_default="true">
       <option name="composableFile" value="true" />
-      <option name="previewFile" value="true" />
     </inspection_tool>
   </profile>
 </component>

.idea/kotlinc.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="KotlinJpsPluginSettings">
+    <option name="version" value="1.9.10" />
+  </component>
+</project>

.idea/misc.xml

@@ -1,10 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ExternalStorageConfigurationManager" enabled="true" />
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" project-jdk-name="1.8" project-jdk-type="JavaSDK">
-    <output url="file://$PROJECT_DIR$/build/classes" />
-  </component>
-  <component name="ProjectType">
-    <option name="id" value="Android" />
-  </component>
-</project>

PRIVACY.md

@@ -0,0 +1,48 @@
+# Amethyst Privacy Policy and Terms of Use
+
+## Privacy Policy
+
+Effective as of Jun 12, 2023
+
+The Amethyst app for Android does not collect or process any personal information from its users. The app is used to connect to third-party Nostr servers (also called Relays) that may or may not collect personal information and are not covered by this privacy policy. Each third-party relay server comes equipped with its own privacy policy and terms of use that can be viewed through the app or through that server's website. The developers of this open-source project or maintainers of the distribution channels (app stores) do not have access to the data located in the user's phone. Accounts are fully maintained by the user. We do not have control over them. 
+
+The app may collect a per-device token, your public key, and a preferred Relay to connect to and provide push notification services through Google's Firebase Cloud Messaging. Other than that, the data from connected accounts are only stored locally on the device when it's required for the functionality and performance of Amethyst. This data is strictly confidential and cannot be accessed by other apps (on non-rooted devices). Phone data can be deleted by clearing Amethyst's local storage or uninstalling the app.
+
+Amethyst offers a few options to upload pictures and videos in order to post them online. You can choose the server at your discretion. Similar to relays, such services are independent of the app and have their own privacy policy and terms of use. 
+
+### Privacy with Relays services
+
+Your internet protocol (IP) address is exposed to the relays you connect to. If you want to improve your privacy, consider utilizing a service that masks your IP address (e.g. a VPN) from trackers online.
+
+The relay can also see which public keys you are using and what information you are requesting from the network. Your public key is tied to your IP address and your relay filters.
+
+Relays have all your data in raw text. They know your IP, your name, your location (guessed from IP), your pub key, all your contacts, and other relays, and can read every action you do (post, like, boost, quote, report, etc) with the exception of the content inside Private Zaps and Private DMs.
+
+While the content of direct messages (DMs) is only visible to you, and your DM Nostr counterparty, everyone can see when you and your counterparty are DM-ing each other. Image uploads in the DM screen use one of the chosen image servers and simply paste the image link on the DM text. Your uploaded pictures are available to anyone with that direct link. 
+
+### Visibility & Permanence of Your Content on Nostr Relays
+
+#### Information Visibility
+
+Content that you share can be shared with other relays by any user of the network. 
+Information that you share is publicly visible to anyone reading from relays that have your information. Your information may also be visible to Nostr users who do not share relays with you.
+
+#### Information Permanence
+
+Information shared on Nostr should be assumed permanent for privacy purposes. There is no way to guarantee deleting or editing any content once posted.
+
+## Terms of Use
+
+### For versions downloaded from Google's Play Store
+
+You cannot use the Amethyst app for Android to submit Objectionable Content to relays. Objectionable Content includes but is not limited to: (i) sexually explicit materials; (ii) obscene, defamatory, libelous, slanderous, violent and/or unlawful content or profanity; (iii) content that infringes upon the rights of any third party, including copyright, trademark, privacy, publicity or other personal or proprietary rights, or that is deceptive or fraudulent; (iv) content that promotes the use or sale of illegal or regulated substances, tobacco products, ammunition and/or firearms; and (v) illegal content related to gambling.
+
+### For versions downloaded from F-Droid
+
+We do not control the distribution of the application in F-Droid. Legal matters should be resolved between the user and F-Droid. 
+
+## Other Notes
+
+We reserve the right to modify this Privacy Policy and Terms of Use at any time. Any modifications to this document will be effective upon our posting of the new terms and/or upon implementation of the new changes on the Service (or as otherwise indicated at the time of posting). In all cases, your continued use of the app after the posting of any modified Privacy Policy and Terms of Use indicates your acceptance of the terms of the modified Privacy Policy and/or Terms of Use.
+
+If you have any questions about Amethyst or this privacy policy, you can send a message to amethyst@vitorpamplona.com

README.md

@@ -4,20 +4,101 @@
 
 Amethyst brings the best social network to your Android phone. Just insert your Nostr private key and start posting. 
 
+[<img src="./docs/design/obtainium.png"
+alt="Get it on Obtaininum"
+height="80">](https://github.com/ImranR98/Obtainium)
+[<img src="https://github.com/machiav3lli/oandbackupx/raw/034b226cea5c1b30eb4f6a6f313e4dadcbb0ece4/badge_github.png" alt="Get it on GitHub"
+height="80">](https://github.com/vitorpamplona/amethyst/releases)
+[<img src="https://fdroid.gitlab.io/artwork/badge/get-it-on.png"
+     alt="Get it on F-Droid"
+     height="80">](https://f-droid.org/packages/com.vitorpamplona.amethyst/)
+[<img src="https://play.google.com/intl/en_us/badges/images/generic/en-play-badge.png"
+     alt="Get it on Google Play"
+     height="80">](https://play.google.com/store/apps/details?id=com.vitorpamplona.amethyst)
+
 # Current Features
 
-- [x] Account Management
+- [x] Event Builders / WebSocket Subscriptions (NIP-01)
 - [x] Home Feed
 - [x] Notifications Feed
 - [x] Global Feed
-- [x] Reactions (like, boost, reply)
-- [x] Image Preview
-- [x] Url Preview
+- [x] Replies and mentions (NIP-10)
+- [x] Reactions (NIP-25)
+- [x] Reposts (NIP-18)
+- [x] Image/Video/Url/LnInvoice Previews
 - [x] View Threads
-- [ ] Private Messages
-- [ ] Communities
-- [ ] Profile Edit
-- [ ] Relay Edit
+- [x] Private Messages (NIP-04)
+- [x] User Profiles (edit/follow/unfollow - NIP-02)
+- [x] Public Chats (NIP-28)
+- [x] Bech Encoding support (NIP-19)
+- [x] Notification Dots
+- [x] Reporting and Hide User capability (NIP-56)
+- [x] Automatic Translations
+- [x] Relay Sets (home, dms, public chats, global)
+- [x] User/Note Tagging (NIP-08, NIP-10)
+- [x] Lightning Tips
+- [x] Zaps (private, public, anon, non-zap) (NIP-57)
+- [x] URI Support (NIP-21)
+- [x] Created_at Limits (NIP-22)
+- [x] Event Deletion (NIP-09)
+- [x] Nostr Address (NIP-05)
+- [x] Long-form Content (NIP-23)
+- [x] Parameterized Replaceable Events (NIP-33)
+- [x] Online Relay Search (NIP-50)
+- [x] Internationalization
+- [x] Badges (NIP-58)
+- [x] Hashtag Following and Custom Hashtags
+- [x] Polls (NIP-69)
+- [x] Verifiable static content in URLs (NIP-94)
+- [x] Login with QR
+- [x] Wallet Connect API (NIP-47)
+- [x] Accessible uploads
+- [x] Bounty support (nostrbounties.com)
+- [x] De-googled F-Droid flavor
+- [x] External Identity Support (NIP-39)
+- [x] Multiple Accounts
+- [x] Markdown Support
+- [x] Relay Authentication (NIP-42)
+- [x] Content stored in relays themselves (NIP-95)
+- [x] Custom Emoji (NIP-30)
+- [x] Zap Forwarding (NIP-57)
+- [x] Text Note References (NIP-27)
+- [x] Audio Tracks (zapstr.live) (Kind:31337)
+- [x] Push Notifications (Zaps and Messages)
+- [x] Generic Tags (NIP-12)
+- [x] Sensitive Content (NIP-36)
+- [x] View Individual Reactions (Like, Boost, Zaps, Reports) per Post
+- [x] Recommended Application Handlers (NIP-89)
+- [x] Events with a Subject (NIP-14)
+- [x] Generic Reposts (kind:16)
+- [x] Live Activities & Live Chats (NIP-53)
+- [x] Relay Pages (NIP-11)
+- [x] HTTP Auth (NIP-98)
+- [x] Zapraiser (NIP-TBD)
+- [x] Moderated Communities (NIP-72)
+- [x] Emoji Packs (Kind:30030)
+- [x] Personal Emoji Lists (Kind:10030)
+- [x] Classifieds (Kind:30403)
+- [x] Private Messages and Small Groups (NIP-24)
+- [x] Gift Wraps & Seals (NIP-59)
+- [x] Versioned Encrypted Payloads (NIP-44)
+- [x] Expiration Support (NIP-40)
+- [x] Status Event (NIP-38)
+- [ ] Marketplace (NIP-15)
+- [ ] Image/Video Capture in the app
+- [ ] Local Database
+- [ ] Bookmarks, Pinned Posts, Muted Events (NIP-51)
+- [ ] Proof of Work in the Phone (NIP-13, NIP-20)
+- [ ] Workspaces
+- [ ] Infinity Scroll
+- [ ] Relay List Metadata (NIP-65)
+- [ ] Signing Requests (NIP-46)
+- [ ] Delegated Event Signing (NIP-26)
+- [ ] Account Creation / Backup Guidance
+- [ ] Mnemonic seed phrase (NIP-06)
+- [ ] Message Sent feedback (NIP-20)
+- [ ] OpenTimestamps Attestations (NIP-03)
+
 
 # Development Overview
 
@@ -25,7 +106,7 @@ Amethyst brings the best social network to your Android phone. Just insert your
 
 This is a native Android app made with Kotlin and Jetpack Compose.
 The app uses a modified version of the [nostrpostrlib](https://github.com/Giszmo/NostrPostr/tree/master/nostrpostrlib) to talk to Nostr relays.
-The overall architecture consists in the UI, which uses the usual State/ViewModel/Composition, the service layer that connects with Nostr relays,
+The overall architecture consists of the UI, which uses the usual State/ViewModel/Composition, the service layer that connects with Nostr relays,
 and the model/repository layer, which keeps all Nostr objects in memory, in a full OO graph.
 
 The repository layer stores Nostr Events as Notes and Users separately. Those classes use LiveData objects to
@@ -43,7 +124,7 @@ Lastly, the user's account information (priv key/pub key) is stored in the Andro
 ## Setup
 
 Make sure to have the following pre-requisites installed:
-1. Java 11
+1. Java 17
 2. Android Studio
 3. Android 8.0+ Phone or Emulation setup
 
@@ -66,9 +147,22 @@ Build the app:
 ./gradlew connectedAndroidTest
 ```
 
-## Installing on device
+## Linting
 ```bash
-./gradlew installDebug
+./gradlew ktlintCheck
+./gradlew ktlintFormat
+```
+
+## Installing on device
+
+For the F-Droid build:
+```bash
+./gradlew installFdroidDebug
+```
+
+For the Play build:
+```bash
+./gradlew installPlayDebug
 ```
 
 ## How to Deploy
@@ -78,7 +172,7 @@ Build the app:
 keytool -genkey -v -keystore <my-release-key.keystore> -alias <alias_name> -keyalg RSA -keysize 2048 -validity 10000
 openssl base64 < <my-release-key.keystore> | tr -d '\n' | tee some_signing_key.jks.base64.txt
 ```
-2. Create 4 Secret Key variables on your GitHub repository and fill in with the signing key information
+2. Create four Secret Key variables on your GitHub repository and fill in the signing key information
     - `KEY_ALIAS` <- `<alias_name>`
     - `KEY_PASSWORD` <- `<your password>`
     - `KEY_STORE_PASSWORD` <- `<your key store password>`
@@ -90,10 +184,40 @@ openssl base64 < <my-release-key.keystore> | tr -d '\n' | tee some_signing_key.j
 7. Add your CHANGE LOG to the description of the new release
 8. Download the `aab` file and upload it to the` PlayStore.
 
+# Privacy on Relays & nostr
+Your internet protocol (IP) address is exposed to the relays you connect to. If you want to improve your privacy, consider utilizing a service that masks your IP address (e.g. a VPN) from trackers online. 
+
+The relay also learns which public keys you are requesting, meaning your public key will be tied to your IP address.
+
+Relays have all your data in raw text. They know your IP, your name, your location (guessed from IP), your pub key, all your contacts, and other relays, and can read every action you do (post, like, boost, quote, report, etc) with the exception of Private Zaps and Private DMs.
+
+# DM Privacy #
+While the content of direct messages (DMs) is only visible to you and your DM counterparty, everyone can see when you and your counterparty DM each other.
+
+# Visibility & Permanence of Your Content on nostr
+## Information Visibility ##
+Content that you share can be shared to other relays. 
+Information that you share publicly is visible to anyone reading from relays that have your information. Your information may also be visible to nostr users who do not share relays with you.
+
+## Information Permanence ##
+Information shared on nostr should be assumed permanent for privacy purposes. There is no way to guarantee edit or deletion of any content once posted. 
+
+# Screenshots
+
+| Home Feed                                 | Messages                                     | Live Streams                                    | Notifications                                          |
+|-------------------------------------------|----------------------------------------------|-------------------------------------------------|--------------------------------------------------------|
+| ![Home Feed](./docs/screenshots/home.png) | ![Messages](./docs/screenshots/messages.png) | ![Live Streams](./docs/screenshots/replies.png) | ![Notifications](./docs/screenshots/notifications.png) |
+
 # Contributing
 
 [Issues](https://github.com/vitorpamplona/amethyst/issues) and [pull requests](https://github.com/vitorpamplona/amethyst/pulls) are very welcome.
 
+## Contributors
+
+<a align="center" href="https://github.com/vitorpamplona/amethyst/graphs/contributors">
+  <img src="https://contrib.rocks/image?repo=vitorpamplona/amethyst" />
+</a>
+
 # MIT License
 
 Copyright (c) 2023 Vitor Pamplona
@@ -114,4 +238,4 @@ FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
+SOFTWARE.

app/build.gradle

@@ -1,107 +1,313 @@
 plugins {
     id 'com.android.application'
     id 'org.jetbrains.kotlin.android'
+    id 'org.jlleitschuh.gradle.ktlint' version "11.6.1"
+    id 'com.google.gms.google-services'
 }
 
 android {
     namespace 'com.vitorpamplona.amethyst'
-    compileSdk 33
+    compileSdk 34
 
     defaultConfig {
         applicationId "com.vitorpamplona.amethyst"
         minSdk 26
-        targetSdk 33
-        versionCode 3
-        versionName "0.3"
+        targetSdk 34
+        versionCode 331
+        versionName "0.81.0"
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         vectorDrawables {
             useSupportLibrary true
         }
+        resourceConfigurations += [
+                'ar',
+                'bn-rBD',
+                'cs',
+                'cy-rGB',
+                'da-rDK',
+                'de',
+                'el-rGB',
+                'en-rGB',
+                'eo',
+                'es',
+                'es-rES',
+                'es-rMX',
+                'es-rUS',
+                'et-rEE',
+                'fa',
+                'fi-rFI',
+                'fo-rFO',
+                'fr',
+                'fr-rCA',
+                'gu-rIN',
+                'hi-rIN',
+                'hr-rHR',
+                'hu',
+                'in',
+                'in-rID',
+                'it-rIT',
+                'iw-rIL',
+                'ja',
+                'kk-rKZ',
+                'ko-rKR',
+                'ks-rIN',
+                'ku-rTR',
+                'lt-rLT',
+                'ne-rNP',
+                'night',
+                'nl',
+                'nl-rBE',
+                'pcm-rNG',
+                'pl-rPL',
+                'pt-rBR',
+                'pt-rPT',
+                'ru',
+                'ru-rUA',
+                'sa-rIN',
+                'sl-rSI',
+                'so-rSO',
+                'sr-rSP',
+                'ss-rZA',
+                'sv-rSE',
+                'sw-rKE',
+                'sw-rTZ',
+                'ta',
+                'th',
+                'tr',
+                'uk',
+                'ur-rIN',
+                'uz-rUZ',
+                'vi-rVN',
+                'zh',
+                'zh-rCN',
+                'zh-rHK',
+                'zh-rSG',
+                'zh-rTW'
+        ]
     }
 
     buildTypes {
         release {
-            minifyEnabled false
-            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+            //signingConfig signingConfigs.debug
+            proguardFiles getDefaultProguardFile("proguard-android-optimize.txt"), 'proguard-rules.pro'
+            minifyEnabled true
+            resValue "string", "app_name", "@string/app_name_release"
+        }
+        debug {
+            applicationIdSuffix '.debug'
+            versionNameSuffix '-DEBUG'
+            resValue "string", "app_name", "@string/app_name_debug"
         }
     }
+
+    flavorDimensions = ["channel"]
+
+    productFlavors {
+        play {
+            getIsDefault().set(true)
+            dimension "channel"
+        }
+
+        fdroid {
+            dimension "channel"
+        }
+    }
+
+    splits {
+        abi {
+            enable true
+            reset()
+            include "x86", "x86_64", "arm64-v8a", "armeabi-v7a"
+            universalApk true
+        }
+    }
+
     compileOptions {
-        sourceCompatibility JavaVersion.VERSION_11
-        targetCompatibility JavaVersion.VERSION_11
+        sourceCompatibility JavaVersion.VERSION_17
+        targetCompatibility JavaVersion.VERSION_17
     }
+
     kotlinOptions {
-        jvmTarget = '11'
+        jvmTarget = '17'
     }
+
     buildFeatures {
         compose true
     }
+
     composeOptions {
-        kotlinCompilerExtensionVersion '1.3.2'
+        kotlinCompilerExtensionVersion "1.5.3"
     }
+
     packagingOptions {
         resources {
             excludes += '/META-INF/{AL2.0,LGPL2.1}'
         }
     }
+
+    lint {
+        disable 'MissingTranslation'
+    }
+
+    testOptions {
+        unitTests.returnDefaultValues = true
+    }
 }
 
 dependencies {
-    implementation 'androidx.core:core-ktx:1.9.0'
-    implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.5.1'
-    implementation 'androidx.activity:activity-compose:1.6.1'
+    implementation project(path: ':quartz')
+    implementation "androidx.core:core-ktx:$core_ktx_version"
+    implementation 'androidx.activity:activity-compose:1.8.1'
     implementation "androidx.compose.ui:ui:$compose_ui_version"
     implementation "androidx.compose.ui:ui-tooling-preview:$compose_ui_version"
-    implementation 'androidx.compose.material:material:1.3.1'
+
+    // Needs this to open gallery / image upload
+    implementation "androidx.fragment:fragment-ktx:$fragment_version"
 
     // Navigation
-    implementation("androidx.navigation:navigation-compose:$nav_version")
-    implementation 'androidx.lifecycle:lifecycle-runtime-compose:2.6.0-alpha03'
-    implementation 'androidx.compose.runtime:runtime-livedata:1.4.0-alpha03'
+    implementation "androidx.navigation:navigation-compose:$nav_version"
 
-    // Input
-    implementation 'androidx.lifecycle:lifecycle-viewmodel-compose:2.5.1'
+    // Observe Live data as State
+    implementation "androidx.compose.runtime:runtime-livedata:$compose_ui_version"
 
-    // Swipe Refresh
-    implementation 'com.google.accompanist:accompanist-swiperefresh:0.24.13-rc'
+    // Material 3 Design
+    implementation "androidx.compose.material3:material3:${material3_version}"
+    implementation "androidx.compose.material:material-icons-extended:$compose_ui_version"
 
-    // Load images from the web.
-    implementation "io.coil-kt:coil-compose:2.2.2"
+    // Adaptive Layout / Two Pane
+    implementation "androidx.compose.material3:material3-window-size-class:${material3_version}"
+    implementation "com.google.accompanist:accompanist-adaptive:0.32.0"
 
-    // Bitcoin secp256k1 bindings to Android
-    implementation 'fr.acinq.secp256k1:secp256k1-kmp-jni-android:0.7.0'
 
-    // Nostr Base Protocol
-    implementation('com.github.vitorpamplona.NostrPostr:nostrpostrlib:master-SNAPSHOT') {
-        exclude group:'fr.acinq.secp256k1'
-        exclude module: 'guava'
-        exclude module: 'guava-testlib'
-    }
+    // Lifecycle
+    implementation "androidx.lifecycle:lifecycle-runtime-compose:$lifecycle_version"
+    implementation "androidx.lifecycle:lifecycle-viewmodel-compose:$lifecycle_version"
+    implementation "androidx.lifecycle:lifecycle-runtime-ktx:$lifecycle_version"
+    implementation "androidx.lifecycle:lifecycle-livedata-ktx:$lifecycle_version"
+
+    // Zoomable images
+    implementation 'net.engawapg.lib:zoomable:1.5.1'
+
+    // Biometrics
+    implementation "androidx.biometric:biometric-ktx:1.2.0-alpha05"
 
-    implementation 'com.squareup.retrofit2:converter-gson:2.8.1'
     // Websockets API
-    implementation 'com.squareup.okhttp3:okhttp:4.10.0'
+    implementation 'com.squareup.okhttp3:okhttp:5.0.0-alpha.11'
 
-    // Json Serialization
-    implementation 'com.fasterxml.jackson.module:jackson-module-kotlin:2.14.1'
+    // HTML Parsing for Link Preview
+    implementation 'org.jsoup:jsoup:1.16.2'
 
-    // Rendering clickable text
-    implementation "com.google.accompanist:accompanist-flowlayout:0.28.0"
-
-    // link preview
-    implementation 'tw.com.oneup.www:Baha-UrlPreview:1.0.1'
-    implementation 'androidx.security:security-crypto-ktx:1.1.0-alpha04'
-
-    // upload pictures:
-    implementation "com.google.accompanist:accompanist-permissions:0.28.0"
+    // Encrypted Key Storage
+    implementation 'androidx.security:security-crypto-ktx:1.1.0-alpha06'
 
     // view videos
-    implementation 'com.google.android.exoplayer:exoplayer:2.18.2'
+    implementation "androidx.media3:media3-exoplayer:$media3_version"
+    implementation "androidx.media3:media3-exoplayer-hls:$media3_version"
+    implementation "androidx.media3:media3-ui:$media3_version"
+    implementation "androidx.media3:media3-session:$media3_version"
+
+    // important for proxy / tor
+    implementation "androidx.media3:media3-datasource-okhttp:$media3_version"
+
+    // Load images from the web.
+    implementation "io.coil-kt:coil-compose:$coil_version"
+    // view gifs
+    implementation "io.coil-kt:coil-gif:$coil_version"
+    // view svgs
+    implementation "io.coil-kt:coil-svg:$coil_version"
+
+    // create blurhash
+    implementation group: 'io.trbl', name: 'blurhash', version: '1.0.0'
+
+    // Permission to upload pictures:
+    implementation "com.google.accompanist:accompanist-permissions:$accompanist_version"
+
+    // For QR generation
+    implementation 'com.google.zxing:core:3.5.2'
+    implementation 'com.journeyapps:zxing-android-embedded:4.3.0'
+
+    // Markdown
+    //implementation "com.halilibo.compose-richtext:richtext-ui:0.16.0"
+    //implementation "com.halilibo.compose-richtext:richtext-ui-material:0.16.0"
+    //implementation "com.halilibo.compose-richtext:richtext-commonmark:0.16.0"
+
+    // Markdown (With fix for full-image bleeds)
+    implementation('com.github.vitorpamplona.compose-richtext:richtext-ui:a0954aba63')
+    implementation('com.github.vitorpamplona.compose-richtext:richtext-ui-material3:a0954aba63')
+    implementation('com.github.vitorpamplona.compose-richtext:richtext-commonmark:a0954aba63')
+
+    // Language picker and Theme chooser
+    implementation 'androidx.appcompat:appcompat:1.6.1'
+
+    // Local model for language identification
+    playImplementation 'com.google.mlkit:language-id:17.0.4'
+
+    // Google services model the translate text
+    playImplementation 'com.google.mlkit:translate:17.0.2'
+
+    // PushNotifications
+    playImplementation platform('com.google.firebase:firebase-bom:32.6.0')
+    playImplementation 'com.google.firebase:firebase-messaging-ktx'
+
+    //PushNotifications(FDroid)
+    fdroidImplementation 'com.github.UnifiedPush:android-connector:2.2.0'
+
+    // Charts
+    implementation "com.patrykandpatrick.vico:core:${vico_version}"
+    implementation "com.patrykandpatrick.vico:compose:${vico_version}"
+    implementation "com.patrykandpatrick.vico:views:${vico_version}"
+    implementation "com.patrykandpatrick.vico:compose-m2:${vico_version}"
+
+    // GeoHash
+    implementation 'com.github.drfonfon:android-kotlin-geohash:1.0'
+
+    // Waveform visualizer
+    implementation 'com.github.lincollincol:compose-audiowaveform:1.1.1'
+
+    // Video compression lib
+    implementation 'com.github.AbedElazizShe:LightCompressor:1.3.1'
+    // Image compression lib
+    implementation 'id.zelory:compressor:3.0.1'
 
     testImplementation 'junit:junit:4.13.2'
-    androidTestImplementation 'androidx.test.ext:junit:1.1.5'
+    testImplementation 'io.mockk:mockk:1.13.8'
+    androidTestImplementation 'androidx.test.ext:junit:1.2.0-alpha01'
+    androidTestImplementation "androidx.test.ext:junit-ktx:1.2.0-alpha01"
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
     androidTestImplementation "androidx.compose.ui:ui-test-junit4:$compose_ui_version"
     debugImplementation "androidx.compose.ui:ui-tooling:$compose_ui_version"
     debugImplementation "androidx.compose.ui:ui-test-manifest:$compose_ui_version"
-}
+}
+
+// https://gitlab.com/fdroid/wiki/-/wikis/HOWTO:-diff-&-fix-APKs-for-Reproducible-Builds#differing-assetsdexoptbaselineprofm-easy-to-fix
+// NB: Android Studio can't find the imports; this does not affect the
+// actual build since Gradle can find them just fine.
+import com.android.tools.profgen.ArtProfileKt
+import com.android.tools.profgen.ArtProfileSerializer
+import com.android.tools.profgen.DexFile
+
+project.afterEvaluate {
+    tasks.each { task ->
+        if (task.name.startsWith("compile") && task.name.endsWith("ReleaseArtProfile")) {
+            task.doLast {
+                outputs.files.each { file ->
+                    if (file.name.endsWith(".profm")) {
+                        println("Sorting ${file} ...")
+                        def version = ArtProfileSerializer.valueOf("METADATA_0_0_2")
+                        def profile = ArtProfileKt.ArtProfile(file)
+                        def keys = new ArrayList(profile.profileData.keySet())
+                        def sortedData = new LinkedHashMap()
+                        Collections.sort keys, new DexFile.Companion()
+                        keys.each { key -> sortedData[key] = profile.profileData[key] }
+                        new FileOutputStream(file).with {
+                            write(version.magicBytes$profgen)
+                            write(version.versionBytes$profgen)
+                            version.write$profgen(it, sortedData, "")
+                        }
+                    }
+                }
+            }
+        }
+    }
+}

app/google-services.json

@@ -0,0 +1,68 @@
+{
+  "project_info": {
+    "project_number": "768341258853",
+    "project_id": "amethyst-3057a",
+    "storage_bucket": "amethyst-3057a.appspot.com"
+  },
+  "client": [
+    {
+      "client_info": {
+        "mobilesdk_app_id": "1:768341258853:android:5d07c35a37b24ff36b8c8c",
+        "android_client_info": {
+          "package_name": "com.vitorpamplona.amethyst"
+        }
+      },
+      "oauth_client": [
+        {
+          "client_id": "768341258853-6um8ig59qstvio60gfo60fe5e45lnqqe.apps.googleusercontent.com",
+          "client_type": 3
+        }
+      ],
+      "api_key": [
+        {
+          "current_key": "AIzaSyB7ZxgdpgrN6R223HCFdfv4ulP8Egp7trE"
+        }
+      ],
+      "services": {
+        "appinvite_service": {
+          "other_platform_oauth_client": [
+            {
+              "client_id": "768341258853-6um8ig59qstvio60gfo60fe5e45lnqqe.apps.googleusercontent.com",
+              "client_type": 3
+            }
+          ]
+        }
+      }
+    },
+    {
+      "client_info": {
+        "mobilesdk_app_id": "1:768341258853:android:e0200680f552484d6b8c8c",
+        "android_client_info": {
+          "package_name": "com.vitorpamplona.amethyst.debug"
+        }
+      },
+      "oauth_client": [
+        {
+          "client_id": "768341258853-6um8ig59qstvio60gfo60fe5e45lnqqe.apps.googleusercontent.com",
+          "client_type": 3
+        }
+      ],
+      "api_key": [
+        {
+          "current_key": "AIzaSyB7ZxgdpgrN6R223HCFdfv4ulP8Egp7trE"
+        }
+      ],
+      "services": {
+        "appinvite_service": {
+          "other_platform_oauth_client": [
+            {
+              "client_id": "768341258853-6um8ig59qstvio60gfo60fe5e45lnqqe.apps.googleusercontent.com",
+              "client_type": 3
+            }
+          ]
+        }
+      }
+    }
+  ],
+  "configuration_version": "1"
+}

app/proguard-rules.pro

@@ -5,17 +5,56 @@
 # For more details, see
 #   http://developer.android.com/guide/developing/tools/proguard.html
 
-# If your project uses WebView with JS, uncomment the following
-# and specify the fully qualified class name to the JavaScript interface
-# class:
-#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
-#   public *;
-#}
+# preserve the line number information for debugging stack traces.
+-dontobfuscate
+-keepattributes LocalVariableTable
+-keepattributes LocalVariableTypeTable
+-keepattributes *Annotation*
+-keepattributes SourceFile
+-keepattributes LineNumberTable
+-keepattributes Signature
+-keepattributes Exceptions
+-keepattributes InnerClasses
+-keepattributes EnclosingMethod
+-keepattributes MethodParameters
+-keepparameternames
 
-# Uncomment this to preserve the line number information for
-# debugging stack traces.
-#-keepattributes SourceFile,LineNumberTable
+-keepdirectories libs
 
-# If you keep the line number information, uncomment this to
-# hide the original source file name.
-#-renamesourcefileattribute SourceFile
+# Keep all names
+-keepnames class ** { *; }
+
+# Keep All enums
+-keep enum ** { *; }
+
+# preserve access to native classses
+-keep class fr.acinq.secp256k1.** { *; }
+
+# JNA For Libsodium
+-keep class com.goterl.lazysodium.** { *; }
+
+# JNA also requires AWT, which Android does not have. So the classes are broken down to filter AWT out
+-keep class com.sun.jna.ToNativeConverter { *; }
+-keep class com.sun.jna.NativeMapped { *; }
+-keep class com.sun.jna.CallbackReference { *; }
+-keep class com.sun.jna.ptr.IntByReference { *; }
+-keep class com.sun.jna.NativeLong { *; }
+-keep class com.sun.jna.Structure { *; }
+-keep class com.sun.jna.Structure$* { *; }
+-keep class com.sun.jna.Native$ffi_callback { *; }
+-keep class * implements com.sun.jna.Structure$* { *; }
+-keep class * implements com.sun.jna.Native$* { *; }
+-keep class com.sun.jna.Native {
+    private static com.sun.jna.NativeMapped fromNative(java.lang.Class, java.lang.Object);
+    private static com.sun.jna.NativeMapped fromNative(java.lang.reflect.Method, java.lang.Object);
+    private static java.lang.Class nativeType(java.lang.Class);
+    private static java.lang.Object toNative(com.sun.jna.ToNativeConverter, java.lang.Object);
+    private static java.lang.Object fromNative(com.sun.jna.FromNativeConverter, java.lang.Object, java.lang.reflect.Method);
+}
+
+# JSON parsing
+-keep class com.vitorpamplona.quartz.crypto.** { *; }
+-keep class com.vitorpamplona.quartz.encoders.** { *; }
+-keep class com.vitorpamplona.quartz.events.** { *; }
+-keep class com.vitorpamplona.amethyst.model.** { *; }
+-keep class com.vitorpamplona.amethyst.service.** { *; }

app/src/androidTest/java/com/vitorpamplona/amethyst/ExampleInstrumentedTest.kt

@@ -1,24 +0,0 @@
-package com.vitorpamplona.amethyst
-
-import androidx.test.platform.app.InstrumentationRegistry
-import androidx.test.ext.junit.runners.AndroidJUnit4
-
-import org.junit.Test
-import org.junit.runner.RunWith
-
-import org.junit.Assert.*
-
-/**
- * Instrumented test, which will execute on an Android device.
- *
- * See [testing documentation](http://d.android.com/tools/testing).
- */
-@RunWith(AndroidJUnit4::class)
-class ExampleInstrumentedTest {
-  @Test
-  fun useAppContext() {
-    // Context of the app under test.
-    val appContext = InstrumentationRegistry.getInstrumentation().targetContext
-    assertEquals("com.vitorpamplona.amethyst", appContext.packageName)
-  }
-}

app/src/androidTest/java/com/vitorpamplona/amethyst/ImageUploadTesting.kt

@@ -0,0 +1,74 @@
+package com.vitorpamplona.amethyst
+
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import com.vitorpamplona.amethyst.model.Account
+import com.vitorpamplona.amethyst.ui.actions.FileServer
+import com.vitorpamplona.amethyst.ui.actions.ImageUploader
+import com.vitorpamplona.amethyst.ui.actions.ImgurServer
+import com.vitorpamplona.amethyst.ui.actions.NostrBuildServer
+import com.vitorpamplona.amethyst.ui.actions.NostrFilesDevServer
+import com.vitorpamplona.amethyst.ui.actions.NostrImgServer
+import com.vitorpamplona.quartz.crypto.KeyPair
+import kotlinx.coroutines.runBlocking
+import org.junit.Assert
+import org.junit.Test
+import org.junit.runner.RunWith
+import java.util.Base64
+import java.util.concurrent.CountDownLatch
+
+@RunWith(AndroidJUnit4::class)
+class ImageUploadTesting {
+
+    val image = "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"
+
+    private fun testBase(server: FileServer) {
+        val bytes = Base64.getDecoder().decode(image)
+        val inputStream = bytes.inputStream()
+
+        val countDownLatch = CountDownLatch(1)
+        var url: String? = null
+        var error: String? = null
+
+        ImageUploader(Account(KeyPair())).uploadImage(
+            inputStream,
+            bytes.size.toLong(),
+            "image/gif",
+            server,
+            onSuccess = { newUrl, contentType ->
+                println("Uploaded $contentType to $url")
+                url = newUrl
+                countDownLatch.countDown()
+            },
+            onError = {
+                println("Failed to Upload")
+                error = it.message
+                countDownLatch.countDown()
+            }
+        )
+
+        countDownLatch.await()
+
+        Assert.assertNull(error)
+        Assert.assertTrue(url?.startsWith("http") == true)
+    }
+
+    @Test()
+    fun testImgurUpload() = runBlocking {
+        testBase(ImgurServer())
+    }
+
+    @Test()
+    fun testNostrBuildUpload() = runBlocking {
+        testBase(NostrBuildServer())
+    }
+
+    @Test()
+    fun testNostrImgUpload() = runBlocking {
+        testBase(NostrImgServer())
+    }
+
+    @Test()
+    fun testNostrFilesDevUpload() = runBlocking {
+        testBase(NostrFilesDevServer())
+    }
+}

app/src/androidTest/java/com/vitorpamplona/amethyst/UrlUserTagTransformationTest.kt

@@ -0,0 +1,105 @@
+package com.vitorpamplona.amethyst
+
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.text.AnnotatedString
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import androidx.test.platform.app.InstrumentationRegistry
+import com.vitorpamplona.amethyst.model.LocalCache
+import com.vitorpamplona.amethyst.ui.actions.buildAnnotatedStringWithUrlHighlighting
+import com.vitorpamplona.quartz.encoders.decodePublicKey
+import com.vitorpamplona.quartz.encoders.toHexKey
+import com.vitorpamplona.quartz.events.UserMetadata
+import org.junit.Assert.assertEquals
+import org.junit.Test
+import org.junit.runner.RunWith
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+@RunWith(AndroidJUnit4::class)
+class UrlUserTagTransformationTest {
+    @Test
+    fun useAppContext() {
+        // Context of the app under test.
+        val appContext = InstrumentationRegistry.getInstrumentation().targetContext
+        assertEquals("com.vitorpamplona.amethyst", appContext.packageName.removeSuffix(".debug"))
+    }
+
+    @Test
+    fun transformationText() {
+        val user = LocalCache.getOrCreateUser(
+            decodePublicKey("npub1gcxzte5zlkncx26j68ez60fzkvtkm9e0vrwdcvsjakxf9mu9qewqlfnj5z")
+                .toHexKey()
+        )
+        user.info = UserMetadata()
+        user.info?.displayName = "Vitor Pamplona"
+
+        val transformedText = buildAnnotatedStringWithUrlHighlighting(
+            AnnotatedString("New Hey @npub1gcxzte5zlkncx26j68ez60fzkvtkm9e0vrwdcvsjakxf9mu9qewqlfnj5z"),
+            Color.Red
+        )
+
+        assertEquals("New Hey @Vitor Pamplona", transformedText.text.text)
+
+        assertEquals(0, transformedText.offsetMapping.originalToTransformed(0)) // Before N
+        assertEquals(4, transformedText.offsetMapping.originalToTransformed(4)) // Before H
+        assertEquals(8, transformedText.offsetMapping.originalToTransformed(8)) // Before @
+        assertEquals(8, transformedText.offsetMapping.originalToTransformed(9)) // Before n
+        assertEquals(8, transformedText.offsetMapping.originalToTransformed(10)) // Before p
+        assertEquals(9, transformedText.offsetMapping.originalToTransformed(11)) // Before u
+        assertEquals(9, transformedText.offsetMapping.originalToTransformed(12)) // Before b
+        assertEquals(9, transformedText.offsetMapping.originalToTransformed(13)) // Before 1
+
+        assertEquals(23, transformedText.offsetMapping.originalToTransformed(71))
+        assertEquals(23, transformedText.offsetMapping.originalToTransformed(72))
+
+        assertEquals(0, transformedText.offsetMapping.transformedToOriginal(0))
+        assertEquals(4, transformedText.offsetMapping.transformedToOriginal(4))
+        assertEquals(8, transformedText.offsetMapping.transformedToOriginal(8))
+        assertEquals(12, transformedText.offsetMapping.transformedToOriginal(9))
+
+        assertEquals(72, transformedText.offsetMapping.transformedToOriginal(23))
+        assertEquals(73, transformedText.offsetMapping.transformedToOriginal(24))
+    }
+
+    @Test
+    fun transformationTextTwoKeys() {
+        val user = LocalCache.getOrCreateUser(
+            decodePublicKey("npub1gcxzte5zlkncx26j68ez60fzkvtkm9e0vrwdcvsjakxf9mu9qewqlfnj5z")
+                .toHexKey()
+        )
+        user.info = UserMetadata()
+        user.info?.displayName = "Vitor Pamplona"
+
+        val transformedText = buildAnnotatedStringWithUrlHighlighting(
+            AnnotatedString("New Hey @npub1gcxzte5zlkncx26j68ez60fzkvtkm9e0vrwdcvsjakxf9mu9qewqlfnj5z and @npub1gcxzte5zlkncx26j68ez60fzkvtkm9e0vrwdcvsjakxf9mu9qewqlfnj5z"),
+            Color.Red
+        )
+
+        assertEquals("New Hey @Vitor Pamplona and @Vitor Pamplona", transformedText.text.text)
+
+        assertEquals(9, transformedText.offsetMapping.originalToTransformed(11))
+        assertEquals(9, transformedText.offsetMapping.originalToTransformed(12))
+        assertEquals(9, transformedText.offsetMapping.originalToTransformed(13))
+
+        assertEquals(23, transformedText.offsetMapping.originalToTransformed(70)) // Before 5
+        assertEquals(23, transformedText.offsetMapping.originalToTransformed(71)) // Before z
+        assertEquals(23, transformedText.offsetMapping.originalToTransformed(72)) // Before <space>
+        assertEquals(24, transformedText.offsetMapping.originalToTransformed(73)) // Before a
+        assertEquals(25, transformedText.offsetMapping.originalToTransformed(74)) // Before n
+        assertEquals(26, transformedText.offsetMapping.originalToTransformed(75)) // Before d
+        assertEquals(27, transformedText.offsetMapping.originalToTransformed(76)) // Before <space>
+        assertEquals(28, transformedText.offsetMapping.originalToTransformed(77)) // Before @
+        assertEquals(28, transformedText.offsetMapping.originalToTransformed(78)) // Before n
+
+        assertEquals(68, transformedText.offsetMapping.transformedToOriginal(22)) // Before a
+        assertEquals(72, transformedText.offsetMapping.transformedToOriginal(23)) // Before <space>
+        assertEquals(73, transformedText.offsetMapping.transformedToOriginal(24)) // Before a
+        assertEquals(74, transformedText.offsetMapping.transformedToOriginal(25)) // Before n
+        assertEquals(75, transformedText.offsetMapping.transformedToOriginal(26)) // Before d
+        assertEquals(76, transformedText.offsetMapping.transformedToOriginal(27)) // Before <space>
+        assertEquals(77, transformedText.offsetMapping.transformedToOriginal(28)) // Before @
+    }
+}

app/src/androidTest/res/values/strings.xml

@@ -0,0 +1,4 @@
+<resources>
+    <string name="app_name_release">Amethyst</string>
+    <string name="app_name_debug">Amethyst Debug</string>
+</resources>

app/src/androidTestPlay/java/com/vitorpamplona/amethyst/TranslationsTest.kt

@@ -0,0 +1,111 @@
+package com.vitorpamplona.amethyst
+
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import com.google.android.gms.tasks.Tasks
+import com.vitorpamplona.amethyst.service.lang.LanguageTranslatorService
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertTrue
+import org.junit.Test
+import org.junit.runner.RunWith
+
+@RunWith(AndroidJUnit4::class)
+class TranslationsTest {
+
+    fun translateTo(text: String, translateTo: String): String? {
+        val task = LanguageTranslatorService.autoTranslate(text, emptySet(), translateTo)
+        return Tasks.await(task).result
+    }
+
+    fun assertTranslate(expected: String, input: String, translateTo: String) {
+        assertEquals(null, expected, translateTo(input, translateTo))
+    }
+
+    fun assertTranslateContains(expected: String, input: String, translateTo: String) {
+        val translated = translateTo(input, translateTo)!!
+        assertTrue("'$translated' does not contain '$expected'", translated.contains(expected))
+    }
+
+    @Test
+    fun testTranslation() {
+        assertTranslate("Olá mundo", "Hello World", "pt")
+    }
+
+    @Test
+    fun testTranslationName() {
+        assertTranslate("Olá Vitor, como você está?", "Hello Vitor, how are you doing?", "pt")
+    }
+
+    @Test
+    fun testTranslationTag() {
+        assertTranslate("Você já viu isso, #[0]", "Have you seen this, #[0]", "pt")
+    }
+
+    @Test
+    fun testTranslationUrl() {
+        assertTranslateContains("https://t.me/mygroup", "Have you seen this https://t.me/mygroup", "pt")
+        assertTranslateContains("http://bananas.com", "Have you seen this http://bananas.com", "pt")
+        assertTranslateContains("http://bananas.com/myimage.jpg", "Have you seen this http://bananas.com/myimage.jpg", "pt")
+        assertTranslateContains("http://bananas.com?search=true&image=myimage.jpg", "Have you seen this http://bananas.com?search=true&image=myimage.jpg", "pt")
+        assertTranslate("https://i.imgur.com/EZ3QPsw.jpg", "https://i.imgur.com/EZ3QPsw.jpg", "pt")
+        assertTranslate("https://HaveYouSeenThis.com", "https://HaveYouSeenThis.com", "pt")
+        assertTranslate("https://haveyouseenthis.com", "https://haveyouseenthis.com", "pt")
+        assertTranslate("https://i.imgur.com/asdEZ3QPsw.jpg", "https://i.imgur.com/asdEZ3QPsw.jpg", "pt")
+        assertTranslateContains("https://i.imgur.com/asdEZ3QPswadfj2389rioasdjf9834riofaj9834aKLL.jpg", "Hi there! \n How are you doing? \n https://i.imgur.com/asdEZ3QPswadfj2389rioasdjf9834riofaj9834aKLL.jpg", "pt")
+    }
+
+    @Test
+    fun testChineseWithUrlDetector() {
+        assertTranslate("I entered your home page is very carton, perhaps your attention or other data is too much, and the homepage of others is not so carton. From aMethyst client", "我进入你的主页很卡顿，也许是你的关注人数或者其他数据太多了，其他人主页没有这么卡顿。来自amethyst客户端", "en")
+    }
+
+    @Test
+    fun testTranslationEmail() {
+        assertTranslateContains("vitor@amethyst.social", "Have you seen this vitor@amethyst.social", "pt")
+    }
+
+    @Test
+    fun testTranslationLnInvoice() {
+        assertTranslateContains(
+            "lnbc12u1p3lvjeupp5a5ecgp45k6pa8tu7rnkgzfuwdy3l5ylv3k5tdzrg4cr8rj2f364sdq5g9kxy7fqd9h8vmmfvdjscqzpgxqyz5vqsp5zuzyetf33aphetf0e80w7tztw6dfsjs4lmvya4cyk8umfsx00qts9qyyssqke9hphcr36zvcav8wr502g0mhfhxpy8m9tt36zttg8vldm2qxw039ulccr8nwy3hjg2sw5vk65e99lwuhrhw0nuya2u57qszltvx7egp74jydn",
+            "Have you seen this: lnbc12u1p3lvjeupp5a5ecgp45k6pa8tu7rnkgzfuwdy3l5ylv3k5tdzrg4cr8rj2f364sdq5g9kxy7fqd9h8vmmfvdjscqzpgxqyz5vqsp5zuzyetf33aphetf0e80w7tztw6dfsjs4lmvya4cyk8umfsx00qts9qyyssqke9hphcr36zvcav8wr502g0mhfhxpy8m9tt36zttg8vldm2qxw039ulccr8nwy3hjg2sw5vk65e99lwuhrhw0nuya2u57qszltvx7egp74jydn I think I have to pay",
+            "pt"
+        )
+
+        assertTranslateContains(
+            "lnbc10u1p3l0wg0pp5y5y3vxt3429m28uuq56uqhwxadftn67yaarq06h3y9nqapz72n6sdqqxqyjw5q9q7sqqqqqqqqqqqqqqqqqqqqqqqqq9qsqsp5y2tazp42xde3c0tdsz30zqcekrt0lzrneszdtagy2qn7vs0d3p5qrzjqwryaup9lh50kkranzgcdnn2fgvx390wgj5jd07rwr3vxeje0glcll7jdvcln4lhw5qqqqlgqqqqqeqqjqdau9jzseecmvmh03h88xyf5f980xx45fmn0cej654v5jr79ye36pww90jwdda38damlmgt54v8rn6q9kywtw057rh4v3wwrmn8fajagqnssr7v",
+            "Test lnbc10u1p3l0wg0pp5y5y3vxt3429m28uuq56uqhwxadftn67yaarq06h3y9nqapz72n6sdqqxqyjw5q9q7sqqqqqqqqqqqqqqqqqqqqqqqqq9qsqsp5y2tazp42xde3c0tdsz30zqcekrt0lzrneszdtagy2qn7vs0d3p5qrzjqwryaup9lh50kkranzgcdnn2fgvx390wgj5jd07rwr3vxeje0glcll7jdvcln4lhw5qqqqlgqqqqqeqqjqdau9jzseecmvmh03h88xyf5f980xx45fmn0cej654v5jr79ye36pww90jwdda38damlmgt54v8rn6q9kywtw057rh4v3wwrmn8fajagqnssr7v",
+            "pt"
+        )
+    }
+
+    @Test
+    fun testNostrEvents() {
+        assertTranslateContains(
+            "nostr:nevent1qqs0tsw8hjacs4fppgdg7f5yhgwwfkyua4xcs3re9wwkpkk2qeu6mhql22rcy",
+            "sure, nostr:nevent1qqs0tsw8hjacs4fppgdg7f5yhgwwfkyua4xcs3re9wwkpkk2qeu6mhql22rcy",
+            "en"
+        )
+    }
+
+    @Test
+    fun testJapaneseTranslationsOfUrl() {
+        assertTranslateContains(
+            "https://youtu.be/wMYFmCDy_Eg",
+            "うちの会社の小さい先輩の話 第1話「うちの会社の先輩は小さくて可愛い」\n" +
+                "\n" +
+                "https://youtu.be/wMYFmCDy_Eg\n" +
+                "\n" +
+                "先輩がうざい後輩の話と似たような話かと思ったけど、もっとオタクの妄想あるある的なものを詰め込んだやつだ。ワードとかシチュエーションとか、ヒロインのサイズ感とか。知らんけど",
+            "en"
+        )
+    }
+
+    @Test
+    fun testEmoji() {
+        assertTranslateContains(
+            "https://cdn.nostr.build/i/df3783dcdf7dd289ba02ba538dc039c8fe1d4db055e580b81604ed88c6af4ee0.jpg",
+            "\uD83E\uDD23 https://cdn.nostr.build/i/df3783dcdf7dd289ba02ba538dc039c8fe1d4db055e580b81604ed88c6af4ee0.jpg ",
+            "pt"
+        )
+    }
+}

app/src/fdroid/AndroidManifest.xml

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <application
+        android:name=".Amethyst">
+
+        <receiver
+            android:exported="true"
+            android:enabled="true"
+            android:name=".service.notifications.PushMessageReceiver">
+            <intent-filter>
+                <action android:name="org.unifiedpush.android.connector.MESSAGE"/>
+                <action android:name="org.unifiedpush.android.connector.UNREGISTERED"/>
+                <action android:name="org.unifiedpush.android.connector.NEW_ENDPOINT"/>
+                <action android:name="org.unifiedpush.android.connector.REGISTRATION_FAILED"/>
+                <action android:name="org.unifiedpush.android.connector.REGISTRATION_REFUSED"/>
+            </intent-filter>
+        </receiver>
+
+    </application>
+
+</manifest>

app/src/fdroid/java/com/vitorpamplona/amethyst/service/lang/LanguageTranslatorService.kt

@@ -0,0 +1,5 @@
+package com.vitorpamplona.amethyst.service.lang
+
+object LanguageTranslatorService {
+    fun clear() {}
+}

app/src/fdroid/java/com/vitorpamplona/amethyst/service/notifications/PushDistributorHandler.kt

@@ -0,0 +1,76 @@
+package com.vitorpamplona.amethyst.service.notifications
+
+import android.content.Context
+import android.content.pm.PackageManager
+import android.os.Build
+import android.util.Log
+import com.vitorpamplona.amethyst.Amethyst
+import org.unifiedpush.android.connector.UnifiedPush
+
+interface PushDistributorActions {
+    fun getSavedDistributor(): String
+    fun getInstalledDistributors(): List<String>
+    fun saveDistributor(distributor: String)
+    fun removeSavedDistributor()
+}
+object PushDistributorHandler : PushDistributorActions {
+    private val appContext = Amethyst.instance.applicationContext
+    private val unifiedPush: UnifiedPush = UnifiedPush
+
+    private var endpointInternal = ""
+    val endpoint = endpointInternal
+
+    fun getSavedEndpoint() = endpoint
+    fun setEndpoint(newEndpoint: String) {
+        endpointInternal = newEndpoint
+        Log.d("PushHandler", "New endpoint saved : $endpointInternal")
+    }
+
+    fun removeEndpoint() {
+        endpointInternal = ""
+    }
+
+    override fun getSavedDistributor(): String {
+        return unifiedPush.getDistributor(appContext)
+    }
+
+    fun savedDistributorExists(): Boolean = getSavedDistributor().isNotEmpty()
+
+    override fun getInstalledDistributors(): List<String> {
+        return unifiedPush.getDistributors(appContext)
+    }
+
+    fun formattedDistributorNames(): List<String> {
+        val distributorsArray = getInstalledDistributors().toTypedArray()
+        val distributorsNameArray = distributorsArray.map {
+            try {
+                val ai = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
+                    appContext.packageManager.getApplicationInfo(
+                        it,
+                        PackageManager.ApplicationInfoFlags.of(
+                            PackageManager.GET_META_DATA.toLong()
+                        )
+                    )
+                } else {
+                    appContext.packageManager.getApplicationInfo(it, 0)
+                }
+                appContext.packageManager.getApplicationLabel(ai)
+            } catch (e: PackageManager.NameNotFoundException) {
+                it
+            } as String
+        }.toTypedArray()
+        return distributorsNameArray.toList()
+    }
+
+    override fun saveDistributor(distributor: String) {
+        unifiedPush.saveDistributor(appContext, distributor)
+        unifiedPush.registerApp(appContext)
+    }
+
+    override fun removeSavedDistributor() {
+        unifiedPush.safeRemoveDistributor(appContext)
+    }
+    fun forceRemoveDistributor(context: Context) {
+        unifiedPush.forceRemoveDistributor(context)
+    }
+}

app/src/fdroid/java/com/vitorpamplona/amethyst/service/notifications/PushMessageReceiver.kt

@@ -0,0 +1,92 @@
+package com.vitorpamplona.amethyst.service.notifications
+
+import android.app.NotificationManager
+import android.content.Context
+import android.content.Intent
+import android.util.Log
+import android.util.LruCache
+import androidx.core.content.ContextCompat
+import com.vitorpamplona.amethyst.Amethyst
+import com.vitorpamplona.amethyst.LocalPreferences
+import com.vitorpamplona.amethyst.service.notifications.NotificationUtils.getOrCreateDMChannel
+import com.vitorpamplona.amethyst.service.notifications.NotificationUtils.getOrCreateZapChannel
+import com.vitorpamplona.quartz.events.Event
+import com.vitorpamplona.quartz.events.GiftWrapEvent
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.SupervisorJob
+import kotlinx.coroutines.cancel
+import kotlinx.coroutines.launch
+import org.unifiedpush.android.connector.MessagingReceiver
+
+class PushMessageReceiver : MessagingReceiver() {
+    private val TAG = "Amethyst-OSSPushReceiver"
+    private val appContext = Amethyst.instance.applicationContext
+    private val scope = CoroutineScope(Dispatchers.IO + SupervisorJob())
+    private val eventCache = LruCache<String, String>(100)
+    private val pushHandler = PushDistributorHandler
+
+    override fun onMessage(context: Context, message: ByteArray, instance: String) {
+        val messageStr = String(message)
+        Log.d(TAG, "New message ${message.decodeToString()} for Instance: $instance")
+        scope.launch {
+            try {
+                parseMessage(messageStr)?.let {
+                    receiveIfNew(it)
+                }
+            } catch (e: Exception) {
+                Log.d(TAG, "Message could not be parsed: ${e.message}")
+            }
+        }
+    }
+
+    private suspend fun parseMessage(message: String): GiftWrapEvent? {
+        (Event.fromJson(message) as? GiftWrapEvent)?.let {
+            return it
+        }
+        return null
+    }
+
+    private suspend fun receiveIfNew(event: GiftWrapEvent) {
+        if (eventCache.get(event.id) == null) {
+            eventCache.put(event.id, event.id)
+            EventNotificationConsumer(appContext).consume(event)
+        }
+    }
+
+    override fun onNewEndpoint(context: Context, endpoint: String, instance: String) {
+        Log.d(TAG, "New endpoint provided:- $endpoint for Instance: $instance")
+        val sanitizedEndpoint = endpoint.dropLast(5)
+        pushHandler.setEndpoint(sanitizedEndpoint)
+        scope.launch(Dispatchers.IO) {
+            RegisterAccounts(LocalPreferences.allSavedAccounts()).go(sanitizedEndpoint)
+            notificationManager().getOrCreateZapChannel(appContext)
+            notificationManager().getOrCreateDMChannel(appContext)
+        }
+    }
+
+    override fun onReceive(context: Context, intent: Intent) {
+        val intentData = intent.dataString
+        val intentAction = intent.action.toString()
+        Log.d(TAG, "Intent Data:- $intentData Intent Action: $intentAction")
+        super.onReceive(context, intent)
+    }
+
+    override fun onRegistrationFailed(context: Context, instance: String) {
+        Log.d(TAG, "Registration failed for Instance: $instance")
+        scope.cancel()
+        pushHandler.forceRemoveDistributor(context)
+    }
+
+    override fun onUnregistered(context: Context, instance: String) {
+        val removedEndpoint = pushHandler.endpoint
+        Log.d(TAG, "Endpoint: $removedEndpoint removed for Instance: $instance")
+        Log.d(TAG, "App is unregistered. ")
+        pushHandler.forceRemoveDistributor(context)
+        pushHandler.removeEndpoint()
+    }
+
+    fun notificationManager(): NotificationManager {
+        return ContextCompat.getSystemService(appContext, NotificationManager::class.java) as NotificationManager
+    }
+}

app/src/fdroid/java/com/vitorpamplona/amethyst/service/notifications/PushNotificationUtils.kt

@@ -0,0 +1,21 @@
+package com.vitorpamplona.amethyst.service.notifications
+
+import android.util.Log
+import com.vitorpamplona.amethyst.AccountInfo
+
+object PushNotificationUtils {
+    var hasInit: Boolean = false
+    private val pushHandler = PushDistributorHandler
+    suspend fun init(accounts: List<AccountInfo>) {
+        if (hasInit || pushHandler.savedDistributorExists()) {
+            return
+        }
+        try {
+            if (pushHandler.savedDistributorExists()) {
+                RegisterAccounts(accounts).go(pushHandler.getSavedEndpoint())
+            }
+        } catch (e: Exception) {
+            Log.d("Amethyst-OSSPushUtils", "Failed to get endpoint.")
+        }
+    }
+}

app/src/fdroid/java/com/vitorpamplona/amethyst/ui/components/SelectNotificationProvider.kt

@@ -0,0 +1,188 @@
+package com.vitorpamplona.amethyst.ui.components
+
+import android.util.Log
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.PaddingValues
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.width
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.Check
+import androidx.compose.material3.AlertDialog
+import androidx.compose.material3.Button
+import androidx.compose.material3.Icon
+import androidx.compose.material3.Text
+import androidx.compose.material3.TextButton
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.unit.dp
+import com.google.accompanist.permissions.ExperimentalPermissionsApi
+import com.google.accompanist.permissions.isGranted
+import com.halilibo.richtext.markdown.Markdown
+import com.halilibo.richtext.ui.RichTextStyle
+import com.halilibo.richtext.ui.material3.Material3RichText
+import com.halilibo.richtext.ui.resolveDefaults
+import com.vitorpamplona.amethyst.R
+import com.vitorpamplona.amethyst.service.notifications.PushDistributorHandler
+import com.vitorpamplona.amethyst.ui.screen.SharedPreferencesViewModel
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.CheckifItNeedsToRequestNotificationPermission
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.SettingsRow
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.SpinnerSelectionDialog
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.TitleExplainer
+import kotlinx.collections.immutable.ImmutableList
+import kotlinx.collections.immutable.toImmutableList
+
+@OptIn(ExperimentalPermissionsApi::class)
+@Composable
+fun SelectNotificationProvider(sharedPreferencesViewModel: SharedPreferencesViewModel) {
+    val notificationPermissionState = CheckifItNeedsToRequestNotificationPermission(sharedPreferencesViewModel)
+
+    if (notificationPermissionState.status.isGranted) {
+        if (!sharedPreferencesViewModel.sharedPrefs.dontShowPushNotificationSelector) {
+            val context = LocalContext.current
+            var distributorPresent by remember {
+                mutableStateOf(PushDistributorHandler.savedDistributorExists())
+            }
+            if (!distributorPresent) {
+                LoadDistributors() { currentDistributor, list, readableListWithExplainer ->
+                    if (readableListWithExplainer.size > 1) {
+                        SpinnerSelectionDialog(
+                            title = stringResource(id = R.string.select_push_server),
+                            options = readableListWithExplainer,
+                            onSelect = { index ->
+                                if (list[index] == "None") {
+                                    PushDistributorHandler.forceRemoveDistributor(context)
+                                    sharedPreferencesViewModel.dontAskForNotificationPermissions()
+                                    sharedPreferencesViewModel.dontShowPushNotificationSelector()
+                                } else {
+                                    val fullDistributorName = list[index]
+                                    PushDistributorHandler.saveDistributor(fullDistributorName)
+                                }
+                                distributorPresent = true
+                                Log.d("Amethyst", "NotificationScreen: Distributor registered.")
+                            },
+                            onDismiss = {
+                                distributorPresent = true
+                                Log.d("Amethyst", "NotificationScreen: Distributor dialog dismissed.")
+                            }
+                        )
+                    } else {
+                        AlertDialog(
+                            onDismissRequest = {
+                                distributorPresent = true
+                            },
+                            title = {
+                                Text(stringResource(R.string.push_server_install_app))
+                            },
+                            text = {
+                                Material3RichText(
+                                    style = RichTextStyle().resolveDefaults()
+                                ) {
+                                    Markdown(
+                                        content = stringResource(R.string.push_server_install_app_description)
+                                    )
+                                }
+                            },
+                            confirmButton = {
+                                Row(
+                                    modifier = Modifier
+                                        .padding(all = 8.dp)
+                                        .fillMaxWidth(),
+                                    horizontalArrangement = Arrangement.SpaceBetween
+                                ) {
+                                    TextButton(onClick = {
+                                        distributorPresent = true
+                                        sharedPreferencesViewModel.dontShowPushNotificationSelector()
+                                    }) {
+                                        Text(stringResource(R.string.quick_action_dont_show_again_button))
+                                    }
+                                    Button(onClick = {
+                                        distributorPresent = true
+                                    }, contentPadding = PaddingValues(horizontal = 16.dp)) {
+                                        Row(
+                                            verticalAlignment = Alignment.CenterVertically
+                                        ) {
+                                            Icon(
+                                                imageVector = Icons.Default.Check,
+                                                contentDescription = null
+                                            )
+                                            Spacer(Modifier.width(8.dp))
+                                            Text(stringResource(R.string.error_dialog_button_ok))
+                                        }
+                                    }
+                                }
+                            }
+                        )
+                    }
+                }
+            } else {
+                val currentDistributor = PushDistributorHandler.getSavedDistributor()
+                PushDistributorHandler.saveDistributor(currentDistributor)
+            }
+        }
+    }
+}
+
+@Composable
+fun LoadDistributors(
+    onInner: @Composable (String, ImmutableList<String>, ImmutableList<TitleExplainer>) -> Unit
+) {
+    val currentDistributor = PushDistributorHandler.getSavedDistributor().ifBlank { null } ?: "None"
+
+    val list = remember {
+        PushDistributorHandler.getInstalledDistributors().plus("None").toImmutableList()
+    }
+
+    val readableListWithExplainer =
+        PushDistributorHandler.formattedDistributorNames()
+            .mapIndexed { index, name ->
+                TitleExplainer(
+                    name,
+                    stringResource(id = R.string.push_server_uses_app_explainer, list[index])
+                )
+            }
+            .plus(
+                TitleExplainer(
+                    stringResource(id = R.string.push_server_none),
+                    stringResource(id = R.string.push_server_none_explainer)
+                )
+            )
+            .toImmutableList()
+
+    onInner(
+        currentDistributor,
+        list,
+        readableListWithExplainer
+    )
+}
+
+@Composable
+fun PushNotificationSettingsRow(sharedPreferencesViewModel: SharedPreferencesViewModel) {
+    val context = LocalContext.current
+
+    LoadDistributors() { currentDistributor, list, readableListWithExplainer ->
+        SettingsRow(
+            R.string.push_server_title,
+            R.string.push_server_explainer,
+            selectedItens = readableListWithExplainer,
+            selectedIndex = list.indexOf(currentDistributor)
+        ) { index ->
+            if (list[index] == "None") {
+                sharedPreferencesViewModel.dontAskForNotificationPermissions()
+                sharedPreferencesViewModel.dontShowPushNotificationSelector()
+                PushDistributorHandler.forceRemoveDistributor(context)
+            } else {
+                PushDistributorHandler.saveDistributor(list[index])
+            }
+        }
+    }
+}

app/src/fdroid/java/com/vitorpamplona/amethyst/ui/components/TranslatableRichTextViewer.kt

@@ -0,0 +1,27 @@
+package com.vitorpamplona.amethyst.ui.components
+
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.MutableState
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
+import com.vitorpamplona.quartz.events.ImmutableListOfLists
+
+@Composable
+fun TranslatableRichTextViewer(
+    content: String,
+    canPreview: Boolean,
+    modifier: Modifier = Modifier,
+    tags: ImmutableListOfLists<String>,
+    backgroundColor: MutableState<Color>,
+    accountViewModel: AccountViewModel,
+    nav: (String) -> Unit
+) = ExpandableRichTextViewer(
+    content,
+    canPreview,
+    modifier,
+    tags,
+    backgroundColor,
+    accountViewModel,
+    nav
+)

app/src/main/AndroidManifest.xml

@@ -1,36 +1,123 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools">
+    <queries>
+        <package android:name="org.torproject.android"/>
+        <package android:name="com.greenart7c3.nostrsigner"/>
+        <package android:name="com.greenart7c3.nostrsigner.debug"/>
+    </queries>
 
+    <!-- Doesn't require a camera -->
+    <uses-feature android:name="android.hardware.camera" android:required="false" />
+
+    <!-- To connect with relays -->
     <uses-permission android:name="android.permission.INTERNET"/>
+
+    <!-- To Upload media (newer devices) -->
     <uses-permission android:name="android.permission.READ_MEDIA_IMAGES"/>
+    <uses-permission android:name="android.permission.READ_MEDIA_VIDEO"/>
+
+    <!-- To Upload media (old devices) -->
+    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
+
+    <!-- To read QRs that contain nostr:<NIP19> -->
+    <uses-permission android:name="android.permission.CAMERA" />
+
+    <!-- To read NFCs that contain nostr:<NIP19> -->
+    <uses-permission android:name="android.permission.NFC" />
+
+    <!-- To know receive notifications when the app connects/disconnects from the web -->
+    <uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" />
+
+    <!-- Audio/Video Playback -->
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE_MEDIA_PLAYBACK" />
+
+    <!-- Keeps screen on while playing videos -->
+    <uses-permission android:name="android.permission.WAKE_LOCK" />
+
+    <!-- This notification permission is needed for some phones -->
+    <uses-permission android:name="android.permission.POST_NOTIFICATIONS"/>
+
+    <!-- Adds Geohash to posts if active -->
+    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
+
+    <!-- Old permission to access media -->
+    <uses-permission
+        android:name="android.permission.WRITE_EXTERNAL_STORAGE"
+        android:maxSdkVersion="28"
+        tools:ignore="ScopedStorage" />
 
     <application
-        android:allowBackup="true"
+        android:allowBackup="false"
+        android:name=".Amethyst"
         android:dataExtractionRules="@xml/data_extraction_rules"
         android:fullBackupContent="@xml/backup_rules"
-        android:icon="@drawable/amethyst_logo"
+        android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
-        android:roundIcon="@drawable/amethyst_logo"
         android:enableOnBackInvokedCallback="true"
         android:supportsRtl="true"
         android:theme="@style/Theme.Amethyst"
-        tools:targetApi="31">
+        android:largeHeap="true"
+        android:usesCleartextTraffic="true"
+        android:hardwareAccelerated="true"
+        android:localeConfig="@xml/locales_config"
+        tools:targetApi="34">
         <activity
             android:name=".ui.MainActivity"
             android:exported="true"
-            android:label="@string/app_name"
+            android:launchMode="singleTop"
+            android:windowSoftInputMode="adjustResize"
+            android:configChanges="orientation|screenSize|screenLayout"
             android:theme="@style/Theme.Amethyst">
-            <intent-filter>
-                <action android:name="android.intent.action.MAIN" />
 
+            <intent-filter android:label="Amethyst">
+                <action android:name="android.intent.action.MAIN" />
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
 
+            <intent-filter android:label="Amethyst">
+                <action android:name="android.intent.action.VIEW" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.BROWSABLE" />
+                <data android:scheme="nostr" />
+            </intent-filter>
+
+            <intent-filter android:label="Amethyst">
+                <action android:name="android.nfc.action.NDEF_DISCOVERED"/>
+                <category android:name="android.intent.category.DEFAULT" />
+                <data android:scheme="nostr" />
+            </intent-filter>
+
+            <intent-filter android:label="Amethyst">
+                <action android:name="android.intent.action.VIEW" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.BROWSABLE" />
+                <data android:scheme="nostrwalletconnect" />
+                <data android:scheme="nostr+walletconnect" />
+            </intent-filter>
+
             <meta-data
                 android:name="android.app.lib_name"
                 android:value="" />
         </activity>
+
+        <activity
+            android:name="com.journeyapps.barcodescanner.CaptureActivity"
+            android:screenOrientation="fullSensor"
+            tools:replace="screenOrientation" />
+
+        <service
+            android:name=".service.playback.PlaybackService"
+            android:foregroundServiceType="mediaPlayback"
+            android:stopWithTask="true"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="androidx.media3.session.MediaSessionService"/>
+                <action android:name="android.media.browse.MediaBrowserService"/>
+            </intent-filter>
+        </service>
+
     </application>
 
 </manifest>

app/src/main/java/androidx/compose/material3/pullrefresh/PullRefresh.kt

@@ -0,0 +1,120 @@
+/*
+ * Copyright 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package androidx.compose.material3.pullrefresh
+
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.geometry.Offset
+import androidx.compose.ui.input.nestedscroll.NestedScrollConnection
+import androidx.compose.ui.input.nestedscroll.NestedScrollSource
+import androidx.compose.ui.input.nestedscroll.NestedScrollSource.Companion.Drag
+import androidx.compose.ui.input.nestedscroll.nestedScroll
+import androidx.compose.ui.platform.debugInspectorInfo
+import androidx.compose.ui.platform.inspectable
+import androidx.compose.ui.unit.Velocity
+
+/**
+ * A nested scroll modifier that provides scroll events to [state].
+ *
+ * Note that this modifier must be added above a scrolling container, such as a lazy column, in
+ * order to receive scroll events. For example:
+ *
+ * @sample androidx.compose.material.samples.PullRefreshSample
+ *
+ * @param state The [PullRefreshState] associated with this pull-to-refresh component.
+ * The state will be updated by this modifier.
+ * @param enabled If not enabled, all scroll delta and fling velocity will be ignored.
+ */
+// TODO(b/244423199): Move pullRefresh into its own material library similar to material-ripple.
+fun Modifier.pullRefresh(
+    state: PullRefreshState,
+    enabled: Boolean = true
+) = inspectable(
+    inspectorInfo = debugInspectorInfo {
+        name = "pullRefresh"
+        properties["state"] = state
+        properties["enabled"] = enabled
+    }
+) {
+    Modifier.pullRefresh(state::onPull, state::onRelease, enabled)
+}
+
+/**
+ * A nested scroll modifier that provides [onPull] and [onRelease] callbacks to aid building custom
+ * pull refresh components.
+ *
+ * Note that this modifier must be added above a scrolling container, such as a lazy column, in
+ * order to receive scroll events. For example:
+ *
+ * @sample androidx.compose.material.samples.CustomPullRefreshSample
+ *
+ * @param onPull Callback for dispatching vertical scroll delta, takes float pullDelta as argument.
+ * Positive delta (pulling down) is dispatched only if the child does not consume it (i.e. pulling
+ * down despite being at the top of a scrollable component), whereas negative delta (swiping up) is
+ * dispatched first (in case it is needed to push the indicator back up), and then the unconsumed
+ * delta is passed on to the child. The callback returns how much delta was consumed.
+ * @param onRelease Callback for when drag is released, takes float flingVelocity as argument.
+ * The callback returns how much velocity was consumed - in most cases this should only consume
+ * velocity if pull refresh has been dragged already and the velocity is positive (the fling is
+ * downwards), as an upwards fling should typically still scroll a scrollable component beneath the
+ * pullRefresh. This is invoked before any remaining velocity is passed to the child.
+ * @param enabled If not enabled, all scroll delta and fling velocity will be ignored and neither
+ * [onPull] nor [onRelease] will be invoked.
+ */
+fun Modifier.pullRefresh(
+    onPull: (pullDelta: Float) -> Float,
+    onRelease: suspend (flingVelocity: Float) -> Float,
+    enabled: Boolean = true
+) = inspectable(
+    inspectorInfo = debugInspectorInfo {
+        name = "pullRefresh"
+        properties["onPull"] = onPull
+        properties["onRelease"] = onRelease
+        properties["enabled"] = enabled
+    }
+) {
+    Modifier.nestedScroll(PullRefreshNestedScrollConnection(onPull, onRelease, enabled))
+}
+
+private class PullRefreshNestedScrollConnection(
+    private val onPull: (pullDelta: Float) -> Float,
+    private val onRelease: suspend (flingVelocity: Float) -> Float,
+    private val enabled: Boolean
+) : NestedScrollConnection {
+
+    override fun onPreScroll(
+        available: Offset,
+        source: NestedScrollSource
+    ): Offset = when {
+        !enabled -> Offset.Zero
+        source == Drag && available.y < 0 -> Offset(0f, onPull(available.y)) // Swiping up
+        else -> Offset.Zero
+    }
+
+    override fun onPostScroll(
+        consumed: Offset,
+        available: Offset,
+        source: NestedScrollSource
+    ): Offset = when {
+        !enabled -> Offset.Zero
+        source == Drag && available.y > 0 -> Offset(0f, onPull(available.y)) // Pulling down
+        else -> Offset.Zero
+    }
+
+    override suspend fun onPreFling(available: Velocity): Velocity {
+        return Velocity(0f, onRelease(available.y))
+    }
+}

app/src/main/java/androidx/compose/material3/pullrefresh/PullRefreshIndicator.kt

@@ -0,0 +1,238 @@
+/*
+ * Copyright 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package androidx.compose.material3.pullrefresh
+
+import androidx.compose.animation.Crossfade
+import androidx.compose.animation.core.LinearEasing
+import androidx.compose.animation.core.animateFloatAsState
+import androidx.compose.animation.core.tween
+import androidx.compose.foundation.Canvas
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.shape.CircleShape
+import androidx.compose.material3.CircularProgressIndicator
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Surface
+import androidx.compose.material3.contentColorFor
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.Immutable
+import androidx.compose.runtime.derivedStateOf
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.remember
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.geometry.Offset
+import androidx.compose.ui.geometry.Rect
+import androidx.compose.ui.geometry.center
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.Path
+import androidx.compose.ui.graphics.PathFillType
+import androidx.compose.ui.graphics.StrokeCap
+import androidx.compose.ui.graphics.drawscope.DrawScope
+import androidx.compose.ui.graphics.drawscope.Stroke
+import androidx.compose.ui.graphics.drawscope.rotate
+import androidx.compose.ui.semantics.semantics
+import androidx.compose.ui.unit.dp
+import kotlin.math.abs
+import kotlin.math.max
+import kotlin.math.min
+import kotlin.math.pow
+
+/**
+ * The default indicator for Compose pull-to-refresh, based on Android's SwipeRefreshLayout.
+ *
+ * @sample androidx.compose.material.samples.PullRefreshSample
+ *
+ * @param refreshing A boolean representing whether a refresh is occurring.
+ * @param state The [PullRefreshState] which controls where and how the indicator will be drawn.
+ * @param modifier Modifiers for the indicator.
+ * @param backgroundColor The color of the indicator's background.
+ * @param contentColor The color of the indicator's arc and arrow.
+ * @param scale A boolean controlling whether the indicator's size scales with pull progress or not.
+ */
+// TODO(b/244423199): Consider whether the state parameter should be replaced with lambdas to
+//  enable people to use this indicator with custom pull-to-refresh components.
+@Composable
+fun PullRefreshIndicator(
+    refreshing: Boolean,
+    state: PullRefreshState,
+    modifier: Modifier = Modifier,
+    backgroundColor: Color = MaterialTheme.colorScheme.surface,
+    contentColor: Color = contentColorFor(backgroundColor),
+    scale: Boolean = false
+) {
+    val showElevation by remember(refreshing, state) {
+        derivedStateOf { refreshing || state.position > 0.5f }
+    }
+
+    Surface(
+        modifier = modifier
+            .size(IndicatorSize)
+            .pullRefreshIndicatorTransform(state, scale),
+        shape = SpinnerShape,
+        color = backgroundColor,
+        shadowElevation = if (showElevation) Elevation else 0.dp
+    ) {
+        Crossfade(
+            targetState = refreshing,
+            animationSpec = tween(durationMillis = CrossfadeDurationMs)
+        ) { refreshing ->
+            Box(
+                modifier = Modifier.fillMaxSize(),
+                contentAlignment = Alignment.Center
+            ) {
+                val spinnerSize = (ArcRadius + StrokeWidth).times(2)
+
+                if (refreshing) {
+                    CircularProgressIndicator(
+                        color = contentColor,
+                        strokeWidth = StrokeWidth,
+                        modifier = Modifier.size(spinnerSize)
+                    )
+                } else {
+                    CircularArrowIndicator(state, contentColor, Modifier.size(spinnerSize))
+                }
+            }
+        }
+    }
+}
+
+/**
+ * Modifier.size MUST be specified.
+ */
+@Composable
+private fun CircularArrowIndicator(
+    state: PullRefreshState,
+    color: Color,
+    modifier: Modifier
+) {
+    val path = remember { Path().apply { fillType = PathFillType.EvenOdd } }
+
+    val targetAlpha by remember(state) {
+        derivedStateOf {
+            if (state.progress >= 1f) MaxAlpha else MinAlpha
+        }
+    }
+
+    val alphaState = animateFloatAsState(targetValue = targetAlpha, animationSpec = AlphaTween)
+
+    // Empty semantics for tests
+    Canvas(modifier.semantics {}) {
+        val values = ArrowValues(state.progress)
+        val alpha = alphaState.value
+
+        rotate(degrees = values.rotation) {
+            val arcRadius = ArcRadius.toPx() + StrokeWidth.toPx() / 2f
+            val arcBounds = Rect(
+                size.center.x - arcRadius,
+                size.center.y - arcRadius,
+                size.center.x + arcRadius,
+                size.center.y + arcRadius
+            )
+            drawArc(
+                color = color,
+                alpha = alpha,
+                startAngle = values.startAngle,
+                sweepAngle = values.endAngle - values.startAngle,
+                useCenter = false,
+                topLeft = arcBounds.topLeft,
+                size = arcBounds.size,
+                style = Stroke(
+                    width = StrokeWidth.toPx(),
+                    cap = StrokeCap.Square
+                )
+            )
+            drawArrow(path, arcBounds, color, alpha, values)
+        }
+    }
+}
+
+@Immutable
+private class ArrowValues(
+    val rotation: Float,
+    val startAngle: Float,
+    val endAngle: Float,
+    val scale: Float
+)
+
+private fun ArrowValues(progress: Float): ArrowValues {
+    // Discard first 40% of progress. Scale remaining progress to full range between 0 and 100%.
+    val adjustedPercent = max(min(1f, progress) - 0.4f, 0f) * 5 / 3
+    // How far beyond the threshold pull has gone, as a percentage of the threshold.
+    val overshootPercent = abs(progress) - 1.0f
+    // Limit the overshoot to 200%. Linear between 0 and 200.
+    val linearTension = overshootPercent.coerceIn(0f, 2f)
+    // Non-linear tension. Increases with linearTension, but at a decreasing rate.
+    val tensionPercent = linearTension - linearTension.pow(2) / 4
+
+    // Calculations based on SwipeRefreshLayout specification.
+    val endTrim = adjustedPercent * MaxProgressArc
+    val rotation = (-0.25f + 0.4f * adjustedPercent + tensionPercent) * 0.5f
+    val startAngle = rotation * 360
+    val endAngle = (rotation + endTrim) * 360
+    val scale = min(1f, adjustedPercent)
+
+    return ArrowValues(rotation, startAngle, endAngle, scale)
+}
+
+private fun DrawScope.drawArrow(
+    arrow: Path,
+    bounds: Rect,
+    color: Color,
+    alpha: Float,
+    values: ArrowValues
+) {
+    arrow.reset()
+    arrow.moveTo(0f, 0f) // Move to left corner
+    arrow.lineTo(x = ArrowWidth.toPx() * values.scale, y = 0f) // Line to right corner
+
+    // Line to tip of arrow
+    arrow.lineTo(
+        x = ArrowWidth.toPx() * values.scale / 2,
+        y = ArrowHeight.toPx() * values.scale
+    )
+
+    val radius = min(bounds.width, bounds.height) / 2f
+    val inset = ArrowWidth.toPx() * values.scale / 2f
+    arrow.translate(
+        Offset(
+            x = radius + bounds.center.x - inset,
+            y = bounds.center.y + StrokeWidth.toPx() / 2f
+        )
+    )
+    arrow.close()
+    rotate(degrees = values.endAngle) {
+        drawPath(path = arrow, color = color, alpha = alpha)
+    }
+}
+
+private const val CrossfadeDurationMs = 100
+private const val MaxProgressArc = 0.8f
+
+private val IndicatorSize = 40.dp
+private val SpinnerShape = CircleShape
+private val ArcRadius = 7.5.dp
+private val StrokeWidth = 2.5.dp
+private val ArrowWidth = 10.dp
+private val ArrowHeight = 5.dp
+private val Elevation = 6.dp
+
+// Values taken from SwipeRefreshLayout
+private const val MinAlpha = 0.3f
+private const val MaxAlpha = 1f
+private val AlphaTween = tween<Float>(300, easing = LinearEasing)

app/src/main/java/androidx/compose/material3/pullrefresh/PullRefreshIndicatorTransform.kt

@@ -0,0 +1,75 @@
+/*
+ * Copyright 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package androidx.compose.material3.pullrefresh
+
+import androidx.compose.animation.core.LinearOutSlowInEasing
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.drawWithContent
+import androidx.compose.ui.graphics.drawscope.clipRect
+import androidx.compose.ui.graphics.graphicsLayer
+import androidx.compose.ui.platform.debugInspectorInfo
+import androidx.compose.ui.platform.inspectable
+
+/**
+ * A modifier for translating the position and scaling the size of a pull-to-refresh indicator
+ * based on the given [PullRefreshState].
+ *
+ * @sample androidx.compose.material.samples.PullRefreshIndicatorTransformSample
+ *
+ * @param state The [PullRefreshState] which determines the position of the indicator.
+ * @param scale A boolean controlling whether the indicator's size scales with pull progress or not.
+ */
+// TODO: Consider whether the state parameter should be replaced with lambdas.
+fun Modifier.pullRefreshIndicatorTransform(
+    state: PullRefreshState,
+    scale: Boolean = false
+) = inspectable(
+    inspectorInfo = debugInspectorInfo {
+        name = "pullRefreshIndicatorTransform"
+        properties["state"] = state
+        properties["scale"] = scale
+    }
+) {
+    Modifier
+        // Essentially we only want to clip the at the top, so the indicator will not appear when
+        // the position is 0. It is preferable to clip the indicator as opposed to the layout that
+        // contains the indicator, as this would also end up clipping shadows drawn by items in a
+        // list for example - so we leave the clipping to the scrolling container. We use MAX_VALUE
+        // for the other dimensions to allow for more room for elevation / arbitrary indicators - we
+        // only ever really want to clip at the top edge.
+        .drawWithContent {
+            clipRect(
+                top = 0f,
+                left = -Float.MAX_VALUE,
+                right = Float.MAX_VALUE,
+                bottom = Float.MAX_VALUE
+            ) {
+                this@drawWithContent.drawContent()
+            }
+        }
+        .graphicsLayer {
+            translationY = state.position - size.height
+
+            if (scale && !state.refreshing) {
+                val scaleFraction = LinearOutSlowInEasing
+                    .transform(state.position / state.threshold)
+                    .coerceIn(0f, 1f)
+                scaleX = scaleFraction
+                scaleY = scaleFraction
+            }
+        }
+}

app/src/main/java/androidx/compose/material3/pullrefresh/PullRefreshState.kt

@@ -0,0 +1,228 @@
+/*
+ * Copyright 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package androidx.compose.material3.pullrefresh
+
+import androidx.compose.animation.core.animate
+import androidx.compose.foundation.MutatorMutex
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.SideEffect
+import androidx.compose.runtime.State
+import androidx.compose.runtime.derivedStateOf
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.runtime.rememberUpdatedState
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.platform.LocalDensity
+import androidx.compose.ui.unit.Dp
+import androidx.compose.ui.unit.dp
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.launch
+import kotlin.math.abs
+import kotlin.math.pow
+
+/**
+ * Creates a [PullRefreshState] that is remembered across compositions.
+ *
+ * Changes to [refreshing] will result in [PullRefreshState] being updated.
+ *
+ * @sample androidx.compose.material.samples.PullRefreshSample
+ *
+ * @param refreshing A boolean representing whether a refresh is currently occurring.
+ * @param onRefresh The function to be called to trigger a refresh.
+ * @param refreshThreshold The threshold below which, if a release
+ * occurs, [onRefresh] will be called.
+ * @param refreshingOffset The offset at which the indicator will be drawn while refreshing. This
+ * offset corresponds to the position of the bottom of the indicator.
+ */
+@Composable
+fun rememberPullRefreshState(
+    refreshing: Boolean,
+    onRefresh: () -> Unit,
+    refreshThreshold: Dp = PullRefreshDefaults.RefreshThreshold,
+    refreshingOffset: Dp = PullRefreshDefaults.RefreshingOffset
+): PullRefreshState {
+    require(refreshThreshold > 0.dp) { "The refresh trigger must be greater than zero!" }
+
+    val scope = rememberCoroutineScope()
+    val onRefreshState = rememberUpdatedState(onRefresh)
+    val thresholdPx: Float
+    val refreshingOffsetPx: Float
+
+    with(LocalDensity.current) {
+        thresholdPx = refreshThreshold.toPx()
+        refreshingOffsetPx = refreshingOffset.toPx()
+    }
+
+    val state = remember(scope) {
+        PullRefreshState(scope, onRefreshState, refreshingOffsetPx, thresholdPx)
+    }
+
+    SideEffect {
+        state.setRefreshing(refreshing)
+        state.setThreshold(thresholdPx)
+        state.setRefreshingOffset(refreshingOffsetPx)
+    }
+
+    return state
+}
+
+/**
+ * A state object that can be used in conjunction with [pullRefresh] to add pull-to-refresh
+ * behaviour to a scroll component. Based on Android's SwipeRefreshLayout.
+ *
+ * Provides [progress], a float representing how far the user has pulled as a percentage of the
+ * refreshThreshold. Values of one or less indicate that the user has not yet pulled past the
+ * threshold. Values greater than one indicate how far past the threshold the user has pulled.
+ *
+ * Can be used in conjunction with [pullRefreshIndicatorTransform] to implement Android-like
+ * pull-to-refresh behaviour with a custom indicator.
+ *
+ * Should be created using [rememberPullRefreshState].
+ */
+class PullRefreshState internal constructor(
+    private val animationScope: CoroutineScope,
+    private val onRefreshState: State<() -> Unit>,
+    refreshingOffset: Float,
+    threshold: Float
+) {
+    /**
+     * A float representing how far the user has pulled as a percentage of the refreshThreshold.
+     *
+     * If the component has not been pulled at all, progress is zero. If the pull has reached
+     * halfway to the threshold, progress is 0.5f. A value greater than 1 indicates that pull has
+     * gone beyond the refreshThreshold - e.g. a value of 2f indicates that the user has pulled to
+     * two times the refreshThreshold.
+     */
+    val progress get() = adjustedDistancePulled / threshold
+
+    internal val refreshing get() = _refreshing
+    internal val position get() = _position
+    internal val threshold get() = _threshold
+
+    private val adjustedDistancePulled by derivedStateOf { distancePulled * DragMultiplier }
+
+    private var _refreshing by mutableStateOf(false)
+    private var _position by mutableStateOf(0f)
+    private var distancePulled by mutableStateOf(0f)
+    private var _threshold by mutableStateOf(threshold)
+    private var _refreshingOffset by mutableStateOf(refreshingOffset)
+
+    internal fun onPull(pullDelta: Float): Float {
+        if (_refreshing) return 0f // Already refreshing, do nothing.
+
+        val newOffset = (distancePulled + pullDelta).coerceAtLeast(0f)
+        val dragConsumed = newOffset - distancePulled
+        distancePulled = newOffset
+        _position = calculateIndicatorPosition()
+        return dragConsumed
+    }
+
+    internal fun onRelease(velocity: Float): Float {
+        if (refreshing) return 0f // Already refreshing, do nothing
+
+        if (adjustedDistancePulled > threshold) {
+            onRefreshState.value()
+        }
+        animateIndicatorTo(0f)
+        val consumed = when {
+            // We are flinging without having dragged the pull refresh (for example a fling inside
+            // a list) - don't consume
+            distancePulled == 0f -> 0f
+            // If the velocity is negative, the fling is upwards, and we don't want to prevent the
+            // the list from scrolling
+            velocity < 0f -> 0f
+            // We are showing the indicator, and the fling is downwards - consume everything
+            else -> velocity
+        }
+        distancePulled = 0f
+        return consumed
+    }
+
+    internal fun setRefreshing(refreshing: Boolean) {
+        if (_refreshing != refreshing) {
+            _refreshing = refreshing
+            distancePulled = 0f
+            animateIndicatorTo(if (refreshing) _refreshingOffset else 0f)
+        }
+    }
+
+    internal fun setThreshold(threshold: Float) {
+        _threshold = threshold
+    }
+
+    internal fun setRefreshingOffset(refreshingOffset: Float) {
+        if (_refreshingOffset != refreshingOffset) {
+            _refreshingOffset = refreshingOffset
+            if (refreshing) animateIndicatorTo(refreshingOffset)
+        }
+    }
+
+    // Make sure to cancel any existing animations when we launch a new one. We use this instead of
+    // Animatable as calling snapTo() on every drag delta has a one frame delay, and some extra
+    // overhead of running through the animation pipeline instead of directly mutating the state.
+    private val mutatorMutex = MutatorMutex()
+
+    private fun animateIndicatorTo(offset: Float) = animationScope.launch {
+        mutatorMutex.mutate {
+            animate(initialValue = _position, targetValue = offset) { value, _ ->
+                _position = value
+            }
+        }
+    }
+
+    private fun calculateIndicatorPosition(): Float = when {
+        // If drag hasn't gone past the threshold, the position is the adjustedDistancePulled.
+        adjustedDistancePulled <= threshold -> adjustedDistancePulled
+        else -> {
+            // How far beyond the threshold pull has gone, as a percentage of the threshold.
+            val overshootPercent = abs(progress) - 1.0f
+            // Limit the overshoot to 200%. Linear between 0 and 200.
+            val linearTension = overshootPercent.coerceIn(0f, 2f)
+            // Non-linear tension. Increases with linearTension, but at a decreasing rate.
+            val tensionPercent = linearTension - linearTension.pow(2) / 4
+            // The additional offset beyond the threshold.
+            val extraOffset = threshold * tensionPercent
+            threshold + extraOffset
+        }
+    }
+}
+
+/**
+ * Default parameter values for [rememberPullRefreshState].
+ */
+object PullRefreshDefaults {
+    /**
+     * If the indicator is below this threshold offset when it is released, a refresh
+     * will be triggered.
+     */
+    val RefreshThreshold = 80.dp
+
+    /**
+     * The offset at which the indicator should be rendered whilst a refresh is occurring.
+     */
+    val RefreshingOffset = 56.dp
+}
+
+/**
+ * The distance pulled is multiplied by this value to give us the adjusted distance pulled, which
+ * is used in calculating the indicator position (when the adjusted distance pulled is less than
+ * the refresh threshold, it is the indicator position, otherwise the indicator position is
+ * derived from the progress).
+ */
+private const val DragMultiplier = 0.5f

app/src/main/java/com/vitorpamplona/amethyst/Amethyst.kt

@@ -0,0 +1,85 @@
+package com.vitorpamplona.amethyst
+
+import android.app.Application
+import android.content.Context
+import android.os.StrictMode
+import android.os.StrictMode.ThreadPolicy
+import android.os.StrictMode.VmPolicy
+import android.util.Log
+import coil.ImageLoader
+import coil.disk.DiskCache
+import com.vitorpamplona.amethyst.service.playback.VideoCache
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.GlobalScope
+import kotlinx.coroutines.SupervisorJob
+import kotlinx.coroutines.cancel
+import kotlinx.coroutines.launch
+import java.io.File
+import kotlin.time.measureTimedValue
+
+class Amethyst : Application() {
+    val applicationIOScope = CoroutineScope(Dispatchers.IO + SupervisorJob())
+
+    override fun onTerminate() {
+        super.onTerminate()
+        applicationIOScope.cancel()
+    }
+
+    val videoCache: VideoCache by lazy {
+        val newCache = VideoCache()
+        newCache.initFileCache(this)
+        newCache
+    }
+
+    private val imageCache: DiskCache by lazy {
+        DiskCache.Builder()
+            .directory(applicationContext.safeCacheDir.resolve("image_cache"))
+            .maxSizePercent(0.2)
+            .maximumMaxSizeBytes(500L * 1024 * 1024) // 250MB
+            .build()
+    }
+
+    override fun onCreate() {
+        super.onCreate()
+        instance = this
+
+        if (BuildConfig.DEBUG) {
+            StrictMode.setThreadPolicy(
+                ThreadPolicy.Builder()
+                    .detectAll()
+                    .penaltyLog()
+                    .build()
+            )
+            StrictMode.setVmPolicy(
+                VmPolicy.Builder()
+                    .detectAll()
+                    .penaltyLog()
+                    .build()
+            )
+        }
+
+        GlobalScope.launch(Dispatchers.IO) {
+            val (value, elapsed) = measureTimedValue {
+                // initializes the video cache in a thread
+                videoCache
+            }
+            Log.d("Rendering Metrics", "VideoCache initialized in $elapsed")
+        }
+    }
+
+    fun imageLoaderBuilder(): ImageLoader.Builder {
+        return ImageLoader.Builder(applicationContext).diskCache { imageCache }
+    }
+
+    companion object {
+        lateinit var instance: Amethyst
+            private set
+    }
+}
+
+internal val Context.safeCacheDir: File
+    get() {
+        val cacheDir = checkNotNull(cacheDir) { "cacheDir == null" }
+        return cacheDir.apply { mkdirs() }
+    }

app/src/main/java/com/vitorpamplona/amethyst/EncryptedStorage.kt

@@ -0,0 +1,30 @@
+package com.vitorpamplona.amethyst
+
+import androidx.security.crypto.EncryptedSharedPreferences
+import androidx.security.crypto.MasterKey
+
+object EncryptedStorage {
+    private const val PREFERENCES_NAME = "secret_keeper"
+
+    // returns the preferences for each account or a global file if null.
+    fun prefsFileName(npub: String? = null): String {
+        return if (npub == null) PREFERENCES_NAME else "${PREFERENCES_NAME}_$npub"
+    }
+
+    fun preferences(npub: String? = null): EncryptedSharedPreferences {
+        val context = Amethyst.instance
+        val masterKey: MasterKey = MasterKey.Builder(context, MasterKey.DEFAULT_MASTER_KEY_ALIAS)
+            .setKeyScheme(MasterKey.KeyScheme.AES256_GCM)
+            .build()
+
+        val preferencesName = prefsFileName(npub)
+
+        return EncryptedSharedPreferences.create(
+            context,
+            preferencesName,
+            masterKey,
+            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
+            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
+        ) as EncryptedSharedPreferences
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/KeyStorage.kt

@@ -1,22 +0,0 @@
-package com.vitorpamplona.amethyst
-
-import android.content.Context
-import androidx.security.crypto.EncryptedSharedPreferences
-import androidx.security.crypto.MasterKeys
-
-class KeyStorage {
-
-  fun encryptedPreferences(context: Context): EncryptedSharedPreferences {
-    val secretKey: String = MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC);
-    val preferencesName = "secret_keeper"
-
-    return EncryptedSharedPreferences.create(
-      preferencesName,
-      secretKey,
-      context,
-      EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-      EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-    ) as EncryptedSharedPreferences
-  }
-
-}

app/src/main/java/com/vitorpamplona/amethyst/LocalPreferences.kt

@@ -0,0 +1,517 @@
+package com.vitorpamplona.amethyst
+
+import android.annotation.SuppressLint
+import android.content.Context
+import android.content.SharedPreferences
+import android.util.Log
+import androidx.compose.runtime.Immutable
+import com.fasterxml.jackson.module.kotlin.readValue
+import com.vitorpamplona.amethyst.model.Account
+import com.vitorpamplona.amethyst.model.BooleanType
+import com.vitorpamplona.amethyst.model.ConnectivityType
+import com.vitorpamplona.amethyst.model.DefaultReactions
+import com.vitorpamplona.amethyst.model.DefaultZapAmounts
+import com.vitorpamplona.amethyst.model.GLOBAL_FOLLOWS
+import com.vitorpamplona.amethyst.model.KIND3_FOLLOWS
+import com.vitorpamplona.amethyst.model.Nip47URI
+import com.vitorpamplona.amethyst.model.RelaySetupInfo
+import com.vitorpamplona.amethyst.model.ServersAvailable
+import com.vitorpamplona.amethyst.model.Settings
+import com.vitorpamplona.amethyst.model.ThemeType
+import com.vitorpamplona.amethyst.model.parseBooleanType
+import com.vitorpamplona.amethyst.model.parseConnectivityType
+import com.vitorpamplona.amethyst.model.parseThemeType
+import com.vitorpamplona.amethyst.service.HttpClient
+import com.vitorpamplona.amethyst.service.checkNotInMainThread
+import com.vitorpamplona.quartz.crypto.KeyPair
+import com.vitorpamplona.quartz.encoders.hexToByteArray
+import com.vitorpamplona.quartz.encoders.toHexKey
+import com.vitorpamplona.quartz.encoders.toNpub
+import com.vitorpamplona.quartz.events.ContactListEvent
+import com.vitorpamplona.quartz.events.Event
+import com.vitorpamplona.quartz.events.LnZapEvent
+import com.vitorpamplona.quartz.signers.ExternalSignerLauncher
+import com.vitorpamplona.quartz.signers.NostrSignerExternal
+import com.vitorpamplona.quartz.signers.NostrSignerInternal
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.withContext
+import java.io.File
+import java.util.Locale
+
+// Release mode (!BuildConfig.DEBUG) always uses encrypted preferences
+// To use plaintext SharedPreferences for debugging, set this to true
+// It will only apply in Debug builds
+private const val DEBUG_PLAINTEXT_PREFERENCES = false
+private const val DEBUG_PREFERENCES_NAME = "debug_prefs"
+
+@Immutable
+data class AccountInfo(
+    val npub: String,
+    val hasPrivKey: Boolean,
+    val loggedInWithExternalSigner: Boolean
+)
+
+private object PrefKeys {
+    const val CURRENT_ACCOUNT = "currently_logged_in_account"
+    const val SAVED_ACCOUNTS = "all_saved_accounts"
+    const val NOSTR_PRIVKEY = "nostr_privkey"
+    const val NOSTR_PUBKEY = "nostr_pubkey"
+    const val FOLLOWING_CHANNELS = "following_channels"
+    const val FOLLOWING_COMMUNITIES = "following_communities"
+    const val HIDDEN_USERS = "hidden_users"
+    const val RELAYS = "relays"
+    const val DONT_TRANSLATE_FROM = "dontTranslateFrom"
+    const val LANGUAGE_PREFS = "languagePreferences"
+    const val TRANSLATE_TO = "translateTo"
+    const val ZAP_AMOUNTS = "zapAmounts"
+    const val REACTION_CHOICES = "reactionChoices"
+    const val DEFAULT_ZAPTYPE = "defaultZapType"
+    const val DEFAULT_FILE_SERVER = "defaultFileServer"
+    const val DEFAULT_HOME_FOLLOW_LIST = "defaultHomeFollowList"
+    const val DEFAULT_STORIES_FOLLOW_LIST = "defaultStoriesFollowList"
+    const val DEFAULT_NOTIFICATION_FOLLOW_LIST = "defaultNotificationFollowList"
+    const val DEFAULT_DISCOVERY_FOLLOW_LIST = "defaultDiscoveryFollowList"
+    const val ZAP_PAYMENT_REQUEST_SERVER = "zapPaymentServer"
+    const val LATEST_CONTACT_LIST = "latestContactList"
+    const val HIDE_DELETE_REQUEST_DIALOG = "hide_delete_request_dialog"
+    const val HIDE_BLOCK_ALERT_DIALOG = "hide_block_alert_dialog"
+    const val HIDE_NIP_24_WARNING_DIALOG = "hide_nip24_warning_dialog"
+    const val USE_PROXY = "use_proxy"
+    const val PROXY_PORT = "proxy_port"
+    const val SHOW_SENSITIVE_CONTENT = "show_sensitive_content"
+    const val WARN_ABOUT_REPORTS = "warn_about_reports"
+    const val FILTER_SPAM_FROM_STRANGERS = "filter_spam_from_strangers"
+    const val LAST_READ_PER_ROUTE = "last_read_route_per_route"
+    const val AUTOMATICALLY_SHOW_IMAGES = "automatically_show_images"
+    const val AUTOMATICALLY_START_PLAYBACK = "automatically_start_playback"
+    const val THEME = "theme"
+    const val PREFERRED_LANGUAGE = "preferred_Language"
+    const val AUTOMATICALLY_LOAD_URL_PREVIEW = "automatically_load_url_preview"
+    const val AUTOMATICALLY_HIDE_NAV_BARS = "automatically_hide_nav_bars"
+    const val LOGIN_WITH_EXTERNAL_SIGNER = "login_with_external_signer"
+    const val AUTOMATICALLY_SHOW_PROFILE_PICTURE = "automatically_show_profile_picture"
+    const val SIGNER_PACKAGE_NAME = "signer_package_name"
+
+    const val ALL_ACCOUNT_INFO = "all_saved_accounts_info"
+    const val SHARED_SETTINGS = "shared_settings"
+}
+
+object LocalPreferences {
+    private const val comma = ","
+
+    private var _currentAccount: String? = null
+    private var _savedAccounts: List<AccountInfo>? = null
+
+    suspend fun currentAccount(): String? {
+        if (_currentAccount == null) {
+            _currentAccount = encryptedPreferences().getString(PrefKeys.CURRENT_ACCOUNT, null)
+        }
+        return _currentAccount
+    }
+
+    private suspend fun updateCurrentAccount(npub: String) {
+        if (_currentAccount != npub) {
+            _currentAccount = npub
+
+            encryptedPreferences().edit().apply {
+                putString(PrefKeys.CURRENT_ACCOUNT, npub)
+            }.apply()
+        }
+    }
+
+    private fun savedAccounts(): List<AccountInfo> {
+        if (_savedAccounts == null) {
+            with(encryptedPreferences()) {
+                val newSystemOfAccounts = getString(PrefKeys.ALL_ACCOUNT_INFO, "[]")?.let {
+                    Event.mapper.readValue<List<AccountInfo>>(it)
+                }
+
+                if (newSystemOfAccounts != null && newSystemOfAccounts.isNotEmpty()) {
+                    _savedAccounts = newSystemOfAccounts
+                } else {
+                    val oldAccounts = getString(PrefKeys.SAVED_ACCOUNTS, null)?.split(comma) ?: listOf()
+
+                    val migrated = oldAccounts.map { npub ->
+                        AccountInfo(
+                            npub,
+                            encryptedPreferences(npub).getBoolean(PrefKeys.LOGIN_WITH_EXTERNAL_SIGNER, false),
+                            (encryptedPreferences(npub).getString(PrefKeys.NOSTR_PRIVKEY, "") ?: "").isNotBlank()
+                        )
+                    }
+
+                    _savedAccounts = migrated
+                }
+            }
+        }
+        return _savedAccounts!!
+    }
+
+    private suspend fun updateSavedAccounts(accounts: List<AccountInfo>) = withContext(Dispatchers.IO) {
+        if (_savedAccounts != accounts) {
+            _savedAccounts = accounts
+
+            encryptedPreferences().edit().apply {
+                putString(PrefKeys.ALL_ACCOUNT_INFO, Event.mapper.writeValueAsString(accounts))
+            }.apply()
+        }
+    }
+
+    private val prefsDirPath: String
+        get() = "${Amethyst.instance.filesDir.parent}/shared_prefs/"
+
+    private suspend fun addAccount(accInfo: AccountInfo) {
+        val accounts = savedAccounts().filter { it.npub != accInfo.npub }.plus(accInfo)
+        updateSavedAccounts(accounts)
+    }
+
+    private suspend fun setCurrentAccount(account: Account) = withContext(Dispatchers.IO) {
+        val npub = account.userProfile().pubkeyNpub()
+        val accInfo = AccountInfo(
+            npub,
+            account.isWriteable(),
+            account.signer is NostrSignerExternal
+        )
+        updateCurrentAccount(npub)
+        addAccount(accInfo)
+    }
+
+    suspend fun switchToAccount(accountInfo: AccountInfo) = withContext(Dispatchers.IO) {
+        updateCurrentAccount(accountInfo.npub)
+    }
+
+    /**
+     * Removes the account from the app level shared preferences
+     */
+    private suspend fun removeAccount(accountInfo: AccountInfo) {
+        val accounts = savedAccounts().filter { it.npub != accountInfo.npub }
+        updateSavedAccounts(accounts)
+    }
+
+    /**
+     * Deletes the npub-specific shared preference file
+     */
+    private fun deleteUserPreferenceFile(npub: String) {
+        checkNotInMainThread()
+
+        val prefsDir = File(prefsDirPath)
+        prefsDir.list()?.forEach {
+            if (it.contains(npub)) {
+                File(prefsDir, it).delete()
+            }
+        }
+    }
+
+    private fun encryptedPreferences(npub: String? = null): SharedPreferences {
+        checkNotInMainThread()
+
+        return if (BuildConfig.DEBUG && DEBUG_PLAINTEXT_PREFERENCES) {
+            val preferenceFile = if (npub == null) DEBUG_PREFERENCES_NAME else "${DEBUG_PREFERENCES_NAME}_$npub"
+            Amethyst.instance.getSharedPreferences(preferenceFile, Context.MODE_PRIVATE)
+        } else {
+            return EncryptedStorage.preferences(npub)
+        }
+    }
+
+    /**
+     * Clears the preferences for a given npub, deletes the preferences xml file,
+     * and switches the user to the first account in the list if it exists
+     *
+     * We need to use `commit()` to write changes to disk and release the file
+     * lock so that it can be deleted. If we use `apply()` there is a race
+     * condition and the file will probably not be deleted
+     */
+    @SuppressLint("ApplySharedPref")
+    suspend fun updatePrefsForLogout(accountInfo: AccountInfo) = withContext(Dispatchers.IO) {
+        val userPrefs = encryptedPreferences(accountInfo.npub)
+        userPrefs.edit().clear().commit()
+        removeAccount(accountInfo)
+        deleteUserPreferenceFile(accountInfo.npub)
+
+        if (savedAccounts().isEmpty()) {
+            encryptedPreferences().edit().clear().apply()
+        } else if (currentAccount() == accountInfo.npub) {
+            updateCurrentAccount(savedAccounts().elementAt(0).npub)
+        }
+    }
+
+    suspend fun updatePrefsForLogin(account: Account) {
+        setCurrentAccount(account)
+        saveToEncryptedStorage(account)
+    }
+
+    fun allSavedAccounts(): List<AccountInfo> {
+        return savedAccounts()
+    }
+
+    suspend fun saveToEncryptedStorage(account: Account) = withContext(Dispatchers.IO) {
+        checkNotInMainThread()
+
+        val prefs = encryptedPreferences(account.userProfile().pubkeyNpub())
+        prefs.edit().apply {
+            putBoolean(PrefKeys.LOGIN_WITH_EXTERNAL_SIGNER, account.signer is NostrSignerExternal)
+            if (account.signer is NostrSignerExternal) {
+                remove(PrefKeys.NOSTR_PRIVKEY)
+                putString(PrefKeys.SIGNER_PACKAGE_NAME, account.signer.launcher.signerPackageName)
+            } else {
+                account.keyPair.privKey?.let { putString(PrefKeys.NOSTR_PRIVKEY, it.toHexKey()) }
+            }
+            account.keyPair.pubKey.let { putString(PrefKeys.NOSTR_PUBKEY, it.toHexKey()) }
+            putString(PrefKeys.RELAYS, Event.mapper.writeValueAsString(account.localRelays))
+            putStringSet(PrefKeys.DONT_TRANSLATE_FROM, account.dontTranslateFrom)
+            putString(PrefKeys.LANGUAGE_PREFS, Event.mapper.writeValueAsString(account.languagePreferences))
+            putString(PrefKeys.TRANSLATE_TO, account.translateTo)
+            putString(PrefKeys.ZAP_AMOUNTS, Event.mapper.writeValueAsString(account.zapAmountChoices))
+            putString(PrefKeys.REACTION_CHOICES, Event.mapper.writeValueAsString(account.reactionChoices))
+            putString(PrefKeys.DEFAULT_ZAPTYPE, account.defaultZapType.name)
+            putString(PrefKeys.DEFAULT_FILE_SERVER, account.defaultFileServer.name)
+            putString(PrefKeys.DEFAULT_HOME_FOLLOW_LIST, account.defaultHomeFollowList.value)
+            putString(PrefKeys.DEFAULT_STORIES_FOLLOW_LIST, account.defaultStoriesFollowList.value)
+            putString(PrefKeys.DEFAULT_NOTIFICATION_FOLLOW_LIST, account.defaultNotificationFollowList.value)
+            putString(PrefKeys.DEFAULT_DISCOVERY_FOLLOW_LIST, account.defaultDiscoveryFollowList.value)
+            putString(PrefKeys.ZAP_PAYMENT_REQUEST_SERVER, Event.mapper.writeValueAsString(account.zapPaymentRequest))
+            putString(PrefKeys.LATEST_CONTACT_LIST, Event.mapper.writeValueAsString(account.backupContactList))
+            putBoolean(PrefKeys.HIDE_DELETE_REQUEST_DIALOG, account.hideDeleteRequestDialog)
+            putBoolean(PrefKeys.HIDE_NIP_24_WARNING_DIALOG, account.hideNIP24WarningDialog)
+            putBoolean(PrefKeys.HIDE_BLOCK_ALERT_DIALOG, account.hideBlockAlertDialog)
+            putBoolean(PrefKeys.USE_PROXY, account.proxy != null)
+            putInt(PrefKeys.PROXY_PORT, account.proxyPort)
+            putBoolean(PrefKeys.WARN_ABOUT_REPORTS, account.warnAboutPostsWithReports)
+            putBoolean(PrefKeys.FILTER_SPAM_FROM_STRANGERS, account.filterSpamFromStrangers)
+            putString(PrefKeys.LAST_READ_PER_ROUTE, Event.mapper.writeValueAsString(account.lastReadPerRoute))
+
+            if (account.showSensitiveContent == null) {
+                remove(PrefKeys.SHOW_SENSITIVE_CONTENT)
+            } else {
+                putBoolean(PrefKeys.SHOW_SENSITIVE_CONTENT, account.showSensitiveContent!!)
+            }
+        }.apply()
+    }
+
+    suspend fun loadCurrentAccountFromEncryptedStorage(): Account? {
+        val acc = loadCurrentAccountFromEncryptedStorage(currentAccount())
+        acc?.registerObservers()
+        return acc
+    }
+
+    suspend fun migrateOldSharedSettings(): Settings? {
+        val prefs = encryptedPreferences()
+        loadOldSharedSettings(prefs)?.let {
+            saveSharedSettings(it, prefs)
+            return it
+        }
+        return null
+    }
+
+    suspend fun saveSharedSettings(sharedSettings: Settings, prefs: SharedPreferences = encryptedPreferences()) {
+        with(prefs.edit()) {
+            putString(PrefKeys.SHARED_SETTINGS, Event.mapper.writeValueAsString(sharedSettings))
+            apply()
+        }
+    }
+
+    suspend fun loadSharedSettings(prefs: SharedPreferences = encryptedPreferences()): Settings? {
+        with(prefs) {
+            return try {
+                getString(PrefKeys.SHARED_SETTINGS, "{}")?.let {
+                    Event.mapper.readValue<Settings>(it)
+                }
+            } catch (e: Throwable) {
+                Log.w("LocalPreferences", "Unable to decode shared preferences: ${getString(PrefKeys.SHARED_SETTINGS, null)}", e)
+                e.printStackTrace()
+                null
+            }
+        }
+    }
+
+    @Deprecated("Turned into a single JSON object")
+    suspend fun loadOldSharedSettings(prefs: SharedPreferences = encryptedPreferences()): Settings? {
+        with(prefs) {
+            if (!contains(PrefKeys.AUTOMATICALLY_START_PLAYBACK)) {
+                return null
+            }
+
+            val automaticallyShowImages = if (contains(PrefKeys.AUTOMATICALLY_SHOW_IMAGES)) {
+                parseConnectivityType(getBoolean(PrefKeys.AUTOMATICALLY_SHOW_IMAGES, false))
+            } else {
+                ConnectivityType.ALWAYS
+            }
+
+            val automaticallyStartPlayback = if (contains(PrefKeys.AUTOMATICALLY_START_PLAYBACK)) {
+                parseConnectivityType(getBoolean(PrefKeys.AUTOMATICALLY_START_PLAYBACK, false))
+            } else {
+                ConnectivityType.ALWAYS
+            }
+            val automaticallyShowUrlPreview = if (contains(PrefKeys.AUTOMATICALLY_LOAD_URL_PREVIEW)) {
+                parseConnectivityType(getBoolean(PrefKeys.AUTOMATICALLY_LOAD_URL_PREVIEW, false))
+            } else {
+                ConnectivityType.ALWAYS
+            }
+            val automaticallyHideNavigationBars = if (contains(PrefKeys.AUTOMATICALLY_HIDE_NAV_BARS)) {
+                parseBooleanType(getBoolean(PrefKeys.AUTOMATICALLY_HIDE_NAV_BARS, false))
+            } else {
+                BooleanType.ALWAYS
+            }
+
+            val automaticallyShowProfilePictures = if (contains(PrefKeys.AUTOMATICALLY_SHOW_PROFILE_PICTURE)) {
+                parseConnectivityType(getBoolean(PrefKeys.AUTOMATICALLY_SHOW_PROFILE_PICTURE, false))
+            } else {
+                ConnectivityType.ALWAYS
+            }
+
+            val themeType = if (contains(PrefKeys.THEME)) {
+                parseThemeType(getInt(PrefKeys.THEME, ThemeType.SYSTEM.screenCode))
+            } else {
+                ThemeType.SYSTEM
+            }
+
+            return Settings(
+                themeType,
+                getString(PrefKeys.PREFERRED_LANGUAGE, null)?.ifBlank { null },
+                automaticallyShowImages,
+                automaticallyStartPlayback,
+                automaticallyShowUrlPreview,
+                automaticallyHideNavigationBars,
+                automaticallyShowProfilePictures,
+                false,
+                false
+            )
+        }
+    }
+
+    suspend fun loadCurrentAccountFromEncryptedStorage(npub: String?): Account? = withContext(Dispatchers.IO) {
+        checkNotInMainThread()
+
+        return@withContext with(encryptedPreferences(npub)) {
+            val pubKey = getString(PrefKeys.NOSTR_PUBKEY, null) ?: return@with null
+            val loginWithExternalSigner = getBoolean(PrefKeys.LOGIN_WITH_EXTERNAL_SIGNER, false)
+            val privKey = if (loginWithExternalSigner) null else getString(PrefKeys.NOSTR_PRIVKEY, null)
+
+            val followingChannels = getStringSet(PrefKeys.FOLLOWING_CHANNELS, null) ?: setOf()
+            val followingCommunities = getStringSet(PrefKeys.FOLLOWING_COMMUNITIES, null) ?: setOf()
+            val hiddenUsers = getStringSet(PrefKeys.HIDDEN_USERS, emptySet()) ?: setOf()
+            val localRelays = getString(PrefKeys.RELAYS, "[]")?.let {
+                println("LocalRelays: $it")
+                Event.mapper.readValue<Set<RelaySetupInfo>?>(it)
+            } ?: setOf<RelaySetupInfo>()
+
+            val dontTranslateFrom = getStringSet(PrefKeys.DONT_TRANSLATE_FROM, null) ?: setOf()
+            val translateTo = getString(PrefKeys.TRANSLATE_TO, null) ?: Locale.getDefault().language
+            val defaultHomeFollowList = getString(PrefKeys.DEFAULT_HOME_FOLLOW_LIST, null) ?: KIND3_FOLLOWS
+            val defaultStoriesFollowList = getString(PrefKeys.DEFAULT_STORIES_FOLLOW_LIST, null) ?: GLOBAL_FOLLOWS
+            val defaultNotificationFollowList = getString(PrefKeys.DEFAULT_NOTIFICATION_FOLLOW_LIST, null) ?: GLOBAL_FOLLOWS
+            val defaultDiscoveryFollowList = getString(PrefKeys.DEFAULT_DISCOVERY_FOLLOW_LIST, null) ?: GLOBAL_FOLLOWS
+
+            val zapAmountChoices = getString(PrefKeys.ZAP_AMOUNTS, "[]")?.let {
+                Event.mapper.readValue<List<Long>?>(it)
+            }?.ifEmpty { DefaultZapAmounts } ?: DefaultZapAmounts
+
+            val reactionChoices = getString(PrefKeys.REACTION_CHOICES, "[]")?.let {
+                Event.mapper.readValue<List<String>?>(it)
+            }?.ifEmpty { DefaultReactions } ?: DefaultReactions
+
+            val defaultZapType = getString(PrefKeys.DEFAULT_ZAPTYPE, "")?.let { serverName ->
+                LnZapEvent.ZapType.values().firstOrNull() { it.name == serverName }
+            } ?: LnZapEvent.ZapType.PUBLIC
+
+            val defaultFileServer = getString(PrefKeys.DEFAULT_FILE_SERVER, "")?.let { serverName ->
+                ServersAvailable.values().firstOrNull() { it.name == serverName }
+            } ?: ServersAvailable.NOSTR_BUILD
+
+            val zapPaymentRequestServer = try {
+                getString(PrefKeys.ZAP_PAYMENT_REQUEST_SERVER, null)?.let {
+                    Event.mapper.readValue<Nip47URI?>(it)
+                }
+            } catch (e: Throwable) {
+                Log.w("LocalPreferences", "Error Decoding Zap Payment Request Server ${getString(PrefKeys.ZAP_PAYMENT_REQUEST_SERVER, null)}", e)
+                e.printStackTrace()
+                null
+            }
+
+            val latestContactList = try {
+                getString(PrefKeys.LATEST_CONTACT_LIST, null)?.let {
+                    println("Decoding Contact List: " + it)
+                    if (it != null) {
+                        Event.fromJson(it) as ContactListEvent?
+                    } else {
+                        null
+                    }
+                }
+            } catch (e: Throwable) {
+                Log.w("LocalPreferences", "Error Decoding Contact List ${getString(PrefKeys.LATEST_CONTACT_LIST, null)}", e)
+                null
+            }
+
+            val languagePreferences = try {
+                getString(PrefKeys.LANGUAGE_PREFS, null)?.let {
+                    Event.mapper.readValue<Map<String, String>?>(it)
+                } ?: mapOf()
+            } catch (e: Throwable) {
+                Log.w("LocalPreferences", "Error Decoding Language Preferences ${getString(PrefKeys.LANGUAGE_PREFS, null)}", e)
+                e.printStackTrace()
+                mapOf()
+            }
+
+            val hideDeleteRequestDialog = getBoolean(PrefKeys.HIDE_DELETE_REQUEST_DIALOG, false)
+            val hideBlockAlertDialog = getBoolean(PrefKeys.HIDE_BLOCK_ALERT_DIALOG, false)
+            val hideNIP24WarningDialog = getBoolean(PrefKeys.HIDE_NIP_24_WARNING_DIALOG, false)
+            val useProxy = getBoolean(PrefKeys.USE_PROXY, false)
+            val proxyPort = getInt(PrefKeys.PROXY_PORT, 9050)
+            val proxy = HttpClient.initProxy(useProxy, "127.0.0.1", proxyPort)
+
+            val showSensitiveContent = if (contains(PrefKeys.SHOW_SENSITIVE_CONTENT)) {
+                getBoolean(PrefKeys.SHOW_SENSITIVE_CONTENT, false)
+            } else {
+                null
+            }
+            val filterSpam = getBoolean(PrefKeys.FILTER_SPAM_FROM_STRANGERS, true)
+            val warnAboutReports = getBoolean(PrefKeys.WARN_ABOUT_REPORTS, true)
+
+            val lastReadPerRoute = try {
+                getString(PrefKeys.LAST_READ_PER_ROUTE, null)?.let {
+                    Event.mapper.readValue<Map<String, Long>?>(it)
+                } ?: mapOf()
+            } catch (e: Throwable) {
+                Log.w("LocalPreferences", "Error Decoding Last Read per route ${getString(PrefKeys.LAST_READ_PER_ROUTE, null)}", e)
+                e.printStackTrace()
+                mapOf()
+            }
+
+            val keyPair = KeyPair(privKey = privKey?.hexToByteArray(), pubKey = pubKey.hexToByteArray())
+            val signer = if (loginWithExternalSigner) {
+                val packageName = getString(PrefKeys.SIGNER_PACKAGE_NAME, null) ?: "com.greenart7c3.nostrsigner"
+                NostrSignerExternal(pubKey, ExternalSignerLauncher(pubKey.hexToByteArray().toNpub(), packageName))
+            } else {
+                NostrSignerInternal(keyPair)
+            }
+
+            return@with Account(
+                keyPair = keyPair,
+                signer = signer,
+                localRelays = localRelays,
+                dontTranslateFrom = dontTranslateFrom,
+                languagePreferences = languagePreferences,
+                translateTo = translateTo,
+                zapAmountChoices = zapAmountChoices,
+                reactionChoices = reactionChoices,
+                defaultZapType = defaultZapType,
+                defaultFileServer = defaultFileServer,
+                defaultHomeFollowList = MutableStateFlow(defaultHomeFollowList),
+                defaultStoriesFollowList = MutableStateFlow(defaultStoriesFollowList),
+                defaultNotificationFollowList = MutableStateFlow(defaultNotificationFollowList),
+                defaultDiscoveryFollowList = MutableStateFlow(defaultDiscoveryFollowList),
+                zapPaymentRequest = zapPaymentRequestServer,
+                hideDeleteRequestDialog = hideDeleteRequestDialog,
+                hideBlockAlertDialog = hideBlockAlertDialog,
+                hideNIP24WarningDialog = hideNIP24WarningDialog,
+                backupContactList = latestContactList,
+                proxy = proxy,
+                proxyPort = proxyPort,
+                showSensitiveContent = showSensitiveContent,
+                warnAboutPostsWithReports = warnAboutReports,
+                filterSpamFromStrangers = filterSpam,
+                lastReadPerRoute = lastReadPerRoute
+            )
+        }
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/OptOutFromFilters.kt

@@ -0,0 +1,11 @@
+package com.vitorpamplona.amethyst
+
+object OptOutFromFilters {
+    var warnAboutPostsWithReports: Boolean = true
+    var filterSpamFromStrangers: Boolean = true
+
+    fun start(warnAboutReports: Boolean, filterSpam: Boolean) {
+        warnAboutPostsWithReports = warnAboutReports
+        filterSpamFromStrangers = filterSpam
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/ServiceManager.kt

@@ -0,0 +1,184 @@
+package com.vitorpamplona.amethyst
+
+import android.os.Build
+import android.util.Log
+import androidx.compose.runtime.Stable
+import coil.Coil
+import coil.decode.GifDecoder
+import coil.decode.ImageDecoderDecoder
+import coil.decode.SvgDecoder
+import coil.size.Precision
+import com.vitorpamplona.amethyst.model.Account
+import com.vitorpamplona.amethyst.model.LocalCache
+import com.vitorpamplona.amethyst.service.HttpClient
+import com.vitorpamplona.amethyst.service.NostrAccountDataSource
+import com.vitorpamplona.amethyst.service.NostrChannelDataSource
+import com.vitorpamplona.amethyst.service.NostrChatroomDataSource
+import com.vitorpamplona.amethyst.service.NostrChatroomListDataSource
+import com.vitorpamplona.amethyst.service.NostrCommunityDataSource
+import com.vitorpamplona.amethyst.service.NostrDiscoveryDataSource
+import com.vitorpamplona.amethyst.service.NostrGeohashDataSource
+import com.vitorpamplona.amethyst.service.NostrHashtagDataSource
+import com.vitorpamplona.amethyst.service.NostrHomeDataSource
+import com.vitorpamplona.amethyst.service.NostrSearchEventOrUserDataSource
+import com.vitorpamplona.amethyst.service.NostrSingleChannelDataSource
+import com.vitorpamplona.amethyst.service.NostrSingleEventDataSource
+import com.vitorpamplona.amethyst.service.NostrSingleUserDataSource
+import com.vitorpamplona.amethyst.service.NostrThreadDataSource
+import com.vitorpamplona.amethyst.service.NostrUserProfileDataSource
+import com.vitorpamplona.amethyst.service.NostrVideoDataSource
+import com.vitorpamplona.amethyst.service.relays.Client
+import com.vitorpamplona.quartz.encoders.decodePublicKeyAsHexOrNull
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.GlobalScope
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.launch
+
+@Stable
+class ServiceManager {
+    private var isStarted: Boolean = false // to not open amber in a loop trying to use auth relays and registering for notifications
+    private var account: Account? = null
+
+    private fun start(account: Account) {
+        this.account = account
+        start()
+    }
+
+    private fun start() {
+        Log.d("ServiceManager", "Pre Starting Relay Services $isStarted $account")
+        if (isStarted && account != null) {
+            return
+        }
+        Log.d("ServiceManager", "Starting Relay Services")
+
+        val myAccount = account
+
+        // Resets Proxy Use
+        HttpClient.start(account?.proxy)
+        OptOutFromFilters.start(account?.warnAboutPostsWithReports ?: true, account?.filterSpamFromStrangers ?: true)
+        Coil.setImageLoader {
+            Amethyst.instance.imageLoaderBuilder().components {
+                if (Build.VERSION.SDK_INT >= 28) {
+                    add(ImageDecoderDecoder.Factory())
+                } else {
+                    add(GifDecoder.Factory())
+                }
+                add(SvgDecoder.Factory())
+            } // .logger(DebugLogger())
+                .okHttpClient { HttpClient.getHttpClient() }
+                .precision(Precision.INEXACT)
+                .respectCacheHeaders(false)
+                .build()
+        }
+
+        if (myAccount != null) {
+            Client.connect(myAccount.activeRelays() ?: myAccount.convertLocalRelays())
+
+            // start services
+            NostrAccountDataSource.account = myAccount
+            NostrHomeDataSource.account = myAccount
+            NostrChatroomListDataSource.account = myAccount
+            NostrVideoDataSource.account = myAccount
+            NostrDiscoveryDataSource.account = myAccount
+
+            // Notification Elements
+            NostrHomeDataSource.start()
+            NostrAccountDataSource.start()
+            GlobalScope.launch(Dispatchers.IO) {
+                delay(3000)
+                NostrChatroomListDataSource.start()
+                NostrDiscoveryDataSource.start()
+                NostrVideoDataSource.start()
+            }
+
+            // More Info Data Sources
+            NostrSingleEventDataSource.start()
+            NostrSingleChannelDataSource.start()
+            NostrSingleUserDataSource.start()
+            isStarted = true
+        }
+    }
+
+    private fun pause() {
+        Log.d("ServiceManager", "Pausing Relay Services")
+
+        NostrAccountDataSource.stop()
+        NostrHomeDataSource.stop()
+        NostrChannelDataSource.stop()
+        NostrChatroomDataSource.stop()
+        NostrChatroomListDataSource.stop()
+        NostrDiscoveryDataSource.stop()
+
+        NostrCommunityDataSource.stop()
+        NostrHashtagDataSource.stop()
+        NostrGeohashDataSource.stop()
+        NostrSearchEventOrUserDataSource.stop()
+        NostrSingleChannelDataSource.stop()
+        NostrSingleEventDataSource.stop()
+        NostrSingleUserDataSource.stop()
+        NostrThreadDataSource.stop()
+        NostrUserProfileDataSource.stop()
+        NostrVideoDataSource.stop()
+
+        Client.disconnect()
+        isStarted = false
+    }
+
+    fun cleanObservers() {
+        LocalCache.cleanObservers()
+    }
+
+    fun trimMemory() {
+        LocalCache.cleanObservers()
+
+        val accounts = LocalPreferences.allSavedAccounts().mapNotNull {
+            decodePublicKeyAsHexOrNull(it.npub)
+        }.toSet()
+
+        account?.let {
+            LocalCache.pruneOldAndHiddenMessages(it)
+            NostrChatroomDataSource.clearEOSEs(it)
+
+            LocalCache.pruneHiddenMessages(it)
+            LocalCache.pruneContactLists(accounts)
+            LocalCache.pruneRepliesAndReactions(accounts)
+            LocalCache.prunePastVersionsOfReplaceables()
+            LocalCache.pruneExpiredEvents()
+        }
+    }
+
+    // This method keeps the pause/start in a Syncronized block to
+    // avoid concurrent pauses and starts.
+    @Synchronized
+    fun forceRestart(account: Account? = null, start: Boolean = true, pause: Boolean = true) {
+        if (pause) {
+            pause()
+        }
+
+        if (start) {
+            if (account != null) {
+                start(account)
+            } else {
+                start()
+            }
+        }
+    }
+
+    fun restartIfDifferentAccount(account: Account) {
+        if (this.account != account) {
+            forceRestart(account, true, true)
+        }
+    }
+
+    fun forceRestart() {
+        forceRestart(null, true, true)
+    }
+
+    fun justStart() {
+        forceRestart(null, true, false)
+    }
+
+    fun pauseForGood() {
+        forceRestart(null, false, true)
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/model/AntiSpamFilter.kt

@@ -0,0 +1,92 @@
+package com.vitorpamplona.amethyst.model
+
+import android.util.Log
+import android.util.LruCache
+import androidx.compose.runtime.Stable
+import androidx.lifecycle.LiveData
+import com.vitorpamplona.amethyst.OptOutFromFilters
+import com.vitorpamplona.amethyst.service.checkNotInMainThread
+import com.vitorpamplona.amethyst.service.relays.Relay
+import com.vitorpamplona.amethyst.ui.components.BundledUpdate
+import com.vitorpamplona.quartz.encoders.HexKey
+import com.vitorpamplona.quartz.encoders.Nip19
+import com.vitorpamplona.quartz.events.Event
+import kotlinx.coroutines.Dispatchers
+
+data class Spammer(val pubkeyHex: HexKey, var duplicatedMessages: Set<HexKey>)
+
+class AntiSpamFilter {
+    val recentMessages = LruCache<Int, String>(1000)
+    val spamMessages = LruCache<Int, Spammer>(1000)
+
+    fun isSpam(event: Event, relay: Relay?): Boolean {
+        checkNotInMainThread()
+
+        if (!OptOutFromFilters.filterSpamFromStrangers) return false
+
+        val idHex = event.id
+
+        // if short message, ok
+        // The idea here is to avoid considering repeated "GM" messages spam.
+        if (event.content.length < 50) return false
+
+        // if the message is actually short but because it cites a user/event, the nostr: string is really long, make it ok.
+        // The idea here is to avoid considering repeated "@Bot, command" messages spam, while still blocking repeated "lnbc..." invoices or fishing urls
+        if (event.content.length < 180 && Nip19.nip19regex.matcher(event.content).find()) return false
+
+        // double list strategy:
+        // if duplicated, it goes into spam. 1000 spam messages are saved into the spam list.
+
+        // Considers tags so that same replies to different people don't count.
+        val hash = (event.content + event.tags.flatten().joinToString(",")).hashCode()
+
+        if ((recentMessages[hash] != null && recentMessages[hash] != idHex) || spamMessages[hash] != null) {
+            Log.w("Potential SPAM Message for sharing", "${Nip19.createNEvent(event.id, event.pubKey, event.kind, null)}")
+            Log.w("Potential SPAM Message", "${event.id} ${recentMessages[hash]} ${spamMessages[hash] != null} ${relay?.url} ${event.content.replace("\n", " | ")}")
+
+            // Log down offenders
+            logOffender(hash, event)
+
+            liveSpam.invalidateData()
+
+            return true
+        }
+
+        recentMessages.put(hash, idHex)
+
+        return false
+    }
+
+    @Synchronized
+    private fun logOffender(hashCode: Int, event: Event) {
+        if (spamMessages.get(hashCode) == null) {
+            spamMessages.put(hashCode, Spammer(event.pubKey, setOf(recentMessages[hashCode], event.id)))
+        } else {
+            val spammer = spamMessages.get(hashCode)
+            spammer.duplicatedMessages = spammer.duplicatedMessages + event.id
+        }
+    }
+
+    val liveSpam: AntiSpamLiveData = AntiSpamLiveData(this)
+}
+
+@Stable
+class AntiSpamLiveData(val cache: AntiSpamFilter) : LiveData<AntiSpamState>(AntiSpamState(cache)) {
+
+    // Refreshes observers in batches.
+    private val bundler = BundledUpdate(300, Dispatchers.IO)
+
+    fun invalidateData() {
+        checkNotInMainThread()
+
+        bundler.invalidate() {
+            checkNotInMainThread()
+
+            if (hasActiveObservers()) {
+                postValue(AntiSpamState(cache))
+            }
+        }
+    }
+}
+
+class AntiSpamState(val cache: AntiSpamFilter)

app/src/main/java/com/vitorpamplona/amethyst/model/Channel.kt

@@ -0,0 +1,176 @@
+package com.vitorpamplona.amethyst.model
+
+import androidx.compose.runtime.Stable
+import androidx.lifecycle.LiveData
+import com.vitorpamplona.amethyst.service.NostrSingleChannelDataSource
+import com.vitorpamplona.amethyst.service.checkNotInMainThread
+import com.vitorpamplona.amethyst.ui.components.BundledUpdate
+import com.vitorpamplona.amethyst.ui.note.toShortenHex
+import com.vitorpamplona.quartz.encoders.ATag
+import com.vitorpamplona.quartz.encoders.Hex
+import com.vitorpamplona.quartz.encoders.HexKey
+import com.vitorpamplona.quartz.encoders.toNote
+import com.vitorpamplona.quartz.events.ChannelCreateEvent
+import com.vitorpamplona.quartz.events.LiveActivitiesEvent
+import kotlinx.coroutines.Dispatchers
+import java.util.concurrent.ConcurrentHashMap
+
+@Stable
+class PublicChatChannel(idHex: String) : Channel(idHex) {
+    var info = ChannelCreateEvent.ChannelData(null, null, null)
+
+    fun updateChannelInfo(creator: User, channelInfo: ChannelCreateEvent.ChannelData, updatedAt: Long) {
+        this.creator = creator
+        this.info = channelInfo
+        this.updatedMetadataAt = updatedAt
+
+        live.invalidateData()
+    }
+
+    override fun toBestDisplayName(): String {
+        return info.name ?: super.toBestDisplayName()
+    }
+
+    override fun summary(): String? {
+        return info.about
+    }
+
+    override fun profilePicture(): String? {
+        if (info.picture.isNullOrBlank()) return super.profilePicture()
+        return info.picture ?: super.profilePicture()
+    }
+
+    override fun anyNameStartsWith(prefix: String): Boolean {
+        return listOfNotNull(info.name, info.about)
+            .filter { it.contains(prefix, true) }.isNotEmpty()
+    }
+}
+
+@Stable
+class LiveActivitiesChannel(val address: ATag) : Channel(address.toTag()) {
+    var info: LiveActivitiesEvent? = null
+
+    override fun idNote() = address.toNAddr()
+    override fun idDisplayNote() = idNote().toShortenHex()
+    fun address() = address
+
+    fun updateChannelInfo(creator: User, channelInfo: LiveActivitiesEvent, updatedAt: Long) {
+        this.info = channelInfo
+        super.updateChannelInfo(creator, updatedAt)
+    }
+
+    override fun toBestDisplayName(): String {
+        return info?.title() ?: super.toBestDisplayName()
+    }
+
+    override fun summary(): String? {
+        return info?.summary()
+    }
+
+    override fun profilePicture(): String? {
+        return info?.image()?.ifBlank { null }
+    }
+
+    override fun anyNameStartsWith(prefix: String): Boolean {
+        return listOfNotNull(info?.title(), info?.summary())
+            .filter { it.contains(prefix, true) }.isNotEmpty()
+    }
+}
+
+@Stable
+abstract class Channel(val idHex: String) {
+    var creator: User? = null
+
+    var updatedMetadataAt: Long = 0
+
+    val notes = ConcurrentHashMap<HexKey, Note>()
+
+    open fun id() = Hex.decode(idHex)
+    open fun idNote() = id().toNote()
+    open fun idDisplayNote() = idNote().toShortenHex()
+
+    open fun toBestDisplayName(): String {
+        return idDisplayNote()
+    }
+
+    open fun summary(): String? {
+        return null
+    }
+
+    open fun creatorName(): String? {
+        return creator?.toBestDisplayName()
+    }
+
+    open fun profilePicture(): String? {
+        return creator?.profilePicture()
+    }
+
+    open fun updateChannelInfo(creator: User, updatedAt: Long) {
+        this.creator = creator
+        this.updatedMetadataAt = updatedAt
+
+        live.invalidateData()
+    }
+
+    fun addNote(note: Note) {
+        notes[note.idHex] = note
+    }
+
+    fun removeNote(note: Note) {
+        notes.remove(note.idHex)
+    }
+
+    fun removeNote(noteHex: String) {
+        notes.remove(noteHex)
+    }
+
+    abstract fun anyNameStartsWith(prefix: String): Boolean
+
+    // Observers line up here.
+    val live: ChannelLiveData = ChannelLiveData(this)
+
+    fun pruneOldAndHiddenMessages(account: Account): Set<Note> {
+        val important = notes.values
+            .filter { it.author?.let { it1 -> account.isHidden(it1) } == false }
+            .sortedWith(compareBy({ it.createdAt() }, { it.idHex }))
+            .reversed()
+            .take(1000)
+            .toSet()
+
+        val toBeRemoved = notes.values.filter { it !in important }.toSet()
+
+        toBeRemoved.forEach {
+            notes.remove(it.idHex)
+        }
+
+        return toBeRemoved
+    }
+}
+
+class ChannelLiveData(val channel: Channel) : LiveData<ChannelState>(ChannelState(channel)) {
+    // Refreshes observers in batches.
+    private val bundler = BundledUpdate(300, Dispatchers.IO)
+
+    fun invalidateData() {
+        checkNotInMainThread()
+
+        bundler.invalidate() {
+            checkNotInMainThread()
+            if (hasActiveObservers()) {
+                postValue(ChannelState(channel))
+            }
+        }
+    }
+
+    override fun onActive() {
+        super.onActive()
+        NostrSingleChannelDataSource.add(channel)
+    }
+
+    override fun onInactive() {
+        super.onInactive()
+        NostrSingleChannelDataSource.remove(channel)
+    }
+}
+
+class ChannelState(val channel: Channel)

app/src/main/java/com/vitorpamplona/amethyst/model/Chatroom.kt

@@ -0,0 +1,63 @@
+package com.vitorpamplona.amethyst.model
+
+import androidx.compose.runtime.Stable
+import com.vitorpamplona.amethyst.service.checkNotInMainThread
+import com.vitorpamplona.quartz.encoders.HexKey
+import com.vitorpamplona.quartz.utils.TimeUtils
+
+@Stable
+class Chatroom() {
+    var roomMessages: Set<Note> = setOf()
+    var subject: String? = null
+    var subjectCreatedAt: Long? = null
+
+    @Synchronized
+    fun addMessageSync(msg: Note) {
+        checkNotInMainThread()
+
+        if (msg !in roomMessages) {
+            roomMessages = roomMessages + msg
+
+            val newSubject = msg.event?.subject()
+
+            if (newSubject != null && (msg.createdAt() ?: 0) > (subjectCreatedAt ?: 0)) {
+                subject = newSubject
+                subjectCreatedAt = msg.createdAt()
+            }
+        }
+    }
+
+    @Synchronized
+    fun removeMessageSync(msg: Note) {
+        checkNotInMainThread()
+
+        if (msg !in roomMessages) {
+            roomMessages = roomMessages + msg
+
+            roomMessages.filter { it.event?.subject() != null }.sortedBy { it.createdAt() }.lastOrNull()?.let {
+                subject = it.event?.subject()
+                subjectCreatedAt = it.createdAt()
+            }
+        }
+    }
+
+    fun senderIntersects(keySet: Set<HexKey>): Boolean {
+        return roomMessages.any { it.author?.pubkeyHex in keySet }
+    }
+
+    fun pruneMessagesToTheLatestOnly(): Set<Note> {
+        val sorted = roomMessages.sortedWith(compareBy({ it.createdAt() }, { it.idHex })).reversed()
+
+        val toKeep = if ((sorted.firstOrNull()?.createdAt() ?: 0) > TimeUtils.oneWeekAgo()) {
+            // Recent messages, keep last 100
+            sorted.take(100).toSet()
+        } else {
+            // Old messages, keep the last one.
+            sorted.take(1).toSet()
+        } + sorted.filter { it.liveSet?.isInUse() ?: false }
+
+        val toRemove = roomMessages.minus(toKeep)
+        roomMessages = toKeep
+        return toRemove
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/model/HashtagIcon.kt

@@ -0,0 +1,34 @@
+package com.vitorpamplona.amethyst.model
+import androidx.compose.foundation.layout.padding
+import androidx.compose.runtime.Immutable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.unit.dp
+import com.vitorpamplona.amethyst.R
+fun checkForHashtagWithIcon(tag: String, primary: Color): HashtagIcon? {
+    return when (tag.lowercase()) {
+        "bitcoin", "btc", "timechain", "bitcoiner", "bitcoiners" -> HashtagIcon(R.drawable.ht_btc, "Bitcoin", Color.Unspecified, Modifier.padding(2.dp, 2.dp, 0.dp, 0.dp))
+        "nostr", "nostrich", "nostriches", "thenostr" -> HashtagIcon(R.drawable.ht_nostr, "Nostr", Color.Unspecified, Modifier.padding(1.dp, 2.dp, 0.dp, 0.dp))
+        "lightning", "lightningnetwork" -> HashtagIcon(R.drawable.ht_lightning, "Lightning", Color.Unspecified, Modifier.padding(1.dp, 3.dp, 0.dp, 0.dp))
+        "zap", "zaps", "zapper", "zappers", "zapping", "zapped", "zapathon", "zapraiser", "zaplife", "zapchain" -> HashtagIcon(R.drawable.zap, "Zap", Color.Unspecified, Modifier.padding(1.dp, 3.dp, 0.dp, 0.dp))
+        "amethyst" -> HashtagIcon(R.drawable.amethyst, "Amethyst", Color.Unspecified, Modifier.padding(3.dp, 2.dp, 0.dp, 0.dp))
+        "onyx" -> HashtagIcon(R.drawable.black_heart, "Onyx", Color.Unspecified, Modifier.padding(1.dp, 3.dp, 0.dp, 0.dp))
+        "cashu", "ecash", "nut", "nuts", "deeznuts" -> HashtagIcon(R.drawable.cashu, "Cashu", Color.Unspecified, Modifier.padding(1.dp, 3.dp, 0.dp, 0.dp))
+        "plebs", "pleb", "plebchain" -> HashtagIcon(R.drawable.plebs, "Pleb", Color.Unspecified, Modifier.padding(2.dp, 2.dp, 0.dp, 1.dp))
+        "coffee", "coffeechain", "cafe" -> HashtagIcon(R.drawable.coffee, "Coffee", Color.Unspecified, Modifier.padding(2.dp, 2.dp, 0.dp, 0.dp))
+        "skullofsatoshi" -> HashtagIcon(R.drawable.skull, "SkullofSatoshi", Color.Unspecified, Modifier.padding(2.dp, 1.dp, 0.dp, 0.dp))
+        "grownostr", "gardening", "garden" -> HashtagIcon(R.drawable.grownostr, "GrowNostr", Color.Unspecified, Modifier.padding(0.dp, 1.dp, 0.dp, 1.dp))
+        "footstr" -> HashtagIcon(R.drawable.footstr, "Footstr", Color.Unspecified, Modifier.padding(1.dp, 1.dp, 0.dp, 0.dp))
+        "tunestr", "music", "nowplaying" -> HashtagIcon(R.drawable.tunestr, "Tunestr", primary, Modifier.padding(0.dp, 3.dp, 0.dp, 1.dp))
+        "weed", "weedstr", "420", "cannabis", "marijuana" -> HashtagIcon(R.drawable.weed, "Weed", Color.Unspecified, Modifier.padding(0.dp, 0.dp, 0.dp, 0.dp))
+        else -> null
+    }
+}
+
+@Immutable
+class HashtagIcon(
+    val icon: Int,
+    val description: String,
+    val color: Color,
+    val modifier: Modifier
+)

app/src/main/java/com/vitorpamplona/amethyst/model/Hex.kt

@@ -1,36 +0,0 @@
-package com.vitorpamplona.amethyst.model
-
-import com.vitorpamplona.amethyst.ui.note.toDisplayHex
-import fr.acinq.secp256k1.Hex
-import java.util.regex.Pattern
-import nostr.postr.Persona
-import nostr.postr.bechToBytes
-import nostr.postr.toHex
-
-/** Makes the distinction between String and Hex **/
-typealias HexKey = String
-
-fun ByteArray.toHexKey(): HexKey {
-  return toHex()
-}
-
-fun HexKey.toByteArray(): ByteArray {
-  return Hex.decode(this)
-}
-
-fun HexKey.toDisplayHexKey(): String {
-  return this.toDisplayHex()
-}
-
-fun decodePublicKey(key: String): ByteArray {
-  val pattern = Pattern.compile(".+@.+\\.[a-z]+")
-
-  return if (key.startsWith("nsec")) {
-    Persona(privKey = key.bechToBytes()).pubKey
-  } else if (key.startsWith("npub")) {
-    key.bechToBytes()
-  } else { //if (pattern.matcher(key).matches()) {
-  //} else {
-    Hex.decode(key)
-  }
-}

app/src/main/java/com/vitorpamplona/amethyst/model/Nip47URI.kt

@@ -0,0 +1,5 @@
+package com.vitorpamplona.amethyst.model
+
+import com.vitorpamplona.quartz.encoders.HexKey
+
+data class Nip47URI(val pubKeyHex: HexKey, val relayUri: String?, val secret: HexKey?)

app/src/main/java/com/vitorpamplona/amethyst/model/ParticipantListBuilder.kt

@@ -0,0 +1,77 @@
+package com.vitorpamplona.amethyst.model
+
+import com.vitorpamplona.quartz.encoders.HexKey
+
+class ParticipantListBuilder {
+    private fun addFollowsThatDirectlyParticipateOnToSet(baseNote: Note, followingSet: Set<HexKey>?, set: MutableSet<User>) {
+        baseNote.author?.let { author ->
+            if (author !in set && (followingSet == null || author.pubkeyHex in followingSet)) set.add(author)
+        }
+
+        // Breaks these searchers down to avoid the memory use of creating multiple lists
+        baseNote.replies.forEach { reply ->
+            reply.author?.let { author ->
+                if (author !in set && (followingSet == null || author.pubkeyHex in followingSet)) set.add(author)
+            }
+        }
+
+        baseNote.boosts.forEach { boost ->
+            boost.author?.let { author ->
+                if (author !in set && (followingSet == null || author.pubkeyHex in followingSet)) set.add(author)
+            }
+        }
+
+        baseNote.zaps.forEach { zapPair ->
+            zapPair.key.author?.let { author ->
+                if (author !in set && (followingSet == null || author.pubkeyHex in followingSet)) set.add(author)
+            }
+        }
+
+        baseNote.reactions.forEach { reactionSet ->
+            reactionSet.value.forEach { reaction ->
+                reaction.author?.let { author ->
+                    if (author !in set && (followingSet == null || author.pubkeyHex in followingSet)) set.add(author)
+                }
+            }
+        }
+    }
+
+    fun followsThatParticipateOnDirect(baseNote: Note?, followingSet: Set<HexKey>?): Set<User> {
+        if (baseNote == null) return mutableSetOf()
+
+        val set = mutableSetOf<User>()
+        addFollowsThatDirectlyParticipateOnToSet(baseNote, followingSet, set)
+        return set
+    }
+
+    fun followsThatParticipateOn(baseNote: Note?, followingSet: Set<HexKey>?): Set<User> {
+        if (baseNote == null) return mutableSetOf()
+
+        val mySet = mutableSetOf<User>()
+        addFollowsThatDirectlyParticipateOnToSet(baseNote, followingSet, mySet)
+
+        baseNote.replies.forEach {
+            addFollowsThatDirectlyParticipateOnToSet(it, followingSet, mySet)
+        }
+
+        baseNote.boosts.forEach {
+            it.replyTo?.forEach {
+                addFollowsThatDirectlyParticipateOnToSet(it, followingSet, mySet)
+            }
+        }
+
+        LocalCache.getChannelIfExists(baseNote.idHex)?.notes?.values?.forEach {
+            addFollowsThatDirectlyParticipateOnToSet(it, followingSet, mySet)
+        }
+
+        return mySet
+    }
+
+    fun countFollowsThatParticipateOn(baseNote: Note?, followingSet: Set<HexKey>?): Int {
+        if (baseNote == null) return 0
+
+        val list = followsThatParticipateOn(baseNote, followingSet)
+
+        return list.size
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/model/RelayInformation.kt

@@ -0,0 +1,60 @@
+package com.vitorpamplona.amethyst.model
+
+import androidx.compose.runtime.Stable
+import com.fasterxml.jackson.databind.DeserializationFeature
+import com.fasterxml.jackson.module.kotlin.jacksonObjectMapper
+
+@Stable
+class RelayInformation(
+    val id: String?,
+    val name: String?,
+    val description: String?,
+    val pubkey: String?,
+    val contact: String?,
+    val supported_nips: List<Int>?,
+    val supported_nip_extensions: List<String>?,
+    val software: String?,
+    val version: String?,
+    val limitation: RelayInformationLimitation?,
+    val relay_countries: List<String>?,
+    val language_tags: List<String>?,
+    val tags: List<String>?,
+    val posting_policy: String?,
+    val payments_url: String?,
+    val fees: RelayInformationFees?
+) {
+    companion object {
+        val mapper = jacksonObjectMapper().configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false)
+
+        fun fromJson(json: String): RelayInformation = mapper.readValue(json, RelayInformation::class.java)
+    }
+}
+
+@Stable
+class RelayInformationFee(
+    val amount: Int?,
+    val unit: String?,
+    val period: Int?,
+    val kinds: List<Int>?
+)
+
+class RelayInformationFees(
+    val admission: List<RelayInformationFee>?,
+    val subscription: List<RelayInformationFee>?,
+    val publication: List<RelayInformationFee>?,
+    val retention: List<RelayInformationFee>?
+)
+
+class RelayInformationLimitation(
+    val max_message_length: Int?,
+    val max_subscriptions: Int?,
+    val max_filters: Int?,
+    val max_limit: Int?,
+    val max_subid_length: Int?,
+    val min_prefix: Int?,
+    val max_event_tags: Int?,
+    val max_content_length: Int?,
+    val min_pow_difficulty: Int?,
+    val auth_required: Boolean?,
+    val payment_required: Boolean?
+)

app/src/main/java/com/vitorpamplona/amethyst/model/RelaySetupInfo.kt

@@ -0,0 +1,19 @@
+package com.vitorpamplona.amethyst.model
+
+import androidx.compose.runtime.Immutable
+import com.vitorpamplona.amethyst.service.relays.FeedType
+
+@Immutable
+data class RelaySetupInfo(
+    val url: String,
+    val read: Boolean,
+    val write: Boolean,
+    val errorCount: Int = 0,
+    val downloadCountInBytes: Int = 0,
+    val uploadCountInBytes: Int = 0,
+    val spamCount: Int = 0,
+    val feedTypes: Set<FeedType>,
+    val paidRelay: Boolean = false
+) {
+    val briefInfo: RelayBriefInfo = RelayBriefInfo(url)
+}

app/src/main/java/com/vitorpamplona/amethyst/model/ServersAvailable.kt

@@ -0,0 +1,16 @@
+package com.vitorpamplona.amethyst.model
+
+enum class ServersAvailable {
+    // IMGUR,
+    NOSTR_BUILD,
+    NOSTRIMG,
+    NOSTRFILES_DEV,
+    NOSTRCHECK_ME,
+
+    // IMGUR_NIP_94,
+    NOSTRIMG_NIP_94,
+    NOSTR_BUILD_NIP_94,
+    NOSTRFILES_DEV_NIP_94,
+    NOSTRCHECK_ME_NIP_94,
+    NIP95
+}

app/src/main/java/com/vitorpamplona/amethyst/model/Settings.kt

@@ -0,0 +1,87 @@
+package com.vitorpamplona.amethyst.model
+
+import androidx.compose.runtime.Stable
+import com.vitorpamplona.amethyst.R
+
+@Stable
+data class Settings(
+    val theme: ThemeType = ThemeType.SYSTEM,
+    val preferredLanguage: String? = null,
+    val automaticallyShowImages: ConnectivityType = ConnectivityType.ALWAYS,
+    val automaticallyStartPlayback: ConnectivityType = ConnectivityType.ALWAYS,
+    val automaticallyShowUrlPreview: ConnectivityType = ConnectivityType.ALWAYS,
+    val automaticallyHideNavigationBars: BooleanType = BooleanType.ALWAYS,
+    val automaticallyShowProfilePictures: ConnectivityType = ConnectivityType.ALWAYS,
+    val dontShowPushNotificationSelector: Boolean = false,
+    val dontAskForNotificationPermissions: Boolean = false
+)
+
+enum class ThemeType(val screenCode: Int, val resourceId: Int) {
+    SYSTEM(0, R.string.system),
+    LIGHT(1, R.string.light),
+    DARK(2, R.string.dark)
+}
+
+fun parseThemeType(code: Int?): ThemeType {
+    return when (code) {
+        ThemeType.SYSTEM.screenCode -> ThemeType.SYSTEM
+        ThemeType.LIGHT.screenCode -> ThemeType.LIGHT
+        ThemeType.DARK.screenCode -> ThemeType.DARK
+        else -> {
+            ThemeType.SYSTEM
+        }
+    }
+}
+
+enum class ConnectivityType(val prefCode: Boolean?, val screenCode: Int, val resourceId: Int) {
+    ALWAYS(null, 0, R.string.connectivity_type_always),
+    WIFI_ONLY(true, 1, R.string.connectivity_type_wifi_only),
+    NEVER(false, 2, R.string.connectivity_type_never)
+}
+
+fun parseConnectivityType(code: Boolean?): ConnectivityType {
+    return when (code) {
+        ConnectivityType.ALWAYS.prefCode -> ConnectivityType.ALWAYS
+        ConnectivityType.WIFI_ONLY.prefCode -> ConnectivityType.WIFI_ONLY
+        ConnectivityType.NEVER.prefCode -> ConnectivityType.NEVER
+        else -> {
+            ConnectivityType.ALWAYS
+        }
+    }
+}
+
+fun parseConnectivityType(screenCode: Int): ConnectivityType {
+    return when (screenCode) {
+        ConnectivityType.ALWAYS.screenCode -> ConnectivityType.ALWAYS
+        ConnectivityType.WIFI_ONLY.screenCode -> ConnectivityType.WIFI_ONLY
+        ConnectivityType.NEVER.screenCode -> ConnectivityType.NEVER
+        else -> {
+            ConnectivityType.ALWAYS
+        }
+    }
+}
+
+enum class BooleanType(val prefCode: Boolean?, val screenCode: Int, val reourceId: Int) {
+    ALWAYS(null, 0, R.string.connectivity_type_always),
+    NEVER(false, 1, R.string.connectivity_type_never)
+}
+
+fun parseBooleanType(code: Boolean?): BooleanType {
+    return when (code) {
+        BooleanType.ALWAYS.prefCode -> BooleanType.ALWAYS
+        BooleanType.NEVER.prefCode -> BooleanType.NEVER
+        else -> {
+            BooleanType.ALWAYS
+        }
+    }
+}
+
+fun parseBooleanType(screenCode: Int): BooleanType {
+    return when (screenCode) {
+        BooleanType.ALWAYS.screenCode -> BooleanType.ALWAYS
+        BooleanType.NEVER.screenCode -> BooleanType.NEVER
+        else -> {
+            BooleanType.ALWAYS
+        }
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/model/ThreadAssembler.kt

@@ -0,0 +1,82 @@
+package com.vitorpamplona.amethyst.model
+
+import com.vitorpamplona.amethyst.service.checkNotInMainThread
+import com.vitorpamplona.quartz.events.GenericRepostEvent
+import com.vitorpamplona.quartz.events.RepostEvent
+import kotlin.time.measureTimedValue
+
+class ThreadAssembler {
+
+    private fun searchRoot(note: Note, testedNotes: MutableSet<Note> = mutableSetOf()): Note? {
+        if (note.replyTo == null || note.replyTo?.isEmpty() == true) return note
+
+        if (note.event is RepostEvent || note.event is GenericRepostEvent) return note
+
+        testedNotes.add(note)
+
+        val markedAsRoot = note.event?.tags()?.firstOrNull { it[0] == "e" && it.size > 3 && it[3] == "root" }?.getOrNull(1)
+        if (markedAsRoot != null) {
+            // Check to ssee if there is an error in the tag and the root has replies
+            if (LocalCache.getNoteIfExists(markedAsRoot)?.replyTo?.isEmpty() == true) {
+                return LocalCache.checkGetOrCreateNote(markedAsRoot)
+            }
+        }
+
+        val hasNoReplyTo = note.replyTo?.reversed()?.firstOrNull { it.replyTo?.isEmpty() == true }
+        if (hasNoReplyTo != null) return hasNoReplyTo
+
+        // recursive
+        val roots = note.replyTo?.map {
+            if (it !in testedNotes) {
+                searchRoot(it, testedNotes)
+            } else {
+                null
+            }
+        }?.filterNotNull()
+
+        if (roots != null && roots.isNotEmpty()) {
+            return roots[0]
+        }
+
+        return null
+    }
+
+    fun findThreadFor(noteId: String): Set<Note> {
+        checkNotInMainThread()
+
+        val (result, elapsed) = measureTimedValue {
+            val note = LocalCache.checkGetOrCreateNote(noteId) ?: return emptySet<Note>()
+
+            if (note.event != null) {
+                val thread = mutableSetOf<Note>()
+
+                val threadRoot = searchRoot(note, thread) ?: note
+
+                loadDown(threadRoot, thread)
+                // adds the replies of the note in case the search for Root
+                // did not added them.
+                note.replies.forEach {
+                    loadDown(it, thread)
+                }
+
+                thread.toSet()
+            } else {
+                setOf(note)
+            }
+        }
+
+        println("Model Refresh: Thread loaded in $elapsed")
+
+        return result
+    }
+
+    fun loadDown(note: Note, thread: MutableSet<Note>) {
+        if (note !in thread) {
+            thread.add(note)
+
+            note.replies.forEach {
+                loadDown(it, thread)
+            }
+        }
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/model/UrlCachedPreviewer.kt

@@ -0,0 +1,60 @@
+package com.vitorpamplona.amethyst.model
+
+import android.util.LruCache
+import androidx.compose.runtime.Stable
+import com.vitorpamplona.amethyst.service.previews.BahaUrlPreview
+import com.vitorpamplona.amethyst.service.previews.IUrlPreviewCallback
+import com.vitorpamplona.amethyst.service.previews.UrlInfoItem
+import com.vitorpamplona.amethyst.ui.components.UrlPreviewState
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
+
+@Stable
+object UrlCachedPreviewer {
+    var cache = LruCache<String, UrlPreviewState>(100)
+        private set
+
+    suspend fun previewInfo(
+        url: String,
+        onReady: suspend (UrlPreviewState) -> Unit
+    ) = withContext(Dispatchers.IO) {
+        cache[url]?.let {
+            onReady(it)
+            return@withContext
+        }
+
+        BahaUrlPreview(
+            url,
+            object : IUrlPreviewCallback {
+                override suspend fun onComplete(urlInfo: UrlInfoItem) = withContext(Dispatchers.IO) {
+                    cache[url]?.let {
+                        if (it is UrlPreviewState.Loaded || it is UrlPreviewState.Empty) {
+                            onReady(it)
+                            return@withContext
+                        }
+                    }
+
+                    val state = if (urlInfo.allFetchComplete() && urlInfo.url == url) {
+                        UrlPreviewState.Loaded(urlInfo)
+                    } else {
+                        UrlPreviewState.Empty
+                    }
+
+                    cache.put(url, state)
+                    onReady(state)
+                }
+
+                override suspend fun onFailed(throwable: Throwable) = withContext(Dispatchers.IO) {
+                    cache[url]?.let {
+                        onReady(it)
+                        return@withContext
+                    }
+
+                    val state = UrlPreviewState.Error(throwable.message ?: "Error Loading url preview")
+                    cache.put(url, state)
+                    onReady(state)
+                }
+            }
+        ).fetchUrlPreview()
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/model/User.kt

@@ -1,98 +1,507 @@
 package com.vitorpamplona.amethyst.model
 
+import androidx.compose.runtime.Immutable
+import androidx.compose.runtime.Stable
 import androidx.lifecycle.LiveData
+import androidx.lifecycle.MediatorLiveData
+import androidx.lifecycle.distinctUntilChanged
 import com.vitorpamplona.amethyst.service.NostrSingleUserDataSource
-import com.vitorpamplona.amethyst.ui.note.toDisplayHex
-import java.util.Collections
+import com.vitorpamplona.amethyst.service.checkNotInMainThread
+import com.vitorpamplona.amethyst.service.relays.EOSETime
+import com.vitorpamplona.amethyst.service.relays.Relay
+import com.vitorpamplona.amethyst.ui.components.BundledUpdate
+import com.vitorpamplona.amethyst.ui.note.toShortenHex
+import com.vitorpamplona.quartz.encoders.Hex
+import com.vitorpamplona.quartz.encoders.HexKey
+import com.vitorpamplona.quartz.encoders.Lud06
+import com.vitorpamplona.quartz.encoders.toNpub
+import com.vitorpamplona.quartz.events.BookmarkListEvent
+import com.vitorpamplona.quartz.events.ChatroomKey
+import com.vitorpamplona.quartz.events.ContactListEvent
+import com.vitorpamplona.quartz.events.LnZapEvent
+import com.vitorpamplona.quartz.events.MetadataEvent
+import com.vitorpamplona.quartz.events.ReportEvent
+import com.vitorpamplona.quartz.events.UserMetadata
+import com.vitorpamplona.quartz.events.toImmutableListOfLists
+import kotlinx.collections.immutable.persistentSetOf
+import kotlinx.coroutines.Dispatchers
+import java.math.BigDecimal
 
-class User(val pubkey: ByteArray) {
-    val pubkeyHex = pubkey.toHexKey()
-    val pubkeyDisplayHex = pubkey.toDisplayHex()
+@Stable
+class User(val pubkeyHex: String) {
+    var info: UserMetadata? = null
 
-    var info = UserMetadata()
+    var latestContactList: ContactListEvent? = null
+    var latestBookmarkList: BookmarkListEvent? = null
 
-    var updatedMetadataAt: Long = 0;
-    var updatedFollowsAt: Long = 0;
+    var reports = mapOf<User, Set<Note>>()
+        private set
 
-    val notes = Collections.synchronizedSet(mutableSetOf<Note>())
-    val follows = Collections.synchronizedSet(mutableSetOf<User>())
-    val taggedPosts = Collections.synchronizedSet(mutableSetOf<Note>())
+    var latestEOSEs: Map<String, EOSETime> = emptyMap()
 
-    var follower: Number? = null
+    var zaps = mapOf<Note, Note?>()
+        private set
+
+    var relaysBeingUsed = mapOf<String, RelayInfo>()
+        private set
+
+    var privateChatrooms = mapOf<ChatroomKey, Chatroom>()
+        private set
+
+    fun pubkey() = Hex.decode(pubkeyHex)
+    fun pubkeyNpub() = pubkey().toNpub()
+
+    fun pubkeyDisplayHex() = pubkeyNpub().toShortenHex()
+
+    fun toNostrUri() = "nostr:${pubkeyNpub()}"
+
+    override fun toString(): String = pubkeyHex
+
+    fun toBestShortFirstName(): String {
+        val fullName = bestDisplayName() ?: bestUsername() ?: return pubkeyDisplayHex()
+
+        val names = fullName.split(' ')
+
+        val firstName = if (names[0].length <= 3) {
+            // too short. Remove Dr.
+            "${names[0]} ${names.getOrNull(1) ?: ""}"
+        } else {
+            names[0]
+        }
+
+        return firstName
+    }
 
     fun toBestDisplayName(): String {
-        return bestDisplayName() ?: bestUsername() ?: pubkeyDisplayHex
+        return bestDisplayName() ?: bestUsername() ?: pubkeyDisplayHex()
     }
 
     fun bestUsername(): String? {
-        return info.name?.ifBlank { null } ?: info.username?.ifBlank { null }
+        return info?.name?.ifBlank { null } ?: info?.username?.ifBlank { null }
     }
 
     fun bestDisplayName(): String? {
-        return info.displayName?.ifBlank { null } ?: info.display_name?.ifBlank { null }
+        return info?.displayName?.ifBlank { null } ?: info?.display_name?.ifBlank { null }
     }
 
-    fun profilePicture(): String {
-        if (info.picture.isNullOrBlank()) info.picture = null
-        return info.picture ?: "https://robohash.org/${pubkeyHex}.png"
+    fun nip05(): String? {
+        return info?.nip05?.ifBlank { null }
     }
 
-    fun updateFollows(newFollows: List<User>, updateAt: Long) {
-        follows.clear()
-        follows.addAll(newFollows)
-        updatedFollowsAt = updateAt
-
-        live.refresh()
+    fun profilePicture(): String? {
+        if (info?.picture.isNullOrBlank()) info?.picture = null
+        return info?.picture
     }
 
-    fun updateUserInfo(newUserInfo: UserMetadata, updateAt: Long) {
+    fun updateBookmark(event: BookmarkListEvent) {
+        if (event.id == latestBookmarkList?.id) return
+
+        latestBookmarkList = event
+        liveSet?.innerBookmarks?.invalidateData()
+    }
+
+    fun clearEOSE() {
+        latestEOSEs = emptyMap()
+    }
+
+    fun updateContactList(event: ContactListEvent) {
+        if (event.id == latestContactList?.id) return
+
+        val oldContactListEvent = latestContactList
+        latestContactList = event
+
+        // Update following of the current user
+        liveSet?.innerFollows?.invalidateData()
+
+        // Update Followers of the past user list
+        // Update Followers of the new contact list
+        (oldContactListEvent)?.unverifiedFollowKeySet()?.forEach {
+            LocalCache.users[it]?.liveSet?.innerFollowers?.invalidateData()
+        }
+        (latestContactList)?.unverifiedFollowKeySet()?.forEach {
+            LocalCache.users[it]?.liveSet?.innerFollowers?.invalidateData()
+        }
+
+        liveSet?.innerRelays?.invalidateData()
+    }
+
+    fun addReport(note: Note) {
+        val author = note.author ?: return
+
+        if (author !in reports.keys) {
+            reports = reports + Pair(author, setOf(note))
+            liveSet?.innerReports?.invalidateData()
+        } else if (reports[author]?.contains(note) == false) {
+            reports = reports + Pair(author, (reports[author] ?: emptySet()) + note)
+            liveSet?.innerReports?.invalidateData()
+        }
+    }
+
+    fun removeReport(deleteNote: Note) {
+        val author = deleteNote.author ?: return
+
+        if (author in reports.keys && reports[author]?.contains(deleteNote) == true) {
+            reports[author]?.let {
+                reports = reports + Pair(author, it.minus(deleteNote))
+                liveSet?.innerReports?.invalidateData()
+            }
+        }
+    }
+
+    fun addZap(zapRequest: Note, zap: Note?) {
+        if (zapRequest !in zaps.keys) {
+            zaps = zaps + Pair(zapRequest, zap)
+            liveSet?.innerZaps?.invalidateData()
+        } else if (zapRequest in zaps.keys && zaps[zapRequest] == null) {
+            zaps = zaps + Pair(zapRequest, zap)
+            liveSet?.innerZaps?.invalidateData()
+        }
+    }
+
+    fun removeZap(zapRequestOrZapEvent: Note) {
+        if (zapRequestOrZapEvent in zaps.keys) {
+            zaps = zaps.minus(zapRequestOrZapEvent)
+            liveSet?.innerZaps?.invalidateData()
+        } else if (zapRequestOrZapEvent in zaps.values) {
+            zaps = zaps.filter { it.value != zapRequestOrZapEvent }
+            liveSet?.innerZaps?.invalidateData()
+        }
+    }
+
+    fun zappedAmount(): BigDecimal {
+        return zaps.mapNotNull { it.value?.event }
+            .filterIsInstance<LnZapEvent>()
+            .mapNotNull {
+                it.amount
+            }.sumOf { it }
+    }
+
+    fun reportsBy(user: User): Set<Note> {
+        return reports[user] ?: emptySet()
+    }
+
+    fun reportAuthorsBy(users: Set<HexKey>): List<User> {
+        return reports.keys.filter { it.pubkeyHex in users }
+    }
+
+    fun countReportAuthorsBy(users: Set<HexKey>): Int {
+        return reports.keys.count { it.pubkeyHex in users }
+    }
+
+    fun reportsBy(users: Set<HexKey>): List<Note> {
+        return reportAuthorsBy(users).mapNotNull {
+            reports[it]
+        }.flatten()
+    }
+
+    @Synchronized
+    private fun getOrCreatePrivateChatroomSync(key: ChatroomKey): Chatroom {
+        checkNotInMainThread()
+
+        return privateChatrooms[key] ?: run {
+            val privateChatroom = Chatroom()
+            privateChatrooms = privateChatrooms + Pair(key, privateChatroom)
+            privateChatroom
+        }
+    }
+
+    private fun getOrCreatePrivateChatroom(user: User): Chatroom {
+        val key = ChatroomKey(persistentSetOf(user.pubkeyHex))
+        return getOrCreatePrivateChatroom(key)
+    }
+
+    private fun getOrCreatePrivateChatroom(key: ChatroomKey): Chatroom {
+        return privateChatrooms[key] ?: getOrCreatePrivateChatroomSync(key)
+    }
+
+    fun addMessage(room: ChatroomKey, msg: Note) {
+        val privateChatroom = getOrCreatePrivateChatroom(room)
+        if (msg !in privateChatroom.roomMessages) {
+            privateChatroom.addMessageSync(msg)
+            liveSet?.innerMessages?.invalidateData()
+        }
+    }
+
+    fun addMessage(user: User, msg: Note) {
+        val privateChatroom = getOrCreatePrivateChatroom(user)
+        if (msg !in privateChatroom.roomMessages) {
+            privateChatroom.addMessageSync(msg)
+            liveSet?.innerMessages?.invalidateData()
+        }
+    }
+
+    fun createChatroom(withKey: ChatroomKey) {
+        getOrCreatePrivateChatroom(withKey)
+    }
+
+    fun removeMessage(user: User, msg: Note) {
+        checkNotInMainThread()
+
+        val privateChatroom = getOrCreatePrivateChatroom(user)
+        if (msg in privateChatroom.roomMessages) {
+            privateChatroom.removeMessageSync(msg)
+            liveSet?.innerMessages?.invalidateData()
+        }
+    }
+
+    fun addRelayBeingUsed(relay: Relay, eventTime: Long) {
+        val here = relaysBeingUsed[relay.url]
+        if (here == null) {
+            relaysBeingUsed = relaysBeingUsed + Pair(relay.url, RelayInfo(relay.url, eventTime, 1))
+        } else {
+            if (eventTime > here.lastEvent) {
+                here.lastEvent = eventTime
+            }
+            here.counter++
+        }
+
+        liveSet?.innerRelayInfo?.invalidateData()
+    }
+
+    fun updateUserInfo(newUserInfo: UserMetadata, latestMetadata: MetadataEvent) {
         info = newUserInfo
-        updatedMetadataAt = updateAt
+        info?.latestMetadata = latestMetadata
+        info?.updatedMetadataAt = latestMetadata.createdAt
+        info?.tags = latestMetadata.tags.toImmutableListOfLists()
 
-        live.refresh()
+        if (newUserInfo.lud16.isNullOrBlank()) {
+            info?.lud06?.let {
+                if (it.lowercase().startsWith("lnurl")) {
+                    info?.lud16 = Lud06().toLud16(it)
+                }
+            }
+        }
+
+        liveSet?.innerMetadata?.invalidateData()
     }
 
-    // Observers line up here.
-    val live: UserLiveData = UserLiveData(this)
+    fun isFollowing(user: User): Boolean {
+        return latestContactList?.isTaggedUser(user.pubkeyHex) ?: false
+    }
 
-    private fun refreshObservers() {
-        live.refresh()
+    fun isFollowingHashtag(tag: String): Boolean {
+        return latestContactList?.isTaggedHash(tag) ?: false
+    }
+
+    fun isFollowingHashtagCached(tag: String): Boolean {
+        return latestContactList?.verifiedFollowTagSet?.let {
+            return tag.lowercase() in it
+        } ?: false
+    }
+
+    fun isFollowingGeohashCached(geoTag: String): Boolean {
+        return latestContactList?.verifiedFollowGeohashSet?.let {
+            return geoTag.lowercase() in it
+        } ?: false
+    }
+
+    fun isFollowingCached(user: User): Boolean {
+        return latestContactList?.verifiedFollowKeySet?.let {
+            return user.pubkeyHex in it
+        } ?: false
+    }
+
+    fun isFollowingCached(userHex: String): Boolean {
+        return latestContactList?.verifiedFollowKeySet?.let {
+            return userHex in it
+        } ?: false
+    }
+
+    fun transientFollowCount(): Int? {
+        return latestContactList?.unverifiedFollowKeySet()?.size
+    }
+
+    suspend fun transientFollowerCount(): Int {
+        return LocalCache.users.values.count { it.latestContactList?.isTaggedUser(pubkeyHex) ?: false }
+    }
+
+    fun cachedFollowingKeySet(): Set<HexKey> {
+        return latestContactList?.verifiedFollowKeySet ?: emptySet()
+    }
+
+    fun cachedFollowingTagSet(): Set<String> {
+        return latestContactList?.verifiedFollowTagSet ?: emptySet()
+    }
+
+    fun cachedFollowingGeohashSet(): Set<HexKey> {
+        return latestContactList?.verifiedFollowGeohashSet ?: emptySet()
+    }
+
+    fun cachedFollowingCommunitiesSet(): Set<HexKey> {
+        return latestContactList?.verifiedFollowCommunitySet ?: emptySet()
+    }
+
+    fun cachedFollowCount(): Int? {
+        return latestContactList?.verifiedFollowKeySet?.size
+    }
+
+    suspend fun cachedFollowerCount(): Int {
+        return LocalCache.users.values.count { it.latestContactList?.isTaggedUser(pubkeyHex) ?: false }
+    }
+
+    fun hasSentMessagesTo(key: ChatroomKey?): Boolean {
+        val messagesToUser = privateChatrooms[key] ?: return false
+
+        return messagesToUser.roomMessages.any { this.pubkeyHex == it.author?.pubkeyHex }
+    }
+
+    fun hasReport(loggedIn: User, type: ReportEvent.ReportType): Boolean {
+        return reports[loggedIn]?.firstOrNull() {
+            it.event is ReportEvent && (it.event as ReportEvent).reportedAuthor().any { it.reportType == type }
+        } != null
+    }
+
+    fun anyNameStartsWith(username: String): Boolean {
+        return info?.anyNameStartsWith(username) ?: false
+    }
+
+    var liveSet: UserLiveSet? = null
+
+    fun live(): UserLiveSet {
+        if (liveSet == null) {
+            createOrDestroyLiveSync(true)
+        }
+        return liveSet!!
+    }
+
+    fun clearLive() {
+        if (liveSet != null && liveSet?.isInUse() == false) {
+            createOrDestroyLiveSync(false)
+        }
+    }
+
+    @Synchronized
+    fun createOrDestroyLiveSync(create: Boolean) {
+        if (create) {
+            if (liveSet == null) {
+                liveSet = UserLiveSet(this)
+            }
+        } else {
+            if (liveSet != null && liveSet?.isInUse() == false) {
+                liveSet?.destroy()
+                liveSet = null
+            }
+        }
     }
 }
 
-class UserMetadata {
-    var name: String? = null
-    var username: String? = null
-    var display_name: String? = null
-    var displayName: String? = null
-    var picture: String? = null
-    var website: String? = null
-    var about: String? = null
-    var nip05: String? = null
-    var domain: String? = null
-    var lud06: String? = null
-    var lud16: String? = null
+@Stable
+class UserLiveSet(u: User) {
+    val innerMetadata = UserBundledRefresherLiveData(u)
 
-    var publish: String? = null
-    var iris: String? = null
-    var main_relay: String? = null
-    var twitter: String? = null
-}
+    // UI Observers line up here.
+    val innerFollows = UserBundledRefresherLiveData(u)
+    val innerFollowers = UserBundledRefresherLiveData(u)
+    val innerReports = UserBundledRefresherLiveData(u)
+    val innerMessages = UserBundledRefresherLiveData(u)
+    val innerRelays = UserBundledRefresherLiveData(u)
+    val innerRelayInfo = UserBundledRefresherLiveData(u)
+    val innerZaps = UserBundledRefresherLiveData(u)
+    val innerBookmarks = UserBundledRefresherLiveData(u)
+    val innerStatuses = UserBundledRefresherLiveData(u)
 
-class UserLiveData(val user: User): LiveData<UserState>(UserState(user)) {
-    fun refresh() {
-        postValue(UserState(user))
+    // UI Observers line up here.
+    val metadata = innerMetadata.map { it }
+    val follows = innerFollows.map { it }
+    val followers = innerFollowers.map { it }
+    val reports = innerReports.map { it }
+    val messages = innerMessages.map { it }
+    val relays = innerRelays.map { it }
+    val relayInfo = innerRelayInfo.map { it }
+    val zaps = innerZaps.map { it }
+    val bookmarks = innerBookmarks.map {
+        it
+    }
+    val statuses = innerStatuses.map { it }
+
+    val profilePictureChanges = innerMetadata.map {
+        it.user.profilePicture()
+    }.distinctUntilChanged()
+
+    val nip05Changes = innerMetadata.map {
+        it.user.nip05()
+    }.distinctUntilChanged()
+
+    val userMetadataInfo = innerMetadata.map {
+        it.user.info
+    }.distinctUntilChanged()
+
+    fun isInUse(): Boolean {
+        return metadata.hasObservers() ||
+            follows.hasObservers() ||
+            followers.hasObservers() ||
+            reports.hasObservers() ||
+            messages.hasObservers() ||
+            relays.hasObservers() ||
+            relayInfo.hasObservers() ||
+            zaps.hasObservers() ||
+            bookmarks.hasObservers() ||
+            statuses.hasObservers() ||
+            profilePictureChanges.hasObservers() ||
+            nip05Changes.hasObservers() ||
+            userMetadataInfo.hasObservers()
     }
 
+    fun destroy() {
+        innerMetadata.destroy()
+        innerFollows.destroy()
+        innerFollowers.destroy()
+        innerReports.destroy()
+        innerMessages.destroy()
+        innerRelays.destroy()
+        innerRelayInfo.destroy()
+        innerZaps.destroy()
+        innerBookmarks.destroy()
+        innerStatuses.destroy()
+    }
+}
+
+@Immutable
+data class RelayInfo(
+    val url: String,
+    var lastEvent: Long,
+    var counter: Long
+)
+
+class UserBundledRefresherLiveData(val user: User) : LiveData<UserState>(UserState(user)) {
+    // Refreshes observers in batches.
+    private val bundler = BundledUpdate(500, Dispatchers.IO)
+
+    fun destroy() {
+        bundler.cancel()
+    }
+
+    fun invalidateData() {
+        checkNotInMainThread()
+
+        bundler.invalidate() {
+            checkNotInMainThread()
+
+            postValue(UserState(user))
+        }
+    }
+
+    fun <Y> map(
+        transform: (UserState) -> Y
+    ): UserLoadingLiveData<Y> {
+        val initialValue = this.value?.let { transform(it) }
+        val result = UserLoadingLiveData(user, initialValue)
+        result.addSource(this) { x -> result.value = transform(x) }
+        return result
+    }
+}
+
+class UserLoadingLiveData<Y>(val user: User, initialValue: Y?) : MediatorLiveData<Y>(initialValue) {
     override fun onActive() {
         super.onActive()
-        NostrSingleUserDataSource.add(user.pubkeyHex)
+        NostrSingleUserDataSource.add(user)
     }
 
     override fun onInactive() {
         super.onInactive()
-        NostrSingleUserDataSource.remove(user.pubkeyHex)
+        NostrSingleUserDataSource.remove(user)
     }
 }
 
+@Immutable
 class UserState(val user: User)

app/src/main/java/com/vitorpamplona/amethyst/service/BlurHashDecoder.kt

@@ -0,0 +1,205 @@
+package com.vitorpamplona.amethyst.service
+
+import android.graphics.Bitmap
+import android.graphics.Color
+import kotlin.math.cos
+import kotlin.math.pow
+import kotlin.math.withSign
+
+object BlurHashDecoder {
+
+    // cache Math.cos() calculations to improve performance.
+    // The number of calculations can be huge for many bitmaps: width * height * numCompX * numCompY * 2 * nBitmaps
+    // the cache is enabled by default, it is recommended to disable it only when just a few images are displayed
+    private val cacheCosinesX = HashMap<Int, DoubleArray>()
+    private val cacheCosinesY = HashMap<Int, DoubleArray>()
+
+    /**
+     * Clear calculations stored in memory cache.
+     * The cache is not big, but will increase when many image sizes are used,
+     * if the app needs memory it is recommended to clear it.
+     */
+    fun clearCache() {
+        cacheCosinesX.clear()
+        cacheCosinesY.clear()
+    }
+
+    /**
+     * Returns width/height
+     */
+    fun aspectRatio(blurHash: String?): Float? {
+        if (blurHash == null || blurHash.length < 6) {
+            return null
+        }
+        val numCompEnc = decode83(blurHash, 0, 1)
+        val numCompX = (numCompEnc % 9) + 1
+        val numCompY = (numCompEnc / 9) + 1
+        if (blurHash.length != 4 + 2 * numCompX * numCompY) {
+            return null
+        }
+
+        return numCompX.toFloat() / numCompY.toFloat()
+    }
+
+    /**
+     * Decode a blur hash into a new bitmap.
+     *
+     * @param useCache use in memory cache for the calculated math, reused by images with same size.
+     *                 if the cache does not exist yet it will be created and populated with new calculations.
+     *                 By default it is true.
+     */
+    fun decode(blurHash: String?, width: Int, height: Int, punch: Float = 1f, useCache: Boolean = true): Bitmap? {
+        checkNotInMainThread()
+
+        if (blurHash == null || blurHash.length < 6) {
+            return null
+        }
+        val numCompEnc = decode83(blurHash, 0, 1)
+        val numCompX = (numCompEnc % 9) + 1
+        val numCompY = (numCompEnc / 9) + 1
+        if (blurHash.length != 4 + 2 * numCompX * numCompY) {
+            return null
+        }
+        val maxAcEnc = decode83(blurHash, 1, 2)
+        val maxAc = (maxAcEnc + 1) / 166f
+        val colors = Array(numCompX * numCompY) { i ->
+            if (i == 0) {
+                val colorEnc = decode83(blurHash, 2, 6)
+                decodeDc(colorEnc)
+            } else {
+                val from = 4 + i * 2
+                val colorEnc = decode83(blurHash, from, from + 2)
+                decodeAc(colorEnc, maxAc * punch)
+            }
+        }
+        return composeBitmap(width, height, numCompX, numCompY, colors, useCache)
+    }
+
+    private fun decode83(str: String, from: Int = 0, to: Int = str.length): Int {
+        var result = 0
+        for (i in from until to) {
+            val index = charMap[str[i]] ?: -1
+            if (index != -1) {
+                result = result * 83 + index
+            }
+        }
+        return result
+    }
+
+    private fun decodeDc(colorEnc: Int): FloatArray {
+        val r = colorEnc shr 16
+        val g = (colorEnc shr 8) and 255
+        val b = colorEnc and 255
+        return floatArrayOf(srgbToLinear(r), srgbToLinear(g), srgbToLinear(b))
+    }
+
+    private fun srgbToLinear(colorEnc: Int): Float {
+        val v = colorEnc / 255f
+        return if (v <= 0.04045f) {
+            (v / 12.92f)
+        } else {
+            ((v + 0.055f) / 1.055f).pow(2.4f)
+        }
+    }
+
+    private fun decodeAc(value: Int, maxAc: Float): FloatArray {
+        val r = value / (19 * 19)
+        val g = (value / 19) % 19
+        val b = value % 19
+        return floatArrayOf(
+            signedPow2((r - 9) / 9.0f) * maxAc,
+            signedPow2((g - 9) / 9.0f) * maxAc,
+            signedPow2((b - 9) / 9.0f) * maxAc
+        )
+    }
+
+    private fun signedPow2(value: Float) = value.pow(2f).withSign(value)
+
+    private fun composeBitmap(
+        width: Int,
+        height: Int,
+        numCompX: Int,
+        numCompY: Int,
+        colors: Array<FloatArray>,
+        useCache: Boolean
+    ): Bitmap {
+        // use an array for better performance when writing pixel colors
+        val imageArray = IntArray(width * height)
+        val calculateCosX = !useCache || !cacheCosinesX.containsKey(width * numCompX)
+        val cosinesX = getArrayForCosinesX(calculateCosX, width, numCompX)
+        val calculateCosY = !useCache || !cacheCosinesY.containsKey(height * numCompY)
+        val cosinesY = getArrayForCosinesY(calculateCosY, height, numCompY)
+        for (y in 0 until height) {
+            for (x in 0 until width) {
+                var r = 0f
+                var g = 0f
+                var b = 0f
+                for (j in 0 until numCompY) {
+                    for (i in 0 until numCompX) {
+                        val cosX = cosinesX.getCos(calculateCosX, i, numCompX, x, width)
+                        val cosY = cosinesY.getCos(calculateCosY, j, numCompY, y, height)
+                        val basis = (cosX * cosY).toFloat()
+                        val color = colors[j * numCompX + i]
+                        r += color[0] * basis
+                        g += color[1] * basis
+                        b += color[2] * basis
+                    }
+                }
+                imageArray[x + width * y] = Color.rgb(linearToSrgb(r), linearToSrgb(g), linearToSrgb(b))
+            }
+        }
+        return Bitmap.createBitmap(imageArray, width, height, Bitmap.Config.ARGB_8888)
+    }
+
+    private fun getArrayForCosinesY(calculate: Boolean, height: Int, numCompY: Int) = when {
+        calculate -> {
+            DoubleArray(height * numCompY).also {
+                cacheCosinesY[height * numCompY] = it
+            }
+        }
+        else -> {
+            cacheCosinesY[height * numCompY]!!
+        }
+    }
+
+    private fun getArrayForCosinesX(calculate: Boolean, width: Int, numCompX: Int) = when {
+        calculate -> {
+            DoubleArray(width * numCompX).also {
+                cacheCosinesX[width * numCompX] = it
+            }
+        }
+        else -> cacheCosinesX[width * numCompX]!!
+    }
+
+    private fun DoubleArray.getCos(
+        calculate: Boolean,
+        x: Int,
+        numComp: Int,
+        y: Int,
+        size: Int
+    ): Double {
+        if (calculate) {
+            this[x + numComp * y] = cos(Math.PI * y * x / size)
+        }
+        return this[x + numComp * y]
+    }
+
+    private fun linearToSrgb(value: Float): Int {
+        val v = value.coerceIn(0f, 1f)
+        return if (v <= 0.0031308f) {
+            (v * 12.92f * 255f + 0.5f).toInt()
+        } else {
+            ((1.055f * v.pow(1 / 2.4f) - 0.055f) * 255 + 0.5f).toInt()
+        }
+    }
+
+    private val charMap = listOf(
+        '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F', 'G',
+        'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X',
+        'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
+        'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '#', '$', '%', '*', '+', ',',
+        '-', '.', ':', ';', '=', '?', '@', '[', ']', '^', '_', '{', '|', '}', '~'
+    )
+        .mapIndexed { i, c -> c to i }
+        .toMap()
+}

app/src/main/java/com/vitorpamplona/amethyst/service/BlurHashImage.kt

@@ -0,0 +1,68 @@
+package com.vitorpamplona.amethyst.service
+
+import android.content.Context
+import android.net.Uri
+import androidx.compose.runtime.Stable
+import androidx.core.graphics.drawable.toDrawable
+import coil.ImageLoader
+import coil.decode.DataSource
+import coil.fetch.DrawableResult
+import coil.fetch.FetchResult
+import coil.fetch.Fetcher
+import coil.request.ImageRequest
+import coil.request.Options
+import java.net.URLDecoder
+import java.net.URLEncoder
+import kotlin.math.roundToInt
+
+@Stable
+class BlurHashFetcher(
+    private val options: Options,
+    private val data: Uri
+) : Fetcher {
+
+    override suspend fun fetch(): FetchResult {
+        checkNotInMainThread()
+
+        val encodedHash = data.toString().removePrefix("bluehash:")
+        val hash = URLDecoder.decode(encodedHash, "utf-8")
+
+        val aspectRatio = BlurHashDecoder.aspectRatio(hash) ?: 1.0f
+
+        val preferredWidth = 100
+
+        val bitmap = BlurHashDecoder.decode(
+            hash,
+            preferredWidth,
+            (preferredWidth * (1 / aspectRatio)).roundToInt()
+        )
+
+        if (bitmap == null) {
+            throw Exception("Unable to convert Bluehash $hash")
+        }
+
+        return DrawableResult(
+            drawable = bitmap.toDrawable(options.context.resources),
+            isSampled = false,
+            dataSource = DataSource.MEMORY
+        )
+    }
+
+    object Factory : Fetcher.Factory<Uri> {
+        override fun create(data: Uri, options: Options, imageLoader: ImageLoader): Fetcher {
+            return BlurHashFetcher(options, data)
+        }
+    }
+}
+
+object BlurHashRequester {
+    fun imageRequest(context: Context, message: String): ImageRequest {
+        val encodedMessage = URLEncoder.encode(message, "utf-8")
+
+        return ImageRequest
+            .Builder(context)
+            .data("bluehash:$encodedMessage")
+            .fetcherFactory(BlurHashFetcher.Factory)
+            .build()
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/service/CachedRichTextParser.kt

@@ -0,0 +1,297 @@
+package com.vitorpamplona.amethyst.service
+
+import android.util.Log
+import android.util.LruCache
+import android.util.Patterns
+import androidx.compose.runtime.Immutable
+import com.linkedin.urls.detection.UrlDetector
+import com.linkedin.urls.detection.UrlDetectorOptions
+import com.vitorpamplona.amethyst.ui.components.ZoomableUrlContent
+import com.vitorpamplona.amethyst.ui.components.ZoomableUrlImage
+import com.vitorpamplona.amethyst.ui.components.ZoomableUrlVideo
+import com.vitorpamplona.amethyst.ui.components.hashTagsPattern
+import com.vitorpamplona.amethyst.ui.components.imageExtensions
+import com.vitorpamplona.amethyst.ui.components.tagIndex
+import com.vitorpamplona.amethyst.ui.components.videoExtensions
+import com.vitorpamplona.quartz.events.ImmutableListOfLists
+import kotlinx.collections.immutable.ImmutableList
+import kotlinx.collections.immutable.ImmutableMap
+import kotlinx.collections.immutable.ImmutableSet
+import kotlinx.collections.immutable.persistentListOf
+import kotlinx.collections.immutable.toImmutableList
+import kotlinx.collections.immutable.toImmutableMap
+import kotlinx.collections.immutable.toImmutableSet
+import java.util.regex.Pattern
+
+@Immutable
+data class RichTextViewerState(
+    val urlSet: ImmutableSet<String>,
+    val imagesForPager: ImmutableMap<String, ZoomableUrlContent>,
+    val imageList: ImmutableList<ZoomableUrlContent>,
+    val customEmoji: ImmutableMap<String, String>,
+    val paragraphs: ImmutableList<ParagraphState>
+)
+
+data class ParagraphState(val words: ImmutableList<Segment>, val isRTL: Boolean)
+
+object CachedRichTextParser {
+    val richTextCache = LruCache<String, RichTextViewerState>(200)
+
+    fun parseText(content: String, tags: ImmutableListOfLists<String>): RichTextViewerState {
+        return if (richTextCache[content] != null) {
+            richTextCache[content]
+        } else {
+            val newUrls = RichTextParser().parseText(content, tags)
+            richTextCache.put(content, newUrls)
+            newUrls
+        }
+    }
+}
+
+// Group 1 = url, group 4 additional chars
+// val noProtocolUrlValidator = Pattern.compile("(([\\w\\d-]+\\.)*[a-zA-Z][\\w-]+[\\.\\:]\\w+([\\/\\?\\=\\&\\#\\.]?[\\w-]+)*\\/?)(.*)")
+
+// Android9 seems to have an issue starting this regex.
+val noProtocolUrlValidator = try {
+    Pattern.compile("(([\\w\\d-]+\\.)*[a-zA-Z][\\w-]+[\\.\\:]\\w+([\\/\\?\\=\\&\\#\\.]?[\\w-]+[^\\p{IsHan}\\p{IsHiragana}\\p{IsKatakana}])*\\/?)(.*)")
+} catch (e: Exception) {
+    Pattern.compile("(([\\w\\d-]+\\.)*[a-zA-Z][\\w-]+[\\.\\:]\\w+([\\/\\?\\=\\&\\#\\.]?[\\w-]+)*\\/?)(.*)")
+}
+
+val HTTPRegex = "^((http|https)://)?([A-Za-z0-9-_]+(\\.[A-Za-z0-9-_]+)+)(:[0-9]+)?(/[^?#]*)?(\\?[^#]*)?(#.*)?".toRegex(RegexOption.IGNORE_CASE)
+
+class RichTextParser() {
+    fun parseText(
+        content: String,
+        tags: ImmutableListOfLists<String>
+    ): RichTextViewerState {
+        val urls = UrlDetector(content, UrlDetectorOptions.Default).detect()
+
+        val urlSet = urls.mapNotNullTo(LinkedHashSet(urls.size)) {
+            // removes e-mails
+            if (Patterns.EMAIL_ADDRESS.matcher(it.originalUrl).matches()) {
+                null
+            } else if (isNumber(it.originalUrl)) {
+                null
+            } else if (it.originalUrl.contains("。")) {
+                null
+            } else {
+                if (HTTPRegex.matches(it.originalUrl)) {
+                    it.originalUrl
+                } else {
+                    null
+                }
+            }
+        }
+
+        val imagesForPager = urlSet.mapNotNull { fullUrl ->
+            val removedParamsFromUrl = fullUrl.split("?")[0].lowercase()
+            if (imageExtensions.any { removedParamsFromUrl.endsWith(it) }) {
+                ZoomableUrlImage(fullUrl)
+            } else if (videoExtensions.any { removedParamsFromUrl.endsWith(it) }) {
+                ZoomableUrlVideo(fullUrl)
+            } else {
+                null
+            }
+        }.associateBy { it.url }
+        val imageList = imagesForPager.values.toList()
+
+        val emojiMap =
+            tags.lists.filter { it.size > 2 && it[0] == "emoji" }.associate { ":${it[1]}:" to it[2] }
+
+        val segments = findTextSegments(content, imagesForPager.keys, urlSet, emojiMap, tags)
+
+        return RichTextViewerState(
+            urlSet.toImmutableSet(),
+            imagesForPager.toImmutableMap(),
+            imageList.toImmutableList(),
+            emojiMap.toImmutableMap(),
+            segments
+        )
+    }
+
+    private fun findTextSegments(content: String, images: Set<String>, urls: Set<String>, emojis: Map<String, String>, tags: ImmutableListOfLists<String>): ImmutableList<ParagraphState> {
+        var paragraphSegments = persistentListOf<ParagraphState>()
+
+        content.split('\n').forEach { paragraph ->
+            var segments = persistentListOf<Segment>()
+            var isDirty = false
+
+            val isRTL = isArabic(paragraph)
+
+            val wordList = paragraph.trimEnd().split(' ')
+            wordList.forEach { word ->
+                val wordSegment = wordIdentifier(word, images, urls, emojis, tags)
+                if (wordSegment !is RegularTextSegment) {
+                    isDirty = true
+                }
+                segments = segments.add(wordSegment)
+            }
+
+            val newSegments = if (isDirty) {
+                ParagraphState(segments, isRTL)
+            } else {
+                ParagraphState(persistentListOf<Segment>(RegularTextSegment(paragraph)), isRTL)
+            }
+
+            paragraphSegments = paragraphSegments.add(newSegments)
+        }
+
+        return paragraphSegments
+    }
+
+    fun isNumber(word: String): Boolean {
+        return numberPattern.matcher(word).matches()
+    }
+
+    fun isDate(word: String): Boolean {
+        return shortDatePattern.matcher(word).matches() || longDatePattern.matcher(word).matches()
+    }
+
+    private fun isArabic(text: String): Boolean {
+        return text.any { it in '\u0600'..'\u06FF' || it in '\u0750'..'\u077F' }
+    }
+
+    private fun wordIdentifier(word: String, images: Set<String>, urls: Set<String>, emojis: Map<String, String>, tags: ImmutableListOfLists<String>): Segment {
+        val emailMatcher = Patterns.EMAIL_ADDRESS.matcher(word)
+        val phoneMatcher = Patterns.PHONE.matcher(word)
+        val schemelessMatcher = noProtocolUrlValidator.matcher(word)
+
+        return if (word.isEmpty()) {
+            RegularTextSegment(word)
+        } else if (images.contains(word)) {
+            ImageSegment(word)
+        } else if (urls.contains(word)) {
+            LinkSegment(word)
+        } else if (emojis.any { word.contains(it.key) }) {
+            EmojiSegment(word)
+        } else if (word.startsWith("lnbc", true)) {
+            InvoiceSegment(word)
+        } else if (word.startsWith("lnurl", true)) {
+            WithdrawSegment(word)
+        } else if (word.startsWith("cashuA", true)) {
+            CashuSegment(word)
+        } else if (emailMatcher.matches()) {
+            EmailSegment(word)
+        } else if (word.length in 7..14 && !isDate(word) && phoneMatcher.matches()) {
+            PhoneSegment(word)
+        } else if (startsWithNIP19Scheme(word)) {
+            BechSegment(word)
+        } else if (word.startsWith("#")) {
+            parseHash(word, tags)
+        } else if (word.contains(".") && schemelessMatcher.find()) {
+            val url = schemelessMatcher.group(1) // url
+            val additionalChars = schemelessMatcher.group(4) // additional chars
+            val pattern = """^([A-Za-z0-9-_]+(\.[A-Za-z0-9-_]+)+)(:[0-9]+)?(/[^?#]*)?(\?[^#]*)?(#.*)?""".toRegex(RegexOption.IGNORE_CASE)
+            if (pattern.find(word) != null) {
+                SchemelessUrlSegment(word, url, additionalChars)
+            } else {
+                RegularTextSegment(word)
+            }
+        } else {
+            RegularTextSegment(word)
+        }
+    }
+
+    private fun parseHash(word: String, tags: ImmutableListOfLists<String>): Segment {
+        // First #[n]
+
+        val matcher = tagIndex.matcher(word)
+        try {
+            if (matcher.find()) {
+                val index = matcher.group(1)?.toInt()
+                val suffix = matcher.group(2)
+
+                if (index != null && index >= 0 && index < tags.lists.size) {
+                    val tag = tags.lists[index]
+
+                    if (tag.size > 1) {
+                        if (tag[0] == "p") {
+                            return HashIndexUserSegment(word, tag[1], suffix)
+                        } else if (tag[0] == "e" || tag[0] == "a") {
+                            return HashIndexEventSegment(word, tag[1], suffix)
+                        }
+                    }
+                }
+            }
+        } catch (e: Exception) {
+            Log.w("Tag Parser", "Couldn't link tag $word", e)
+        }
+
+        // Second #Amethyst
+        val hashtagMatcher = hashTagsPattern.matcher(word)
+
+        try {
+            if (hashtagMatcher.find()) {
+                val hashtag = hashtagMatcher.group(1)
+                if (hashtag != null) {
+                    return HashTagSegment(word, hashtag, hashtagMatcher.group(2))
+                }
+            }
+        } catch (e: Exception) {
+            Log.e("Hashtag Parser", "Couldn't link hashtag $word", e)
+        }
+
+        return RegularTextSegment(word)
+    }
+
+    companion object {
+        val longDatePattern: Pattern = Pattern.compile("^\\d{4}-\\d{2}-\\d{2}$")
+        val shortDatePattern: Pattern = Pattern.compile("^\\d{2}-\\d{2}-\\d{2}$")
+        val numberPattern: Pattern = Pattern.compile("^(-?[\\d.]+)([a-zA-Z%]*)$")
+    }
+}
+
+@Immutable
+open class Segment(val segmentText: String)
+
+@Immutable
+class ImageSegment(segment: String) : Segment(segment)
+
+@Immutable
+class LinkSegment(segment: String) : Segment(segment)
+
+@Immutable
+class EmojiSegment(segment: String) : Segment(segment)
+
+@Immutable
+class InvoiceSegment(segment: String) : Segment(segment)
+
+@Immutable
+class WithdrawSegment(segment: String) : Segment(segment)
+
+@Immutable
+class CashuSegment(segment: String) : Segment(segment)
+
+@Immutable
+class EmailSegment(segment: String) : Segment(segment)
+
+@Immutable
+class PhoneSegment(segment: String) : Segment(segment)
+
+@Immutable
+class BechSegment(segment: String) : Segment(segment)
+
+@Immutable
+open class HashIndexSegment(segment: String, val hex: String, val extras: String?) : Segment(segment)
+
+@Immutable
+class HashIndexUserSegment(segment: String, hex: String, extras: String?) : HashIndexSegment(segment, hex, extras)
+
+@Immutable
+class HashIndexEventSegment(segment: String, hex: String, extras: String?) : HashIndexSegment(segment, hex, extras)
+
+@Immutable
+class HashTagSegment(segment: String, val hashtag: String, val extras: String?) : Segment(segment)
+
+@Immutable
+class SchemelessUrlSegment(segment: String, val url: String, val extras: String?) : Segment(segment)
+
+@Immutable
+class RegularTextSegment(segment: String) : Segment(segment)
+
+fun startsWithNIP19Scheme(word: String): Boolean {
+    val cleaned = word.lowercase().removePrefix("@").removePrefix("nostr:").removePrefix("@")
+
+    return listOf("npub1", "naddr1", "note1", "nprofile1", "nevent1").any { cleaned.startsWith(it) }
+}

app/src/main/java/com/vitorpamplona/amethyst/service/CashuProcessor.kt

@@ -0,0 +1,114 @@
+package com.vitorpamplona.amethyst.service
+
+import android.content.Context
+import androidx.compose.runtime.Immutable
+import com.fasterxml.jackson.databind.JsonNode
+import com.fasterxml.jackson.module.kotlin.jacksonObjectMapper
+import com.vitorpamplona.amethyst.R
+import com.vitorpamplona.amethyst.service.lnurl.LightningAddressResolver
+import com.vitorpamplona.amethyst.ui.components.GenericLoadable
+import com.vitorpamplona.quartz.events.Event
+import okhttp3.MediaType.Companion.toMediaType
+import okhttp3.Request
+import okhttp3.RequestBody.Companion.toRequestBody
+import java.util.Base64
+
+@Immutable
+data class CashuToken(
+    val token: String,
+    val mint: String,
+    val totalAmount: Long,
+    val fees: Int,
+    val redeemInvoiceAmount: Long,
+    val proofs: JsonNode
+)
+
+class CashuProcessor {
+    fun parse(cashuToken: String): GenericLoadable<CashuToken> {
+        checkNotInMainThread()
+
+        try {
+            val base64token = cashuToken.replace("cashuA", "")
+            val cashu = jacksonObjectMapper().readTree(String(Base64.getDecoder().decode(base64token)))
+            val token = cashu.get("token").get(0)
+            val proofs = token.get("proofs")
+            val mint = token.get("mint").asText()
+
+            var totalAmount = 0L
+            for (proof in proofs) {
+                totalAmount += proof.get("amount").asLong()
+            }
+            val fees = Math.max(((totalAmount * 0.02).toInt()), 2)
+            val redeemInvoiceAmount = totalAmount - fees
+
+            return GenericLoadable.Loaded(CashuToken(cashuToken, mint, totalAmount, fees, redeemInvoiceAmount, proofs))
+        } catch (e: Exception) {
+            return GenericLoadable.Error<CashuToken>("Could not parse this cashu token")
+        }
+    }
+
+    suspend fun melt(token: CashuToken, lud16: String, onSuccess: (String, String) -> Unit, onError: (String, String) -> Unit, context: Context) {
+        checkNotInMainThread()
+
+        runCatching {
+            LightningAddressResolver().lnAddressInvoice(
+                lnaddress = lud16,
+                milliSats = token.redeemInvoiceAmount * 1000, // Make invoice and leave room for fees
+                message = "Redeem Cashu",
+                onSuccess = { invoice ->
+                    meltInvoice(token, invoice, onSuccess, onError, context)
+                },
+                onProgress = {
+                },
+                onError = onError,
+                context = context
+            )
+        }
+    }
+
+    private fun meltInvoice(token: CashuToken, invoice: String, onSuccess: (String, String) -> Unit, onError: (String, String) -> Unit, context: Context) {
+        try {
+            val client = HttpClient.getHttpClient()
+            val url = token.mint + "/melt" // Melt cashu tokens at Mint
+
+            val factory = Event.mapper.nodeFactory
+
+            val jsonObject = factory.objectNode()
+            jsonObject.put("proofs", token.proofs)
+            jsonObject.put("pr", invoice)
+
+            val mediaType = "application/json; charset=utf-8".toMediaType()
+            val requestBody = jsonObject.toString().toRequestBody(mediaType)
+            val request = Request.Builder()
+                .url(url)
+                .post(requestBody)
+                .build()
+
+            client.newCall(request).execute().use {
+                val body = it.body.string()
+                val tree = jacksonObjectMapper().readTree(body)
+
+                val successful = tree?.get("paid")?.asText() == "true"
+
+                if (successful) {
+                    onSuccess(
+                        context.getString(R.string.cashu_sucessful_redemption),
+                        context.getString(R.string.cashu_sucessful_redemption_explainer, token.totalAmount.toString(), token.fees.toString())
+                    )
+                } else {
+                    val msg = tree?.get("detail")?.asText()?.split('.')?.getOrNull(0)?.ifBlank { null }
+                    onError(
+                        context.getString(R.string.cashu_failed_redemption),
+                        if (msg != null) {
+                            context.getString(R.string.cashu_failed_redemption_explainer_error_msg, msg)
+                        } else {
+                            context.getString(R.string.cashu_failed_redemption_explainer_error_msg)
+                        }
+                    )
+                }
+            }
+        } catch (e: Exception) {
+            onError(context.getString(R.string.cashu_sucessful_redemption), context.getString(R.string.cashu_failed_redemption_explainer_error_msg, e.message))
+        }
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/service/Channel.kt

@@ -1,10 +0,0 @@
-package com.vitorpamplona.amethyst.service
-
-import java.util.UUID
-import nostr.postr.JsonFilter
-
-data class Channel (
-  val id: String = UUID.randomUUID().toString().substring(0,4)
-) {
-  var filter: JsonFilter? = null // Inactive when null
-}

app/src/main/java/com/vitorpamplona/amethyst/service/Constants.kt

@@ -1,24 +0,0 @@
-package com.vitorpamplona.amethyst.service
-
-import com.vitorpamplona.amethyst.service.relays.Relay
-
-object Constants {
-    val defaultRelays = arrayOf(
-      Relay("wss://nostr.bitcoiner.social", read = true, write = true),
-      Relay("wss://relay.nostr.bg", read = true, write = true),
-      //Relay("wss://brb.io", read = true, write = true),
-      Relay("wss://nostr.v0l.io", read = true, write = true),
-      Relay("wss://nostr.rocks", read = true, write = true),
-      Relay("wss://relay.damus.io", read = true, write = true),
-      Relay("wss://nostr.fmt.wiz.biz", read = true, write = true),
-      Relay("wss://nostr.oxtr.dev", read = true, write = true),
-      Relay("wss://nostr-relay.wlvs.space", read = true, write = true),
-      //Relay("wss://nostr-2.zebedee.cloud", read = true, write = true),
-      Relay("wss://nostr-pub.wellorder.net", read = true, write = true),
-      Relay("wss://nostr.mom", read = true, write = true),
-      Relay("wss://nostr.orangepill.dev", read = true, write = true),
-      //Relay("wss://nostr-pub.semisol.dev", read = true, write = true),
-      Relay("wss://nostr.onsats.org", read = true, write = true),
-      Relay("wss://nostr.sandwich.farm", read = true, write = true)
-    )
-}

app/src/main/java/com/vitorpamplona/amethyst/service/EmojiUtils.kt

@@ -0,0 +1,107 @@
+package com.vitorpamplona.amethyst.service
+
+import com.vitorpamplona.quartz.events.ImmutableListOfLists
+
+fun String.isUTF16Char(pos: Int): Boolean {
+    return Character.charCount(this.codePointAt(pos)) == 2
+}
+
+fun String.firstFullCharOld(): String {
+    return when (this.length) {
+        0, 1 -> return this
+        2, 3 -> return if (isUTF16Char(0)) this.take(2) else this.take(1)
+        else -> {
+            val first = isUTF16Char(0)
+            val second = isUTF16Char(2)
+            if (first && second) {
+                this.take(4)
+            } else if (first) {
+                this.take(2)
+            } else {
+                this.take(1)
+            }
+        }
+    }
+}
+
+fun String.firstFullChar(): String {
+    var isInJoin = false
+    var hasHadSecondChance = false
+    var start = 0
+    var previousCharLength = 0
+    var next: Int
+    var codePoint: Int
+
+    var i = 0
+
+    while (i < this.length) {
+        codePoint = codePointAt(i)
+
+        // Skips if it starts with the join char 0x200D
+        if (codePoint == 0x200D && previousCharLength == 0) {
+            next = offsetByCodePoints(i, 1)
+            start = next
+        } else {
+            // If join, searches for the next char
+            if (codePoint == 0xFE0F) {
+            } else if (codePoint == 0x200D) {
+                isInJoin = true
+            } else {
+                // stops when two chars are not joined together
+                if (previousCharLength > 0 && !isInJoin) {
+                    if (Character.charCount(codePoint) == 1 || hasHadSecondChance) {
+                        break
+                    } else {
+                        hasHadSecondChance = true
+                    }
+                } else {
+                    hasHadSecondChance = false
+                }
+
+                isInJoin = false
+            }
+
+            // next char to evaluate
+            next = offsetByCodePoints(i, 1)
+            previousCharLength += (next - i)
+        }
+
+        i = next
+    }
+
+    // if ends in join, then seachers backwards until a char is found.
+    if (isInJoin) {
+        i = previousCharLength - 1
+        while (i > 0) {
+            if (this[i].code == 0x200D) {
+                previousCharLength -= 1
+            } else {
+                break
+            }
+
+            i -= 1
+        }
+    }
+
+    return substring(start, start + previousCharLength)
+}
+
+fun String.firstFullCharOrEmoji(tags: ImmutableListOfLists<String>): String {
+    if (length <= 2) {
+        return firstFullChar()
+    }
+
+    if (this[0] == ':') {
+        // makes sure an emoji exists
+        val emojiParts = this.split(":", limit = 3)
+        if (emojiParts.size >= 2) {
+            val emojiName = emojiParts[1]
+            val emojiUrl = tags.lists.firstOrNull() { it.size > 1 && it[1] == emojiName }?.getOrNull(2)
+            if (emojiUrl != null) {
+                return ":$emojiName:$emojiUrl"
+            }
+        }
+    }
+
+    return firstFullChar()
+}

app/src/main/java/com/vitorpamplona/amethyst/service/FileHeader.kt

@@ -0,0 +1,89 @@
+package com.vitorpamplona.amethyst.service
+
+import android.graphics.Bitmap
+import android.graphics.BitmapFactory
+import android.util.Log
+import com.vitorpamplona.amethyst.ui.actions.ImageDownloader
+import com.vitorpamplona.quartz.crypto.CryptoUtils
+import com.vitorpamplona.quartz.encoders.toHexKey
+import io.trbl.blurhash.BlurHash
+import kotlin.math.roundToInt
+
+class FileHeader(
+    val url: String,
+    val mimeType: String?,
+    val hash: String,
+    val size: Int,
+    val dim: String?,
+    val blurHash: String?,
+    val alt: String? = null,
+    val sensitiveContent: Boolean = false
+) {
+    companion object {
+        suspend fun prepare(fileUrl: String, mimeType: String?, alt: String?, sensitiveContent: Boolean, onReady: (FileHeader) -> Unit, onError: () -> Unit) {
+            try {
+                val imageData: ByteArray? = ImageDownloader().waitAndGetImage(fileUrl)
+
+                if (imageData != null) {
+                    prepare(imageData, fileUrl, mimeType, alt, sensitiveContent, onReady, onError)
+                } else {
+                    onError()
+                }
+            } catch (e: Exception) {
+                Log.e("ImageDownload", "Couldn't download image from server: ${e.message}")
+                onError()
+            }
+        }
+
+        fun prepare(
+            data: ByteArray,
+            fileUrl: String,
+            mimeType: String?,
+            alt: String?,
+            sensitiveContent: Boolean,
+            onReady: (FileHeader) -> Unit,
+            onError: () -> Unit
+        ) {
+            try {
+                val hash = CryptoUtils.sha256(data).toHexKey()
+                val size = data.size
+
+                val (blurHash, dim) = if (mimeType?.startsWith("image/") == true) {
+                    val opt = BitmapFactory.Options()
+                    opt.inPreferredConfig = Bitmap.Config.ARGB_8888
+                    val mBitmap = BitmapFactory.decodeByteArray(data, 0, data.size, opt)
+
+                    val intArray = IntArray(mBitmap.width * mBitmap.height)
+                    mBitmap.getPixels(
+                        intArray,
+                        0,
+                        mBitmap.width,
+                        0,
+                        0,
+                        mBitmap.width,
+                        mBitmap.height
+                    )
+
+                    val dim = "${mBitmap.width}x${mBitmap.height}"
+
+                    val aspectRatio = (mBitmap.width).toFloat() / (mBitmap.height).toFloat()
+
+                    if (aspectRatio > 1) {
+                        Pair(BlurHash.encode(intArray, mBitmap.width, mBitmap.height, 9, (9 * (1 / aspectRatio)).roundToInt()), dim)
+                    } else if (aspectRatio < 1) {
+                        Pair(BlurHash.encode(intArray, mBitmap.width, mBitmap.height, (9 * aspectRatio).roundToInt(), 9), dim)
+                    } else {
+                        Pair(BlurHash.encode(intArray, mBitmap.width, mBitmap.height, 4, 4), dim)
+                    }
+                } else {
+                    Pair(null, null)
+                }
+
+                onReady(FileHeader(fileUrl, mimeType, hash, size, dim, blurHash, alt, sensitiveContent))
+            } catch (e: Exception) {
+                Log.e("ImageDownload", "Couldn't convert image in to File Header: ${e.message}")
+                onError()
+            }
+        }
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/service/HttpClient.kt

@@ -0,0 +1,43 @@
+package com.vitorpamplona.amethyst.service
+
+import okhttp3.OkHttpClient
+import java.net.InetSocketAddress
+import java.net.Proxy
+import java.time.Duration
+import kotlin.properties.Delegates
+
+object HttpClient {
+    var proxyChangeListeners = ArrayList<() -> Unit>()
+
+    // fires off every time value of the property changes
+    private var internalProxy: Proxy? by Delegates.observable(null) { _, oldValue, newValue ->
+        if (oldValue != newValue) {
+            proxyChangeListeners.forEach {
+                it()
+            }
+        }
+    }
+
+    fun start(proxy: Proxy?) {
+        this.internalProxy = proxy
+    }
+
+    fun getHttpClient(): OkHttpClient {
+        val seconds = if (internalProxy != null) 20L else 10L
+        val duration = Duration.ofSeconds(seconds)
+        return OkHttpClient.Builder()
+            .proxy(internalProxy)
+            .readTimeout(duration)
+            .connectTimeout(duration)
+            .writeTimeout(duration)
+            .build()
+    }
+
+    fun getProxy(): Proxy? {
+        return internalProxy
+    }
+
+    fun initProxy(useProxy: Boolean, hostname: String, port: Int): Proxy? {
+        return if (useProxy) Proxy(Proxy.Type.SOCKS, InetSocketAddress(hostname, port)) else null
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/service/LocationUtil.kt

@@ -0,0 +1,79 @@
+package com.vitorpamplona.amethyst.service
+
+import android.annotation.SuppressLint
+import android.content.Context
+import android.location.Geocoder
+import android.location.Location
+import android.location.LocationListener
+import android.location.LocationManager
+import android.os.HandlerThread
+import androidx.compose.runtime.MutableState
+import androidx.compose.runtime.mutableStateOf
+import kotlinx.coroutines.flow.MutableStateFlow
+
+class LocationUtil(context: Context) {
+    companion object {
+        const val MIN_TIME: Long = 1000L
+        const val MIN_DISTANCE: Float = 0.0f
+    }
+
+    private val locationManager = context.getSystemService(Context.LOCATION_SERVICE) as LocationManager
+    private var locationListener: LocationListener? = null
+
+    val locationStateFlow = MutableStateFlow<Location>(Location(LocationManager.NETWORK_PROVIDER))
+    val providerState = mutableStateOf(false)
+    val isStart: MutableState<Boolean> = mutableStateOf(false)
+
+    private val locHandlerThread = HandlerThread("LocationUtil Thread")
+
+    init {
+        locHandlerThread.start()
+    }
+
+    @SuppressLint("MissingPermission")
+    fun start(minTimeMs: Long = MIN_TIME, minDistanceM: Float = MIN_DISTANCE) {
+        locationListener().let {
+            locationListener = it
+            locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, minTimeMs, minDistanceM, it, locHandlerThread.looper)
+        }
+        providerState.value = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER)
+        isStart.value = true
+    }
+
+    fun stop() {
+        locationListener?.let {
+            locationManager.removeUpdates(it)
+        }
+        isStart.value = false
+    }
+
+    private fun locationListener() = object : LocationListener {
+        override fun onLocationChanged(location: Location) {
+            locationStateFlow.value = location
+        }
+
+        override fun onProviderEnabled(provider: String) {
+            providerState.value = true
+        }
+
+        override fun onProviderDisabled(provider: String) {
+            providerState.value = false
+        }
+    }
+}
+
+class ReverseGeoLocationUtil {
+    suspend fun execute(
+        location: Location,
+        context: Context
+    ): String? {
+        return try {
+            Geocoder(context).getFromLocation(location.latitude, location.longitude, 1)?.firstOrNull()?.let { address ->
+                listOfNotNull(address.locality ?: address.subAdminArea, address.countryCode).joinToString(", ")
+            }
+        } catch (e: Exception) {
+            e.printStackTrace()
+            return null
+        }
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/service/MainThreadChecker.kt

@@ -0,0 +1,12 @@
+package com.vitorpamplona.amethyst.service
+
+import android.os.Looper
+import com.vitorpamplona.amethyst.BuildConfig
+
+fun checkNotInMainThread() {
+    if (BuildConfig.DEBUG && isMainThread()) throw OnMainThreadException("It should not be in the MainThread")
+}
+
+fun isMainThread() = Looper.myLooper() == Looper.getMainLooper()
+
+class OnMainThreadException(str: String) : RuntimeException(str)

app/src/main/java/com/vitorpamplona/amethyst/service/NIP30Parser.kt

@@ -0,0 +1,34 @@
+package com.vitorpamplona.amethyst.service
+
+import androidx.compose.runtime.Immutable
+import java.util.regex.Pattern
+
+@Immutable
+class NIP30Parser {
+    val customEmojiPattern: Pattern = Pattern.compile("\\:([A-Za-z0-9_\\-]+)\\:", Pattern.CASE_INSENSITIVE)
+
+    fun buildArray(input: String): List<String> {
+        val matcher = customEmojiPattern.matcher(input)
+        val list = mutableListOf<String>()
+        while (matcher.find()) {
+            list.add(matcher.group())
+        }
+
+        if (list.isEmpty()) {
+            return listOf(input)
+        }
+
+        val regularChars = input.split(customEmojiPattern.toRegex())
+
+        val finalList = mutableListOf<String>()
+        var index = 0
+        for (e in regularChars) {
+            finalList.add(e)
+            if (index < list.size) {
+                finalList.add(list[index])
+            }
+            index++
+        }
+        return finalList
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/service/Nip05Verifier.kt

@@ -0,0 +1,104 @@
+package com.vitorpamplona.amethyst.service
+
+import com.fasterxml.jackson.module.kotlin.jacksonObjectMapper
+import com.vitorpamplona.amethyst.BuildConfig
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
+import okhttp3.Call
+import okhttp3.Callback
+import okhttp3.Request
+import okhttp3.Response
+
+class Nip05Verifier() {
+    fun assembleUrl(nip05address: String): String? {
+        val parts = nip05address.trim().split("@")
+
+        if (parts.size == 2) {
+            return "https://${parts[1]}/.well-known/nostr.json?name=${parts[0]}"
+        }
+        if (parts.size == 1) {
+            return "https://${parts[0]}/.well-known/nostr.json?name=_"
+        }
+
+        return null
+    }
+
+    suspend fun fetchNip05Json(nip05: String, onSuccess: (String) -> Unit, onError: (String) -> Unit) = withContext(Dispatchers.IO) {
+        checkNotInMainThread()
+
+        val url = assembleUrl(nip05)
+
+        if (url == null) {
+            onError("Could not assemble url from Nip05: \"${nip05}\". Check the user's setup")
+            return@withContext
+        }
+
+        try {
+            val request = Request.Builder()
+                .header("User-Agent", "Amethyst/${BuildConfig.VERSION_NAME}")
+                .url(url)
+                .build()
+
+            HttpClient.getHttpClient().newCall(request).enqueue(object : Callback {
+                override fun onResponse(call: Call, response: Response) {
+                    checkNotInMainThread()
+
+                    response.use {
+                        if (it.isSuccessful) {
+                            onSuccess(it.body.string())
+                        } else {
+                            onError("Could not resolve $nip05. Error: ${it.code}. Check if the server is up and if the address $nip05 is correct")
+                        }
+                    }
+                }
+
+                override fun onFailure(call: Call, e: java.io.IOException) {
+                    onError("Could not resolve $url. Check if the server is up and if the address $nip05 is correct")
+                    e.printStackTrace()
+                }
+            })
+        } catch (e: java.lang.Exception) {
+            onError("Could not resolve '$url': ${e.message}")
+        }
+    }
+
+    suspend fun verifyNip05(nip05: String, onSuccess: (String) -> Unit, onError: (String) -> Unit) {
+        // check fails on tests
+        checkNotInMainThread()
+
+        val mapper = jacksonObjectMapper()
+
+        fetchNip05Json(
+            nip05,
+            onSuccess = {
+                checkNotInMainThread()
+
+                // NIP05 usernames are case insensitive, but JSON properties are not
+                // converts the json to lowercase and then tries to access the username via a
+                // lowercase version of the username.
+                val nip05url = try {
+                    mapper.readTree(it.lowercase())
+                } catch (t: Throwable) {
+                    onError("Error Parsing JSON from Lightning Address. Check the user's lightning setup")
+                    null
+                }
+
+                val parts = nip05.split("@")
+                val user = if (parts.size == 2) {
+                    parts[0].lowercase()
+                } else {
+                    "_"
+                }
+
+                val hexKey = nip05url?.get("names")?.get(user)?.asText()
+
+                if (hexKey == null) {
+                    onError("Username not found in the NIP05 JSON")
+                } else {
+                    onSuccess(hexKey)
+                }
+            },
+            onError = onError
+        )
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/service/Nip11Retriever.kt

@@ -0,0 +1,103 @@
+package com.vitorpamplona.amethyst.service
+
+import android.util.Log
+import android.util.LruCache
+import com.vitorpamplona.amethyst.model.RelayInformation
+import okhttp3.Call
+import okhttp3.Callback
+import okhttp3.Request
+import okhttp3.Response
+import java.io.IOException
+
+object Nip11CachedRetriever {
+    val relayInformationDocumentCache = LruCache<String, RelayInformation>(100)
+    val retriever = Nip11Retriever()
+
+    suspend fun loadRelayInfo(
+        dirtyUrl: String,
+        onInfo: (RelayInformation) -> Unit,
+        onError: (String, Nip11Retriever.ErrorCode, String?) -> Unit
+    ) {
+        val url = retriever.cleanUrl(dirtyUrl)
+        val doc = relayInformationDocumentCache.get(url)
+
+        if (doc != null) {
+            onInfo(doc)
+        } else {
+            Nip11Retriever().loadRelayInfo(
+                url,
+                dirtyUrl,
+                onInfo = {
+                    relayInformationDocumentCache.put(url, it)
+                    onInfo(it)
+                },
+                onError
+            )
+        }
+    }
+}
+
+class Nip11Retriever {
+    enum class ErrorCode {
+        FAIL_TO_ASSEMBLE_URL,
+        FAIL_TO_REACH_SERVER,
+        FAIL_TO_PARSE_RESULT,
+        FAIL_WITH_HTTP_STATUS
+    }
+
+    fun cleanUrl(dirtyUrl: String): String {
+        return if (dirtyUrl.contains("://")) {
+            dirtyUrl
+                .replace("wss://", "https://")
+                .replace("ws://", "http://")
+        } else {
+            "https://$dirtyUrl"
+        }
+    }
+
+    suspend fun loadRelayInfo(
+        url: String,
+        dirtyUrl: String,
+        onInfo: (RelayInformation) -> Unit,
+        onError: (String, ErrorCode, String?) -> Unit
+    ) {
+        try {
+            val request: Request = Request
+                .Builder()
+                .header("Accept", "application/nostr+json")
+                .url(url)
+                .build()
+
+            HttpClient.getHttpClient()
+                .newCall(request)
+                .enqueue(
+                    object : Callback {
+                        override fun onResponse(call: Call, response: Response) {
+                            checkNotInMainThread()
+                            response.use {
+                                val body = it.body.string()
+                                try {
+                                    if (it.isSuccessful) {
+                                        onInfo(RelayInformation.fromJson(body))
+                                    } else {
+                                        onError(dirtyUrl, ErrorCode.FAIL_WITH_HTTP_STATUS, it.code.toString())
+                                    }
+                                } catch (e: Exception) {
+                                    Log.e("RelayInfoFail", "Resulting Message from Relay $dirtyUrl in not parseable: $body", e)
+                                    onError(dirtyUrl, ErrorCode.FAIL_TO_PARSE_RESULT, e.message)
+                                }
+                            }
+                        }
+
+                        override fun onFailure(call: Call, e: IOException) {
+                            Log.e("RelayInfoFail", "$dirtyUrl unavailable", e)
+                            onError(dirtyUrl, ErrorCode.FAIL_TO_REACH_SERVER, e.message)
+                        }
+                    }
+                )
+        } catch (e: Exception) {
+            Log.e("RelayInfoFail", "Invalid URL $dirtyUrl", e)
+            onError(dirtyUrl, ErrorCode.FAIL_TO_ASSEMBLE_URL, e.message)
+        }
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/service/Nip47.kt

@@ -0,0 +1,32 @@
+package com.vitorpamplona.amethyst.ui.note
+
+import android.net.Uri
+import com.vitorpamplona.amethyst.model.Nip47URI
+import com.vitorpamplona.quartz.encoders.decodePublicKey
+import com.vitorpamplona.quartz.encoders.toHexKey
+
+// Rename to the corect nip number when ready.
+object Nip47 {
+    fun parse(uri: String): Nip47URI {
+        // nostrwalletconnect://b889ff5b1513b641e2a139f661a661364979c5beee91842f8f0ef42ab558e9d4?relay=wss%3A%2F%2Frelay.damus.io&metadata=%7B%22name%22%3A%22Example%22%7D
+
+        val url = Uri.parse(uri)
+
+        if (url.scheme != "nostrwalletconnect" && url.scheme != "nostr+walletconnect") {
+            throw IllegalArgumentException("Not a Wallet Connect QR Code")
+        }
+
+        val pubkey = url.host ?: throw IllegalArgumentException("Hostname cannot be null")
+
+        val pubkeyHex = try {
+            decodePublicKey(pubkey).toHexKey()
+        } catch (e: Exception) {
+            throw IllegalArgumentException("Hostname is not a valid Nostr Pubkey")
+        }
+
+        val relay = url.getQueryParameter("relay")
+        val secret = url.getQueryParameter("secret")
+
+        return Nip47URI(pubkeyHex, relay, secret)
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/service/NostrAccountDataSource.kt

@@ -2,73 +2,254 @@ package com.vitorpamplona.amethyst.service
 
 import com.vitorpamplona.amethyst.model.Account
 import com.vitorpamplona.amethyst.model.LocalCache
-import com.vitorpamplona.amethyst.model.Note
-import com.vitorpamplona.amethyst.model.UserState
-import com.vitorpamplona.amethyst.service.model.RepostEvent
-import nostr.postr.JsonFilter
-import nostr.postr.events.TextNoteEvent
-import nostr.postr.toHex
+import com.vitorpamplona.amethyst.model.User
+import com.vitorpamplona.amethyst.service.relays.COMMON_FEED_TYPES
+import com.vitorpamplona.amethyst.service.relays.Client
+import com.vitorpamplona.amethyst.service.relays.EOSEAccount
+import com.vitorpamplona.amethyst.service.relays.JsonFilter
+import com.vitorpamplona.amethyst.service.relays.Relay
+import com.vitorpamplona.amethyst.service.relays.TypedFilter
+import com.vitorpamplona.quartz.events.AdvertisedRelayListEvent
+import com.vitorpamplona.quartz.events.BadgeAwardEvent
+import com.vitorpamplona.quartz.events.BadgeProfilesEvent
+import com.vitorpamplona.quartz.events.BookmarkListEvent
+import com.vitorpamplona.quartz.events.ChannelMessageEvent
+import com.vitorpamplona.quartz.events.ContactListEvent
+import com.vitorpamplona.quartz.events.EmojiPackSelectionEvent
+import com.vitorpamplona.quartz.events.Event
+import com.vitorpamplona.quartz.events.EventInterface
+import com.vitorpamplona.quartz.events.GenericRepostEvent
+import com.vitorpamplona.quartz.events.GiftWrapEvent
+import com.vitorpamplona.quartz.events.LnZapEvent
+import com.vitorpamplona.quartz.events.LnZapPaymentResponseEvent
+import com.vitorpamplona.quartz.events.MetadataEvent
+import com.vitorpamplona.quartz.events.MuteListEvent
+import com.vitorpamplona.quartz.events.PeopleListEvent
+import com.vitorpamplona.quartz.events.PollNoteEvent
+import com.vitorpamplona.quartz.events.ReactionEvent
+import com.vitorpamplona.quartz.events.ReportEvent
+import com.vitorpamplona.quartz.events.RepostEvent
+import com.vitorpamplona.quartz.events.SealedGossipEvent
+import com.vitorpamplona.quartz.events.StatusEvent
+import com.vitorpamplona.quartz.events.TextNoteEvent
 
-object NostrAccountDataSource: NostrDataSource("AccountData") {
-  lateinit var account: Account
+// TODO: Migrate this to a property of AccountVi
+object NostrAccountDataSource : NostrDataSource("AccountData") {
+    lateinit var account: Account
 
-  private val cacheListener: (UserState) -> Unit = {
-    resetFilters()
-  }
+    val latestEOSEs = EOSEAccount()
+    val hasLoadedTheBasics = mutableMapOf<User, Boolean>()
 
-  override fun start() {
-    if (this::account.isInitialized)
-      account.userProfile().live.observeForever(cacheListener)
-    super.start()
-  }
-
-  override fun stop() {
-    super.stop()
-    if (this::account.isInitialized)
-      account.userProfile().live.removeObserver(cacheListener)
-  }
-
-  fun createAccountFilter(): JsonFilter {
-    return JsonFilter(
-      authors = listOf(account.userProfile().pubkeyHex),
-      since = System.currentTimeMillis() / 1000 - (60 * 60 * 24 * 7), // 4 days
-    )
-  }
-
-  val accountChannel = requestNewChannel()
-
-  fun <T> equalsIgnoreOrder(list1:List<T>?, list2:List<T>?): Boolean {
-    if (list1 == null && list2 == null) return true
-    if (list1 == null) return false
-    if (list2 == null) return false
-
-    return list1.size == list2.size && list1.toSet() == list2.toSet()
-  }
-
-  fun equalAuthors(list1:JsonFilter?, list2:JsonFilter?): Boolean {
-    if (list1 == null && list2 == null) return true
-    if (list1 == null) return false
-    if (list2 == null) return false
-
-    return equalsIgnoreOrder(list1.authors, list2.authors)
-  }
-
-  override fun feed(): List<Note> {
-    val user = account.userProfile()
-    val follows = user.follows.map { it.pubkeyHex }.plus(user.pubkeyHex).toSet()
-
-    return LocalCache.notes.values
-      .filter { (it.event is TextNoteEvent || it.event is RepostEvent) && it.author?.pubkeyHex in follows }
-      .sortedBy { it.event!!.createdAt }
-      .reversed()
-  }
-
-  override fun updateChannelFilters() {
-    // gets everthing about the user logged in
-    val newAccountFilter = createAccountFilter()
-
-    if (!equalAuthors(newAccountFilter, accountChannel.filter)) {
-      accountChannel.filter = newAccountFilter
+    fun createAccountContactListFilter(): TypedFilter {
+        return TypedFilter(
+            types = COMMON_FEED_TYPES,
+            filter = JsonFilter(
+                kinds = listOf(ContactListEvent.kind),
+                authors = listOf(account.userProfile().pubkeyHex),
+                limit = 1
+            )
+        )
     }
-  }
-}
+
+    fun createAccountMetadataFilter(): TypedFilter {
+        return TypedFilter(
+            types = COMMON_FEED_TYPES,
+            filter = JsonFilter(
+                kinds = listOf(MetadataEvent.kind),
+                authors = listOf(account.userProfile().pubkeyHex),
+                limit = 1
+            )
+        )
+    }
+
+    fun createAccountRelayListFilter(): TypedFilter {
+        return TypedFilter(
+            types = COMMON_FEED_TYPES,
+            filter = JsonFilter(
+                kinds = listOf(AdvertisedRelayListEvent.kind, StatusEvent.kind),
+                authors = listOf(account.userProfile().pubkeyHex),
+                limit = 5
+            )
+        )
+    }
+
+    fun createAccountAcceptedAwardsFilter(): TypedFilter {
+        return TypedFilter(
+            types = COMMON_FEED_TYPES,
+            filter = JsonFilter(
+                kinds = listOf(BadgeProfilesEvent.kind, EmojiPackSelectionEvent.kind),
+                authors = listOf(account.userProfile().pubkeyHex),
+                limit = 10
+            )
+        )
+    }
+
+    fun createAccountBookmarkListFilter(): TypedFilter {
+        return TypedFilter(
+            types = COMMON_FEED_TYPES,
+            filter = JsonFilter(
+                kinds = listOf(BookmarkListEvent.kind, PeopleListEvent.kind, MuteListEvent.kind),
+                authors = listOf(account.userProfile().pubkeyHex),
+                limit = 100
+            )
+        )
+    }
+
+    fun createAccountReportsFilter(): TypedFilter {
+        return TypedFilter(
+            types = COMMON_FEED_TYPES,
+            filter = JsonFilter(
+                kinds = listOf(ReportEvent.kind),
+                authors = listOf(account.userProfile().pubkeyHex),
+                since = latestEOSEs.users[account.userProfile()]?.followList?.get(account.defaultNotificationFollowList.value)?.relayList
+            )
+        )
+    }
+
+    fun createAccountLastPostsListFilter(): TypedFilter {
+        return TypedFilter(
+            types = COMMON_FEED_TYPES,
+            filter = JsonFilter(
+                authors = listOf(account.userProfile().pubkeyHex),
+                limit = 400
+            )
+        )
+    }
+
+    fun createNotificationFilter() = TypedFilter(
+        types = COMMON_FEED_TYPES,
+        filter = JsonFilter(
+            kinds = listOf(
+                TextNoteEvent.kind,
+                PollNoteEvent.kind,
+                ReactionEvent.kind,
+                RepostEvent.kind,
+                GenericRepostEvent.kind,
+                ReportEvent.kind,
+                LnZapEvent.kind,
+                LnZapPaymentResponseEvent.kind,
+                ChannelMessageEvent.kind,
+                BadgeAwardEvent.kind
+            ),
+            tags = mapOf("p" to listOf(account.userProfile().pubkeyHex)),
+            limit = 4000,
+            since = latestEOSEs.users[account.userProfile()]?.followList?.get(account.defaultNotificationFollowList.value)?.relayList
+        )
+    )
+
+    fun createGiftWrapsToMeFilter() = TypedFilter(
+        types = COMMON_FEED_TYPES,
+        filter = JsonFilter(
+            kinds = listOf(GiftWrapEvent.kind),
+            tags = mapOf("p" to listOf(account.userProfile().pubkeyHex))
+        )
+    )
+
+    val accountChannel = requestNewChannel { time, relayUrl ->
+        if (hasLoadedTheBasics[account.userProfile()] != null) {
+            latestEOSEs.addOrUpdate(account.userProfile(), account.defaultNotificationFollowList.value, relayUrl, time)
+        } else {
+            hasLoadedTheBasics[account.userProfile()] = true
+
+            invalidateFilters()
+        }
+    }
+
+    override fun consume(event: Event, relay: Relay) {
+        checkNotInMainThread()
+
+        if (LocalCache.justVerify(event)) {
+            if (event is GiftWrapEvent) {
+                // Avoid decrypting over and over again if the event already exist.
+                if (LocalCache.getNoteIfExists(event.id) != null) return
+
+                event.cachedGift(account.signer) {
+                    this.consume(it, relay)
+                }
+            }
+
+            if (event is SealedGossipEvent) {
+                // Avoid decrypting over and over again if the event already exist.
+                if (LocalCache.getNoteIfExists(event.id) != null) return
+
+                event.cachedGossip(account.signer) {
+                    LocalCache.justConsume(it, relay)
+                }
+            } else {
+                LocalCache.justConsume(event, relay)
+            }
+        }
+    }
+
+    override fun markAsSeenOnRelay(eventId: String, relay: Relay) {
+        checkNotInMainThread()
+
+        super.markAsSeenOnRelay(eventId, relay)
+
+        val note = LocalCache.getNoteIfExists(eventId) ?: return
+        val privKey = account.keyPair.privKey ?: return
+
+        val noteEvent = note.event ?: return
+        markInnerAsSeenOnRelay(noteEvent, privKey, relay)
+    }
+
+    private fun markInnerAsSeenOnRelay(noteEvent: EventInterface, privKey: ByteArray, relay: Relay) {
+        LocalCache.getNoteIfExists(noteEvent.id())?.addRelay(relay)
+
+        if (noteEvent is GiftWrapEvent) {
+            noteEvent.cachedGift(account.signer) { gift ->
+                markInnerAsSeenOnRelay(gift, privKey, relay)
+            }
+        } else if (noteEvent is SealedGossipEvent) {
+            noteEvent.cachedGossip(account.signer) { rumor ->
+                markInnerAsSeenOnRelay(rumor, privKey, relay)
+            }
+        }
+    }
+
+    override fun updateChannelFilters() {
+        return if (hasLoadedTheBasics[account.userProfile()] != null) {
+            // gets everthing about the user logged in
+            accountChannel.typedFilters = listOf(
+                createAccountMetadataFilter(),
+                createAccountContactListFilter(),
+                createAccountRelayListFilter(),
+                createNotificationFilter(),
+                createGiftWrapsToMeFilter(),
+                createAccountReportsFilter(),
+                createAccountAcceptedAwardsFilter(),
+                createAccountBookmarkListFilter(),
+                createAccountLastPostsListFilter()
+            ).ifEmpty { null }
+        } else {
+            // just the basics.
+            accountChannel.typedFilters = listOf(
+                createAccountMetadataFilter(),
+                createAccountContactListFilter(),
+                createAccountRelayListFilter(),
+                createAccountBookmarkListFilter()
+            ).ifEmpty { null }
+        }
+    }
+
+    override fun auth(relay: Relay, challenge: String) {
+        super.auth(relay, challenge)
+
+        if (this::account.isInitialized) {
+            account.createAuthEvent(relay, challenge) {
+                Client.send(
+                    it,
+                    relay.url
+                )
+            }
+        }
+    }
+
+    override fun pay(relay: Relay, lnInvoice: String?, description: String?, otherOptionsUrl: String?) {
+        super.pay(relay, lnInvoice, description, otherOptionsUrl)
+
+        if (this::account.isInitialized) {
+            account.addPaymentRequestIfNew(Account.PaymentRequest(relay.url, lnInvoice, description, otherOptionsUrl))
+        }
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/service/NostrChannelDataSource.kt

@@ -0,0 +1,90 @@
+package com.vitorpamplona.amethyst.service
+
+import com.vitorpamplona.amethyst.model.Account
+import com.vitorpamplona.amethyst.model.Channel
+import com.vitorpamplona.amethyst.model.LiveActivitiesChannel
+import com.vitorpamplona.amethyst.model.PublicChatChannel
+import com.vitorpamplona.amethyst.service.relays.FeedType
+import com.vitorpamplona.amethyst.service.relays.JsonFilter
+import com.vitorpamplona.amethyst.service.relays.TypedFilter
+import com.vitorpamplona.quartz.events.ChannelMessageEvent
+import com.vitorpamplona.quartz.events.LiveActivitiesChatMessageEvent
+
+object NostrChannelDataSource : NostrDataSource("ChatroomFeed") {
+    var account: Account? = null
+    var channel: Channel? = null
+
+    fun loadMessagesBetween(account: Account, channel: Channel) {
+        this.account = account
+        this.channel = channel
+        resetFilters()
+    }
+
+    fun clear() {
+        account = null
+        channel = null
+    }
+
+    fun createMessagesByMeToChannelFilter(): TypedFilter? {
+        val myAccount = account ?: return null
+
+        if (channel is PublicChatChannel) {
+            // Brings on messages by the user from all other relays.
+            // Since we ship with write to public, read from private only
+            // this guarantees that messages from the author do not disappear.
+            return TypedFilter(
+                types = setOf(FeedType.FOLLOWS, FeedType.PRIVATE_DMS, FeedType.GLOBAL, FeedType.SEARCH),
+                filter = JsonFilter(
+                    kinds = listOf(ChannelMessageEvent.kind),
+                    authors = listOf(myAccount.userProfile().pubkeyHex),
+                    limit = 50
+                )
+            )
+        } else if (channel is LiveActivitiesChannel) {
+            // Brings on messages by the user from all other relays.
+            // Since we ship with write to public, read from private only
+            // this guarantees that messages from the author do not disappear.
+            return TypedFilter(
+                types = setOf(FeedType.FOLLOWS, FeedType.PRIVATE_DMS, FeedType.GLOBAL, FeedType.SEARCH),
+                filter = JsonFilter(
+                    kinds = listOf(LiveActivitiesChatMessageEvent.kind),
+                    authors = listOf(myAccount.userProfile().pubkeyHex),
+                    limit = 50
+                )
+            )
+        }
+        return null
+    }
+
+    fun createMessagesToChannelFilter(): TypedFilter? {
+        if (channel is PublicChatChannel) {
+            return TypedFilter(
+                types = setOf(FeedType.PUBLIC_CHATS),
+                filter = JsonFilter(
+                    kinds = listOf(ChannelMessageEvent.kind),
+                    tags = mapOf("e" to listOfNotNull(channel?.idHex)),
+                    limit = 200
+                )
+            )
+        } else if (channel is LiveActivitiesChannel) {
+            return TypedFilter(
+                types = setOf(FeedType.PUBLIC_CHATS),
+                filter = JsonFilter(
+                    kinds = listOf(LiveActivitiesChatMessageEvent.kind),
+                    tags = mapOf("a" to listOfNotNull(channel?.idHex)),
+                    limit = 200
+                )
+            )
+        }
+        return null
+    }
+
+    val messagesChannel = requestNewChannel()
+
+    override fun updateChannelFilters() {
+        messagesChannel.typedFilters = listOfNotNull(
+            createMessagesToChannelFilter(),
+            createMessagesByMeToChannelFilter()
+        ).ifEmpty { null }
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/service/NostrChatroomDataSource.kt

@@ -0,0 +1,73 @@
+package com.vitorpamplona.amethyst.service
+
+import com.vitorpamplona.amethyst.model.Account
+import com.vitorpamplona.amethyst.service.relays.EOSEAccount
+import com.vitorpamplona.amethyst.service.relays.FeedType
+import com.vitorpamplona.amethyst.service.relays.JsonFilter
+import com.vitorpamplona.amethyst.service.relays.TypedFilter
+import com.vitorpamplona.quartz.events.ChatroomKey
+import com.vitorpamplona.quartz.events.PrivateDmEvent
+
+object NostrChatroomDataSource : NostrDataSource("ChatroomFeed") {
+    lateinit var account: Account
+    private var withRoom: ChatroomKey? = null
+
+    private val latestEOSEs = EOSEAccount()
+
+    fun loadMessagesBetween(accountIn: Account, withRoom: ChatroomKey) {
+        this.account = accountIn
+        this.withRoom = withRoom
+        resetFilters()
+    }
+
+    fun createMessagesToMeFilter(): TypedFilter? {
+        val myPeer = withRoom
+
+        return if (myPeer != null) {
+            TypedFilter(
+                types = setOf(FeedType.PRIVATE_DMS),
+                filter = JsonFilter(
+                    kinds = listOf(PrivateDmEvent.kind),
+                    authors = myPeer.users.map { it },
+                    tags = mapOf("p" to listOf(account.userProfile().pubkeyHex)),
+                    since = latestEOSEs.users[account.userProfile()]?.followList?.get(withRoom.hashCode().toString())?.relayList
+                )
+            )
+        } else {
+            null
+        }
+    }
+
+    fun createMessagesFromMeFilter(): TypedFilter? {
+        val myPeer = withRoom
+
+        return if (myPeer != null) {
+            TypedFilter(
+                types = setOf(FeedType.PRIVATE_DMS),
+                filter = JsonFilter(
+                    kinds = listOf(PrivateDmEvent.kind),
+                    authors = listOf(account.userProfile().pubkeyHex),
+                    tags = mapOf("p" to myPeer.users.map { it }),
+                    since = latestEOSEs.users[account.userProfile()]?.followList?.get(withRoom.hashCode().toString())?.relayList
+                )
+            )
+        } else {
+            null
+        }
+    }
+
+    fun clearEOSEs(account: Account) {
+        latestEOSEs.removeDataFor(account.userProfile())
+    }
+
+    val inandoutChannel = requestNewChannel { time, relayUrl ->
+        latestEOSEs.addOrUpdate(account.userProfile(), withRoom.hashCode().toString(), relayUrl, time)
+    }
+
+    override fun updateChannelFilters() {
+        inandoutChannel.typedFilters = listOfNotNull(
+            createMessagesToMeFilter(),
+            createMessagesFromMeFilter()
+        ).ifEmpty { null }
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/service/NostrChatroomListDataSource.kt

@@ -0,0 +1,108 @@
+package com.vitorpamplona.amethyst.service
+
+import com.vitorpamplona.amethyst.model.Account
+import com.vitorpamplona.amethyst.service.relays.COMMON_FEED_TYPES
+import com.vitorpamplona.amethyst.service.relays.EOSEAccount
+import com.vitorpamplona.amethyst.service.relays.FeedType
+import com.vitorpamplona.amethyst.service.relays.JsonFilter
+import com.vitorpamplona.amethyst.service.relays.TypedFilter
+import com.vitorpamplona.quartz.events.ChannelCreateEvent
+import com.vitorpamplona.quartz.events.ChannelMessageEvent
+import com.vitorpamplona.quartz.events.ChannelMetadataEvent
+import com.vitorpamplona.quartz.events.PrivateDmEvent
+
+object NostrChatroomListDataSource : NostrDataSource("MailBoxFeed") {
+    lateinit var account: Account
+
+    val latestEOSEs = EOSEAccount()
+    val chatRoomList = "ChatroomList"
+
+    fun createMessagesToMeFilter() = TypedFilter(
+        types = setOf(FeedType.PRIVATE_DMS),
+        filter = JsonFilter(
+            kinds = listOf(PrivateDmEvent.kind),
+            tags = mapOf("p" to listOf(account.userProfile().pubkeyHex)),
+            since = latestEOSEs.users[account.userProfile()]?.followList?.get(chatRoomList)?.relayList
+        )
+    )
+
+    fun createMessagesFromMeFilter() = TypedFilter(
+        types = setOf(FeedType.PRIVATE_DMS),
+        filter = JsonFilter(
+            kinds = listOf(PrivateDmEvent.kind),
+            authors = listOf(account.userProfile().pubkeyHex),
+            since = latestEOSEs.users[account.userProfile()]?.followList?.get(chatRoomList)?.relayList
+        )
+    )
+
+    fun createChannelsCreatedbyMeFilter() = TypedFilter(
+        types = setOf(FeedType.PUBLIC_CHATS),
+        filter = JsonFilter(
+            kinds = listOf(ChannelCreateEvent.kind, ChannelMetadataEvent.kind),
+            authors = listOf(account.userProfile().pubkeyHex),
+            since = latestEOSEs.users[account.userProfile()]?.followList?.get(chatRoomList)?.relayList
+        )
+    )
+
+    fun createMyChannelsFilter(): TypedFilter {
+        val followingEvents = account.selectedChatsFollowList()
+
+        return TypedFilter(
+            types = COMMON_FEED_TYPES, // Metadata comes from any relay
+            filter = JsonFilter(
+                kinds = listOf(ChannelCreateEvent.kind),
+                ids = followingEvents.toList(),
+                since = latestEOSEs.users[account.userProfile()]?.followList?.get(chatRoomList)?.relayList
+            )
+        )
+    }
+
+    fun createLastChannelInfoFilter(): List<TypedFilter>? {
+        val followingEvents = account.selectedChatsFollowList()
+
+        return followingEvents.map {
+            TypedFilter(
+                types = COMMON_FEED_TYPES, // Metadata comes from any relay
+                filter = JsonFilter(
+                    kinds = listOf(ChannelMetadataEvent.kind),
+                    tags = mapOf("e" to listOf(it)),
+                    limit = 1
+                )
+            )
+        }
+    }
+
+    fun createLastMessageOfEachChannelFilter(): List<TypedFilter>? {
+        val followingEvents = account.selectedChatsFollowList()
+
+        return followingEvents.map {
+            TypedFilter(
+                types = setOf(FeedType.PUBLIC_CHATS),
+                filter = JsonFilter(
+                    kinds = listOf(ChannelMessageEvent.kind),
+                    tags = mapOf("e" to listOf(it)),
+                    since = latestEOSEs.users[account.userProfile()]?.followList?.get(chatRoomList)?.relayList,
+                    limit = 50 // Remember to consider spam that is being removed from the UI
+                )
+            )
+        }
+    }
+
+    val chatroomListChannel = requestNewChannel { time, relayUrl ->
+        latestEOSEs.addOrUpdate(account.userProfile(), chatRoomList, relayUrl, time)
+    }
+
+    override fun updateChannelFilters() {
+        val list = listOf(
+            createMessagesToMeFilter(),
+            createMessagesFromMeFilter(),
+            createMyChannelsFilter()
+        )
+
+        chatroomListChannel.typedFilters = listOfNotNull(
+            list,
+            createLastChannelInfoFilter(),
+            createLastMessageOfEachChannelFilter()
+        ).flatten().ifEmpty { null }
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/service/NostrCommunityDataSource.kt

@@ -0,0 +1,41 @@
+package com.vitorpamplona.amethyst.service
+
+import com.vitorpamplona.amethyst.model.AddressableNote
+import com.vitorpamplona.amethyst.service.relays.COMMON_FEED_TYPES
+import com.vitorpamplona.amethyst.service.relays.JsonFilter
+import com.vitorpamplona.amethyst.service.relays.TypedFilter
+import com.vitorpamplona.quartz.events.CommunityDefinitionEvent
+import com.vitorpamplona.quartz.events.CommunityPostApprovalEvent
+
+object NostrCommunityDataSource : NostrDataSource("SingleCommunityFeed") {
+    private var communityToWatch: AddressableNote? = null
+
+    private fun createLoadCommunityFilter(): TypedFilter? {
+        val myCommunityToWatch = communityToWatch ?: return null
+
+        val community = myCommunityToWatch.event as? CommunityDefinitionEvent ?: return null
+
+        return TypedFilter(
+            types = COMMON_FEED_TYPES,
+            filter = JsonFilter(
+                authors = community.moderators().map { it.key }.plus(listOfNotNull(myCommunityToWatch.author?.pubkeyHex)),
+                tags = mapOf(
+                    "a" to listOf(myCommunityToWatch.address.toTag())
+                ),
+                kinds = listOf(CommunityPostApprovalEvent.kind),
+                limit = 500
+            )
+        )
+    }
+
+    val loadCommunityChannel = requestNewChannel()
+
+    override fun updateChannelFilters() {
+        loadCommunityChannel.typedFilters = listOfNotNull(createLoadCommunityFilter()).ifEmpty { null }
+    }
+
+    fun loadCommunity(note: AddressableNote?) {
+        communityToWatch = note
+        invalidateFilters()
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/service/NostrDataSource.kt

@@ -1,135 +1,203 @@
 package com.vitorpamplona.amethyst.service
 
+import android.util.Log
 import com.vitorpamplona.amethyst.model.LocalCache
-import com.vitorpamplona.amethyst.model.Note
-import com.vitorpamplona.amethyst.service.model.ReactionEvent
-import com.vitorpamplona.amethyst.service.model.RepostEvent
 import com.vitorpamplona.amethyst.service.relays.Client
 import com.vitorpamplona.amethyst.service.relays.Relay
-import java.util.Collections
-import nostr.postr.events.ContactListEvent
-import nostr.postr.events.DeletionEvent
-import nostr.postr.events.Event
-import nostr.postr.events.MetadataEvent
-import nostr.postr.events.PrivateDmEvent
-import nostr.postr.events.RecommendRelayEvent
-import nostr.postr.events.TextNoteEvent
+import com.vitorpamplona.amethyst.service.relays.Subscription
+import com.vitorpamplona.amethyst.ui.components.BundledUpdate
+import com.vitorpamplona.quartz.events.Event
+import com.vitorpamplona.quartz.utils.TimeUtils
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.SupervisorJob
+import kotlinx.coroutines.cancel
+import kotlinx.coroutines.launch
+import java.util.UUID
+import java.util.concurrent.atomic.AtomicBoolean
 
 abstract class NostrDataSource(val debugName: String) {
-  private val channels = Collections.synchronizedSet(mutableSetOf<Channel>())
-  private val channelIds =  Collections.synchronizedSet(mutableSetOf<String>())
+    private val scope = CoroutineScope(Dispatchers.IO + SupervisorJob())
 
-  private val clientListener = object : Client.Listener() {
-    override fun onEvent(event: Event, subscriptionId: String, relay: Relay) {
-      if (subscriptionId in channelIds) {
-        when (event) {
-          is MetadataEvent -> LocalCache.consume(event)
-          is TextNoteEvent -> LocalCache.consume(event)
-          is RecommendRelayEvent -> LocalCache.consume(event)
-          is ContactListEvent -> LocalCache.consume(event)
-          is PrivateDmEvent -> LocalCache.consume(event)
-          is DeletionEvent -> LocalCache.consume(event)
-          is RepostEvent -> LocalCache.consume(event)
-          is ReactionEvent -> LocalCache.consume(event)
-          else -> when (event.kind) {
-            RepostEvent.kind -> LocalCache.consume(RepostEvent(event.id, event.pubKey, event.createdAt, event.tags, event.content, event.sig))
-            ReactionEvent.kind -> LocalCache.consume(ReactionEvent(event.id, event.pubKey, event.createdAt, event.tags, event.content, event.sig))
-          }
+    private var subscriptions = mapOf<String, Subscription>()
+    data class Counter(var counter: Int)
+
+    private var eventCounter = mapOf<String, Counter>()
+    var changingFilters = AtomicBoolean()
+
+    fun printCounter() {
+        eventCounter.forEach {
+            Log.d("STATE DUMP", "Received Events ${it.key}: ${it.value.counter}")
         }
-      }
     }
 
-    override fun onError(error: Error, subscriptionId: String, relay: Relay) {
-      //Log.e("ERROR", "Relay ${relay.url}: ${error.message}")
+    private val clientListener = object : Client.Listener() {
+        override fun onEvent(event: Event, subscriptionId: String, relay: Relay) {
+            if (subscriptionId in subscriptions.keys) {
+                val key = "$debugName $subscriptionId ${event.kind}"
+                val keyValue = eventCounter.get(key)
+                if (keyValue != null) {
+                    keyValue.counter++
+                } else {
+                    eventCounter = eventCounter + Pair(key, Counter(1))
+                }
+
+                consume(event, relay)
+            }
+        }
+
+        override fun onError(error: Error, subscriptionId: String, relay: Relay) {
+            // Log.e("ERROR", "Relay ${relay.url}: ${error.message}")
+        }
+
+        override fun onRelayStateChange(type: Relay.StateType, relay: Relay, subscriptionId: String?) {
+            // Log.d("RELAY", "Relay ${relay.url} ${when (type) {
+            //  Relay.Type.CONNECT -> "connected."
+            //  Relay.Type.DISCONNECT -> "disconnected."
+            //  Relay.Type.DISCONNECTING -> "disconnecting."
+            //  Relay.Type.EOSE -> "sent all events it had stored."
+            // }}")
+
+            if (type == Relay.StateType.EOSE && subscriptionId != null && subscriptionId in subscriptions.keys) {
+                // updates a per subscripton since date
+                subscriptions[subscriptionId]?.updateEOSE(
+                    TimeUtils.oneMinuteAgo(), // in case people's clock is slighly off.
+                    relay.url
+                )
+            }
+        }
+
+        override fun onSendResponse(eventId: String, success: Boolean, message: String, relay: Relay) {
+            if (success) {
+                markAsSeenOnRelay(eventId, relay)
+            }
+        }
+
+        override fun onAuth(relay: Relay, challenge: String) {
+            auth(relay, challenge)
+        }
+
+        override fun onPaymentRequired(
+            relay: Relay,
+            lnInvoice: String?,
+            description: String?,
+            otherOptionsUrl: String?
+        ) {
+            pay(relay, lnInvoice, description, otherOptionsUrl)
+        }
     }
 
-    override fun onRelayStateChange(type: Relay.Type, relay: Relay) {
-      //Log.d("RELAY", "Relay ${relay.url} ${when (type) {
-      //  Relay.Type.CONNECT -> "connected."
-      //  Relay.Type.DISCONNECT -> "disconnected."
-      //  Relay.Type.DISCONNECTING -> "disconnecting."
-      //  Relay.Type.EOSE -> "sent all events it had stored."
-      //}}")
+    init {
+        Log.d("Init", "${this.javaClass.simpleName} Subscribe")
+        Client.subscribe(clientListener)
+    }
 
-      /*
-      if (type == Relay.Type.EOSE) {
-        // One everything is loaded, if new users are found, update filters
+    fun destroy() {
+        stop()
+        Client.unsubscribe(clientListener)
+        scope.cancel()
+        bundler.cancel()
+    }
+
+    open fun start() {
+        println("DataSource: ${this.javaClass.simpleName} Start")
         resetFilters()
-      }*/
     }
-  }
 
-  init {
-    Client.subscribe(clientListener)
-  }
-
-  open fun start() {
-    resetFilters()
-  }
-
-  open fun stop() {
-    channels.forEach { channel ->
-      if (channel.filter != null) // if it is active, close
-        Client.close(channel.id)
-    }
-  }
-
-  fun loadTop(): List<Note> {
-    return feed().take(100)
-  }
-
-  fun requestNewChannel(): Channel {
-    val newChannel = Channel()
-    channels.add(newChannel)
-    channelIds.add(newChannel.id)
-    return newChannel
-  }
-
-  fun dismissChannel(channel: Channel) {
-    Client.close(channel.id)
-    channels.remove(channel)
-    channelIds.remove(channel.id)
-  }
-
-  fun resetFilters() {
-    // saves the channels that are currently active
-    val activeChannels = channels.filter { it.filter != null }
-    // saves the current content to only update if it changes
-    val currentFilter = activeChannels.associate { it.id to it.filter!!.toJson() }
-
-    updateChannelFilters()
-
-    // Makes sure to only send an updated filter when it actually changes.
-    channels.forEach { channel ->
-      val channelsNewFilter = channel.filter
-
-      if (channel in activeChannels) {
-        if (channelsNewFilter == null) {
-          // was active and is not active anymore, just close.
-          Client.close(channel.id)
-        } else {
-          // was active and is still active, check if it has changed.
-          if (channelsNewFilter.toJson() != currentFilter[channel.id]) {
+    open fun stop() {
+        println("DataSource: ${this.javaClass.simpleName} Stop")
+        subscriptions.values.forEach { channel ->
             Client.close(channel.id)
-            Client.sendFilter(channel.id, mutableListOf(channelsNewFilter))
-          } else {
-            // hasn't changed, does nothing.
-            Client.sendFilterOnlyIfDisconnected(channel.id, mutableListOf(channelsNewFilter))
-          }
+            channel.typedFilters = null
         }
-      } else {
-        if (channelsNewFilter == null) {
-          // was not active and is still not active, does nothing
-        } else {
-          // was not active and becomes active, sends the filter.
-          if (channelsNewFilter.toJson() != currentFilter[channel.id]) {
-            Client.sendFilter(channel.id, mutableListOf(channelsNewFilter))
-          }
-        }
-      }
     }
-  }
 
-  abstract fun updateChannelFilters()
-  abstract fun feed(): List<Note>
-}
+    fun requestNewChannel(onEOSE: ((Long, String) -> Unit)? = null): Subscription {
+        val newSubscription = Subscription(UUID.randomUUID().toString().substring(0, 4), onEOSE)
+        subscriptions = subscriptions + Pair(newSubscription.id, newSubscription)
+        return newSubscription
+    }
+
+    fun dismissChannel(subscription: Subscription) {
+        Client.close(subscription.id)
+        subscriptions = subscriptions.minus(subscription.id)
+    }
+
+    // Refreshes observers in batches.
+    private val bundler = BundledUpdate(300, Dispatchers.IO)
+
+    fun invalidateFilters() {
+        scope.launch(Dispatchers.IO) {
+            bundler.invalidate() {
+                // println("DataSource: ${this.javaClass.simpleName} InvalidateFilters")
+
+                // adds the time to perform the refresh into this delay
+                // holding off new updates in case of heavy refresh routines.
+                resetFiltersSuspend()
+            }
+        }
+    }
+
+    fun resetFilters() {
+        scope.launch(Dispatchers.IO) {
+            resetFiltersSuspend()
+        }
+    }
+
+    fun resetFiltersSuspend() {
+        checkNotInMainThread()
+
+        // saves the channels that are currently active
+        val activeSubscriptions = subscriptions.values.filter { it.typedFilters != null }
+        // saves the current content to only update if it changes
+        val currentFilters = activeSubscriptions.associate { it.id to it.toJson() }
+
+        changingFilters.getAndSet(true)
+
+        updateChannelFilters()
+
+        // Makes sure to only send an updated filter when it actually changes.
+        subscriptions.values.forEach { updatedSubscription ->
+            val updatedSubscriptionNewFilters = updatedSubscription.typedFilters
+
+            if (updatedSubscription.id in currentFilters.keys) {
+                if (updatedSubscriptionNewFilters == null) {
+                    // was active and is not active anymore, just close.
+                    Client.close(updatedSubscription.id)
+                } else {
+                    // was active and is still active, check if it has changed.
+                    if (updatedSubscription.toJson() != currentFilters[updatedSubscription.id]) {
+                        Client.close(updatedSubscription.id)
+                        Client.sendFilter(updatedSubscription.id, updatedSubscriptionNewFilters)
+                    } else {
+                        // hasn't changed, does nothing.
+                        Client.sendFilterOnlyIfDisconnected(updatedSubscription.id, updatedSubscriptionNewFilters)
+                    }
+                }
+            } else {
+                if (updatedSubscriptionNewFilters == null) {
+                    // was not active and is still not active, does nothing
+                } else {
+                    // was not active and becomes active, sends the filter.
+                    if (updatedSubscription.toJson() != currentFilters[updatedSubscription.id]) {
+                        Client.sendFilter(updatedSubscription.id, updatedSubscriptionNewFilters)
+                    }
+                }
+            }
+        }
+
+        changingFilters.getAndSet(false)
+    }
+
+    open fun consume(event: Event, relay: Relay) {
+        LocalCache.verifyAndConsume(event, relay)
+    }
+
+    open fun markAsSeenOnRelay(eventId: String, relay: Relay) {
+        LocalCache.getNoteIfExists(eventId)?.addRelay(relay)
+    }
+
+    abstract fun updateChannelFilters()
+    open fun auth(relay: Relay, challenge: String) = Unit
+    open fun pay(relay: Relay, lnInvoice: String?, description: String?, otherOptionsUrl: String?) = Unit
+}

app/src/main/java/com/vitorpamplona/amethyst/service/NostrDiscoveryDataSource.kt

@@ -0,0 +1,249 @@
+package com.vitorpamplona.amethyst.service
+
+import com.vitorpamplona.amethyst.Amethyst
+import com.vitorpamplona.amethyst.model.Account
+import com.vitorpamplona.amethyst.service.relays.EOSEAccount
+import com.vitorpamplona.amethyst.service.relays.FeedType
+import com.vitorpamplona.amethyst.service.relays.JsonFilter
+import com.vitorpamplona.amethyst.service.relays.TypedFilter
+import com.vitorpamplona.quartz.events.ChannelCreateEvent
+import com.vitorpamplona.quartz.events.ChannelMessageEvent
+import com.vitorpamplona.quartz.events.ChannelMetadataEvent
+import com.vitorpamplona.quartz.events.CommunityDefinitionEvent
+import com.vitorpamplona.quartz.events.CommunityPostApprovalEvent
+import com.vitorpamplona.quartz.events.LiveActivitiesChatMessageEvent
+import com.vitorpamplona.quartz.events.LiveActivitiesEvent
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.launch
+
+object NostrDiscoveryDataSource : NostrDataSource("DiscoveryFeed") {
+    lateinit var account: Account
+
+    val scope = Amethyst.instance.applicationIOScope
+    val latestEOSEs = EOSEAccount()
+
+    var job: Job? = null
+
+    override fun start() {
+        job?.cancel()
+        job = scope.launch(Dispatchers.IO) {
+            account.liveDiscoveryFollowLists.collect {
+                if (this@NostrDiscoveryDataSource::account.isInitialized) {
+                    invalidateFilters()
+                }
+            }
+        }
+        super.start()
+    }
+
+    override fun stop() {
+        super.stop()
+        job?.cancel()
+    }
+
+    fun createLiveStreamFilter(): List<TypedFilter> {
+        val follows = account.liveDiscoveryFollowLists.value?.users?.toList()
+
+        return listOfNotNull(
+            TypedFilter(
+                types = setOf(FeedType.GLOBAL),
+                filter = JsonFilter(
+                    authors = follows,
+                    kinds = listOf(LiveActivitiesChatMessageEvent.kind, LiveActivitiesEvent.kind),
+                    limit = 300,
+                    since = latestEOSEs.users[account.userProfile()]?.followList?.get(account.defaultDiscoveryFollowList.value)?.relayList
+                )
+            ),
+            follows?.let {
+                TypedFilter(
+                    types = setOf(FeedType.GLOBAL),
+                    filter = JsonFilter(
+                        tags = mapOf("p" to it),
+                        kinds = listOf(LiveActivitiesEvent.kind),
+                        limit = 100,
+                        since = latestEOSEs.users[account.userProfile()]?.followList?.get(account.defaultDiscoveryFollowList.value)?.relayList
+                    )
+                )
+            }
+        )
+    }
+
+    fun createPublicChatFilter(): List<TypedFilter> {
+        val follows = account.liveDiscoveryFollowLists.value?.users?.toList()
+        val followChats = account.selectedChatsFollowList().toList()
+
+        return listOf(
+            TypedFilter(
+                types = setOf(FeedType.PUBLIC_CHATS),
+                filter = JsonFilter(
+                    authors = follows,
+                    kinds = listOf(ChannelCreateEvent.kind, ChannelMetadataEvent.kind, ChannelMessageEvent.kind),
+                    limit = 300,
+                    since = latestEOSEs.users[account.userProfile()]?.followList?.get(account.defaultDiscoveryFollowList.value)?.relayList
+                )
+            ),
+            TypedFilter(
+                types = setOf(FeedType.PUBLIC_CHATS),
+                filter = JsonFilter(
+                    ids = followChats,
+                    kinds = listOf(ChannelCreateEvent.kind),
+                    limit = 300,
+                    since = latestEOSEs.users[account.userProfile()]?.followList?.get(account.defaultDiscoveryFollowList.value)?.relayList
+                )
+            )
+        )
+    }
+
+    fun createCommunitiesFilter(): TypedFilter {
+        val follows = account.liveDiscoveryFollowLists.value?.users?.toList()
+
+        return TypedFilter(
+            types = setOf(FeedType.GLOBAL),
+            filter = JsonFilter(
+                authors = follows,
+                kinds = listOf(CommunityDefinitionEvent.kind, CommunityPostApprovalEvent.kind),
+                limit = 300,
+                since = latestEOSEs.users[account.userProfile()]?.followList?.get(account.defaultDiscoveryFollowList.value)?.relayList
+            )
+        )
+    }
+
+    fun createLiveStreamTagsFilter(): TypedFilter? {
+        val hashToLoad = account.liveDiscoveryFollowLists.value?.hashtags?.toList()
+
+        if (hashToLoad.isNullOrEmpty()) return null
+
+        return TypedFilter(
+            types = setOf(FeedType.GLOBAL),
+            filter = JsonFilter(
+                kinds = listOf(LiveActivitiesChatMessageEvent.kind, LiveActivitiesEvent.kind),
+                tags = mapOf(
+                    "t" to hashToLoad.map {
+                        listOf(it, it.lowercase(), it.uppercase(), it.capitalize())
+                    }.flatten()
+                ),
+                limit = 300,
+                since = latestEOSEs.users[account.userProfile()]?.followList?.get(account.defaultDiscoveryFollowList.value)?.relayList
+            )
+        )
+    }
+
+    fun createLiveStreamGeohashesFilter(): TypedFilter? {
+        val hashToLoad = account.liveDiscoveryFollowLists.value?.geotags?.toList()
+
+        if (hashToLoad.isNullOrEmpty()) return null
+
+        return TypedFilter(
+            types = setOf(FeedType.GLOBAL),
+            filter = JsonFilter(
+                kinds = listOf(LiveActivitiesChatMessageEvent.kind, LiveActivitiesEvent.kind),
+                tags = mapOf(
+                    "g" to hashToLoad.map {
+                        listOf(it, it.lowercase(), it.uppercase(), it.capitalize())
+                    }.flatten()
+                ),
+                limit = 300,
+                since = latestEOSEs.users[account.userProfile()]?.followList?.get(account.defaultDiscoveryFollowList.value)?.relayList
+            )
+        )
+    }
+
+    fun createPublicChatsTagsFilter(): TypedFilter? {
+        val hashToLoad = account.liveDiscoveryFollowLists.value?.hashtags?.toList()
+
+        if (hashToLoad.isNullOrEmpty()) return null
+
+        return TypedFilter(
+            types = setOf(FeedType.PUBLIC_CHATS),
+            filter = JsonFilter(
+                kinds = listOf(ChannelCreateEvent.kind, ChannelMetadataEvent.kind, ChannelMessageEvent.kind),
+                tags = mapOf(
+                    "t" to hashToLoad.map {
+                        listOf(it, it.lowercase(), it.uppercase(), it.capitalize())
+                    }.flatten()
+                ),
+                limit = 300,
+                since = latestEOSEs.users[account.userProfile()]?.followList?.get(account.defaultDiscoveryFollowList.value)?.relayList
+            )
+        )
+    }
+
+    fun createPublicChatsGeohashesFilter(): TypedFilter? {
+        val hashToLoad = account.liveDiscoveryFollowLists.value?.geotags?.toList()
+
+        if (hashToLoad.isNullOrEmpty()) return null
+
+        return TypedFilter(
+            types = setOf(FeedType.PUBLIC_CHATS),
+            filter = JsonFilter(
+                kinds = listOf(ChannelCreateEvent.kind, ChannelMetadataEvent.kind, ChannelMessageEvent.kind),
+                tags = mapOf(
+                    "g" to hashToLoad.map {
+                        listOf(it, it.lowercase(), it.uppercase(), it.capitalize())
+                    }.flatten()
+                ),
+                limit = 300,
+                since = latestEOSEs.users[account.userProfile()]?.followList?.get(account.defaultDiscoveryFollowList.value)?.relayList
+            )
+        )
+    }
+
+    fun createCommunitiesTagsFilter(): TypedFilter? {
+        val hashToLoad = account.liveDiscoveryFollowLists.value?.hashtags?.toList()
+
+        if (hashToLoad.isNullOrEmpty()) return null
+
+        return TypedFilter(
+            types = setOf(FeedType.GLOBAL),
+            filter = JsonFilter(
+                kinds = listOf(CommunityDefinitionEvent.kind, CommunityPostApprovalEvent.kind),
+                tags = mapOf(
+                    "t" to hashToLoad.map {
+                        listOf(it, it.lowercase(), it.uppercase(), it.capitalize())
+                    }.flatten()
+                ),
+                limit = 300,
+                since = latestEOSEs.users[account.userProfile()]?.followList?.get(account.defaultDiscoveryFollowList.value)?.relayList
+            )
+        )
+    }
+
+    fun createCommunitiesGeohashesFilter(): TypedFilter? {
+        val hashToLoad = account.liveDiscoveryFollowLists.value?.geotags?.toList()
+
+        if (hashToLoad.isNullOrEmpty()) return null
+
+        return TypedFilter(
+            types = setOf(FeedType.GLOBAL),
+            filter = JsonFilter(
+                kinds = listOf(CommunityDefinitionEvent.kind, CommunityPostApprovalEvent.kind),
+                tags = mapOf(
+                    "g" to hashToLoad.map {
+                        listOf(it, it.lowercase(), it.uppercase(), it.capitalize())
+                    }.flatten()
+                ),
+                limit = 300,
+                since = latestEOSEs.users[account.userProfile()]?.followList?.get(account.defaultDiscoveryFollowList.value)?.relayList
+            )
+        )
+    }
+
+    val discoveryFeedChannel = requestNewChannel() { time, relayUrl ->
+        latestEOSEs.addOrUpdate(account.userProfile(), account.defaultDiscoveryFollowList.value, relayUrl, time)
+    }
+
+    override fun updateChannelFilters() {
+        discoveryFeedChannel.typedFilters = createLiveStreamFilter().plus(createPublicChatFilter()).plus(
+            listOfNotNull(
+                createLiveStreamTagsFilter(),
+                createLiveStreamGeohashesFilter(),
+                createCommunitiesFilter(),
+                createPublicChatsTagsFilter(),
+                createCommunitiesTagsFilter(),
+                createCommunitiesGeohashesFilter(),
+                createPublicChatsGeohashesFilter()
+            )
+        ).ifEmpty { null }
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/service/NostrGeohashDataSource.kt

@@ -0,0 +1,47 @@
+package com.vitorpamplona.amethyst.service
+
+import com.vitorpamplona.amethyst.service.relays.COMMON_FEED_TYPES
+import com.vitorpamplona.amethyst.service.relays.JsonFilter
+import com.vitorpamplona.amethyst.service.relays.TypedFilter
+import com.vitorpamplona.quartz.events.AudioHeaderEvent
+import com.vitorpamplona.quartz.events.AudioTrackEvent
+import com.vitorpamplona.quartz.events.ChannelMessageEvent
+import com.vitorpamplona.quartz.events.ClassifiedsEvent
+import com.vitorpamplona.quartz.events.HighlightEvent
+import com.vitorpamplona.quartz.events.LiveActivitiesChatMessageEvent
+import com.vitorpamplona.quartz.events.LongTextNoteEvent
+import com.vitorpamplona.quartz.events.PollNoteEvent
+import com.vitorpamplona.quartz.events.TextNoteEvent
+
+object NostrGeohashDataSource : NostrDataSource("SingleGeoHashFeed") {
+    private var geohashToWatch: String? = null
+
+    fun createLoadHashtagFilter(): TypedFilter? {
+        val hashToLoad = geohashToWatch ?: return null
+
+        return TypedFilter(
+            types = COMMON_FEED_TYPES,
+            filter = JsonFilter(
+                tags = mapOf(
+                    "g" to listOf(
+                        hashToLoad
+                    )
+                ),
+                kinds = listOf(TextNoteEvent.kind, ChannelMessageEvent.kind, LongTextNoteEvent.kind, PollNoteEvent.kind, LiveActivitiesChatMessageEvent.kind, ClassifiedsEvent.kind, HighlightEvent.kind, AudioTrackEvent.kind, AudioHeaderEvent.kind),
+                limit = 200
+            )
+        )
+    }
+
+    val loadGeohashChannel = requestNewChannel()
+
+    override fun updateChannelFilters() {
+        loadGeohashChannel.typedFilters = listOfNotNull(createLoadHashtagFilter()).ifEmpty { null }
+    }
+
+    fun loadHashtag(tag: String?) {
+        geohashToWatch = tag
+
+        invalidateFilters()
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/service/NostrGlobalDataSource.kt

@@ -1,47 +0,0 @@
-package com.vitorpamplona.amethyst.service
-
-import com.vitorpamplona.amethyst.model.LocalCache
-import nostr.postr.JsonFilter
-import nostr.postr.events.TextNoteEvent
-
-object NostrGlobalDataSource: NostrDataSource("GlobalFeed") {
-  val fifteenMinutes = (60*15) // 15 mins
-
-  fun createGlobalFilter() = JsonFilter(
-      kinds = listOf(TextNoteEvent.kind),
-      since = System.currentTimeMillis() / 1000 - fifteenMinutes
-    )
-
-  val globalFeedChannel = requestNewChannel()
-
-  fun equalTime(list1:Long?, list2:Long?): Boolean {
-    if (list1 == null && list2 == null) return true
-    if (list1 == null) return false
-    if (list2 == null) return false
-
-    return Math.abs(list1 - list2) < (4*fifteenMinutes)
-  }
-
-  fun equalFilters(list1:JsonFilter?, list2:JsonFilter?): Boolean {
-    if (list1 == null && list2 == null) return true
-    if (list1 == null) return false
-    if (list2 == null) return false
-
-    return equalTime(list1.since, list2.since)
-  }
-
-  override fun feed() = LocalCache.notes.values
-    .filter {
-      it.event is TextNoteEvent && (it.event as TextNoteEvent).replyTos.isEmpty()
-    }
-    .sortedBy { it.event!!.createdAt }
-    .reversed()
-
-  override fun updateChannelFilters() {
-    val newFilter = createGlobalFilter()
-
-    if (!equalFilters(newFilter, globalFeedChannel.filter)) {
-      globalFeedChannel.filter = newFilter
-    }
-  }
-}

app/src/main/java/com/vitorpamplona/amethyst/service/NostrHashtagDataSource.kt

@@ -0,0 +1,50 @@
+package com.vitorpamplona.amethyst.service
+
+import com.vitorpamplona.amethyst.service.relays.COMMON_FEED_TYPES
+import com.vitorpamplona.amethyst.service.relays.JsonFilter
+import com.vitorpamplona.amethyst.service.relays.TypedFilter
+import com.vitorpamplona.quartz.events.AudioHeaderEvent
+import com.vitorpamplona.quartz.events.AudioTrackEvent
+import com.vitorpamplona.quartz.events.ChannelMessageEvent
+import com.vitorpamplona.quartz.events.ClassifiedsEvent
+import com.vitorpamplona.quartz.events.HighlightEvent
+import com.vitorpamplona.quartz.events.LiveActivitiesChatMessageEvent
+import com.vitorpamplona.quartz.events.LongTextNoteEvent
+import com.vitorpamplona.quartz.events.PollNoteEvent
+import com.vitorpamplona.quartz.events.TextNoteEvent
+
+object NostrHashtagDataSource : NostrDataSource("SingleHashtagFeed") {
+    private var hashtagToWatch: String? = null
+
+    fun createLoadHashtagFilter(): TypedFilter? {
+        val hashToLoad = hashtagToWatch ?: return null
+
+        return TypedFilter(
+            types = COMMON_FEED_TYPES,
+            filter = JsonFilter(
+                tags = mapOf(
+                    "t" to listOf(
+                        hashToLoad,
+                        hashToLoad.lowercase(),
+                        hashToLoad.uppercase(),
+                        hashToLoad.capitalize()
+                    )
+                ),
+                kinds = listOf(TextNoteEvent.kind, ChannelMessageEvent.kind, LongTextNoteEvent.kind, PollNoteEvent.kind, LiveActivitiesChatMessageEvent.kind, ClassifiedsEvent.kind, HighlightEvent.kind, AudioTrackEvent.kind, AudioHeaderEvent.kind),
+                limit = 200
+            )
+        )
+    }
+
+    val loadHashtagChannel = requestNewChannel()
+
+    override fun updateChannelFilters() {
+        loadHashtagChannel.typedFilters = listOfNotNull(createLoadHashtagFilter()).ifEmpty { null }
+    }
+
+    fun loadHashtag(tag: String?) {
+        hashtagToWatch = tag
+
+        invalidateFilters()
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/service/NostrHomeDataSource.kt

@@ -1,80 +1,158 @@
 package com.vitorpamplona.amethyst.service
 
+import com.vitorpamplona.amethyst.Amethyst
 import com.vitorpamplona.amethyst.model.Account
-import com.vitorpamplona.amethyst.model.LocalCache
-import com.vitorpamplona.amethyst.model.Note
-import com.vitorpamplona.amethyst.model.UserState
-import com.vitorpamplona.amethyst.service.model.RepostEvent
-import nostr.postr.JsonFilter
-import nostr.postr.events.TextNoteEvent
-import nostr.postr.toHex
+import com.vitorpamplona.amethyst.service.relays.EOSEAccount
+import com.vitorpamplona.amethyst.service.relays.FeedType
+import com.vitorpamplona.amethyst.service.relays.JsonFilter
+import com.vitorpamplona.amethyst.service.relays.TypedFilter
+import com.vitorpamplona.quartz.events.AudioHeaderEvent
+import com.vitorpamplona.quartz.events.AudioTrackEvent
+import com.vitorpamplona.quartz.events.ClassifiedsEvent
+import com.vitorpamplona.quartz.events.CommunityPostApprovalEvent
+import com.vitorpamplona.quartz.events.GenericRepostEvent
+import com.vitorpamplona.quartz.events.HighlightEvent
+import com.vitorpamplona.quartz.events.LiveActivitiesChatMessageEvent
+import com.vitorpamplona.quartz.events.LiveActivitiesEvent
+import com.vitorpamplona.quartz.events.LongTextNoteEvent
+import com.vitorpamplona.quartz.events.PinListEvent
+import com.vitorpamplona.quartz.events.PollNoteEvent
+import com.vitorpamplona.quartz.events.RepostEvent
+import com.vitorpamplona.quartz.events.TextNoteEvent
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.launch
 
-object NostrHomeDataSource: NostrDataSource("HomeFeed") {
-  lateinit var account: Account
+object NostrHomeDataSource : NostrDataSource("HomeFeed") {
+    lateinit var account: Account
 
-  private val cacheListener: (UserState) -> Unit = {
-    resetFilters()
-  }
+    val scope = Amethyst.instance.applicationIOScope
+    val latestEOSEs = EOSEAccount()
 
-  override fun start() {
-    if (this::account.isInitialized)
-      account.userProfile().live.observeForever(cacheListener)
-    super.start()
-  }
+    var job: Job? = null
 
-  override fun stop() {
-    super.stop()
-    if (this::account.isInitialized)
-      account.userProfile().live.removeObserver(cacheListener)
-  }
-
-  fun createFollowAccountsFilter(): JsonFilter? {
-    val follows = account.userProfile().follows?.map {
-      it.pubkey.toHex().substring(0, 6)
+    override fun start() {
+        job?.cancel()
+        job = account.scope.launch(Dispatchers.IO) {
+            account.liveHomeFollowLists.collect {
+                if (this@NostrHomeDataSource::account.isInitialized) {
+                    invalidateFilters()
+                }
+            }
+        }
+        super.start()
     }
 
-    if (follows == null || follows.isEmpty()) return null
-
-    return JsonFilter(
-      kinds = listOf(TextNoteEvent.kind, RepostEvent.kind),
-      authors = follows,
-      since = System.currentTimeMillis() / 1000 - (60 * 60 * 24 * 1), // 24 hours
-    )
-  }
-
-  val followAccountChannel = requestNewChannel()
-
-  fun <T> equalsIgnoreOrder(list1:List<T>?, list2:List<T>?): Boolean {
-    if (list1 == null && list2 == null) return true
-    if (list1 == null) return false
-    if (list2 == null) return false
-
-    return list1.size == list2.size && list1.toSet() == list2.toSet()
-  }
-
-  fun equalAuthors(list1:JsonFilter?, list2:JsonFilter?): Boolean {
-    if (list1 == null && list2 == null) return true
-    if (list1 == null) return false
-    if (list2 == null) return false
-
-    return equalsIgnoreOrder(list1.authors, list2.authors)
-  }
-
-  override fun feed(): List<Note> {
-    val user = account.userProfile()
-    val follows = user.follows.map { it.pubkeyHex }.plus(user.pubkeyHex).toSet()
-
-    return LocalCache.notes.values
-      .filter { (it.event is TextNoteEvent || it.event is RepostEvent) && it.author?.pubkeyHex in follows }
-      .sortedBy { it.event!!.createdAt }
-      .reversed()
-  }
-
-  override fun updateChannelFilters() {
-    val newFollowAccountsFilter = createFollowAccountsFilter()
-
-    if (!equalAuthors(newFollowAccountsFilter, followAccountChannel.filter)) {
-      followAccountChannel.filter = newFollowAccountsFilter
+    override fun stop() {
+        super.stop()
+        job?.cancel()
     }
-  }
-}
+
+    fun createFollowAccountsFilter(): TypedFilter {
+        val follows = account.liveHomeFollowLists.value?.users
+        val followSet = follows?.plus(account.userProfile().pubkeyHex)?.toList()?.ifEmpty { null }
+
+        return TypedFilter(
+            types = setOf(FeedType.FOLLOWS),
+            filter = JsonFilter(
+                kinds = listOf(
+                    TextNoteEvent.kind,
+                    RepostEvent.kind,
+                    GenericRepostEvent.kind,
+                    ClassifiedsEvent.kind,
+                    LongTextNoteEvent.kind,
+                    PollNoteEvent.kind,
+                    HighlightEvent.kind,
+                    AudioTrackEvent.kind,
+                    AudioHeaderEvent.kind,
+                    PinListEvent.kind,
+                    LiveActivitiesChatMessageEvent.kind,
+                    LiveActivitiesEvent.kind
+                ),
+                authors = followSet,
+                limit = 400,
+                since = latestEOSEs.users[account.userProfile()]?.followList?.get(account.defaultHomeFollowList.value)?.relayList
+            )
+        )
+    }
+
+    fun createFollowTagsFilter(): TypedFilter? {
+        val hashToLoad = account.liveHomeFollowLists.value?.hashtags ?: return null
+
+        if (hashToLoad.isEmpty()) return null
+
+        return TypedFilter(
+            types = setOf(FeedType.FOLLOWS),
+            filter = JsonFilter(
+                kinds = listOf(TextNoteEvent.kind, LongTextNoteEvent.kind, ClassifiedsEvent.kind, HighlightEvent.kind, AudioHeaderEvent.kind, AudioTrackEvent.kind, PinListEvent.kind),
+                tags = mapOf(
+                    "t" to hashToLoad.map {
+                        listOf(it, it.lowercase(), it.uppercase(), it.capitalize())
+                    }.flatten()
+                ),
+                limit = 100,
+                since = latestEOSEs.users[account.userProfile()]?.followList?.get(account.defaultHomeFollowList.value)?.relayList
+            )
+        )
+    }
+
+    fun createFollowGeohashesFilter(): TypedFilter? {
+        val hashToLoad = account.liveHomeFollowLists.value?.geotags ?: return null
+
+        if (hashToLoad.isEmpty()) return null
+
+        return TypedFilter(
+            types = setOf(FeedType.FOLLOWS),
+            filter = JsonFilter(
+                kinds = listOf(TextNoteEvent.kind, LongTextNoteEvent.kind, ClassifiedsEvent.kind, HighlightEvent.kind, AudioHeaderEvent.kind, AudioTrackEvent.kind, PinListEvent.kind),
+                tags = mapOf(
+                    "g" to hashToLoad.map {
+                        listOf(it, it.lowercase(), it.uppercase(), it.capitalize())
+                    }.flatten()
+                ),
+                limit = 100,
+                since = latestEOSEs.users[account.userProfile()]?.followList?.get(account.defaultHomeFollowList.value)?.relayList
+            )
+        )
+    }
+
+    fun createFollowCommunitiesFilter(): TypedFilter? {
+        val communitiesToLoad = account.liveHomeFollowLists.value?.communities ?: return null
+
+        if (communitiesToLoad.isEmpty()) return null
+
+        return TypedFilter(
+            types = setOf(FeedType.FOLLOWS),
+            filter = JsonFilter(
+                kinds = listOf(
+                    TextNoteEvent.kind,
+                    LongTextNoteEvent.kind,
+                    ClassifiedsEvent.kind,
+                    HighlightEvent.kind,
+                    AudioHeaderEvent.kind,
+                    AudioTrackEvent.kind,
+                    PinListEvent.kind,
+                    CommunityPostApprovalEvent.kind
+                ),
+                tags = mapOf(
+                    "a" to communitiesToLoad.toList()
+                ),
+                limit = 100,
+                since = latestEOSEs.users[account.userProfile()]?.followList?.get(account.defaultHomeFollowList.value)?.relayList
+            )
+        )
+    }
+
+    val followAccountChannel = requestNewChannel { time, relayUrl ->
+        latestEOSEs.addOrUpdate(account.userProfile(), account.defaultHomeFollowList.value, relayUrl, time)
+    }
+
+    override fun updateChannelFilters() {
+        followAccountChannel.typedFilters = listOfNotNull(
+            createFollowAccountsFilter(),
+            createFollowCommunitiesFilter(),
+            createFollowTagsFilter(),
+            createFollowGeohashesFilter()
+        ).ifEmpty { null }
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/service/NostrLnZapPaymentResponseDataSource.kt

@@ -0,0 +1,55 @@
+package com.vitorpamplona.amethyst.service
+
+import com.vitorpamplona.amethyst.service.relays.Client
+import com.vitorpamplona.amethyst.service.relays.FeedType
+import com.vitorpamplona.amethyst.service.relays.JsonFilter
+import com.vitorpamplona.amethyst.service.relays.Relay
+import com.vitorpamplona.amethyst.service.relays.TypedFilter
+import com.vitorpamplona.quartz.events.LnZapPaymentResponseEvent
+import com.vitorpamplona.quartz.events.RelayAuthEvent
+import com.vitorpamplona.quartz.signers.NostrSigner
+
+class NostrLnZapPaymentResponseDataSource(
+    private val fromServiceHex: String,
+    private val toUserHex: String,
+    private val replyingToHex: String,
+    private val authSigner: NostrSigner
+) : NostrDataSource("LnZapPaymentResponseFeed") {
+
+    val feedTypes = setOf(FeedType.WALLET_CONNECT)
+
+    private fun createWalletConnectServiceWatcher(): TypedFilter {
+        // downloads all the reactions to a given event.
+        return TypedFilter(
+            types = feedTypes,
+            filter = JsonFilter(
+                kinds = listOf(LnZapPaymentResponseEvent.kind),
+                authors = listOf(fromServiceHex),
+                tags = mapOf(
+                    "e" to listOf(replyingToHex),
+                    "p" to listOf(toUserHex)
+                ),
+                limit = 1
+            )
+        )
+    }
+
+    val channel = requestNewChannel()
+
+    override fun updateChannelFilters() {
+        val wc = createWalletConnectServiceWatcher()
+
+        channel.typedFilters = listOfNotNull(wc).ifEmpty { null }
+    }
+
+    override fun auth(relay: Relay, challenge: String) {
+        super.auth(relay, challenge)
+
+        RelayAuthEvent.create(relay.url, challenge, authSigner) {
+            Client.send(
+                it,
+                relay.url
+            )
+        }
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/service/NostrNotificationDataSource.kt

@@ -1,48 +0,0 @@
-package com.vitorpamplona.amethyst.service
-
-import com.vitorpamplona.amethyst.model.Account
-import com.vitorpamplona.amethyst.model.Note
-import nostr.postr.JsonFilter
-
-object NostrNotificationDataSource: NostrDataSource("GlobalFeed") {
-  lateinit var account: Account
-
-  fun createGlobalFilter() = JsonFilter(
-    since = System.currentTimeMillis() / 1000 - (60 * 60 * 24 * 7), // 2 days
-    tags = mapOf("p" to listOf(account.userProfile().pubkeyHex).filterNotNull())
-  )
-
-  val notificationChannel = requestNewChannel()
-
-  fun <T> equalsIgnoreOrder(list1:List<T>?, list2:List<T>?): Boolean {
-    if (list1 == null && list2 == null) return true
-    if (list1 == null) return false
-    if (list2 == null) return false
-
-    return list1.size == list2.size && list1.toSet() == list2.toSet()
-  }
-
-  fun equalFilters(list1:JsonFilter?, list2:JsonFilter?): Boolean {
-    if (list1 == null && list2 == null) return true
-    if (list1 == null) return false
-    if (list2 == null) return false
-
-    return equalsIgnoreOrder(list1.tags?.get("p"), list2.tags?.get("p"))
-        && equalsIgnoreOrder(list1.tags?.get("e"), list2.tags?.get("e"))
-  }
-
-  override fun feed(): List<Note> {
-    return account.userProfile().taggedPosts
-      .filter { it.event != null }
-      .sortedBy { it.event!!.createdAt }
-      .reversed()
-  }
-
-  override fun updateChannelFilters() {
-    val newFilter = createGlobalFilter()
-
-    if (!equalFilters(newFilter, notificationChannel.filter)) {
-      notificationChannel.filter = newFilter
-    }
-  }
-}

app/src/main/java/com/vitorpamplona/amethyst/service/NostrSearchEventOrUserDataSource.kt

@@ -0,0 +1,132 @@
+package com.vitorpamplona.amethyst.service
+
+import com.vitorpamplona.amethyst.service.relays.COMMON_FEED_TYPES
+import com.vitorpamplona.amethyst.service.relays.FeedType
+import com.vitorpamplona.amethyst.service.relays.JsonFilter
+import com.vitorpamplona.amethyst.service.relays.TypedFilter
+import com.vitorpamplona.quartz.encoders.Hex
+import com.vitorpamplona.quartz.encoders.HexValidator
+import com.vitorpamplona.quartz.encoders.Nip19
+import com.vitorpamplona.quartz.encoders.toHexKey
+import com.vitorpamplona.quartz.events.AudioHeaderEvent
+import com.vitorpamplona.quartz.events.AudioTrackEvent
+import com.vitorpamplona.quartz.events.BadgeDefinitionEvent
+import com.vitorpamplona.quartz.events.BookmarkListEvent
+import com.vitorpamplona.quartz.events.ChannelCreateEvent
+import com.vitorpamplona.quartz.events.ChannelMetadataEvent
+import com.vitorpamplona.quartz.events.ClassifiedsEvent
+import com.vitorpamplona.quartz.events.CommunityDefinitionEvent
+import com.vitorpamplona.quartz.events.EmojiPackEvent
+import com.vitorpamplona.quartz.events.HighlightEvent
+import com.vitorpamplona.quartz.events.LiveActivitiesEvent
+import com.vitorpamplona.quartz.events.LongTextNoteEvent
+import com.vitorpamplona.quartz.events.MetadataEvent
+import com.vitorpamplona.quartz.events.NNSEvent
+import com.vitorpamplona.quartz.events.PeopleListEvent
+import com.vitorpamplona.quartz.events.PinListEvent
+import com.vitorpamplona.quartz.events.PollNoteEvent
+import com.vitorpamplona.quartz.events.TextNoteEvent
+
+object NostrSearchEventOrUserDataSource : NostrDataSource("SearchEventFeed") {
+    private var searchString: String? = null
+
+    private fun createAnythingWithIDFilter(): List<TypedFilter>? {
+        val mySearchString = searchString
+        if (mySearchString.isNullOrBlank()) {
+            return null
+        }
+
+        val hexToWatch = try {
+            val isAStraightHex = if (HexValidator.isHex(mySearchString)) {
+                Hex.decode(mySearchString).toHexKey()
+            } else {
+                null
+            }
+
+            Nip19.uriToRoute(mySearchString)?.hex ?: isAStraightHex
+        } catch (e: Exception) {
+            null
+        }
+
+        // downloads all the reactions to a given event.
+        return listOfNotNull(
+            hexToWatch?.let {
+                TypedFilter(
+                    types = COMMON_FEED_TYPES,
+                    filter = JsonFilter(
+                        ids = listOfNotNull(hexToWatch)
+                    )
+                )
+            },
+            hexToWatch?.let {
+                TypedFilter(
+                    types = COMMON_FEED_TYPES,
+                    filter = JsonFilter(
+                        kinds = listOf(MetadataEvent.kind),
+                        authors = listOfNotNull(hexToWatch)
+                    )
+                )
+            },
+            TypedFilter(
+                types = setOf(FeedType.SEARCH),
+                filter = JsonFilter(
+                    kinds = listOf(MetadataEvent.kind),
+                    search = mySearchString,
+                    limit = 100
+                )
+            ),
+            TypedFilter(
+                types = setOf(FeedType.SEARCH),
+                filter = JsonFilter(
+                    kinds = listOf(
+                        TextNoteEvent.kind, LongTextNoteEvent.kind, BadgeDefinitionEvent.kind,
+                        PeopleListEvent.kind, BookmarkListEvent.kind, AudioHeaderEvent.kind,
+                        AudioTrackEvent.kind, PinListEvent.kind, PollNoteEvent.kind,
+                        ChannelCreateEvent.kind
+                    ),
+                    search = mySearchString,
+                    limit = 100
+                )
+            ),
+            TypedFilter(
+                types = setOf(FeedType.SEARCH),
+                filter = JsonFilter(
+                    kinds = listOf(
+                        ChannelMetadataEvent.kind,
+                        ClassifiedsEvent.kind,
+                        CommunityDefinitionEvent.kind,
+                        EmojiPackEvent.kind,
+                        HighlightEvent.kind,
+                        LiveActivitiesEvent.kind,
+                        PollNoteEvent.kind,
+                        NNSEvent.kind
+                    ),
+                    search = mySearchString,
+                    limit = 100
+                )
+            )
+        )
+    }
+
+    val searchChannel = requestNewChannel()
+
+    override fun updateChannelFilters() {
+        searchChannel.typedFilters = createAnythingWithIDFilter()
+    }
+
+    fun search(searchString: String) {
+        if (this.searchString != searchString) {
+            println("DataSource: ${this.javaClass.simpleName} Search for $searchString")
+            this.searchString = searchString
+            invalidateFilters()
+        }
+    }
+
+    fun clear() {
+        if (searchString != null) {
+            println("DataSource: ${this.javaClass.simpleName} Clear")
+            searchString = null
+            invalidateFilters()
+        }
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/service/NostrSingleChannelDataSource.kt

@@ -0,0 +1,104 @@
+package com.vitorpamplona.amethyst.service
+
+import com.vitorpamplona.amethyst.model.Channel
+import com.vitorpamplona.amethyst.model.LiveActivitiesChannel
+import com.vitorpamplona.amethyst.model.PublicChatChannel
+import com.vitorpamplona.amethyst.service.relays.COMMON_FEED_TYPES
+import com.vitorpamplona.amethyst.service.relays.FeedType
+import com.vitorpamplona.amethyst.service.relays.JsonFilter
+import com.vitorpamplona.amethyst.service.relays.TypedFilter
+import com.vitorpamplona.quartz.events.ChannelCreateEvent
+import com.vitorpamplona.quartz.events.ChannelMetadataEvent
+
+object NostrSingleChannelDataSource : NostrDataSource("SingleChannelFeed") {
+    private var channelsToWatch = setOf<Channel>()
+
+    private fun createMetadataChangeFilter(): TypedFilter? {
+        val reactionsToWatch = channelsToWatch.filter { it is PublicChatChannel }.map { it.idHex }
+
+        if (reactionsToWatch.isEmpty()) {
+            return null
+        }
+
+        // downloads all the reactions to a given event.
+        return TypedFilter(
+            types = setOf(FeedType.PUBLIC_CHATS),
+            filter = JsonFilter(
+                kinds = listOf(ChannelMetadataEvent.kind),
+                tags = mapOf("e" to reactionsToWatch)
+            )
+        )
+    }
+
+    fun createLoadEventsIfNotLoadedFilter(): TypedFilter? {
+        val directEventsToLoad = channelsToWatch
+            .filter { it.notes.isEmpty() && it is PublicChatChannel }
+
+        val interestedEvents = (directEventsToLoad).map { it.idHex }.toSet()
+
+        if (interestedEvents.isEmpty()) {
+            return null
+        }
+
+        // downloads linked events to this event.
+        return TypedFilter(
+            types = COMMON_FEED_TYPES,
+            filter = JsonFilter(
+                kinds = listOf(ChannelCreateEvent.kind),
+                ids = interestedEvents.toList()
+            )
+        )
+    }
+
+    fun createLoadStreamingIfNotLoadedFilter(): List<TypedFilter>? {
+        val directEventsToLoad = channelsToWatch
+            .filterIsInstance<LiveActivitiesChannel>()
+            .filter { it.info == null }
+
+        val interestedEvents = (directEventsToLoad).map { it.idHex }.toSet()
+
+        if (interestedEvents.isEmpty()) {
+            return null
+        }
+
+        // downloads linked events to this event.
+        return directEventsToLoad.map {
+            it.address().let { aTag ->
+                TypedFilter(
+                    types = COMMON_FEED_TYPES,
+                    filter = JsonFilter(
+                        kinds = listOf(aTag.kind),
+                        tags = mapOf("d" to listOf(aTag.dTag)),
+                        authors = listOf(aTag.pubKeyHex)
+                    )
+                )
+            }
+        }
+    }
+
+    val singleChannelChannel = requestNewChannel()
+
+    override fun updateChannelFilters() {
+        val reactions = createMetadataChangeFilter()
+        val missing = createLoadEventsIfNotLoadedFilter()
+        val missingStreaming = createLoadStreamingIfNotLoadedFilter()
+
+        singleChannelChannel.typedFilters = (
+            (listOfNotNull(reactions, missing)) + (missingStreaming ?: emptyList())
+            ).ifEmpty { null }
+    }
+
+    fun add(eventId: Channel) {
+        if (eventId !in channelsToWatch) {
+            channelsToWatch = channelsToWatch.plus(eventId)
+            invalidateFilters()
+        }
+    }
+
+    fun remove(eventId: Channel) {
+        if (eventId in channelsToWatch) {
+            channelsToWatch = channelsToWatch.minus(eventId)
+            invalidateFilters()
+        }
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/service/NostrSingleEventDataSource.kt

@@ -1,70 +1,209 @@
 package com.vitorpamplona.amethyst.service
 
-import com.vitorpamplona.amethyst.model.LocalCache
+import com.vitorpamplona.amethyst.model.AddressableNote
 import com.vitorpamplona.amethyst.model.Note
-import java.util.Collections
-import nostr.postr.JsonFilter
+import com.vitorpamplona.amethyst.service.relays.COMMON_FEED_TYPES
+import com.vitorpamplona.amethyst.service.relays.EOSETime
+import com.vitorpamplona.amethyst.service.relays.JsonFilter
+import com.vitorpamplona.amethyst.service.relays.TypedFilter
+import com.vitorpamplona.quartz.events.CommunityPostApprovalEvent
+import com.vitorpamplona.quartz.events.GenericRepostEvent
+import com.vitorpamplona.quartz.events.LiveActivitiesChatMessageEvent
+import com.vitorpamplona.quartz.events.LnZapEvent
+import com.vitorpamplona.quartz.events.PollNoteEvent
+import com.vitorpamplona.quartz.events.ReactionEvent
+import com.vitorpamplona.quartz.events.ReportEvent
+import com.vitorpamplona.quartz.events.RepostEvent
+import com.vitorpamplona.quartz.events.TextNoteEvent
 
-object NostrSingleEventDataSource: NostrDataSource("SingleEventFeed") {
-  val eventsToWatch = Collections.synchronizedList(mutableListOf<String>())
+object NostrSingleEventDataSource : NostrDataSource("SingleEventFeed") {
+    private var eventsToWatch = setOf<Note>()
+    private var addressesToWatch = setOf<Note>()
 
-  fun createRepliesAndReactionsFilter(): JsonFilter? {
-    val reactionsToWatch = eventsToWatch.map { it.substring(0, 8) }
+    private fun createReactionsToWatchInAddressFilter(): List<TypedFilter>? {
+        val addressesToWatch = eventsToWatch.filter { it.address() != null } + addressesToWatch
 
-    if (reactionsToWatch.isEmpty()) {
-      return null
+        if (addressesToWatch.isEmpty()) {
+            return null
+        }
+
+        return addressesToWatch.mapNotNull {
+            it.address()?.let { aTag ->
+                TypedFilter(
+                    types = COMMON_FEED_TYPES,
+                    filter = JsonFilter(
+                        kinds = listOf(
+                            TextNoteEvent.kind,
+                            ReactionEvent.kind,
+                            RepostEvent.kind,
+                            GenericRepostEvent.kind,
+                            ReportEvent.kind,
+                            LnZapEvent.kind,
+                            PollNoteEvent.kind,
+                            CommunityPostApprovalEvent.kind,
+                            LiveActivitiesChatMessageEvent.kind
+                        ),
+                        tags = mapOf("a" to listOf(aTag.toTag())),
+                        since = it.lastReactionsDownloadTime,
+                        limit = 1000 // Max amount of "replies" to download on a specific event.
+                    )
+                )
+            }
+        }
     }
 
-    return JsonFilter(
-      tags = mapOf("e" to reactionsToWatch)
-    )
-  }
+    private fun createAddressFilter(): List<TypedFilter>? {
+        val addressesToWatch = addressesToWatch.filter { it.event == null }
 
-  fun createLoadEventsIfNotLoadedFilter(): JsonFilter? {
-    val directEventsToLoad = eventsToWatch
-      .mapNotNull { LocalCache.notes[it] }
-      .filter { it.event == null }
+        if (addressesToWatch.isEmpty()) {
+            return null
+        }
 
-    val threadingEventsToLoad = eventsToWatch
-      .mapNotNull { LocalCache.notes[it] }
-      .mapNotNull { it.replyTo }
-      .flatten()
-      .filter { it.event == null }
-
-    val interestedEvents =
-      (directEventsToLoad + threadingEventsToLoad)
-      .map { it.idHex.substring(0, 8) }
-
-    if (interestedEvents.isEmpty()) {
-      return null
+        return addressesToWatch.mapNotNull {
+            it.address()?.let { aTag ->
+                if (aTag.kind < 25000 && aTag.dTag.isBlank()) {
+                    TypedFilter(
+                        types = COMMON_FEED_TYPES,
+                        filter = JsonFilter(
+                            kinds = listOf(aTag.kind),
+                            authors = listOf(aTag.pubKeyHex),
+                            limit = 1000 // Max amount of "replies" to download on a specific event.
+                        )
+                    )
+                } else {
+                    TypedFilter(
+                        types = COMMON_FEED_TYPES,
+                        filter = JsonFilter(
+                            kinds = listOf(aTag.kind),
+                            tags = mapOf("d" to listOf(aTag.dTag)),
+                            authors = listOf(aTag.pubKeyHex),
+                            limit = 1000 // Max amount of "replies" to download on a specific event.
+                        )
+                    )
+                }
+            }
+        }
     }
 
-    return JsonFilter(
-      ids = interestedEvents
-    )
-  }
+    private fun createRepliesAndReactionsFilter(): List<TypedFilter>? {
+        val reactionsToWatch = eventsToWatch
 
-  val repliesAndReactionsChannel = requestNewChannel()
-  val loadEventsChannel = requestNewChannel()
+        if (reactionsToWatch.isEmpty()) {
+            return null
+        }
 
-  override fun feed(): List<Note> {
-    return eventsToWatch.map {
-      LocalCache.notes[it]
-    }.filterNotNull()
-  }
+        return reactionsToWatch.map {
+            TypedFilter(
+                types = COMMON_FEED_TYPES,
+                filter = JsonFilter(
+                    kinds = listOf(
+                        TextNoteEvent.kind,
+                        ReactionEvent.kind,
+                        RepostEvent.kind,
+                        GenericRepostEvent.kind,
+                        ReportEvent.kind,
+                        LnZapEvent.kind,
+                        PollNoteEvent.kind
+                    ),
+                    tags = mapOf("e" to listOf(it.idHex)),
+                    since = it.lastReactionsDownloadTime,
+                    limit = 1000 // Max amount of "replies" to download on a specific event.
+                )
+            )
+        }
+    }
 
-  override fun updateChannelFilters() {
-    repliesAndReactionsChannel.filter = createRepliesAndReactionsFilter()
-    loadEventsChannel.filter = createLoadEventsIfNotLoadedFilter()
-  }
+    fun createLoadEventsIfNotLoadedFilter(): List<TypedFilter>? {
+        val directEventsToLoad = eventsToWatch
+            .filter { it.event == null }
 
-  fun add(eventId: String) {
-    eventsToWatch.add(eventId)
-    resetFilters()
-  }
+        val threadingEventsToLoad = eventsToWatch
+            .mapNotNull { it.replyTo }
+            .flatten()
+            .filter { it !is AddressableNote && it.event == null }
 
-  fun remove(eventId: String) {
-    eventsToWatch.remove(eventId)
-    resetFilters()
-  }
-}
+        val interestedEvents =
+            (directEventsToLoad + threadingEventsToLoad)
+                .map { it.idHex }.toSet()
+
+        if (interestedEvents.isEmpty()) {
+            return null
+        }
+
+        // downloads linked events to this event.
+        return listOf(
+            TypedFilter(
+                types = COMMON_FEED_TYPES,
+                filter = JsonFilter(
+                    ids = interestedEvents.toList()
+                )
+            )
+        )
+    }
+
+    val singleEventChannel = requestNewChannel { time, relayUrl ->
+        // Ignores EOSE if it is in the middle of a filter change.
+        if (changingFilters.get()) return@requestNewChannel
+
+        checkNotInMainThread()
+
+        eventsToWatch.forEach {
+            val eose = it.lastReactionsDownloadTime[relayUrl]
+            if (eose == null) {
+                it.lastReactionsDownloadTime = it.lastReactionsDownloadTime + Pair(relayUrl, EOSETime(time))
+            } else {
+                eose.time = time
+            }
+        }
+
+        addressesToWatch.forEach {
+            val eose = it.lastReactionsDownloadTime[relayUrl]
+            if (eose == null) {
+                it.lastReactionsDownloadTime = it.lastReactionsDownloadTime + Pair(relayUrl, EOSETime(time))
+            } else {
+                eose.time = time
+            }
+        }
+
+        // Many relays operate with limits in the amount of filters.
+        // As information comes, the filters will be rotated to get more data.
+        invalidateFilters()
+    }
+
+    override fun updateChannelFilters() {
+        val reactions = createRepliesAndReactionsFilter()
+        val missing = createLoadEventsIfNotLoadedFilter()
+        val addresses = createAddressFilter()
+        val addressReactions = createReactionsToWatchInAddressFilter()
+
+        singleEventChannel.typedFilters = listOfNotNull(missing, addresses, reactions, addressReactions).flatten().ifEmpty { null }
+    }
+
+    fun add(eventId: Note) {
+        if (!eventsToWatch.contains(eventId)) {
+            eventsToWatch = eventsToWatch.plus(eventId)
+            invalidateFilters()
+        }
+    }
+
+    fun remove(eventId: Note) {
+        if (eventsToWatch.contains(eventId)) {
+            eventsToWatch = eventsToWatch.minus(eventId)
+            invalidateFilters()
+        }
+    }
+
+    fun addAddress(addressableNote: Note) {
+        if (!addressesToWatch.contains(addressableNote)) {
+            addressesToWatch = addressesToWatch.plus(addressableNote)
+            invalidateFilters()
+        }
+    }
+
+    fun removeAddress(addressableNote: Note) {
+        if (addressesToWatch.contains(addressableNote)) {
+            addressesToWatch = addressesToWatch.minus(addressableNote)
+            invalidateFilters()
+        }
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/service/NostrSingleUserDataSource.kt

@@ -1,42 +1,129 @@
 package com.vitorpamplona.amethyst.service
 
-import com.vitorpamplona.amethyst.model.LocalCache
-import com.vitorpamplona.amethyst.model.Note
-import java.util.Collections
-import nostr.postr.JsonFilter
-import nostr.postr.events.MetadataEvent
+import com.vitorpamplona.amethyst.model.User
+import com.vitorpamplona.amethyst.service.relays.COMMON_FEED_TYPES
+import com.vitorpamplona.amethyst.service.relays.EOSETime
+import com.vitorpamplona.amethyst.service.relays.JsonFilter
+import com.vitorpamplona.amethyst.service.relays.TypedFilter
+import com.vitorpamplona.quartz.events.MetadataEvent
+import com.vitorpamplona.quartz.events.ReportEvent
+import com.vitorpamplona.quartz.events.StatusEvent
 
-object NostrSingleUserDataSource: NostrDataSource("SingleUserFeed") {
-  val usersToWatch = Collections.synchronizedList(mutableListOf<String>())
+object NostrSingleUserDataSource : NostrDataSource("SingleUserFeed") {
+    var usersToWatch = setOf<User>()
 
-  fun createUserFilter(): JsonFilter? {
-    if (usersToWatch.isEmpty()) return null
+    fun createUserMetadataFilter(): List<TypedFilter>? {
+        if (usersToWatch.isEmpty()) return null
 
-    return JsonFilter(
-      kinds = listOf(MetadataEvent.kind),
-      authors = usersToWatch.map { it.substring(0, 8) }
-    )
-  }
+        val firstTimers = usersToWatch.filter { it.info?.latestMetadata == null }.map { it.pubkeyHex }
 
-  val userChannel = requestNewChannel()
+        return listOf(
+            TypedFilter(
+                types = COMMON_FEED_TYPES,
+                filter = JsonFilter(
+                    kinds = listOf(MetadataEvent.kind, StatusEvent.kind),
+                    authors = firstTimers,
+                    limit = 10 * firstTimers.size
+                )
+            )
+        )
+    }
 
-  override fun feed(): List<Note> {
-    return usersToWatch.map {
-      LocalCache.notes[it]
-    }.filterNotNull()
-  }
+    fun createUserMetadataFilter(minLatestEOSEs: Map<String, EOSETime>): TypedFilter? {
+        if (usersToWatch.isEmpty()) return null
 
-  override fun updateChannelFilters() {
-    userChannel.filter = createUserFilter()
-  }
+        return TypedFilter(
+            types = COMMON_FEED_TYPES,
+            filter = JsonFilter(
+                kinds = listOf(StatusEvent.kind),
+                authors = usersToWatch.map { it.pubkeyHex },
+                since = minLatestEOSEs
+            )
+        )
+    }
 
-  fun add(userId: String) {
-    usersToWatch.add(userId)
-    resetFilters()
-  }
+    fun createUserStatusFilter(minLatestEOSEs: Map<String, EOSETime>): TypedFilter? {
+        if (usersToWatch.isEmpty()) return null
 
-  fun remove(userId: String) {
-    usersToWatch.remove(userId)
-    resetFilters()
-  }
-}
+        return TypedFilter(
+            types = COMMON_FEED_TYPES,
+            filter = JsonFilter(
+                kinds = listOf(StatusEvent.kind),
+                authors = usersToWatch.map { it.pubkeyHex },
+                since = minLatestEOSEs
+            )
+        )
+    }
+
+    fun createUserReportFilter(minLatestEOSEs: Map<String, EOSETime>): TypedFilter? {
+        if (usersToWatch.isEmpty()) return null
+
+        return TypedFilter(
+            types = COMMON_FEED_TYPES,
+            filter = JsonFilter(
+                kinds = listOf(ReportEvent.kind),
+                tags = mapOf("p" to usersToWatch.map { it.pubkeyHex }),
+                since = minLatestEOSEs
+            )
+        )
+    }
+
+    val userChannel = requestNewChannel() { time, relayUrl ->
+        usersToWatch.forEach {
+            val eose = it.latestEOSEs[relayUrl]
+            if (eose == null) {
+                it.latestEOSEs = it.latestEOSEs + Pair(relayUrl, EOSETime(time))
+            } else {
+                eose.time = time
+            }
+        }
+    }
+
+    val userChannelFirstTimers = requestNewChannel() { time, relayUrl ->
+        // Many relays operate with limits in the amount of filters.
+        // As information comes, the filters will be rotated to get more data.
+        invalidateFilters()
+    }
+
+    override fun updateChannelFilters() {
+        val minLatestEOSEs = mutableMapOf<String, EOSETime>()
+        val neverGottenAnEOSE = mutableSetOf<String>()
+        usersToWatch.forEach {
+            if (it.latestEOSEs.isEmpty()) { // first time
+                neverGottenAnEOSE.add(it.pubkeyHex)
+            } else {
+                it.latestEOSEs.forEach {
+                    val minEose = minLatestEOSEs[it.key]
+                    if (minEose == null) {
+                        minLatestEOSEs.put(it.key, EOSETime(it.value.time))
+                    } else if (it.value.time < minEose.time) {
+                        minEose.time = it.value.time
+                    }
+                }
+            }
+        }
+
+        userChannel.typedFilters = listOfNotNull(
+            createUserMetadataFilter(minLatestEOSEs),
+            createUserStatusFilter(minLatestEOSEs),
+            createUserReportFilter(minLatestEOSEs)
+        ).ifEmpty { null }
+        userChannelFirstTimers.typedFilters = listOfNotNull(
+            createUserMetadataFilter()
+        ).flatten().ifEmpty { null }
+    }
+
+    fun add(user: User) {
+        if (!usersToWatch.contains(user)) {
+            usersToWatch = usersToWatch.plus(user)
+            invalidateFilters()
+        }
+    }
+
+    fun remove(user: User) {
+        if (usersToWatch.contains(user)) {
+            usersToWatch = usersToWatch.minus(user)
+            invalidateFilters()
+        }
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/service/NostrThreadDataSource.kt

@@ -1,82 +1,45 @@
 package com.vitorpamplona.amethyst.service
 
-import com.vitorpamplona.amethyst.model.LocalCache
-import com.vitorpamplona.amethyst.model.Note
-import java.util.Collections
-import nostr.postr.JsonFilter
+import com.vitorpamplona.amethyst.model.ThreadAssembler
+import com.vitorpamplona.amethyst.service.relays.COMMON_FEED_TYPES
+import com.vitorpamplona.amethyst.service.relays.JsonFilter
+import com.vitorpamplona.amethyst.service.relays.TypedFilter
 
-object NostrThreadDataSource: NostrDataSource("SingleThreadFeed") {
-  val eventsToWatch = Collections.synchronizedList(mutableListOf<String>())
+object NostrThreadDataSource : NostrDataSource("SingleThreadFeed") {
+    private var eventToWatch: String? = null
 
-  fun createRepliesAndReactionsFilter(): JsonFilter? {
-    val reactionsToWatch = eventsToWatch.map { it.substring(0, 8) }
+    fun createLoadEventsIfNotLoadedFilter(): TypedFilter? {
+        val threadToLoad = eventToWatch ?: return null
 
-    if (reactionsToWatch.isEmpty()) {
-      return null
+        val eventsToLoad = ThreadAssembler().findThreadFor(threadToLoad)
+            .filter { it.event == null }
+            .map { it.idHex }
+            .toSet()
+            .ifEmpty { null } ?: return null
+
+        return TypedFilter(
+            types = COMMON_FEED_TYPES,
+            filter = JsonFilter(
+                ids = eventsToLoad.map { it.substring(0, 8) }
+            )
+        )
     }
 
-    return JsonFilter(
-      tags = mapOf("e" to reactionsToWatch)
-    )
-  }
-
-  fun createLoadEventsIfNotLoadedFilter(): JsonFilter? {
-    val eventsToLoad = eventsToWatch
-      .map { LocalCache.notes[it] }
-      .filterNotNull()
-      .filter { it.event == null }
-      .map { it.idHex.substring(0, 8) }
-
-    if (eventsToLoad.isEmpty()) {
-      return null
+    val loadEventsChannel = requestNewChannel() { _, _ ->
+        // Many relays operate with limits in the amount of filters.
+        // As information comes, the filters will be rotated to get more data.
+        invalidateFilters()
     }
 
-    return JsonFilter(
-      ids = eventsToLoad
-    )
-  }
-
-  val repliesAndReactionsChannel = requestNewChannel()
-  val loadEventsChannel = requestNewChannel()
-
-  override fun feed(): List<Note> {
-    return eventsToWatch.map {
-      LocalCache.notes[it]
-    }.filterNotNull()
-  }
-
-  override fun updateChannelFilters() {
-    repliesAndReactionsChannel.filter = createRepliesAndReactionsFilter()
-    loadEventsChannel.filter = createLoadEventsIfNotLoadedFilter()
-  }
-
-  fun loadThread(noteId: String) {
-    val note = LocalCache.notes[noteId] ?: return
-
-    val thread = mutableListOf<Note>()
-    val threadSet = mutableSetOf<Note>()
-
-    val threadRoot = note.replyTo?.firstOrNull() ?: note
-
-    loadDown(threadRoot, thread, threadSet)
-
-    // Currently orders by date of each event, descending, at each level of the reply stack
-    val order = compareByDescending<Note> { it.replyLevelSignature() }
-
-    eventsToWatch.clear()
-    eventsToWatch.addAll(thread.sortedWith(order).map { it.idHex })
-
-    resetFilters()
-  }
-
-  fun loadDown(note: Note, thread: MutableList<Note>, threadSet: MutableSet<Note>) {
-    if (note !in threadSet) {
-      thread.add(note)
-      threadSet.add(note)
-
-      note.replies.forEach {
-        loadDown(it, thread, threadSet)
-      }
+    override fun updateChannelFilters() {
+        loadEventsChannel.typedFilters = listOfNotNull(createLoadEventsIfNotLoadedFilter()).ifEmpty { null }
     }
-  }
-}
+
+    fun loadThread(noteId: String?) {
+        if (eventToWatch != noteId) {
+            eventToWatch = noteId
+
+            invalidateFilters()
+        }
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/service/NostrUserProfileDataSource.kt

@@ -0,0 +1,142 @@
+package com.vitorpamplona.amethyst.service
+
+import com.vitorpamplona.amethyst.model.User
+import com.vitorpamplona.amethyst.service.relays.COMMON_FEED_TYPES
+import com.vitorpamplona.amethyst.service.relays.JsonFilter
+import com.vitorpamplona.amethyst.service.relays.TypedFilter
+import com.vitorpamplona.quartz.events.AppRecommendationEvent
+import com.vitorpamplona.quartz.events.AudioHeaderEvent
+import com.vitorpamplona.quartz.events.AudioTrackEvent
+import com.vitorpamplona.quartz.events.BadgeAwardEvent
+import com.vitorpamplona.quartz.events.BadgeProfilesEvent
+import com.vitorpamplona.quartz.events.BookmarkListEvent
+import com.vitorpamplona.quartz.events.ContactListEvent
+import com.vitorpamplona.quartz.events.GenericRepostEvent
+import com.vitorpamplona.quartz.events.HighlightEvent
+import com.vitorpamplona.quartz.events.LnZapEvent
+import com.vitorpamplona.quartz.events.LongTextNoteEvent
+import com.vitorpamplona.quartz.events.MetadataEvent
+import com.vitorpamplona.quartz.events.PeopleListEvent
+import com.vitorpamplona.quartz.events.PinListEvent
+import com.vitorpamplona.quartz.events.PollNoteEvent
+import com.vitorpamplona.quartz.events.RepostEvent
+import com.vitorpamplona.quartz.events.TextNoteEvent
+
+object NostrUserProfileDataSource : NostrDataSource("UserProfileFeed") {
+    var user: User? = null
+
+    fun loadUserProfile(user: User?) {
+        this.user = user
+    }
+
+    fun createUserInfoFilter() = user?.let {
+        TypedFilter(
+            types = COMMON_FEED_TYPES,
+            filter = JsonFilter(
+                kinds = listOf(MetadataEvent.kind),
+                authors = listOf(it.pubkeyHex),
+                limit = 1
+            )
+        )
+    }
+
+    fun createUserPostsFilter() = user?.let {
+        TypedFilter(
+            types = COMMON_FEED_TYPES,
+            filter = JsonFilter(
+                kinds = listOf(
+                    TextNoteEvent.kind,
+                    GenericRepostEvent.kind,
+                    RepostEvent.kind,
+                    LongTextNoteEvent.kind,
+                    AudioTrackEvent.kind,
+                    AudioHeaderEvent.kind,
+                    PinListEvent.kind,
+                    PollNoteEvent.kind,
+                    HighlightEvent.kind
+                ),
+                authors = listOf(it.pubkeyHex),
+                limit = 200
+            )
+        )
+    }
+
+    fun createUserReceivedZapsFilter() = user?.let {
+        TypedFilter(
+            types = COMMON_FEED_TYPES,
+            filter = JsonFilter(
+                kinds = listOf(LnZapEvent.kind),
+                tags = mapOf("p" to listOf(it.pubkeyHex))
+            )
+        )
+    }
+
+    fun createFollowFilter() = user?.let {
+        TypedFilter(
+            types = COMMON_FEED_TYPES,
+            filter = JsonFilter(
+                kinds = listOf(ContactListEvent.kind),
+                authors = listOf(it.pubkeyHex),
+                limit = 1
+            )
+        )
+    }
+
+    fun createFollowersFilter() = user?.let {
+        TypedFilter(
+            types = COMMON_FEED_TYPES,
+            filter = JsonFilter(
+                kinds = listOf(ContactListEvent.kind),
+                tags = mapOf("p" to listOf(it.pubkeyHex))
+            )
+        )
+    }
+
+    fun createAcceptedAwardsFilter() = user?.let {
+        TypedFilter(
+            types = COMMON_FEED_TYPES,
+            filter = JsonFilter(
+                kinds = listOf(BadgeProfilesEvent.kind),
+                authors = listOf(it.pubkeyHex),
+                limit = 1
+            )
+        )
+    }
+
+    fun createBookmarksFilter() = user?.let {
+        TypedFilter(
+            types = COMMON_FEED_TYPES,
+            filter = JsonFilter(
+                kinds = listOf(BookmarkListEvent.kind, PeopleListEvent.kind, AppRecommendationEvent.kind),
+                authors = listOf(it.pubkeyHex),
+                limit = 100
+            )
+        )
+    }
+
+    fun createReceivedAwardsFilter() = user?.let {
+        TypedFilter(
+            types = COMMON_FEED_TYPES,
+            filter = JsonFilter(
+                kinds = listOf(BadgeAwardEvent.kind),
+                tags = mapOf("p" to listOf(it.pubkeyHex)),
+                limit = 20
+            )
+        )
+    }
+
+    val userInfoChannel = requestNewChannel()
+
+    override fun updateChannelFilters() {
+        userInfoChannel.typedFilters = listOfNotNull(
+            createUserInfoFilter(),
+            createUserPostsFilter(),
+            createFollowFilter(),
+            createFollowersFilter(),
+            createUserReceivedZapsFilter(),
+            createAcceptedAwardsFilter(),
+            createReceivedAwardsFilter(),
+            createBookmarksFilter()
+        ).ifEmpty { null }
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/service/NostrVideoDataSource.kt

@@ -0,0 +1,105 @@
+package com.vitorpamplona.amethyst.service
+
+import com.vitorpamplona.amethyst.Amethyst
+import com.vitorpamplona.amethyst.model.Account
+import com.vitorpamplona.amethyst.service.relays.EOSEAccount
+import com.vitorpamplona.amethyst.service.relays.FeedType
+import com.vitorpamplona.amethyst.service.relays.JsonFilter
+import com.vitorpamplona.amethyst.service.relays.TypedFilter
+import com.vitorpamplona.quartz.events.FileHeaderEvent
+import com.vitorpamplona.quartz.events.FileStorageHeaderEvent
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.launch
+
+object NostrVideoDataSource : NostrDataSource("VideoFeed") {
+    lateinit var account: Account
+
+    val scope = Amethyst.instance.applicationIOScope
+    val latestEOSEs = EOSEAccount()
+
+    var job: Job? = null
+
+    override fun start() {
+        job?.cancel()
+        job = scope.launch(Dispatchers.IO) {
+            account.liveStoriesFollowLists.collect {
+                if (this@NostrVideoDataSource::account.isInitialized) {
+                    invalidateFilters()
+                }
+            }
+        }
+        super.start()
+    }
+
+    override fun stop() {
+        super.stop()
+        job?.cancel()
+    }
+
+    fun createContextualFilter(): TypedFilter {
+        val follows = account.liveStoriesFollowLists.value?.users?.toList()
+
+        return TypedFilter(
+            types = setOf(FeedType.GLOBAL),
+            filter = JsonFilter(
+                authors = follows,
+                kinds = listOf(FileHeaderEvent.kind, FileStorageHeaderEvent.kind),
+                limit = 200,
+                since = latestEOSEs.users[account.userProfile()]?.followList?.get(account.defaultStoriesFollowList.value)?.relayList
+            )
+        )
+    }
+
+    fun createFollowTagsFilter(): TypedFilter? {
+        val hashToLoad = account.liveStoriesFollowLists.value?.hashtags?.toList() ?: return null
+
+        if (hashToLoad.isEmpty()) return null
+
+        return TypedFilter(
+            types = setOf(FeedType.GLOBAL),
+            filter = JsonFilter(
+                kinds = listOf(FileHeaderEvent.kind, FileStorageHeaderEvent.kind),
+                tags = mapOf(
+                    "t" to hashToLoad.map {
+                        listOf(it, it.lowercase(), it.uppercase(), it.capitalize())
+                    }.flatten()
+                ),
+                limit = 100,
+                since = latestEOSEs.users[account.userProfile()]?.followList?.get(account.defaultStoriesFollowList.value)?.relayList
+            )
+        )
+    }
+
+    fun createFollowGeohashesFilter(): TypedFilter? {
+        val hashToLoad = account.liveStoriesFollowLists.value?.geotags?.toList() ?: return null
+
+        if (hashToLoad.isNullOrEmpty()) return null
+
+        return TypedFilter(
+            types = setOf(FeedType.GLOBAL),
+            filter = JsonFilter(
+                kinds = listOf(FileHeaderEvent.kind, FileStorageHeaderEvent.kind),
+                tags = mapOf(
+                    "g" to hashToLoad.map {
+                        listOf(it, it.lowercase(), it.uppercase(), it.capitalize())
+                    }.flatten()
+                ),
+                limit = 100,
+                since = latestEOSEs.users[account.userProfile()]?.followList?.get(account.defaultStoriesFollowList.value)?.relayList
+            )
+        )
+    }
+
+    val videoFeedChannel = requestNewChannel() { time, relayUrl ->
+        latestEOSEs.addOrUpdate(account.userProfile(), account.defaultStoriesFollowList.value, relayUrl, time)
+    }
+
+    override fun updateChannelFilters() {
+        videoFeedChannel.typedFilters = listOfNotNull(
+            createContextualFilter(),
+            createFollowTagsFilter(),
+            createFollowGeohashesFilter()
+        ).ifEmpty { null }
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/service/OnlineCheck.kt

@@ -0,0 +1,53 @@
+package com.vitorpamplona.amethyst.service
+
+import android.util.Log
+import android.util.LruCache
+import androidx.compose.runtime.Immutable
+import com.vitorpamplona.amethyst.BuildConfig
+import okhttp3.Request
+
+@Immutable
+data class OnlineCheckResult(val timeInMs: Long, val online: Boolean)
+
+object OnlineChecker {
+    val checkOnlineCache = LruCache<String, OnlineCheckResult>(100)
+    val fiveMinutes = 1000 * 60 * 5
+
+    fun isOnlineCached(url: String?): Boolean {
+        if (url.isNullOrBlank()) return false
+        if ((checkOnlineCache.get(url)?.timeInMs ?: 0) > System.currentTimeMillis() - fiveMinutes) {
+            return checkOnlineCache.get(url).online
+        }
+        return false
+    }
+
+    fun isOnline(url: String?): Boolean {
+        checkNotInMainThread()
+
+        if (url.isNullOrBlank()) return false
+        if ((checkOnlineCache.get(url)?.timeInMs ?: 0) > System.currentTimeMillis() - fiveMinutes) {
+            return checkOnlineCache.get(url).online
+        }
+
+        Log.d("OnlineChecker", "isOnline $url")
+
+        return try {
+            val request = Request.Builder()
+                .header("User-Agent", "Amethyst/${BuildConfig.VERSION_NAME}")
+                .url(url)
+                .get()
+                .build()
+
+            val result = HttpClient.getHttpClient().newCall(request).execute().use {
+                checkNotInMainThread()
+                it.isSuccessful
+            }
+            checkOnlineCache.put(url, OnlineCheckResult(System.currentTimeMillis(), result))
+            result
+        } catch (e: Exception) {
+            checkOnlineCache.put(url, OnlineCheckResult(System.currentTimeMillis(), false))
+            Log.e("LiveActivities", "Failed to check streaming url $url", e)
+            false
+        }
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/service/PackageUtils.kt

@@ -0,0 +1,17 @@
+package com.vitorpamplona.amethyst.service
+
+import android.content.Context
+
+object PackageUtils {
+    private fun isPackageInstalled(context: Context, target: String): Boolean {
+        return context.packageManager.getInstalledApplications(0).find { info -> info.packageName == target } != null
+    }
+
+    fun isOrbotInstalled(context: Context): Boolean {
+        return isPackageInstalled(context, "org.torproject.android")
+    }
+
+    fun isAmberInstalled(context: Context): Boolean {
+        return isPackageInstalled(context, "com.greenart7c3.nostrsigner")
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/service/ZapPaymentHandler.kt

@@ -0,0 +1,226 @@
+package com.vitorpamplona.amethyst.service
+
+import android.content.Context
+import androidx.compose.runtime.Immutable
+import com.vitorpamplona.amethyst.R
+import com.vitorpamplona.amethyst.model.Account
+import com.vitorpamplona.amethyst.model.LocalCache
+import com.vitorpamplona.amethyst.model.Note
+import com.vitorpamplona.amethyst.model.User
+import com.vitorpamplona.amethyst.service.lnurl.LightningAddressResolver
+import com.vitorpamplona.quartz.events.LnZapEvent
+import com.vitorpamplona.quartz.events.PayInvoiceErrorResponse
+import com.vitorpamplona.quartz.events.ZapSplitSetup
+import kotlinx.collections.immutable.ImmutableList
+import kotlinx.collections.immutable.toImmutableList
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
+import kotlin.math.round
+
+class ZapPaymentHandler(val account: Account) {
+
+    @Immutable
+    data class Payable(
+        val info: ZapSplitSetup,
+        val user: User?,
+        val amountMilliSats: Long,
+        val invoice: String
+    )
+
+    suspend fun zap(
+        note: Note,
+        amountMilliSats: Long,
+        pollOption: Int?,
+        message: String,
+        context: Context,
+        onError: (String, String) -> Unit,
+        onProgress: (percent: Float) -> Unit,
+        onPayViaIntent: (ImmutableList<Payable>) -> Unit,
+        zapType: LnZapEvent.ZapType
+    ) = withContext(Dispatchers.IO) {
+        val zapSplitSetup = note.event?.zapSplitSetup()
+
+        val zapsToSend = if (!zapSplitSetup.isNullOrEmpty()) {
+            zapSplitSetup
+        } else {
+            val lud16 = note.author?.info?.lud16?.trim() ?: note.author?.info?.lud06?.trim()
+
+            if (lud16.isNullOrBlank()) {
+                onError(
+                    context.getString(R.string.missing_lud16),
+                    context.getString(R.string.user_does_not_have_a_lightning_address_setup_to_receive_sats)
+                )
+                return@withContext
+            }
+
+            listOf(ZapSplitSetup(lud16, null, weight = 1.0, true))
+        }
+
+        val totalWeight = zapsToSend.sumOf { it.weight }
+
+        val invoicesToPayOnIntent = mutableListOf<Payable>()
+
+        zapsToSend.forEachIndexed { index, value ->
+            val outerProgressMin = index / zapsToSend.size.toFloat()
+            val outerProgressMax = (index + 1) / zapsToSend.size.toFloat()
+
+            val zapValue =
+                round((amountMilliSats * value.weight / totalWeight) / 1000f).toLong() * 1000
+
+            if (value.isLnAddress) {
+                innerZap(
+                    lud16 = value.lnAddressOrPubKeyHex,
+                    note = note,
+                    amount = zapValue,
+                    pollOption = pollOption,
+                    message = message,
+                    context = context,
+                    onError = onError,
+                    onProgress = {
+                        onProgress((it * (outerProgressMax - outerProgressMin)) + outerProgressMin)
+                    },
+                    zapType = zapType,
+                    onPayInvoiceThroughIntent = {
+                        invoicesToPayOnIntent.add(
+                            Payable(
+                                info = value,
+                                user = null,
+                                amountMilliSats = zapValue,
+                                invoice = it
+                            )
+                        )
+                    }
+                )
+            } else {
+                val user = LocalCache.getUserIfExists(value.lnAddressOrPubKeyHex)
+                val lud16 = user?.info?.lnAddress()
+
+                if (lud16 != null) {
+                    innerZap(
+                        lud16 = lud16,
+                        note = note,
+                        amount = zapValue,
+                        pollOption = pollOption,
+                        message = message,
+                        context = context,
+                        onError = onError,
+                        onProgress = {
+                            onProgress((it * (outerProgressMax - outerProgressMin)) + outerProgressMin)
+                        },
+                        zapType = zapType,
+                        overrideUser = user,
+                        onPayInvoiceThroughIntent = {
+                            invoicesToPayOnIntent.add(
+                                Payable(
+                                    info = value,
+                                    user = user,
+                                    amountMilliSats = zapValue,
+                                    invoice = it
+                                )
+                            )
+                        }
+                    )
+                } else {
+                    onError(
+                        context.getString(
+                            R.string.missing_lud16
+                        ),
+                        context.getString(
+                            R.string.user_x_does_not_have_a_lightning_address_setup_to_receive_sats,
+                            user?.toBestDisplayName() ?: value.lnAddressOrPubKeyHex
+                        )
+                    )
+                }
+            }
+        }
+
+        if (invoicesToPayOnIntent.isNotEmpty()) {
+            onPayViaIntent(invoicesToPayOnIntent.toImmutableList())
+            onProgress(1f)
+        } else {
+            launch(Dispatchers.IO) {
+                // Awaits for the event to come back to LocalCache.
+                delay(5000)
+                onProgress(1f)
+            }
+        }
+    }
+
+    private fun prepareZapRequestIfNeeded(
+        note: Note,
+        pollOption: Int?,
+        message: String,
+        zapType: LnZapEvent.ZapType,
+        overrideUser: User? = null,
+        onReady: (String?) -> Unit
+    ) {
+        if (zapType != LnZapEvent.ZapType.NONZAP) {
+            account.createZapRequestFor(note, pollOption, message, zapType, overrideUser) { zapRequest ->
+                onReady(zapRequest.toJson())
+            }
+        } else {
+            onReady(null)
+        }
+    }
+
+    private suspend fun innerZap(
+        lud16: String,
+        note: Note,
+        amount: Long,
+        pollOption: Int?,
+        message: String,
+        context: Context,
+        onError: (String, String) -> Unit,
+        onProgress: (percent: Float) -> Unit,
+        onPayInvoiceThroughIntent: (String) -> Unit,
+        zapType: LnZapEvent.ZapType,
+        overrideUser: User? = null
+    ) {
+        onProgress(0.05f)
+
+        prepareZapRequestIfNeeded(note, pollOption, message, zapType, overrideUser) { zapRequestJson ->
+            onProgress(0.10f)
+
+            LightningAddressResolver().lnAddressInvoice(
+                lud16,
+                amount,
+                message,
+                zapRequestJson,
+                onSuccess = {
+                    onProgress(0.7f)
+                    if (account.hasWalletConnectSetup()) {
+                        account.sendZapPaymentRequestFor(
+                            bolt11 = it,
+                            note,
+                            onResponse = { response ->
+                                if (response is PayInvoiceErrorResponse) {
+                                    onProgress(0.0f)
+                                    onError(
+                                        context.getString(R.string.error_dialog_pay_invoice_error),
+                                        context.getString(
+                                            R.string.wallet_connect_pay_invoice_error_error,
+                                            response.error?.message
+                                                ?: response.error?.code?.toString()
+                                                ?: "Error parsing error message"
+                                        )
+                                    )
+                                } else {
+                                    onProgress(1f)
+                                }
+                            }
+                        )
+                        onProgress(0.8f)
+                    } else {
+                        onPayInvoiceThroughIntent(it)
+                        onProgress(0f)
+                    }
+                },
+                onError = onError,
+                onProgress = onProgress,
+                context = context
+            )
+        }
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/service/lnurl/LightningAddressResolver.kt

@@ -0,0 +1,240 @@
+package com.vitorpamplona.amethyst.service.lnurl
+
+import android.content.Context
+import com.fasterxml.jackson.module.kotlin.jacksonObjectMapper
+import com.vitorpamplona.amethyst.BuildConfig
+import com.vitorpamplona.amethyst.R
+import com.vitorpamplona.amethyst.service.HttpClient
+import com.vitorpamplona.amethyst.service.checkNotInMainThread
+import com.vitorpamplona.quartz.encoders.LnInvoiceUtil
+import com.vitorpamplona.quartz.encoders.Lud06
+import com.vitorpamplona.quartz.encoders.toLnUrl
+import okhttp3.Request
+import java.math.BigDecimal
+import java.math.RoundingMode
+import java.net.URLEncoder
+
+class LightningAddressResolver() {
+    val client = HttpClient.getHttpClient()
+
+    fun assembleUrl(lnaddress: String): String? {
+        val parts = lnaddress.split("@")
+
+        if (parts.size == 2) {
+            return "https://${parts[1]}/.well-known/lnurlp/${parts[0]}"
+        }
+
+        if (lnaddress.lowercase().startsWith("lnurl")) {
+            return Lud06().toLnUrlp(lnaddress)
+        }
+
+        return null
+    }
+
+    private fun fetchLightningAddressJson(
+        lnaddress: String,
+        onSuccess: (String) -> Unit,
+        onError: (String, String) -> Unit,
+        context: Context
+    ) {
+        checkNotInMainThread()
+
+        val url = assembleUrl(lnaddress)
+
+        if (url == null) {
+            onError(
+                context.getString(R.string.error_unable_to_fetch_invoice),
+                context.getString(
+                    R.string.could_not_assemble_lnurl_from_lightning_address_check_the_user_s_setup,
+                    lnaddress
+                )
+            )
+            return
+        }
+
+        try {
+            val request: Request = Request.Builder()
+                .header("User-Agent", "Amethyst/${BuildConfig.VERSION_NAME}")
+                .url(url)
+                .build()
+
+            client.newCall(request).execute().use {
+                if (it.isSuccessful) {
+                    onSuccess(it.body.string())
+                } else {
+                    onError(
+                        context.getString(R.string.error_unable_to_fetch_invoice),
+                        context.getString(
+                            R.string.the_receiver_s_lightning_service_at_is_not_available_it_was_calculated_from_the_lightning_address_error_check_if_the_server_is_up_and_if_the_lightning_address_is_correct,
+                            url,
+                            lnaddress,
+                            it.code.toString()
+                        )
+                    )
+                }
+            }
+        } catch (e: Exception) {
+            e.printStackTrace()
+            onError(
+                context.getString(R.string.error_unable_to_fetch_invoice),
+                context.getString(
+                    R.string.could_not_resolve_check_if_you_are_connected_if_the_server_is_up_and_if_the_lightning_address_is_correct,
+                    url,
+                    lnaddress
+                )
+            )
+        }
+    }
+
+    fun fetchLightningInvoice(
+        lnCallback: String,
+        milliSats: Long,
+        message: String,
+        nostrRequest: String? = null,
+        onSuccess: (String) -> Unit,
+        onError: (String, String) -> Unit,
+        context: Context
+    ) {
+        checkNotInMainThread()
+
+        val encodedMessage = URLEncoder.encode(message, "utf-8")
+
+        val urlBinder = if (lnCallback.contains("?")) "&" else "?"
+        var url = "$lnCallback${urlBinder}amount=$milliSats&comment=$encodedMessage"
+
+        if (nostrRequest != null) {
+            val encodedNostrRequest = URLEncoder.encode(nostrRequest, "utf-8")
+            url += "&nostr=$encodedNostrRequest"
+        }
+
+        val request: Request = Request.Builder()
+            .header("User-Agent", "Amethyst/${BuildConfig.VERSION_NAME}")
+            .url(url)
+            .build()
+
+        client.newCall(request).execute().use {
+            if (it.isSuccessful) {
+                onSuccess(it.body.string())
+            } else {
+                onError(
+                    context.getString(R.string.error_unable_to_fetch_invoice),
+                    context.getString(R.string.could_not_fetch_invoice_from, lnCallback)
+                )
+            }
+        }
+    }
+
+    fun lnAddressToLnUrl(lnaddress: String, onSuccess: (String) -> Unit, onError: (String, String) -> Unit, context: Context) {
+        fetchLightningAddressJson(
+            lnaddress,
+            onSuccess = {
+                onSuccess(it.toByteArray().toLnUrl())
+            },
+            onError = onError,
+            context = context
+        )
+    }
+
+    fun lnAddressInvoice(
+        lnaddress: String,
+        milliSats: Long,
+        message: String,
+        nostrRequest: String? = null,
+        onSuccess: (String) -> Unit,
+        onError: (String, String) -> Unit,
+        onProgress: (percent: Float) -> Unit,
+        context: Context
+    ) {
+        val mapper = jacksonObjectMapper()
+
+        fetchLightningAddressJson(
+            lnaddress,
+            onSuccess = { lnAddressJson ->
+                onProgress(0.4f)
+
+                val lnurlp = try {
+                    mapper.readTree(lnAddressJson)
+                } catch (t: Throwable) {
+                    onError(
+                        context.getString(R.string.error_unable_to_fetch_invoice),
+                        context.getString(R.string.error_parsing_json_from_lightning_address_check_the_user_s_lightning_setup)
+                    )
+                    null
+                }
+
+                val callback = lnurlp?.get("callback")?.asText()
+
+                if (callback == null) {
+                    onError(
+                        context.getString(R.string.error_unable_to_fetch_invoice),
+                        context.getString(R.string.callback_url_not_found_in_the_user_s_lightning_address_server_configuration)
+                    )
+                }
+
+                val allowsNostr = lnurlp?.get("allowsNostr")?.asBoolean() ?: false
+
+                callback?.let { cb ->
+                    fetchLightningInvoice(
+                        cb,
+                        milliSats,
+                        message,
+                        if (allowsNostr) nostrRequest else null,
+                        onSuccess = {
+                            onProgress(0.6f)
+
+                            val lnInvoice = try {
+                                mapper.readTree(it)
+                            } catch (t: Throwable) {
+                                onError(
+                                    context.getString(R.string.error_unable_to_fetch_invoice),
+                                    context.getString(R.string.error_parsing_json_from_lightning_address_s_invoice_fetch_check_the_user_s_lightning_setup)
+                                )
+                                null
+                            }
+
+                            lnInvoice?.get("pr")?.asText()?.ifBlank { null }?.let { pr ->
+                                // Forces LN Invoice amount to be the requested amount.
+                                val expectedAmountInSats = BigDecimal(milliSats).divide(BigDecimal(1000), RoundingMode.HALF_UP).toLong()
+                                val invoiceAmount = LnInvoiceUtil.getAmountInSats(pr)
+                                if (invoiceAmount.toLong() == expectedAmountInSats) {
+                                    onProgress(0.7f)
+                                    onSuccess(pr)
+                                } else {
+                                    onProgress(0.0f)
+                                    onError(
+                                        context.getString(R.string.error_unable_to_fetch_invoice),
+                                        context.getString(
+                                            R.string.incorrect_invoice_amount_sats_from_it_should_have_been,
+                                            invoiceAmount.toLong().toString(),
+                                            lnaddress,
+                                            expectedAmountInSats.toString()
+                                        )
+                                    )
+                                }
+                            } ?: lnInvoice?.get("reason")?.asText()?.ifBlank { null }?.let { reason ->
+                                onProgress(0.0f)
+                                onError(
+                                    context.getString(R.string.error_unable_to_fetch_invoice),
+                                    context.getString(
+                                        R.string.unable_to_create_a_lightning_invoice_before_sending_the_zap_the_receiver_s_lightning_wallet_sent_the_following_error,
+                                        reason
+                                    )
+                                )
+                            } ?: run {
+                                onProgress(0.0f)
+                                onError(
+                                    context.getString(R.string.error_unable_to_fetch_invoice),
+                                    context.getString(R.string.unable_to_create_a_lightning_invoice_before_sending_the_zap_element_pr_not_found_in_the_resulting_json)
+                                )
+                            }
+                        },
+                        onError = onError,
+                        context
+                    )
+                }
+            },
+            onError = onError,
+            context
+        )
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/service/model/ReactionEvent.kt

@@ -1,37 +0,0 @@
-package com.vitorpamplona.amethyst.service.model
-
-import java.util.Date
-import nostr.postr.Utils
-import nostr.postr.events.Event
-import nostr.postr.toHex
-
-class ReactionEvent (
-  id: ByteArray,
-  pubKey: ByteArray,
-  createdAt: Long,
-  tags: List<List<String>>,
-  content: String,
-  sig: ByteArray
-): Event(id, pubKey, createdAt, kind, tags, content, sig) {
-
-  @Transient val originalPost: List<String>
-  @Transient val originalAuthor: List<String>
-
-  init {
-    originalPost = tags.filter { it.firstOrNull() == "e" }.mapNotNull { it.getOrNull(1) }
-    originalAuthor = tags.filter { it.firstOrNull() == "p" }.mapNotNull { it.getOrNull(1) }
-  }
-
-  companion object {
-    const val kind = 7
-
-    fun create(originalNote: Event, privateKey: ByteArray, createdAt: Long = Date().time / 1000): ReactionEvent {
-      val content = "+"
-      val pubKey = Utils.pubkeyCreate(privateKey)
-      val tags = listOf( listOf("e", originalNote.id.toHex()), listOf("p", originalNote.pubKey.toHex()))
-      val id = generateId(pubKey, createdAt, kind, tags, content)
-      val sig = Utils.sign(id, privateKey)
-      return ReactionEvent(id, pubKey, createdAt, tags, content, sig)
-    }
-  }
-}