v0.44.0

- launching navigate in a thread

PRIVACY.md

@@ -1,12 +1,12 @@
 # Amethyst Privacy Policy & Terms of Use
 
-Effective as of Jan 20, 2023.
+Effective as of Jan 20, 2023 for the distributed applications in the Play Store and the F-Droid Catalogue 
 
 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. 
 
 Data from connected accounts is only stored locally on the device when it is required for functionality and performance of Amethyst. This data is strictly confidental 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.
 
-You cannot use Amethyst 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 right, 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.
+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 right, 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.
 
 We reserve the right to modify this Privacy Policy at any time. Any modifications to this Privacy Policy will be effective upon our posting 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 indicates your acceptance of the terms of the modified Privacy Policy.
 

README.md

@@ -32,7 +32,7 @@ Or get the latest APK from the [Releases Section](https://github.com/vitorpamplo
 - [x] Relay Sets (home, dms, public chats, global)
 - [x] User/Note Tagging (NIP-08, NIP-10)
 - [x] Lightning Tips
-- [x] Zaps (NIP-57)
+- [x] Zaps (private, public, anon, non-zap) (NIP-57)
 - [x] URI Support (NIP-21)
 - [x] Event Deletion (NIP-09: like, boost, text notes and reports)
 - [x] Identity Verification (NIP-05)
@@ -41,13 +41,25 @@ Or get the latest APK from the [Releases Section](https://github.com/vitorpamplo
 - [x] Online Relay Search (NIP-50)
 - [x] Internationalization
 - [x] Badges (NIP-58)
-- [x] Hashtags
+- [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)
+- [ ] Image/Video Capture in the app
 - [ ] Local Database 
 - [ ] View Individual Reactions (Like, Boost, Zaps, Reports) per Post
 - [ ] Bookmarks, Pinned Posts, Muted Events (NIP-51)
 - [ ] Sensitive Content (NIP-36) 
 - [ ] Relay Pages (NIP-11)
-- [ ] Relay Authentication (NIP-42)
 - [ ] Generic Tags (NIP-12)
 - [ ] Proof of Work in the Phone (NIP-13, NIP-20)
 - [ ] Events with a Subject (NIP-14)
@@ -59,7 +71,7 @@ Or get the latest APK from the [Releases Section](https://github.com/vitorpamplo
 - [ ] Delegated Event Signing (NIP-26)
 - [ ] Account Creation / Backup Guidance (NIP-06)
 - [ ] Message Sent feedback (NIP-20)
-- [ ] Polls (NIP-69)
+
 
 # Development Overview
 

app/build.gradle

@@ -12,8 +12,8 @@ android {
         applicationId "com.vitorpamplona.amethyst"
         minSdk 26
         targetSdk 33
-        versionCode 121
-        versionName "0.33.2"
+        versionCode 151
+        versionName "0.44.0"
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         vectorDrawables {
@@ -86,7 +86,7 @@ android {
 
 dependencies {
     implementation 'androidx.core:core-ktx:1.10.0'
-    implementation 'androidx.activity:activity-compose:1.7.0-beta01'
+    implementation 'androidx.activity:activity-compose:1.7.0'
     implementation "androidx.compose.ui:ui:$compose_ui_version"
     implementation "androidx.compose.ui:ui-tooling-preview:$compose_ui_version"
 
@@ -108,13 +108,13 @@ dependencies {
     implementation "androidx.lifecycle:lifecycle-runtime-ktx:$lifecycle_version"
     implementation "androidx.lifecycle:lifecycle-livedata:$lifecycle_version"
 
-    implementation "net.engawapg.lib:zoomable:1.4.0"
+    implementation 'net.engawapg.lib:zoomable:1.4.2'
 
     // Biometrics
     implementation "androidx.biometric:biometric-ktx:1.2.0-alpha05"
 
     // Bitcoin secp256k1 bindings to Android
-    implementation 'fr.acinq.secp256k1:secp256k1-kmp-jni-android:0.8.0'
+    implementation 'fr.acinq.secp256k1:secp256k1-kmp-jni-android:0.9.0'
 
     // Nostr Base Protocol
     implementation('com.github.vitorpamplona.NostrPostr:nostrpostrlib:master-SNAPSHOT') {
@@ -127,17 +127,17 @@ dependencies {
     implementation 'com.squareup.okhttp3:okhttp:5.0.0-alpha.11'
 
     // Json Serialization TODO: We might need to converge between gson and Jackson (we are usin both)
-    implementation 'com.fasterxml.jackson.module:jackson-module-kotlin:2.14.2'
+    implementation 'com.fasterxml.jackson.module:jackson-module-kotlin:2.15.0'
     implementation 'com.squareup.retrofit2:converter-gson:2.9.0'
 
     // link preview
     implementation 'tw.com.oneup.www:Baha-UrlPreview:1.0.1'
 
     // Encrypted Key Storage
-    implementation 'androidx.security:security-crypto-ktx:1.1.0-alpha05'
+    implementation 'androidx.security:security-crypto-ktx:1.1.0-alpha06'
 
     // view videos
-    implementation 'com.google.android.exoplayer:exoplayer:2.18.5'
+    implementation 'com.google.android.exoplayer:exoplayer:2.18.6'
 
     // Load images from the web.
     implementation "io.coil-kt:coil-compose:$coil_version"
@@ -146,6 +146,9 @@ dependencies {
     // view svgs
     implementation "io.coil-kt:coil-svg:$coil_version"
 
+    // create blurhash
+    implementation group: 'io.trbl', name: 'blurhash', version: '1.0.0'
+
     // Rendering clickable text
     implementation "com.google.accompanist:accompanist-flowlayout:$accompanist_version"
     // Permission to upload pictures:
@@ -173,8 +176,8 @@ dependencies {
     debugImplementation 'com.squareup.leakcanary:leakcanary-android:2.10'
 
     testImplementation 'junit:junit:4.13.2'
-    testImplementation "io.mockk:mockk:1.13.4"
-    androidTestImplementation 'androidx.test.ext:junit:1.1.5'
+    testImplementation 'io.mockk:mockk:1.13.5'
+    androidTestImplementation 'androidx.test.ext:junit: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"

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

@@ -0,0 +1,113 @@
+package com.vitorpamplona.amethyst
+
+import androidx.test.ext.junit.runners.AndroidJUnit4
+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 junit.framework.TestCase.assertNotNull
+import junit.framework.TestCase.fail
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.runBlocking
+import org.junit.Test
+import org.junit.runner.RunWith
+import java.util.Base64
+
+@RunWith(AndroidJUnit4::class)
+class ImageUploadTesting {
+
+    val image = "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"
+
+    @Test()
+    fun testImgurUpload() = runBlocking {
+        val bytes = Base64.getDecoder().decode(image)
+        val inputStream = bytes.inputStream()
+
+        ImageUploader.uploadImage(
+            inputStream,
+            bytes.size.toLong(),
+            "image/gif",
+            ImgurServer(),
+            onSuccess = { url, contentType ->
+                println("Uploaded to $url")
+                assertNotNull(url)
+            },
+            onError = {
+                println("Failed to Upload")
+                fail("${it.message}")
+            }
+        )
+
+        delay(5000)
+    }
+
+    @Test()
+    fun testNostrBuildUpload() = runBlocking {
+        val bytes = Base64.getDecoder().decode(image)
+        val inputStream = bytes.inputStream()
+
+        ImageUploader.uploadImage(
+            inputStream,
+            bytes.size.toLong(),
+            "image/gif",
+            NostrBuildServer(),
+            onSuccess = { url, contentType ->
+                println("Uploaded to $url")
+                assertNotNull(url)
+            },
+            onError = {
+                println("Failed to Upload")
+                fail("${it.message}")
+            }
+        )
+
+        delay(1000)
+    }
+
+    @Test()
+    fun testNostrImgUpload() = runBlocking {
+        val bytes = Base64.getDecoder().decode(image)
+        val inputStream = bytes.inputStream()
+
+        ImageUploader.uploadImage(
+            inputStream,
+            bytes.size.toLong(),
+            "image/gif",
+            NostrImgServer(),
+            onSuccess = { url, contentType ->
+                println("Uploaded to $url")
+                assertNotNull(url)
+            },
+            onError = {
+                println("Failed to Upload")
+                fail("${it.message}")
+            }
+        )
+
+        delay(1000)
+    }
+
+    @Test()
+    fun testNostrFilesDevUpload() = runBlocking {
+        val bytes = Base64.getDecoder().decode(image)
+        val inputStream = bytes.inputStream()
+
+        ImageUploader.uploadImage(
+            inputStream,
+            bytes.size.toLong(),
+            "image/gif",
+            NostrFilesDevServer(),
+            onSuccess = { url, contentType ->
+                println("Uploaded to $url")
+                assertNotNull(url)
+            },
+            onError = {
+                println("Failed to Upload")
+                fail("${it.message}")
+            }
+        )
+
+        delay(5000)
+    }
+}

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

@@ -0,0 +1,138 @@
+package com.vitorpamplona.amethyst
+
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import com.vitorpamplona.amethyst.model.toHexKey
+import com.vitorpamplona.amethyst.service.model.Event
+import com.vitorpamplona.amethyst.service.model.LnZapEvent
+import com.vitorpamplona.amethyst.service.model.LnZapRequestEvent
+import com.vitorpamplona.amethyst.service.model.LnZapRequestEvent.Companion.createEncryptionPrivateKey
+import fr.acinq.secp256k1.Hex
+import junit.framework.TestCase.assertNotNull
+import junit.framework.TestCase.fail
+import org.junit.Test
+import org.junit.runner.RunWith
+
+@RunWith(AndroidJUnit4::class)
+class PrivateZapTests {
+
+    @Test
+    fun testPollZap() {
+        val poll = Event.Companion.fromJson(
+            """{
+  "content": "New poll \n\n #zappoll",
+  "created_at": 1682440713,
+  "id": "16291ba452bb0786a4bf5c278d38de73c96b58c056ed75c5ea466b0795197288",
+  "kind": 6969,
+  "pubkey": "f8ff11c7a7d3478355d3b4d174e5a473797a906ea4aa61aa9b6bc0652c1ea17a",
+  "sig": "ac05fa4004c3f7c42913c87b11bf9714bb61a3f0940863a6b9ff0f8105b399add72dbc09bf944c79b9a72ef009ec6905adedbd2c4c8fb3d2f57007bad8fcb279",
+  "tags": [
+    [
+      "poll_option",
+      "0",
+      "Test 1"
+    ],
+    [
+      "poll_option",
+      "1",
+      "Test 2"
+    ],
+    [
+      "value_maximum",
+      "null"
+    ],
+    [
+      "value_minimum",
+      "null"
+    ],
+    [
+      "consensus_threshold",
+      "null"
+    ],
+    [
+      "closed_at",
+      "null"
+    ]
+  ],
+  "seenOn": [
+    "wss://relay.damus.io/"
+  ]
+}
+""",
+            true
+        )
+
+        val loggedIn = Hex.decode("e8e7197ccc53c9ed4cf9b1c8dce085475fa1ffdd71f2c14e44fe23d0bdf77598")
+
+        val privateZapRequest = LnZapRequestEvent.create(
+            poll,
+            setOf("wss://relay.damus.io/"),
+            loggedIn,
+            0,
+            "",
+            LnZapEvent.ZapType.PRIVATE
+        )
+
+        val recepientPK = privateZapRequest.zappedAuthor().firstOrNull()
+        val recepientPost = privateZapRequest.zappedPost().firstOrNull()
+
+        if (recepientPK != null && recepientPost != null) {
+            val privateKey = createEncryptionPrivateKey(loggedIn.toHexKey(), recepientPost, privateZapRequest.createdAt)
+            val decodedPrivateZap =
+                privateZapRequest.getPrivateZapEvent(privateKey, recepientPK)
+
+            println(decodedPrivateZap?.toJson())
+            assertNotNull(decodedPrivateZap)
+        } else {
+            fail("Should not be null")
+        }
+    }
+
+    @Test
+    fun testKind1PrivateZap() {
+        val textNote = Event.Companion.fromJson(
+            """{
+    "content": "Testing copied author. \n\nnostr:npub1gcxzte5zlkncx26j68ez60fzkvtkm9e0vrwdcvsjakxf9mu9qewqlfnj5z",
+    "created_at": 1682369982,
+    "id": "c757e1371d715c711ec9ef9740a3df6475d64b3d0af45ffcbfca08d273baf1c1",
+    "kind": 1,
+    "pubkey": "f8ff11c7a7d3478355d3b4d174e5a473797a906ea4aa61aa9b6bc0652c1ea17a",
+    "sig": "1fb5b6fd980f4c2ef058d5f4f7b166c0e5fb21eff26fe9cacd87a9aa4feb344485841ebcc26a233bf8d6ea0a66acf0db2bfdb11ad1cb04bcea4cfa3e78c3eaf1",
+    "tags": [
+    [
+        "p",
+        "460c25e682fda7832b52d1f22d3d22b3176d972f60dcdc3212ed8c92ef85065c"
+    ]
+    ],
+    "seenOn": [
+    "wss://relay.damus.io/"
+    ]
+}
+""",
+            true
+        )
+
+        val loggedIn = Hex.decode("e8e7197ccc53c9ed4cf9b1c8dce085475fa1ffdd71f2c14e44fe23d0bdf77598")
+
+        val privateZapRequest = LnZapRequestEvent.create(
+            textNote,
+            setOf("wss://relay.damus.io/", "wss://relay.damus2.io/", "wss://relay.damus3.io/"),
+            loggedIn,
+            null,
+            "test",
+            LnZapEvent.ZapType.PRIVATE
+        )
+
+        val recepientPK = privateZapRequest.zappedAuthor().firstOrNull()
+        val recepientPost = privateZapRequest.zappedPost().firstOrNull()
+
+        if (recepientPK != null && recepientPost != null) {
+            val privateKey = createEncryptionPrivateKey(loggedIn.toHexKey(), recepientPost, privateZapRequest.createdAt)
+            val decodedPrivateZap = privateZapRequest.getPrivateZapEvent(privateKey, recepientPK)
+
+            println(decodedPrivateZap?.toJson())
+            assertNotNull(decodedPrivateZap)
+        } else {
+            fail("Should not be null")
+        }
+    }
+}

app/src/main/AndroidManifest.xml

@@ -6,8 +6,10 @@
 
     <uses-permission android:name="android.permission.INTERNET"/>
     <uses-permission android:name="android.permission.READ_MEDIA_IMAGES"/>
+    <uses-permission android:name="android.permission.READ_MEDIA_VIDEO"/>
     <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
     <uses-permission android:name="android.permission.CAMERA" />
+    <uses-permission android:name="android.permission.NFC" />
 
     <!-- Used for SDK < 29 -->
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"
@@ -18,7 +20,7 @@
         android:name=".Amethyst"
         android:dataExtractionRules="@xml/data_extraction_rules"
         android:fullBackupContent="@xml/backup_rules"
-        android:icon="@drawable/amethyst"
+        android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
         android:enableOnBackInvokedCallback="true"
         android:supportsRtl="true"
@@ -45,11 +47,18 @@
                 <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

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

@@ -6,11 +6,15 @@ import android.content.SharedPreferences
 import com.google.gson.GsonBuilder
 import com.google.gson.reflect.TypeToken
 import com.vitorpamplona.amethyst.model.Account
+import com.vitorpamplona.amethyst.model.GLOBAL_FOLLOWS
+import com.vitorpamplona.amethyst.model.KIND3_FOLLOWS
 import com.vitorpamplona.amethyst.model.RelaySetupInfo
-import com.vitorpamplona.amethyst.model.toByteArray
+import com.vitorpamplona.amethyst.model.hexToByteArray
 import com.vitorpamplona.amethyst.service.model.ContactListEvent
 import com.vitorpamplona.amethyst.service.model.Event
 import com.vitorpamplona.amethyst.service.model.Event.Companion.getRefinedEvent
+import com.vitorpamplona.amethyst.service.model.LnZapEvent
+import com.vitorpamplona.amethyst.ui.actions.ServersAvailable
 import com.vitorpamplona.amethyst.ui.note.Nip47URI
 import fr.acinq.secp256k1.Hex
 import nostr.postr.Persona
@@ -42,6 +46,11 @@ private object PrefKeys {
     const val LANGUAGE_PREFS = "languagePreferences"
     const val TRANSLATE_TO = "translateTo"
     const val ZAP_AMOUNTS = "zapAmounts"
+    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 ZAP_PAYMENT_REQUEST_SERVER = "zapPaymentServer"
     const val LATEST_CONTACT_LIST = "latestContactList"
     const val HIDE_DELETE_REQUEST_DIALOG = "hide_delete_request_dialog"
@@ -191,6 +200,11 @@ object LocalPreferences {
             putString(PrefKeys.LANGUAGE_PREFS, gson.toJson(account.languagePreferences))
             putString(PrefKeys.TRANSLATE_TO, account.translateTo)
             putString(PrefKeys.ZAP_AMOUNTS, gson.toJson(account.zapAmountChoices))
+            putString(PrefKeys.DEFAULT_ZAPTYPE, gson.toJson(account.defaultZapType))
+            putString(PrefKeys.DEFAULT_FILE_SERVER, gson.toJson(account.defaultFileServer))
+            putString(PrefKeys.DEFAULT_HOME_FOLLOW_LIST, account.defaultHomeFollowList)
+            putString(PrefKeys.DEFAULT_STORIES_FOLLOW_LIST, account.defaultStoriesFollowList)
+            putString(PrefKeys.DEFAULT_NOTIFICATION_FOLLOW_LIST, account.defaultNotificationFollowList)
             putString(PrefKeys.ZAP_PAYMENT_REQUEST_SERVER, gson.toJson(account.zapPaymentRequest))
             putString(PrefKeys.LATEST_CONTACT_LIST, Event.gson.toJson(account.backupContactList))
             putBoolean(PrefKeys.HIDE_DELETE_REQUEST_DIALOG, account.hideDeleteRequestDialog)
@@ -211,12 +225,25 @@ object LocalPreferences {
 
             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 zapAmountChoices = gson.fromJson(
                 getString(PrefKeys.ZAP_AMOUNTS, "[]"),
                 object : TypeToken<List<Long>>() {}.type
             ) ?: listOf(500L, 1000L, 5000L)
 
+            val defaultZapType = gson.fromJson(
+                getString(PrefKeys.DEFAULT_ZAPTYPE, "PUBLIC"),
+                object : TypeToken<LnZapEvent.ZapType>() {}.type
+            ) ?: LnZapEvent.ZapType.PUBLIC
+
+            val defaultFileServer = gson.fromJson(
+                getString(PrefKeys.DEFAULT_FILE_SERVER, "IMGUR"),
+                object : TypeToken<ServersAvailable>() {}.type
+            ) ?: ServersAvailable.IMGUR
+
             val zapPaymentRequestServer = try {
                 getString(PrefKeys.ZAP_PAYMENT_REQUEST_SERVER, null)?.let {
                     gson.fromJson(it, Nip47URI::class.java)
@@ -252,7 +279,7 @@ object LocalPreferences {
             val hideBlockAlertDialog = getBoolean(PrefKeys.HIDE_BLOCK_ALERT_DIALOG, false)
 
             val a = Account(
-                Persona(privKey = privKey?.toByteArray(), pubKey = pubKey.toByteArray()),
+                Persona(privKey = privKey?.hexToByteArray(), pubKey = pubKey.hexToByteArray()),
                 followingChannels,
                 hiddenUsers,
                 localRelays,
@@ -260,6 +287,11 @@ object LocalPreferences {
                 languagePreferences,
                 translateTo,
                 zapAmountChoices,
+                defaultZapType,
+                defaultFileServer,
+                defaultHomeFollowList,
+                defaultStoriesFollowList,
+                defaultNotificationFollowList,
                 zapPaymentRequestServer,
                 hideDeleteRequestDialog,
                 hideBlockAlertDialog,

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

@@ -38,19 +38,15 @@ object NotificationCache {
 
 class NotificationLiveData(val cache: NotificationCache) : LiveData<NotificationState>(NotificationState(cache)) {
     // Refreshes observers in batches.
-    private val bundler = BundledUpdate(300, Dispatchers.Main) {
+    private val bundler = BundledUpdate(300, Dispatchers.IO) {
         if (hasActiveObservers()) {
-            refresh()
+            postValue(NotificationState(cache))
         }
     }
 
     fun invalidateData() {
         bundler.invalidate()
     }
-
-    fun refresh() {
-        postValue(NotificationState(cache))
-    }
 }
 
 class NotificationState(val cache: NotificationCache)

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

@@ -12,6 +12,7 @@ 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.amethyst.service.relays.Constants
 
@@ -33,10 +34,11 @@ object ServiceManager {
             NostrAccountDataSource.account = myAccount
             NostrHomeDataSource.account = myAccount
             NostrChatroomListDataSource.account = myAccount
+            NostrVideoDataSource.account = myAccount
 
             // Notification Elements
-            NostrAccountDataSource.start()
             NostrHomeDataSource.start()
+            NostrAccountDataSource.start()
             NostrChatroomListDataSource.start()
 
             // More Info Data Sources
@@ -61,6 +63,7 @@ object ServiceManager {
         NostrSingleUserDataSource.stop()
         NostrThreadDataSource.stop()
         NostrUserProfileDataSource.stop()
+        NostrVideoDataSource.stop()
 
         Client.disconnect()
     }

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

@@ -1,14 +1,18 @@
 package com.vitorpamplona.amethyst.model
 
 import android.content.res.Resources
+import android.util.Log
 import androidx.core.os.ConfigurationCompat
 import androidx.lifecycle.LiveData
+import com.vitorpamplona.amethyst.service.FileHeader
+import com.vitorpamplona.amethyst.service.NostrLnZapPaymentResponseDataSource
 import com.vitorpamplona.amethyst.service.model.*
 import com.vitorpamplona.amethyst.service.relays.Client
 import com.vitorpamplona.amethyst.service.relays.Constants
 import com.vitorpamplona.amethyst.service.relays.FeedType
 import com.vitorpamplona.amethyst.service.relays.Relay
 import com.vitorpamplona.amethyst.service.relays.RelayPool
+import com.vitorpamplona.amethyst.ui.actions.ServersAvailable
 import com.vitorpamplona.amethyst.ui.components.BundledUpdate
 import com.vitorpamplona.amethyst.ui.note.Nip47URI
 import kotlinx.coroutines.DelicateCoroutinesApi
@@ -16,6 +20,8 @@ import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.GlobalScope
 import kotlinx.coroutines.launch
 import nostr.postr.Persona
+import nostr.postr.Utils
+import java.math.BigDecimal
 import java.util.Locale
 
 val DefaultChannels = setOf(
@@ -32,6 +38,9 @@ fun getLanguagesSpokenByUser(): Set<String> {
     return codedList
 }
 
+val GLOBAL_FOLLOWS = " Global "
+val KIND3_FOLLOWS = " All Follows "
+
 @OptIn(DelicateCoroutinesApi::class)
 class Account(
     val loggedIn: Persona,
@@ -42,6 +51,11 @@ class Account(
     var languagePreferences: Map<String, String> = mapOf(),
     var translateTo: String = Locale.getDefault().language,
     var zapAmountChoices: List<Long> = listOf(500L, 1000L, 5000L),
+    var defaultZapType: LnZapEvent.ZapType = LnZapEvent.ZapType.PRIVATE,
+    var defaultFileServer: ServersAvailable = ServersAvailable.IMGUR,
+    var defaultHomeFollowList: String = KIND3_FOLLOWS,
+    var defaultStoriesFollowList: String = GLOBAL_FOLLOWS,
+    var defaultNotificationFollowList: String = GLOBAL_FOLLOWS,
     var zapPaymentRequest: Nip47URI? = null,
     var hideDeleteRequestDialog: Boolean = false,
     var hideBlockAlertDialog: Boolean = false,
@@ -164,13 +178,56 @@ class Account(
         return zapPaymentRequest != null
     }
 
-    fun sendZapPaymentRequestFor(lnInvoice: String) {
+    fun isNIP47Author(pubkeyHex: String?): Boolean {
+        val privKey = zapPaymentRequest?.secret?.hexToByteArray() ?: loggedIn.privKey
+
+        if (privKey == null) return false
+
+        val pubKey = Utils.pubkeyCreate(privKey).toHexKey()
+        return (pubKey == pubkeyHex)
+    }
+
+    fun decryptZapPaymentResponseEvent(zapResponseEvent: LnZapPaymentResponseEvent): Response? {
+        val myNip47 = zapPaymentRequest ?: return null
+
+        val privKey = myNip47.secret?.hexToByteArray() ?: loggedIn.privKey
+        val pubKey = myNip47.pubKeyHex.hexToByteArray()
+
+        if (privKey == null) return null
+
+        return zapResponseEvent.response(privKey, pubKey)
+    }
+
+    fun calculateIfNoteWasZappedByAccount(zappedNote: Note?): Boolean {
+        return zappedNote?.isZappedBy(userProfile(), this) == true
+    }
+
+    fun calculateZappedAmount(zappedNote: Note?): BigDecimal {
+        val privKey = zapPaymentRequest?.secret?.hexToByteArray() ?: loggedIn.privKey
+        val pubKey = zapPaymentRequest?.pubKeyHex?.hexToByteArray()
+        return zappedNote?.zappedAmount(privKey, pubKey) ?: BigDecimal.ZERO
+    }
+
+    fun sendZapPaymentRequestFor(bolt11: String, zappedNote: Note?, onResponse: (Response?) -> Unit) {
         if (!isWriteable()) return
 
-        zapPaymentRequest?.let {
-            val event = LnZapPaymentRequestEvent.create(lnInvoice, it.pubKeyHex, it.secret?.toByteArray() ?: loggedIn.privKey!!)
+        zapPaymentRequest?.let { nip47 ->
+            val event = LnZapPaymentRequestEvent.create(bolt11, nip47.pubKeyHex, nip47.secret?.hexToByteArray() ?: loggedIn.privKey!!)
 
-            Client.send(event, it.relayUri)
+            val wcListener = NostrLnZapPaymentResponseDataSource(nip47.pubKeyHex, event.pubKey, event.id)
+            wcListener.start()
+
+            LocalCache.consume(event, zappedNote) {
+                // After the response is received.
+                val privKey = nip47.secret?.hexToByteArray()
+                if (privKey != null) {
+                    onResponse(it.response(privKey, nip47.pubKeyHex.hexToByteArray()))
+                }
+            }
+
+            Client.send(event, nip47.relayUri, wcListener.feedTypes) {
+                wcListener.destroy()
+            }
         }
     }
 
@@ -357,7 +414,62 @@ class Account(
         }
     }
 
-    fun sendPost(message: String, replyTo: List<Note>?, mentions: List<User>?, tags: List<String>? = null) {
+    fun createNip95(byteArray: ByteArray, headerInfo: FileHeader): Pair<FileStorageEvent, FileStorageHeaderEvent>? {
+        if (!isWriteable()) return null
+
+        val data = FileStorageEvent.create(
+            mimeType = headerInfo.mimeType ?: "",
+            data = byteArray,
+            privateKey = loggedIn.privKey!!
+        )
+
+        val signedEvent = FileStorageHeaderEvent.create(
+            data,
+            mimeType = headerInfo.mimeType,
+            hash = headerInfo.hash,
+            size = headerInfo.size.toString(),
+            dimensions = headerInfo.dim,
+            blurhash = headerInfo.blurHash,
+            description = headerInfo.description,
+            privateKey = loggedIn.privKey!!
+        )
+
+        return Pair(data, signedEvent)
+    }
+
+    fun sendNip95(data: FileStorageEvent, signedEvent: FileStorageHeaderEvent): Note? {
+        if (!isWriteable()) return null
+
+        Client.send(data)
+        LocalCache.consume(data, null)
+
+        Client.send(signedEvent)
+        LocalCache.consume(signedEvent, null)
+
+        return LocalCache.notes[signedEvent.id]
+    }
+
+    fun sendHeader(headerInfo: FileHeader): Note? {
+        if (!isWriteable()) return null
+
+        val signedEvent = FileHeaderEvent.create(
+            url = headerInfo.url,
+            mimeType = headerInfo.mimeType,
+            hash = headerInfo.hash,
+            size = headerInfo.size.toString(),
+            dimensions = headerInfo.dim,
+            blurhash = headerInfo.blurHash,
+            description = headerInfo.description,
+            privateKey = loggedIn.privKey!!
+        )
+
+        Client.send(signedEvent)
+        LocalCache.consume(signedEvent, null)
+
+        return LocalCache.notes[signedEvent.id]
+    }
+
+    fun sendPost(message: String, replyTo: List<Note>?, mentions: List<User>?, tags: List<String>? = null, zapReceiver: String? = null) {
         if (!isWriteable()) return
 
         val repliesToHex = replyTo?.filter { it.address() == null }?.map { it.idHex }
@@ -370,6 +482,7 @@ class Account(
             mentions = mentionsHex,
             addresses = addresses,
             extraTags = tags,
+            zapReceiver = zapReceiver,
             privateKey = loggedIn.privKey!!
         )
 
@@ -385,7 +498,8 @@ class Account(
         valueMaximum: Int?,
         valueMinimum: Int?,
         consensusThreshold: Int?,
-        closedAt: Int?
+        closedAt: Int?,
+        zapReceiver: String? = null
     ) {
         if (!isWriteable()) return
 
@@ -403,14 +517,15 @@ class Account(
             valueMaximum = valueMaximum,
             valueMinimum = valueMinimum,
             consensusThreshold = consensusThreshold,
-            closedAt = closedAt
+            closedAt = closedAt,
+            zapReceiver = zapReceiver
         )
         // println("Sending new PollNoteEvent: %s".format(signedEvent.toJson()))
         Client.send(signedEvent)
         LocalCache.consume(signedEvent)
     }
 
-    fun sendChannelMessage(message: String, toChannel: String, replyTo: List<Note>?, mentions: List<User>?) {
+    fun sendChannelMessage(message: String, toChannel: String, replyTo: List<Note>?, mentions: List<User>?, zapReceiver: String? = null) {
         if (!isWriteable()) return
 
         // val repliesToHex = listOfNotNull(replyingTo?.idHex).ifEmpty { null }
@@ -422,13 +537,14 @@ class Account(
             channel = toChannel,
             replyTos = repliesToHex,
             mentions = mentionsHex,
+            zapReceiver = zapReceiver,
             privateKey = loggedIn.privKey!!
         )
         Client.send(signedEvent)
         LocalCache.consume(signedEvent, null)
     }
 
-    fun sendPrivateMessage(message: String, toUser: String, replyingTo: Note? = null, mentions: List<User>?) {
+    fun sendPrivateMessage(message: String, toUser: String, replyingTo: Note? = null, mentions: List<User>?, zapReceiver: String? = null) {
         if (!isWriteable()) return
         val user = LocalCache.users[toUser] ?: return
 
@@ -441,6 +557,7 @@ class Account(
             msg = message,
             replyTos = repliesToHex,
             mentions = mentionsHex,
+            zapReceiver = zapReceiver,
             privateKey = loggedIn.privKey!!,
             advertiseNip18 = false
         )
@@ -534,6 +651,12 @@ class Account(
         LocalCache.consume(event)
     }
 
+    fun createAuthEvent(relay: Relay, challenge: String): RelayAuthEvent? {
+        if (!isWriteable()) return null
+
+        return RelayAuthEvent.create(relay.url, challenge, loggedIn.privKey!!)
+    }
+
     fun removePublicBookmark(note: Note) {
         if (!isWriteable()) return
 
@@ -605,6 +728,36 @@ class Account(
         saveable.invalidateData()
     }
 
+    fun changeDefaultZapType(zapType: LnZapEvent.ZapType) {
+        defaultZapType = zapType
+        live.invalidateData()
+        saveable.invalidateData()
+    }
+
+    fun changeDefaultFileServer(server: ServersAvailable) {
+        defaultFileServer = server
+        live.invalidateData()
+        saveable.invalidateData()
+    }
+
+    fun changeDefaultHomeFollowList(name: String) {
+        defaultHomeFollowList = name
+        live.invalidateData()
+        saveable.invalidateData()
+    }
+
+    fun changeDefaultStoriesFollowList(name: String) {
+        defaultStoriesFollowList = name
+        live.invalidateData()
+        saveable.invalidateData()
+    }
+
+    fun changeDefaultNotificationFollowList(name: String) {
+        defaultNotificationFollowList = name
+        live.invalidateData()
+        saveable.invalidateData()
+    }
+
     fun changeZapAmounts(newAmounts: List<Long>) {
         zapAmountChoices = newAmounts
         live.invalidateData()
@@ -617,6 +770,37 @@ class Account(
         saveable.invalidateData()
     }
 
+    fun selectedUsersFollowList(listName: String?): Set<String>? {
+        if (listName == GLOBAL_FOLLOWS) return null
+        if (listName == KIND3_FOLLOWS) return userProfile().cachedFollowingKeySet()
+
+        val privKey = loggedIn.privKey
+
+        return if (listName != null) {
+            val aTag = ATag(PeopleListEvent.kind, userProfile().pubkeyHex, listName, null).toTag()
+            val list = LocalCache.addressables[aTag]
+            if (list != null) {
+                val publicHexList = (list.event as? PeopleListEvent)?.bookmarkedPeople() ?: emptySet()
+                val privateHexList = privKey?.let {
+                    (list.event as? PeopleListEvent)?.privateTaggedUsers(it)
+                } ?: emptySet()
+
+                (publicHexList + privateHexList).toSet()
+            } else {
+                emptySet()
+            }
+        } else {
+            emptySet()
+        }
+    }
+
+    fun selectedTagsFollowList(listName: String?): Set<String>? {
+        if (listName == GLOBAL_FOLLOWS) return null
+        if (listName == KIND3_FOLLOWS) return userProfile().cachedFollowingTagSet()
+
+        return emptySet()
+    }
+
     fun sendChangeChannel(name: String, about: String, picture: String, channel: Channel) {
         if (!isWriteable()) return
 
@@ -643,18 +827,78 @@ class Account(
         return if (event is PrivateDmEvent && loggedIn.privKey != null) {
             var pubkeyToUse = event.pubKey
 
-            val recepientPK = event.recipientPubKey()
+            val recepientPK = event.verifiedRecipientPubKey()
 
             if (note.author == userProfile() && recepientPK != null) {
                 pubkeyToUse = recepientPK
             }
 
-            event.plainContent(loggedIn.privKey!!, pubkeyToUse.toByteArray())
+            event.plainContent(loggedIn.privKey!!, pubkeyToUse.hexToByteArray())
+        } else if (event is LnZapRequestEvent && loggedIn.privKey != null) {
+            decryptZapContentAuthor(note)?.content()
         } else {
             event?.content()
         }
     }
 
+    fun decryptZapContentAuthor(note: Note): Event? {
+        val event = note.event
+        val loggedInPrivateKey = loggedIn.privKey
+
+        return if (event is LnZapRequestEvent && loggedInPrivateKey != null && event.isPrivateZap()) {
+            val recipientPK = event.zappedAuthor().firstOrNull()
+            val recipientPost = event.zappedPost().firstOrNull()
+
+            if (recipientPK == userProfile().pubkeyHex) {
+                // if the receiver is logged in, these are the params.
+                val privateKeyToUse = loggedInPrivateKey
+                val pubkeyToUse = event.pubKey
+
+                event.getPrivateZapEvent(privateKeyToUse, pubkeyToUse)
+            } else {
+                // if the sender is logged in, these are the params
+                val altPubkeyToUse = recipientPK
+                val altPrivateKeyToUse = if (recipientPost != null) {
+                    LnZapRequestEvent.createEncryptionPrivateKey(
+                        loggedInPrivateKey.toHexKey(),
+                        recipientPost,
+                        event.createdAt
+                    )
+                } else if (recipientPK != null) {
+                    LnZapRequestEvent.createEncryptionPrivateKey(
+                        loggedInPrivateKey.toHexKey(),
+                        recipientPK,
+                        event.createdAt
+                    )
+                } else {
+                    null
+                }
+
+                if (altPrivateKeyToUse != null && altPubkeyToUse != null) {
+                    val altPubKeyFromPrivate = Utils.pubkeyCreate(altPrivateKeyToUse).toHexKey()
+
+                    if (altPubKeyFromPrivate == event.pubKey) {
+                        val result = event.getPrivateZapEvent(altPrivateKeyToUse, altPubkeyToUse)
+
+                        if (result == null) {
+                            Log.w(
+                                "Private ZAP Decrypt",
+                                "Fail to decrypt Zap from ${note.author?.toBestDisplayName()} ${note.idNote()}"
+                            )
+                        }
+                        result
+                    } else {
+                        null
+                    }
+                } else {
+                    null
+                }
+            }
+        } else {
+            null
+        }
+    }
+
     fun addDontTranslateFrom(languageCode: String) {
         dontTranslateFrom = dontTranslateFrom.plus(languageCode)
         liveLanguages.invalidateData()

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

@@ -55,19 +55,15 @@ class AntiSpamFilter {
 class AntiSpamLiveData(val cache: AntiSpamFilter) : LiveData<AntiSpamState>(AntiSpamState(cache)) {
 
     // Refreshes observers in batches.
-    private val bundler = BundledUpdate(300, Dispatchers.Main) {
+    private val bundler = BundledUpdate(300, Dispatchers.IO) {
         if (hasActiveObservers()) {
-            refresh()
+            postValue(AntiSpamState(cache))
         }
     }
 
     fun invalidateData() {
         bundler.invalidate()
     }
-
-    private fun refresh() {
-        postValue(AntiSpamState(cache))
-    }
 }
 
 class AntiSpamState(val cache: AntiSpamFilter)

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

@@ -74,9 +74,9 @@ class Channel(val idHex: String) {
 
 class ChannelLiveData(val channel: Channel) : LiveData<ChannelState>(ChannelState(channel)) {
     // Refreshes observers in batches.
-    private val bundler = BundledUpdate(300, Dispatchers.Main) {
+    private val bundler = BundledUpdate(300, Dispatchers.IO) {
         if (hasActiveObservers()) {
-            refresh()
+            postValue(ChannelState(channel))
         }
     }
 
@@ -84,10 +84,6 @@ class ChannelLiveData(val channel: Channel) : LiveData<ChannelState>(ChannelStat
         bundler.invalidate()
     }
 
-    private fun refresh() {
-        postValue(ChannelState(channel))
-    }
-
     override fun onActive() {
         super.onActive()
         NostrSingleChannelDataSource.add(channel.idHex)

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

@@ -6,15 +6,16 @@ import androidx.compose.ui.unit.dp
 import com.vitorpamplona.amethyst.R
 fun checkForHashtagWithIcon(tag: String): HashtagIcon? {
     return when (tag.lowercase()) {
-        "bitcoin", "btc" -> HashtagIcon(R.drawable.ht_btc, "Bitcoin", Color.Unspecified, Modifier.padding(2.dp, 2.dp, 0.dp, 0.dp))
-        "nostr", "nostrich", "nostriches", "nostrichs" -> HashtagIcon(R.drawable.ht_nostr, "Nostr", Color.Unspecified, Modifier.padding(1.dp, 2.dp, 0.dp, 0.dp))
+        "bitcoin", "btc", "timechain" -> HashtagIcon(R.drawable.ht_btc, "Bitcoin", Color.Unspecified, Modifier.padding(2.dp, 2.dp, 0.dp, 0.dp))
+        "nostr", "nostrich", "nostriches" -> 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))
         "plebs", "pleb", "plebchain" -> HashtagIcon(R.drawable.plebs, "Pleb", Color.Unspecified, Modifier.padding(2.dp, 2.dp, 0.dp, 1.dp))
-        "coffee", "coffeechain" -> HashtagIcon(R.drawable.coffee, "Coffee", Color.Unspecified, Modifier.padding(2.dp, 2.dp, 0.dp, 0.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))
         else -> null
     }
 }

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

@@ -29,7 +29,7 @@ fun ByteArray.toHexKey(): HexKey {
     return toHex()
 }
 
-fun HexKey.toByteArray(): ByteArray {
+fun HexKey.hexToByteArray(): ByteArray {
     return Hex.decode(this)
 }
 
@@ -39,7 +39,7 @@ fun HexKey.toDisplayHexKey(): String {
 
 fun decodePublicKey(key: String): ByteArray {
     val parsed = Nip19.uriToRoute(key)
-    val pubKeyParsed = parsed?.hex?.toByteArray()
+    val pubKeyParsed = parsed?.hex?.hexToByteArray()
 
     return if (key.startsWith("nsec")) {
         Persona(privKey = key.bechToBytes()).pubKey
@@ -84,15 +84,15 @@ fun parseDirtyWordForKey(mightBeAKey: String): DirtyKeyInfo? {
         } else if (key.startsWith("nprofile", true)) {
             val pubkeyRelay = Nip19.uriToRoute(keyB32 + restOfWord) ?: return null
 
-            return DirtyKeyInfo(pubkeyRelay, restOfWord)
-        } else if (key.startsWith("nevent", true)) {
+            return DirtyKeyInfo(pubkeyRelay, pubkeyRelay.additionalChars)
+        } else if (key.startsWith("nevent1", true)) {
             val noteRelayId = Nip19.uriToRoute(keyB32 + restOfWord) ?: return null
 
-            return DirtyKeyInfo(noteRelayId, restOfWord)
+            return DirtyKeyInfo(noteRelayId, noteRelayId.additionalChars)
         } else if (key.startsWith("naddr1", true)) {
             val address = Nip19.uriToRoute(keyB32 + restOfWord) ?: return null
 
-            return DirtyKeyInfo(address, "") // no way to know when they address ends and dirt begins
+            return DirtyKeyInfo(address, address.additionalChars) // no way to know when they address ends and dirt begins
         }
     } catch (e: Exception) {
         e.printStackTrace()

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

@@ -1,9 +1,11 @@
 package com.vitorpamplona.amethyst.model
 
 import android.util.Log
+import androidx.core.net.toUri
 import androidx.lifecycle.LiveData
 import com.fasterxml.jackson.databind.DeserializationFeature
 import com.fasterxml.jackson.module.kotlin.jacksonObjectMapper
+import com.vitorpamplona.amethyst.Amethyst
 import com.vitorpamplona.amethyst.service.model.*
 import com.vitorpamplona.amethyst.service.relays.Relay
 import com.vitorpamplona.amethyst.ui.components.BundledInsert
@@ -11,6 +13,9 @@ import fr.acinq.secp256k1.Hex
 import kotlinx.coroutines.*
 import nostr.postr.toNpub
 import java.io.ByteArrayInputStream
+import java.io.File
+import java.io.FileOutputStream
+import java.io.IOException
 import java.time.Instant
 import java.time.ZoneId
 import java.time.format.DateTimeFormatter
@@ -30,6 +35,9 @@ object LocalCache {
     val channels = ConcurrentHashMap<HexKey, Channel>()
     val addressables = ConcurrentHashMap<String, AddressableNote>(100)
 
+    val awaitingPaymentRequests =
+        ConcurrentHashMap<HexKey, Pair<Note?, (LnZapPaymentResponseEvent) -> Unit>>(10)
+
     fun checkGetOrCreateUser(key: String): User? {
         if (isValidHexNpub(key)) {
             return getOrCreateUser(key)
@@ -151,6 +159,20 @@ object LocalCache {
         }
     }
 
+    fun consume(event: PeopleListEvent) {
+        val note = getOrCreateAddressableNote(event.address())
+        val author = getOrCreateUser(event.pubKey)
+
+        // Already processed this event.
+        if (note.event?.id() == event.id()) return
+
+        if (event.createdAt > (note.createdAt() ?: 0)) {
+            note.loadEvent(event, author, emptyList())
+
+            refreshObservers(note)
+        }
+    }
+
     fun formattedDateTime(timestamp: Long): String {
         return Instant.ofEpochSecond(timestamp).atZone(ZoneId.systemDefault())
             .format(DateTimeFormatter.ofPattern("uuuu MMM d hh:mm a"))
@@ -337,7 +359,7 @@ object LocalCache {
         // Already processed this event.
         if (note.event != null) return
 
-        val recipient = event.recipientPubKey()?.let { getOrCreateUser(it) }
+        val recipient = event.verifiedRecipientPubKey()?.let { getOrCreateUser(it) }
 
         // Log.d("PM", "${author.toBestDisplayName()} to ${recipient?.toBestDisplayName()}")
 
@@ -376,6 +398,7 @@ object LocalCache {
                     masterNote.removeBoost(deleteNote)
                     masterNote.removeReaction(deleteNote)
                     masterNote.removeZap(deleteNote)
+                    masterNote.removeZapPayment(deleteNote)
                     masterNote.removeReport(deleteNote)
                 }
 
@@ -384,7 +407,7 @@ object LocalCache {
 
                 if (deleteNote.event is PrivateDmEvent) {
                     val author = deleteNote.author
-                    val recipient = (deleteNote.event as? PrivateDmEvent)?.recipientPubKey()?.let { checkGetOrCreateUser(it) }
+                    val recipient = (deleteNote.event as? PrivateDmEvent)?.verifiedRecipientPubKey()?.let { checkGetOrCreateUser(it) }
 
                     if (recipient != null && author != null) {
                         author.removeMessage(recipient, deleteNote)
@@ -593,7 +616,6 @@ object LocalCache {
 
     fun consume(event: LnZapEvent) {
         val note = getOrCreateNote(event.id)
-
         // Already processed this event.
         if (note.event != null) return
 
@@ -651,6 +673,140 @@ object LocalCache {
         refreshObservers(note)
     }
 
+    fun consume(event: FileHeaderEvent, relay: Relay?) {
+        val note = getOrCreateNote(event.id)
+        val author = getOrCreateUser(event.pubKey)
+
+        if (relay != null) {
+            author.addRelayBeingUsed(relay, event.createdAt)
+            note.addRelay(relay)
+        }
+
+        // Already processed this event.
+        if (note.event != null) return
+
+        note.loadEvent(event, author, emptyList())
+
+        refreshObservers(note)
+    }
+
+    fun consume(event: FileStorageHeaderEvent, relay: Relay?) {
+        val note = getOrCreateNote(event.id)
+        val author = getOrCreateUser(event.pubKey)
+
+        if (relay != null) {
+            author.addRelayBeingUsed(relay, event.createdAt)
+            note.addRelay(relay)
+        }
+
+        // Already processed this event.
+        if (note.event != null) return
+
+        note.loadEvent(event, author, emptyList())
+
+        refreshObservers(note)
+    }
+
+    fun consume(event: HighlightEvent, relay: Relay?) {
+        val note = getOrCreateNote(event.id)
+        val author = getOrCreateUser(event.pubKey)
+
+        if (relay != null) {
+            author.addRelayBeingUsed(relay, event.createdAt)
+            note.addRelay(relay)
+        }
+
+        // Already processed this event.
+        if (note.event != null) return
+
+        note.loadEvent(event, author, emptyList())
+
+        // Adds to user profile
+        author.addNote(note)
+
+        refreshObservers(note)
+    }
+
+    fun consume(event: FileStorageEvent, relay: Relay?) {
+        val note = getOrCreateNote(event.id)
+        val author = getOrCreateUser(event.pubKey)
+
+        if (relay != null) {
+            author.addRelayBeingUsed(relay, event.createdAt)
+            note.addRelay(relay)
+        }
+
+        val file = File(Amethyst.instance.applicationContext.externalCacheDir, "NIP95")
+
+        if (!file.exists()) {
+            try {
+                val cachePath = File(Amethyst.instance.applicationContext.externalCacheDir, "NIP95")
+                cachePath.mkdirs()
+                val stream = FileOutputStream(File(cachePath, event.id))
+                stream.write(event.decode())
+                stream.close()
+                Log.e("EventLogger", "Saved to disk as ${File(cachePath, event.id).toUri()}")
+            } catch (e: IOException) {
+                Log.e("FileSotrageEvent", "FileStorageEvent save to disk error: " + event.id, e)
+            }
+        }
+
+        // Already processed this event.
+        if (note.event != null) return
+
+        // this is an invalid event. But we don't need to keep the data in memory.
+        val eventNoData = FileStorageEvent(event.id, event.pubKey, event.createdAt, event.tags, "", event.sig)
+
+        note.loadEvent(eventNoData, author, emptyList())
+
+        refreshObservers(note)
+    }
+
+    fun consume(event: LnZapPaymentRequestEvent) {
+        // Does nothing without a response callback.
+    }
+
+    fun consume(event: LnZapPaymentRequestEvent, zappedNote: Note?, onResponse: (LnZapPaymentResponseEvent) -> Unit) {
+        val note = getOrCreateNote(event.id)
+        val author = getOrCreateUser(event.pubKey)
+
+        // Already processed this event.
+        if (note.event != null) return
+
+        note.loadEvent(event, author, emptyList())
+
+        zappedNote?.addZapPayment(note, null)
+
+        awaitingPaymentRequests.put(event.id, Pair(zappedNote, onResponse))
+
+        refreshObservers(note)
+    }
+
+    fun consume(event: LnZapPaymentResponseEvent) {
+        val requestId = event.requestId()
+        val pair = awaitingPaymentRequests[requestId] ?: return
+
+        val (zappedNote, responseCallback) = pair
+
+        val requestNote = requestId?.let { checkGetOrCreateNote(requestId) }
+
+        val note = getOrCreateNote(event.id)
+        val author = getOrCreateUser(event.pubKey)
+
+        // Already processed this event.
+        if (note.event != null) return
+
+        note.loadEvent(event, author, emptyList())
+
+        requestNote?.let { request ->
+            zappedNote?.addZapPayment(request, note)
+        }
+
+        if (responseCallback != null) {
+            responseCallback(event)
+        }
+    }
+
     fun findUsersStartingWith(username: String): List<User> {
         return users.values.filter {
             (it.anyNameStartsWith(username)) ||
@@ -760,7 +916,7 @@ object LocalCache {
 class LocalCacheLiveData : LiveData<Set<Note>>(setOf<Note>()) {
 
     // Refreshes observers in batches.
-    private val bundler = BundledInsert<Note>(300, Dispatchers.Main)
+    private val bundler = BundledInsert<Note>(300, Dispatchers.IO)
 
     fun invalidateData(newNote: Note) {
         bundler.invalidateList(newNote) { bundledNewNotes ->

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

@@ -2,7 +2,9 @@ package com.vitorpamplona.amethyst.model
 
 import androidx.lifecycle.LiveData
 import com.vitorpamplona.amethyst.service.NostrSingleEventDataSource
+import com.vitorpamplona.amethyst.service.lnurl.LnInvoiceUtil
 import com.vitorpamplona.amethyst.service.model.*
+import com.vitorpamplona.amethyst.service.nip19.Nip19
 import com.vitorpamplona.amethyst.service.relays.EOSETime
 import com.vitorpamplona.amethyst.service.relays.Relay
 import com.vitorpamplona.amethyst.ui.components.BundledUpdate
@@ -20,6 +22,7 @@ val tagSearch = Pattern.compile("(?:\\s|\\A)\\#\\[([0-9]+)\\]")
 
 class AddressableNote(val address: ATag) : Note(address.toTag()) {
     override fun idNote() = address.toNAddr()
+    override fun toNEvent() = address.toNAddr()
     override fun idDisplayNote() = idNote().toShortenHex()
     override fun address() = address
     override fun createdAt() = (event as? LongTextNoteEvent)?.publishedAt() ?: event?.createdAt()
@@ -43,6 +46,8 @@ open class Note(val idHex: String) {
         private set
     var zaps = mapOf<Note, Note?>()
         private set
+    var zapPayments = mapOf<Note, Note?>()
+        private set
 
     var relays = setOf<String>()
         private set
@@ -51,6 +56,11 @@ open class Note(val idHex: String) {
 
     fun id() = Hex.decode(idHex)
     open fun idNote() = id().toNote()
+
+    open fun toNEvent(): String {
+        return Nip19.createNEvent(idHex, author?.pubkeyHex, event?.kind(), relays.firstOrNull())
+    }
+
     open fun idDisplayNote() = idNote().toShortenHex()
 
     fun channelHex(): HexKey? {
@@ -149,6 +159,17 @@ open class Note(val idHex: String) {
         }
     }
 
+    fun removeZapPayment(note: Note) {
+        if (zapPayments[note] != null) {
+            zapPayments = zapPayments.minus(note)
+            liveSet?.zaps?.invalidateData()
+        } else if (zapPayments.containsValue(note)) {
+            val toRemove = zapPayments.filterValues { it == note }
+            zapPayments = zapPayments.minus(toRemove.keys)
+            liveSet?.zaps?.invalidateData()
+        }
+    }
+
     fun addBoost(note: Note) {
         if (note !in boosts) {
             boosts = boosts + note
@@ -167,6 +188,17 @@ open class Note(val idHex: String) {
         }
     }
 
+    @Synchronized
+    fun addZapPayment(zapPaymentRequest: Note, zapPayment: Note?) {
+        if (zapPaymentRequest !in zapPayments.keys) {
+            zapPayments = zapPayments + Pair(zapPaymentRequest, zapPayment)
+            liveSet?.zaps?.invalidateData()
+        } else if (zapPaymentRequest in zapPayments.keys && zapPayments[zapPaymentRequest] == null) {
+            zapPayments = zapPayments + Pair(zapPaymentRequest, zapPayment)
+            liveSet?.zaps?.invalidateData()
+        }
+    }
+
     fun addReaction(note: Note) {
         if (note !in reactions) {
             reactions = reactions + note
@@ -193,9 +225,19 @@ open class Note(val idHex: String) {
         }
     }
 
-    fun isZappedBy(user: User): Boolean {
+    fun isZappedBy(user: User, account: Account): Boolean {
         // Zaps who the requester was the user
-        return zaps.any { it.key.author === user }
+        return zaps.any {
+            it.key.author === user || account.decryptZapContentAuthor(it.key)?.pubKey == user.pubkeyHex
+        } || zapPayments.any {
+            val zapResponseEvent = it.value?.event as? LnZapPaymentResponseEvent
+            val response = if (zapResponseEvent != null) {
+                account.decryptZapPaymentResponseEvent(zapResponseEvent)
+            } else {
+                null
+            }
+            response is PayInvoiceSuccessResponse && account.isNIP47Author(zapResponseEvent?.requestAuthor())
+        }
     }
 
     fun isReactedBy(user: User): Boolean {
@@ -224,12 +266,44 @@ open class Note(val idHex: String) {
         }.flatten()
     }
 
-    fun zappedAmount(): BigDecimal {
-        return zaps.mapNotNull { it.value?.event }
+    fun zappedAmount(privKey: ByteArray?, walletServicePubkey: ByteArray?): BigDecimal {
+        // Regular Zap Receipts
+        val completedZaps = zaps.asSequence()
+            .mapNotNull { it.value?.event }
             .filterIsInstance<LnZapEvent>()
-            .mapNotNull {
-                it.amount
-            }.sumOf { it }
+            .filter { it.amount != null }
+            .associate {
+                it.lnInvoice() to it.amount
+            }
+            .toMap()
+
+        val completedPayments = if (privKey != null && walletServicePubkey != null) {
+            // Payments confirmed by the User's Wallet
+            zapPayments
+                .asSequence()
+                .filter {
+                    val response = (it.value?.event as? LnZapPaymentResponseEvent)?.response(privKey, walletServicePubkey)
+                    response is PayInvoiceSuccessResponse
+                }
+                .associate {
+                    val lnInvoice = (it.key.event as? LnZapPaymentRequestEvent)?.lnInvoice(privKey, walletServicePubkey)
+                    val amount = try {
+                        if (lnInvoice == null) {
+                            null
+                        } else {
+                            LnInvoiceUtil.getAmountInSats(lnInvoice)
+                        }
+                    } catch (e: java.lang.Exception) {
+                        null
+                    }
+                    lnInvoice to amount
+                }
+                .toMap()
+        } else {
+            emptyMap()
+        }
+
+        return (completedZaps + completedPayments).values.filterNotNull().sumOf { it }
     }
 
     fun hasPledgeBy(user: User): Boolean {
@@ -336,9 +410,9 @@ class NoteLiveSet(u: Note) {
 
 class NoteLiveData(val note: Note) : LiveData<NoteState>(NoteState(note)) {
     // Refreshes observers in batches.
-    private val bundler = BundledUpdate(300, Dispatchers.Main) {
+    private val bundler = BundledUpdate(300, Dispatchers.IO) {
         if (hasActiveObservers()) {
-            refresh()
+            postValue(NoteState(note))
         }
     }
 
@@ -346,10 +420,6 @@ class NoteLiveData(val note: Note) : LiveData<NoteState>(NoteState(note)) {
         bundler.invalidate()
     }
 
-    private fun refresh() {
-        postValue(NoteState(note))
-    }
-
     override fun onActive() {
         super.onActive()
         if (note is AddressableNote) {

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

@@ -6,7 +6,7 @@ import kotlin.time.measureTimedValue
 
 class ThreadAssembler {
 
-    fun searchRoot(note: Note, testedNotes: MutableSet<Note> = mutableSetOf()): Note? {
+    private fun searchRoot(note: Note, testedNotes: MutableSet<Note> = mutableSetOf()): Note? {
         if (note.replyTo == null || note.replyTo?.isEmpty() == true) return note
 
         testedNotes.add(note)

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

@@ -47,6 +47,7 @@ class User(val pubkeyHex: String) {
 
     fun pubkey() = Hex.decode(pubkeyHex)
     fun pubkeyNpub() = pubkey().toNpub()
+
     fun pubkeyDisplayHex() = pubkeyNpub().toShortenHex()
 
     override fun toString(): String = pubkeyHex
@@ -180,7 +181,7 @@ class User(val pubkeyHex: String) {
     }
 
     @Synchronized
-    fun getOrCreatePrivateChatroom(user: User): Chatroom {
+    private fun getOrCreatePrivateChatroom(user: User): Chatroom {
         return privateChatrooms[user] ?: run {
             val privateChatroom = Chatroom(setOf<Note>())
             privateChatrooms = privateChatrooms + Pair(user, privateChatroom)
@@ -395,9 +396,9 @@ class UserMetadata {
 
 class UserLiveData(val user: User) : LiveData<UserState>(UserState(user)) {
     // Refreshes observers in batches.
-    private val bundler = BundledUpdate(300, Dispatchers.Main) {
+    private val bundler = BundledUpdate(300, Dispatchers.IO) {
         if (hasActiveObservers()) {
-            refresh()
+            postValue(UserState(user))
         }
     }
 
@@ -405,10 +406,6 @@ class UserLiveData(val user: User) : LiveData<UserState>(UserState(user)) {
         bundler.invalidate()
     }
 
-    private fun refresh() {
-        postValue(UserState(user))
-    }
-
     override fun onActive() {
         super.onActive()
         NostrSingleUserDataSource.add(user)

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

@@ -0,0 +1,203 @@
+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? {
+        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 +1,64 @@
+package com.vitorpamplona.amethyst.service
+
+import android.content.Context
+import android.net.Uri
+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
+
+class BlurHashFetcher(
+    private val options: Options,
+    private val data: Uri
+) : Fetcher {
+
+    override suspend fun fetch(): FetchResult {
+        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/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.model.toHexKey
+import com.vitorpamplona.amethyst.ui.actions.ImageDownloader
+import io.trbl.blurhash.BlurHash
+import java.security.MessageDigest
+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 description: String? = null
+) {
+    companion object {
+        suspend fun prepare(fileUrl: String, mimeType: String?, description: String?, onReady: (FileHeader) -> Unit, onError: () -> Unit) {
+            try {
+                val imageData: ByteArray? = ImageDownloader().waitAndGetImage(fileUrl)
+
+                if (imageData != null) {
+                    prepare(imageData, fileUrl, mimeType, description, onReady, onError)
+                } else {
+                    onError()
+                }
+            } catch (e: Exception) {
+                Log.e("ImageDownload", "Couldn't download image from server: ${e.message}")
+                onError()
+            }
+        }
+
+        fun prepare(
+            data: ByteArray,
+            fileUrl: String,
+            mimeType: String?,
+            description: String?,
+            onReady: (FileHeader) -> Unit,
+            onError: () -> Unit
+        ) {
+            try {
+                val sha256 = MessageDigest.getInstance("SHA-256")
+
+                val hash = sha256.digest(data).toHexKey()
+                val size = data.size
+
+                val (blurHash, dim) = if (mimeType?.startsWith("image/") == true) {
+                    val opt = BitmapFactory.Options()
+                    opt.inPreferredConfig = Bitmap.Config.ARGB_8888
+                    val mBitmap = BitmapFactory.decodeByteArray(data, 0, data.size, opt)
+
+                    val intArray = IntArray(mBitmap.width * mBitmap.height)
+                    mBitmap.getPixels(
+                        intArray,
+                        0,
+                        mBitmap.width,
+                        0,
+                        0,
+                        mBitmap.width,
+                        mBitmap.height
+                    )
+
+                    val dim = "${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, description))
+            } 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/Nip47.kt

@@ -14,7 +14,7 @@ object Nip47 {
 
         val url = Uri.parse(uri)
 
-        if (url.scheme != "nostrwalletconnect") {
+        if (url.scheme != "nostrwalletconnect" && url.scheme != "nostr+walletconnect") {
             throw IllegalArgumentException("Not a Wallet Connect QR Code")
         }
 

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

@@ -13,9 +13,11 @@ import com.vitorpamplona.amethyst.service.model.ReactionEvent
 import com.vitorpamplona.amethyst.service.model.ReportEvent
 import com.vitorpamplona.amethyst.service.model.RepostEvent
 import com.vitorpamplona.amethyst.service.model.TextNoteEvent
+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.FeedType
 import com.vitorpamplona.amethyst.service.relays.JsonFilter
+import com.vitorpamplona.amethyst.service.relays.Relay
 import com.vitorpamplona.amethyst.service.relays.TypedFilter
 
 object NostrAccountDataSource : NostrDataSource("AccountData") {
@@ -25,7 +27,7 @@ object NostrAccountDataSource : NostrDataSource("AccountData") {
 
     fun createAccountContactListFilter(): TypedFilter {
         return TypedFilter(
-            types = FeedType.values().toSet(),
+            types = COMMON_FEED_TYPES,
             filter = JsonFilter(
                 kinds = listOf(ContactListEvent.kind),
                 authors = listOf(account.userProfile().pubkeyHex),
@@ -36,7 +38,7 @@ object NostrAccountDataSource : NostrDataSource("AccountData") {
 
     fun createAccountMetadataFilter(): TypedFilter {
         return TypedFilter(
-            types = FeedType.values().toSet(),
+            types = COMMON_FEED_TYPES,
             filter = JsonFilter(
                 kinds = listOf(MetadataEvent.kind),
                 authors = listOf(account.userProfile().pubkeyHex),
@@ -47,7 +49,7 @@ object NostrAccountDataSource : NostrDataSource("AccountData") {
 
     fun createAccountAcceptedAwardsFilter(): TypedFilter {
         return TypedFilter(
-            types = FeedType.values().toSet(),
+            types = COMMON_FEED_TYPES,
             filter = JsonFilter(
                 kinds = listOf(BadgeProfilesEvent.kind),
                 authors = listOf(account.userProfile().pubkeyHex),
@@ -58,28 +60,28 @@ object NostrAccountDataSource : NostrDataSource("AccountData") {
 
     fun createAccountBookmarkListFilter(): TypedFilter {
         return TypedFilter(
-            types = FeedType.values().toSet(),
+            types = COMMON_FEED_TYPES,
             filter = JsonFilter(
-                kinds = listOf(BookmarkListEvent.kind),
+                kinds = listOf(BookmarkListEvent.kind, PeopleListEvent.kind),
                 authors = listOf(account.userProfile().pubkeyHex),
-                limit = 1
+                limit = 100
             )
         )
     }
 
     fun createAccountReportsFilter(): TypedFilter {
         return TypedFilter(
-            types = FeedType.values().toSet(),
+            types = COMMON_FEED_TYPES,
             filter = JsonFilter(
                 kinds = listOf(ReportEvent.kind),
                 authors = listOf(account.userProfile().pubkeyHex),
-                since = latestEOSEs.users[account.userProfile()]?.relayList
+                since = latestEOSEs.users[account.userProfile()]?.followList?.get(account.defaultNotificationFollowList)?.relayList
             )
         )
     }
 
     fun createNotificationFilter() = TypedFilter(
-        types = FeedType.values().toSet(),
+        types = COMMON_FEED_TYPES,
         filter = JsonFilter(
             kinds = listOf(
                 TextNoteEvent.kind,
@@ -88,17 +90,18 @@ object NostrAccountDataSource : NostrDataSource("AccountData") {
                 RepostEvent.kind,
                 ReportEvent.kind,
                 LnZapEvent.kind,
+                LnZapPaymentResponseEvent.kind,
                 ChannelMessageEvent.kind,
                 BadgeAwardEvent.kind
             ),
             tags = mapOf("p" to listOf(account.userProfile().pubkeyHex)),
             limit = 400,
-            since = latestEOSEs.users[account.userProfile()]?.relayList
+            since = latestEOSEs.users[account.userProfile()]?.followList?.get(account.defaultNotificationFollowList)?.relayList
         )
     )
 
     val accountChannel = requestNewChannel { time, relayUrl ->
-        latestEOSEs.addOrUpdate(account.userProfile(), relayUrl, time)
+        latestEOSEs.addOrUpdate(account.userProfile(), account.defaultNotificationFollowList, relayUrl, time)
     }
 
     override fun updateChannelFilters() {
@@ -112,4 +115,19 @@ object NostrAccountDataSource : NostrDataSource("AccountData") {
             createAccountBookmarkListFilter()
         ).ifEmpty { null }
     }
+
+    override fun auth(relay: Relay, challenge: String) {
+        super.auth(relay, challenge)
+
+        if (this::account.isInitialized) {
+            val event = account.createAuthEvent(relay, challenge)
+
+            if (event != null) {
+                Client.send(
+                    event,
+                    relay.url
+                )
+            }
+        }
+    }
 }

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

@@ -5,6 +5,7 @@ import com.vitorpamplona.amethyst.service.model.ChannelCreateEvent
 import com.vitorpamplona.amethyst.service.model.ChannelMessageEvent
 import com.vitorpamplona.amethyst.service.model.ChannelMetadataEvent
 import com.vitorpamplona.amethyst.service.model.PrivateDmEvent
+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
@@ -14,13 +15,14 @@ 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()]?.relayList
+            since = latestEOSEs.users[account.userProfile()]?.followList?.get(chatRoomList)?.relayList
         )
     )
 
@@ -29,7 +31,7 @@ object NostrChatroomListDataSource : NostrDataSource("MailBoxFeed") {
         filter = JsonFilter(
             kinds = listOf(PrivateDmEvent.kind),
             authors = listOf(account.userProfile().pubkeyHex),
-            since = latestEOSEs.users[account.userProfile()]?.relayList
+            since = latestEOSEs.users[account.userProfile()]?.followList?.get(chatRoomList)?.relayList
         )
     )
 
@@ -38,23 +40,23 @@ object NostrChatroomListDataSource : NostrDataSource("MailBoxFeed") {
         filter = JsonFilter(
             kinds = listOf(ChannelCreateEvent.kind, ChannelMetadataEvent.kind),
             authors = listOf(account.userProfile().pubkeyHex),
-            since = latestEOSEs.users[account.userProfile()]?.relayList
+            since = latestEOSEs.users[account.userProfile()]?.followList?.get(chatRoomList)?.relayList
         )
     )
 
     fun createMyChannelsFilter() = TypedFilter(
-        types = FeedType.values().toSet(), // Metadata comes from any relay
+        types = COMMON_FEED_TYPES, // Metadata comes from any relay
         filter = JsonFilter(
             kinds = listOf(ChannelCreateEvent.kind),
             ids = account.followingChannels.toList(),
-            since = latestEOSEs.users[account.userProfile()]?.relayList
+            since = latestEOSEs.users[account.userProfile()]?.followList?.get(chatRoomList)?.relayList
         )
     )
 
     fun createLastChannelInfoFilter(): List<TypedFilter> {
         return account.followingChannels.map {
             TypedFilter(
-                types = FeedType.values().toSet(), // Metadata comes from any relay
+                types = COMMON_FEED_TYPES, // Metadata comes from any relay
                 filter = JsonFilter(
                     kinds = listOf(ChannelMetadataEvent.kind),
                     tags = mapOf("e" to listOf(it)),
@@ -71,7 +73,7 @@ object NostrChatroomListDataSource : NostrDataSource("MailBoxFeed") {
                 filter = JsonFilter(
                     kinds = listOf(ChannelMessageEvent.kind),
                     tags = mapOf("e" to listOf(it)),
-                    since = latestEOSEs.users[account.userProfile()]?.relayList,
+                    since = latestEOSEs.users[account.userProfile()]?.followList?.get(chatRoomList)?.relayList,
                     limit = 25 // Remember to consider spam that is being removed from the UI
                 )
             )
@@ -79,7 +81,7 @@ object NostrChatroomListDataSource : NostrDataSource("MailBoxFeed") {
     }
 
     val chatroomListChannel = requestNewChannel { time, relayUrl ->
-        latestEOSEs.addOrUpdate(account.userProfile(), relayUrl, time)
+        latestEOSEs.addOrUpdate(account.userProfile(), chatRoomList, relayUrl, time)
     }
 
     override fun updateChannelFilters() {

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

@@ -35,6 +35,7 @@ import kotlinx.coroutines.Job
 import kotlinx.coroutines.launch
 import java.util.Date
 import java.util.UUID
+import kotlin.Error
 
 abstract class NostrDataSource(val debugName: String) {
     private var subscriptions = mapOf<String, Subscription>()
@@ -75,14 +76,21 @@ abstract class NostrDataSource(val debugName: String) {
                         is ContactListEvent -> LocalCache.consume(event)
                         is DeletionEvent -> LocalCache.consume(event)
 
+                        is FileHeaderEvent -> LocalCache.consume(event, relay)
+                        is FileStorageEvent -> LocalCache.consume(event, relay)
+                        is FileStorageHeaderEvent -> LocalCache.consume(event, relay)
+                        is HighlightEvent -> LocalCache.consume(event, relay)
                         is LnZapEvent -> {
                             event.zapRequest?.let { onEvent(it, subscriptionId, relay) }
                             LocalCache.consume(event)
                         }
                         is LnZapRequestEvent -> LocalCache.consume(event)
+                        is LnZapPaymentRequestEvent -> LocalCache.consume(event)
+                        is LnZapPaymentResponseEvent -> LocalCache.consume(event)
                         is LongTextNoteEvent -> LocalCache.consume(event, relay)
                         is MetadataEvent -> LocalCache.consume(event)
                         is PrivateDmEvent -> LocalCache.consume(event, relay)
+                        is PeopleListEvent -> LocalCache.consume(event)
                         is ReactionEvent -> LocalCache.consume(event)
                         is RecommendRelayEvent -> LocalCache.consume(event)
                         is ReportEvent -> LocalCache.consume(event, relay)
@@ -122,12 +130,21 @@ abstract class NostrDataSource(val debugName: String) {
 
         override fun onSendResponse(eventId: String, success: Boolean, message: String, relay: Relay) {
         }
+
+        override fun onAuth(relay: Relay, challenge: String) {
+            auth(relay, challenge)
+        }
     }
 
     init {
         Client.subscribe(clientListener)
     }
 
+    fun destroy() {
+        stop()
+        Client.unsubscribe(clientListener)
+    }
+
     open fun start() {
         println("DataSource: ${this.javaClass.simpleName} Start")
         resetFilters()
@@ -212,4 +229,5 @@ abstract class NostrDataSource(val debugName: String) {
     }
 
     abstract fun updateChannelFilters()
+    open fun auth(relay: Relay, challenge: String) = Unit
 }

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

@@ -1,6 +1,7 @@
 package com.vitorpamplona.amethyst.service
 
 import com.vitorpamplona.amethyst.service.model.ChannelMessageEvent
+import com.vitorpamplona.amethyst.service.model.HighlightEvent
 import com.vitorpamplona.amethyst.service.model.LongTextNoteEvent
 import com.vitorpamplona.amethyst.service.model.PollNoteEvent
 import com.vitorpamplona.amethyst.service.model.TextNoteEvent
@@ -12,7 +13,7 @@ object NostrGlobalDataSource : NostrDataSource("GlobalFeed") {
     fun createGlobalFilter() = TypedFilter(
         types = setOf(FeedType.GLOBAL),
         filter = JsonFilter(
-            kinds = listOf(TextNoteEvent.kind, PollNoteEvent.kind, ChannelMessageEvent.kind, LongTextNoteEvent.kind),
+            kinds = listOf(TextNoteEvent.kind, PollNoteEvent.kind, ChannelMessageEvent.kind, LongTextNoteEvent.kind, HighlightEvent.kind),
             limit = 200
         )
     )

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

@@ -4,7 +4,7 @@ import androidx.compose.ui.text.capitalize
 import com.vitorpamplona.amethyst.service.model.ChannelMessageEvent
 import com.vitorpamplona.amethyst.service.model.LongTextNoteEvent
 import com.vitorpamplona.amethyst.service.model.TextNoteEvent
-import com.vitorpamplona.amethyst.service.relays.FeedType
+import com.vitorpamplona.amethyst.service.relays.COMMON_FEED_TYPES
 import com.vitorpamplona.amethyst.service.relays.JsonFilter
 import com.vitorpamplona.amethyst.service.relays.TypedFilter
 
@@ -15,7 +15,7 @@ object NostrHashtagDataSource : NostrDataSource("SingleHashtagFeed") {
         val hashToLoad = hashtagToWatch ?: return null
 
         return TypedFilter(
-            types = FeedType.values().toSet(),
+            types = COMMON_FEED_TYPES,
             filter = JsonFilter(
                 tags = mapOf(
                     "t" to listOf(

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

@@ -2,6 +2,7 @@ package com.vitorpamplona.amethyst.service
 
 import com.vitorpamplona.amethyst.model.Account
 import com.vitorpamplona.amethyst.model.UserState
+import com.vitorpamplona.amethyst.service.model.HighlightEvent
 import com.vitorpamplona.amethyst.service.model.LongTextNoteEvent
 import com.vitorpamplona.amethyst.service.model.PollNoteEvent
 import com.vitorpamplona.amethyst.service.model.TextNoteEvent
@@ -44,7 +45,7 @@ object NostrHomeDataSource : NostrDataSource("HomeFeed") {
     }
 
     fun createFollowAccountsFilter(): TypedFilter {
-        val follows = account.followingKeySet()
+        val follows = account.selectedUsersFollowList(account.defaultHomeFollowList) ?: emptySet()
 
         val followKeys = follows.map {
             it.substring(0, 6)
@@ -55,36 +56,36 @@ object NostrHomeDataSource : NostrDataSource("HomeFeed") {
         return TypedFilter(
             types = setOf(FeedType.FOLLOWS),
             filter = JsonFilter(
-                kinds = listOf(TextNoteEvent.kind, LongTextNoteEvent.kind, PollNoteEvent.kind),
+                kinds = listOf(TextNoteEvent.kind, LongTextNoteEvent.kind, PollNoteEvent.kind, HighlightEvent.kind),
                 authors = followSet,
                 limit = 400,
-                since = latestEOSEs.users[account.userProfile()]?.relayList
+                since = latestEOSEs.users[account.userProfile()]?.followList?.get(account.defaultHomeFollowList)?.relayList
             )
         )
     }
 
     fun createFollowTagsFilter(): TypedFilter? {
-        val hashToLoad = account.followingTagSet()
+        val hashToLoad = account.selectedTagsFollowList(account.defaultHomeFollowList) ?: emptySet()
 
         if (hashToLoad.isEmpty()) return null
 
         return TypedFilter(
             types = setOf(FeedType.FOLLOWS),
             filter = JsonFilter(
-                kinds = listOf(TextNoteEvent.kind, LongTextNoteEvent.kind),
+                kinds = listOf(TextNoteEvent.kind, LongTextNoteEvent.kind, HighlightEvent.kind),
                 tags = mapOf(
                     "t" to hashToLoad.map {
                         listOf(it, it.lowercase(), it.uppercase(), it.capitalize())
                     }.flatten()
                 ),
                 limit = 100,
-                since = latestEOSEs.users[account.userProfile()]?.relayList
+                since = latestEOSEs.users[account.userProfile()]?.followList?.get(account.defaultHomeFollowList)?.relayList
             )
         )
     }
 
     val followAccountChannel = requestNewChannel { time, relayUrl ->
-        latestEOSEs.addOrUpdate(account.userProfile(), relayUrl, time)
+        latestEOSEs.addOrUpdate(account.userProfile(), account.defaultHomeFollowList, relayUrl, time)
     }
 
     override fun updateChannelFilters() {

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

@@ -0,0 +1,39 @@
+package com.vitorpamplona.amethyst.service
+
+import com.vitorpamplona.amethyst.service.model.LnZapPaymentResponseEvent
+import com.vitorpamplona.amethyst.service.relays.FeedType
+import com.vitorpamplona.amethyst.service.relays.JsonFilter
+import com.vitorpamplona.amethyst.service.relays.TypedFilter
+
+class NostrLnZapPaymentResponseDataSource(
+    private var fromServiceHex: String,
+    private var toUserHex: String,
+    private var replyingToHex: String
+) : 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 }
+    }
+}

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

@@ -2,6 +2,7 @@ package com.vitorpamplona.amethyst.service
 
 import com.vitorpamplona.amethyst.model.decodePublicKey
 import com.vitorpamplona.amethyst.service.model.*
+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
@@ -34,7 +35,7 @@ object NostrSearchEventOrUserDataSource : NostrDataSource("SingleEventFeed") {
         return listOfNotNull(
             hexToWatch?.let {
                 TypedFilter(
-                    types = FeedType.values().toSet(),
+                    types = COMMON_FEED_TYPES,
                     filter = JsonFilter(
                         ids = listOfNotNull(hexToWatch)
                     )
@@ -42,7 +43,7 @@ object NostrSearchEventOrUserDataSource : NostrDataSource("SingleEventFeed") {
             },
             hexToWatch?.let {
                 TypedFilter(
-                    types = FeedType.values().toSet(),
+                    types = COMMON_FEED_TYPES,
                     filter = JsonFilter(
                         kinds = listOf(MetadataEvent.kind),
                         authors = listOfNotNull(hexToWatch)
@@ -50,7 +51,7 @@ object NostrSearchEventOrUserDataSource : NostrDataSource("SingleEventFeed") {
                 )
             },
             TypedFilter(
-                types = FeedType.values().toSet(),
+                types = setOf(FeedType.SEARCH),
                 filter = JsonFilter(
                     kinds = listOf(MetadataEvent.kind),
                     search = mySearchString,
@@ -58,9 +59,8 @@ object NostrSearchEventOrUserDataSource : NostrDataSource("SingleEventFeed") {
                 )
             ),
             TypedFilter(
-                types = FeedType.values().toSet(),
+                types = setOf(FeedType.SEARCH),
                 filter = JsonFilter(
-                    kinds = listOf(TextNoteEvent.kind, LongTextNoteEvent.kind, PollNoteEvent.kind, ChannelMetadataEvent.kind, ChannelCreateEvent.kind, ChannelMessageEvent.kind),
                     search = mySearchString,
                     limit = 20
                 )

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

@@ -3,6 +3,7 @@ package com.vitorpamplona.amethyst.service
 import com.vitorpamplona.amethyst.model.LocalCache
 import com.vitorpamplona.amethyst.service.model.ChannelCreateEvent
 import com.vitorpamplona.amethyst.service.model.ChannelMetadataEvent
+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
@@ -40,7 +41,7 @@ object NostrSingleChannelDataSource : NostrDataSource("SingleChannelFeed") {
 
         // downloads linked events to this event.
         return TypedFilter(
-            types = FeedType.values().toSet(),
+            types = COMMON_FEED_TYPES,
             filter = JsonFilter(
                 kinds = listOf(ChannelCreateEvent.kind),
                 ids = interestedEvents.toList()

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

@@ -3,8 +3,8 @@ package com.vitorpamplona.amethyst.service
 import com.vitorpamplona.amethyst.model.AddressableNote
 import com.vitorpamplona.amethyst.model.Note
 import com.vitorpamplona.amethyst.service.model.*
+import com.vitorpamplona.amethyst.service.relays.COMMON_FEED_TYPES
 import com.vitorpamplona.amethyst.service.relays.EOSETime
-import com.vitorpamplona.amethyst.service.relays.FeedType
 import com.vitorpamplona.amethyst.service.relays.JsonFilter
 import com.vitorpamplona.amethyst.service.relays.TypedFilter
 
@@ -22,7 +22,7 @@ object NostrSingleEventDataSource : NostrDataSource("SingleEventFeed") {
         return addressesToWatch.mapNotNull {
             it.address()?.let { aTag ->
                 TypedFilter(
-                    types = FeedType.values().toSet(),
+                    types = COMMON_FEED_TYPES,
                     filter = JsonFilter(
                         kinds = listOf(
                             TextNoteEvent.kind, LongTextNoteEvent.kind,
@@ -49,7 +49,7 @@ object NostrSingleEventDataSource : NostrDataSource("SingleEventFeed") {
         return addressesToWatch.mapNotNull {
             it.address()?.let { aTag ->
                 TypedFilter(
-                    types = FeedType.values().toSet(),
+                    types = COMMON_FEED_TYPES,
                     filter = JsonFilter(
                         kinds = listOf(aTag.kind),
                         tags = mapOf("d" to listOf(aTag.dTag)),
@@ -69,7 +69,7 @@ object NostrSingleEventDataSource : NostrDataSource("SingleEventFeed") {
 
         return reactionsToWatch.map {
             TypedFilter(
-                types = FeedType.values().toSet(),
+                types = COMMON_FEED_TYPES,
                 filter = JsonFilter(
                     kinds = listOf(
                         TextNoteEvent.kind,
@@ -79,7 +79,8 @@ object NostrSingleEventDataSource : NostrDataSource("SingleEventFeed") {
                         ReportEvent.kind,
                         LnZapEvent.kind,
                         LnZapRequestEvent.kind,
-                        PollNoteEvent.kind
+                        PollNoteEvent.kind,
+                        HighlightEvent.kind
                     ),
                     tags = mapOf("e" to listOf(it.idHex)),
                     since = it.lastReactionsDownloadTime
@@ -108,12 +109,17 @@ object NostrSingleEventDataSource : NostrDataSource("SingleEventFeed") {
         // downloads linked events to this event.
         return listOf(
             TypedFilter(
-                types = FeedType.values().toSet(),
+                types = COMMON_FEED_TYPES,
                 filter = JsonFilter(
                     kinds = listOf(
-                        TextNoteEvent.kind, LongTextNoteEvent.kind, ReactionEvent.kind, RepostEvent.kind, LnZapEvent.kind, LnZapRequestEvent.kind,
-                        ChannelMessageEvent.kind, ChannelCreateEvent.kind, ChannelMetadataEvent.kind, BadgeDefinitionEvent.kind, BadgeAwardEvent.kind, BadgeProfilesEvent.kind,
-                        PollNoteEvent.kind, PrivateDmEvent.kind
+                        TextNoteEvent.kind, LongTextNoteEvent.kind, PollNoteEvent.kind,
+                        ReactionEvent.kind, RepostEvent.kind,
+                        LnZapEvent.kind, LnZapRequestEvent.kind,
+                        ChannelMessageEvent.kind, ChannelCreateEvent.kind, ChannelMetadataEvent.kind,
+                        BadgeDefinitionEvent.kind, BadgeAwardEvent.kind, BadgeProfilesEvent.kind,
+                        PrivateDmEvent.kind,
+                        FileHeaderEvent.kind, FileStorageEvent.kind, FileStorageHeaderEvent.kind,
+                        HighlightEvent.kind
                     ),
                     ids = interestedEvents.toList()
                 )

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

@@ -3,8 +3,8 @@ package com.vitorpamplona.amethyst.service
 import com.vitorpamplona.amethyst.model.User
 import com.vitorpamplona.amethyst.service.model.MetadataEvent
 import com.vitorpamplona.amethyst.service.model.ReportEvent
+import com.vitorpamplona.amethyst.service.relays.COMMON_FEED_TYPES
 import com.vitorpamplona.amethyst.service.relays.EOSETime
-import com.vitorpamplona.amethyst.service.relays.FeedType
 import com.vitorpamplona.amethyst.service.relays.JsonFilter
 import com.vitorpamplona.amethyst.service.relays.TypedFilter
 
@@ -16,7 +16,7 @@ object NostrSingleUserDataSource : NostrDataSource("SingleUserFeed") {
 
         return usersToWatch.filter { it.info?.latestMetadata == null }.map {
             TypedFilter(
-                types = FeedType.values().toSet(),
+                types = COMMON_FEED_TYPES,
                 filter = JsonFilter(
                     kinds = listOf(MetadataEvent.kind),
                     authors = listOf(it.pubkeyHex),
@@ -31,7 +31,7 @@ object NostrSingleUserDataSource : NostrDataSource("SingleUserFeed") {
 
         return usersToWatch.map {
             TypedFilter(
-                types = FeedType.values().toSet(),
+                types = COMMON_FEED_TYPES,
                 filter = JsonFilter(
                     kinds = listOf(ReportEvent.kind),
                     tags = mapOf("p" to listOf(it.pubkeyHex)),

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

@@ -1,7 +1,7 @@
 package com.vitorpamplona.amethyst.service
 
 import com.vitorpamplona.amethyst.model.ThreadAssembler
-import com.vitorpamplona.amethyst.service.relays.FeedType
+import com.vitorpamplona.amethyst.service.relays.COMMON_FEED_TYPES
 import com.vitorpamplona.amethyst.service.relays.JsonFilter
 import com.vitorpamplona.amethyst.service.relays.TypedFilter
 
@@ -18,7 +18,7 @@ object NostrThreadDataSource : NostrDataSource("SingleThreadFeed") {
             .ifEmpty { null } ?: return null
 
         return TypedFilter(
-            types = FeedType.values().toSet(),
+            types = COMMON_FEED_TYPES,
             filter = JsonFilter(
                 ids = eventsToLoad.map { it.substring(0, 8) }
             )

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

@@ -1,28 +1,22 @@
 package com.vitorpamplona.amethyst.service
 
-import com.vitorpamplona.amethyst.model.LocalCache
 import com.vitorpamplona.amethyst.model.User
 import com.vitorpamplona.amethyst.service.model.*
-import com.vitorpamplona.amethyst.service.relays.FeedType
+import com.vitorpamplona.amethyst.service.relays.COMMON_FEED_TYPES
 import com.vitorpamplona.amethyst.service.relays.JsonFilter
 import com.vitorpamplona.amethyst.service.relays.TypedFilter
 
 object NostrUserProfileDataSource : NostrDataSource("UserProfileFeed") {
     var user: User? = null
 
-    fun loadUserProfile(userId: String?) {
-        if (userId != null) {
-            user = LocalCache.getOrCreateUser(userId)
-        } else {
-            user = null
-        }
-
+    fun loadUserProfile(user: User?) {
+        this.user = user
         resetFilters()
     }
 
     fun createUserInfoFilter() = user?.let {
         TypedFilter(
-            types = FeedType.values().toSet(),
+            types = COMMON_FEED_TYPES,
             filter = JsonFilter(
                 kinds = listOf(MetadataEvent.kind),
                 authors = listOf(it.pubkeyHex),
@@ -33,9 +27,9 @@ object NostrUserProfileDataSource : NostrDataSource("UserProfileFeed") {
 
     fun createUserPostsFilter() = user?.let {
         TypedFilter(
-            types = FeedType.values().toSet(),
+            types = COMMON_FEED_TYPES,
             filter = JsonFilter(
-                kinds = listOf(TextNoteEvent.kind, RepostEvent.kind, LongTextNoteEvent.kind, PollNoteEvent.kind),
+                kinds = listOf(TextNoteEvent.kind, RepostEvent.kind, LongTextNoteEvent.kind, PollNoteEvent.kind, HighlightEvent.kind),
                 authors = listOf(it.pubkeyHex),
                 limit = 200
             )
@@ -44,7 +38,7 @@ object NostrUserProfileDataSource : NostrDataSource("UserProfileFeed") {
 
     fun createUserReceivedZapsFilter() = user?.let {
         TypedFilter(
-            types = FeedType.values().toSet(),
+            types = COMMON_FEED_TYPES,
             filter = JsonFilter(
                 kinds = listOf(LnZapEvent.kind),
                 tags = mapOf("p" to listOf(it.pubkeyHex))
@@ -54,7 +48,7 @@ object NostrUserProfileDataSource : NostrDataSource("UserProfileFeed") {
 
     fun createFollowFilter() = user?.let {
         TypedFilter(
-            types = FeedType.values().toSet(),
+            types = COMMON_FEED_TYPES,
             filter = JsonFilter(
                 kinds = listOf(ContactListEvent.kind),
                 authors = listOf(it.pubkeyHex),
@@ -65,7 +59,7 @@ object NostrUserProfileDataSource : NostrDataSource("UserProfileFeed") {
 
     fun createFollowersFilter() = user?.let {
         TypedFilter(
-            types = FeedType.values().toSet(),
+            types = COMMON_FEED_TYPES,
             filter = JsonFilter(
                 kinds = listOf(ContactListEvent.kind),
                 tags = mapOf("p" to listOf(it.pubkeyHex))
@@ -75,7 +69,7 @@ object NostrUserProfileDataSource : NostrDataSource("UserProfileFeed") {
 
     fun createAcceptedAwardsFilter() = user?.let {
         TypedFilter(
-            types = FeedType.values().toSet(),
+            types = COMMON_FEED_TYPES,
             filter = JsonFilter(
                 kinds = listOf(BadgeProfilesEvent.kind),
                 authors = listOf(it.pubkeyHex),
@@ -86,7 +80,7 @@ object NostrUserProfileDataSource : NostrDataSource("UserProfileFeed") {
 
     fun createBookmarksFilter() = user?.let {
         TypedFilter(
-            types = FeedType.values().toSet(),
+            types = COMMON_FEED_TYPES,
             filter = JsonFilter(
                 kinds = listOf(BookmarkListEvent.kind),
                 authors = listOf(it.pubkeyHex),
@@ -97,7 +91,7 @@ object NostrUserProfileDataSource : NostrDataSource("UserProfileFeed") {
 
     fun createReceivedAwardsFilter() = user?.let {
         TypedFilter(
-            types = FeedType.values().toSet(),
+            types = COMMON_FEED_TYPES,
             filter = JsonFilter(
                 kinds = listOf(BadgeAwardEvent.kind),
                 tags = mapOf("p" to listOf(it.pubkeyHex)),

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

@@ -0,0 +1,54 @@
+package com.vitorpamplona.amethyst.service
+
+import com.vitorpamplona.amethyst.model.Account
+import com.vitorpamplona.amethyst.service.model.FileHeaderEvent
+import com.vitorpamplona.amethyst.service.model.FileStorageHeaderEvent
+import com.vitorpamplona.amethyst.service.relays.FeedType
+import com.vitorpamplona.amethyst.service.relays.JsonFilter
+import com.vitorpamplona.amethyst.service.relays.TypedFilter
+
+object NostrVideoDataSource : NostrDataSource("VideoFeed") {
+    lateinit var account: Account
+
+    fun createContextualFilter(): TypedFilter? {
+        val follows = account.selectedUsersFollowList(account.defaultStoriesFollowList)
+
+        val followKeys = follows?.map {
+            it.substring(0, 6)
+        }
+
+        return TypedFilter(
+            types = setOf(FeedType.GLOBAL),
+            filter = JsonFilter(
+                authors = followKeys,
+                kinds = listOf(FileHeaderEvent.kind, FileStorageHeaderEvent.kind),
+                limit = 200
+            )
+        )
+    }
+
+    fun createFollowTagsFilter(): TypedFilter? {
+        val hashToLoad = account.selectedTagsFollowList(account.defaultStoriesFollowList)
+
+        if (hashToLoad.isNullOrEmpty()) 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
+            )
+        )
+    }
+
+    val videoFeedChannel = requestNewChannel()
+
+    override fun updateChannelFilters() {
+        videoFeedChannel.typedFilters = listOfNotNull(createContextualFilter(), createFollowTagsFilter()).ifEmpty { null }
+    }
+}

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

@@ -1,7 +1,7 @@
 package com.vitorpamplona.amethyst.service.model
 
 import android.util.Log
-import com.vitorpamplona.amethyst.model.toByteArray
+import com.vitorpamplona.amethyst.model.hexToByteArray
 import com.vitorpamplona.amethyst.model.toHexKey
 import com.vitorpamplona.amethyst.service.nip19.Tlv
 import fr.acinq.secp256k1.Hex
@@ -14,7 +14,7 @@ data class ATag(val kind: Int, val pubKeyHex: String, val dTag: String, val rela
 
     fun toNAddr(): String {
         val kind = kind.toByteArray()
-        val author = pubKeyHex.toByteArray()
+        val author = pubKeyHex.hexToByteArray()
         val dTag = dTag.toByteArray(Charsets.UTF_8)
         val relay = relay?.toByteArray(Charsets.UTF_8)
 

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

@@ -10,13 +10,9 @@ class BadgeAwardEvent(
     content: String,
     sig: HexKey
 ) : Event(id, pubKey, createdAt, kind, tags, content, sig) {
-    fun awardees() = tags.filter { it.firstOrNull() == "p" }.mapNotNull { it.getOrNull(1) }
-    fun awardDefinition() = tags.filter { it.firstOrNull() == "a" }.mapNotNull {
-        val aTagValue = it.getOrNull(1)
-        val relay = it.getOrNull(2)
+    fun awardees() = taggedUsers()
 
-        if (aTagValue != null) ATag.parse(aTagValue, relay) else null
-    }
+    fun awardDefinition() = taggedAddresses()
 
     companion object {
         const val kind = 8

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

@@ -10,13 +10,13 @@ class BadgeDefinitionEvent(
     content: String,
     sig: HexKey
 ) : Event(id, pubKey, createdAt, kind, tags, content, sig) {
-    fun dTag() = tags.filter { it.firstOrNull() == "d" }.mapNotNull { it.getOrNull(1) }.firstOrNull() ?: ""
+    fun dTag() = tags.firstOrNull { it.size > 1 && it[0] == "d" }?.get(1) ?: ""
     fun address() = ATag(kind, pubKey, dTag(), null)
 
-    fun name() = tags.filter { it.firstOrNull() == "name" }.mapNotNull { it.getOrNull(1) }.firstOrNull()
-    fun thumb() = tags.filter { it.firstOrNull() == "thumb" }.mapNotNull { it.getOrNull(1) }.firstOrNull()
-    fun image() = tags.filter { it.firstOrNull() == "image" }.mapNotNull { it.getOrNull(1) }.firstOrNull()
-    fun description() = tags.filter { it.firstOrNull() == "description" }.mapNotNull { it.getOrNull(1) }.firstOrNull()
+    fun name() = tags.firstOrNull { it.size > 1 && it[0] == "name" }?.get(1)
+    fun thumb() = tags.firstOrNull { it.size > 1 && it[0] == "thumb" }?.get(1)
+    fun image() = tags.firstOrNull { it.size > 1 && it[0] == "image" }?.get(1)
+    fun description() = tags.firstOrNull { it.size > 1 && it[0] == "description" }?.get(1)
 
     companion object {
         const val kind = 30009

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

@@ -1,7 +1,10 @@
 package com.vitorpamplona.amethyst.service.model
 
+import android.util.Log
 import com.vitorpamplona.amethyst.model.HexKey
 import com.vitorpamplona.amethyst.model.tagSearch
+import com.vitorpamplona.amethyst.service.nip19.Nip19
+import com.vitorpamplona.amethyst.service.nip19.Nip19.nip19regex
 
 open class BaseTextNoteEvent(
     id: HexKey,
@@ -31,6 +34,29 @@ open class BaseTextNoteEvent(
             } catch (e: Exception) {
             }
         }
+
+        val matcher2 = nip19regex.matcher(content)
+        while (matcher2.find()) {
+            val uriScheme = matcher2.group(1) // nostr:
+            val type = matcher2.group(2) // npub1
+            val key = matcher2.group(3) // bech32
+            val additionalChars = matcher2.group(4) // additional chars
+
+            try {
+                val parsed = Nip19.parseComponents(uriScheme, type, key, additionalChars)
+
+                if (parsed != null) {
+                    val tag = tags.firstOrNull { it.size > 1 && it[1] == parsed.hex }
+
+                    if (tag != null && tag[0] == "p") {
+                        returningList.add(tag[1])
+                    }
+                }
+            } catch (e: Exception) {
+                Log.w("Unable to parse cited users that matched a NIP19 regex", e)
+            }
+        }
+
         citedUsersCache = returningList
         return returningList
     }
@@ -51,6 +77,31 @@ open class BaseTextNoteEvent(
             } catch (e: Exception) {
             }
         }
+
+        val matcher2 = nip19regex.matcher(content)
+        while (matcher2.find()) {
+            val uriScheme = matcher2.group(1) // nostr:
+            val type = matcher2.group(2) // npub1
+            val key = matcher2.group(3) // bech32
+            val additionalChars = matcher2.group(4) // additional chars
+
+            val parsed = Nip19.parseComponents(uriScheme, type, key, additionalChars)
+
+            if (parsed != null) {
+                try {
+                    val tag = tags.firstOrNull { it.size > 1 && it[1] == parsed.hex }
+
+                    if (tag != null && tag[0] == "e") {
+                        citations.add(tag[1])
+                    }
+                    if (tag != null && tag[0] == "a") {
+                        citations.add(tag[1])
+                    }
+                } catch (e: Exception) {
+                }
+            }
+        }
+
         return citations
     }
 

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

@@ -1,9 +1,6 @@
 package com.vitorpamplona.amethyst.service.model
 
-import android.util.Log
-import com.google.gson.reflect.TypeToken
 import com.vitorpamplona.amethyst.model.HexKey
-import com.vitorpamplona.amethyst.model.toByteArray
 import com.vitorpamplona.amethyst.model.toHexKey
 import nostr.postr.Utils
 import java.util.Date
@@ -15,50 +12,7 @@ class BookmarkListEvent(
     tags: List<List<String>>,
     content: String,
     sig: HexKey
-) : Event(id, pubKey, createdAt, kind, tags, content, sig) {
-    fun dTag() = tags.filter { it.firstOrNull() == "d" }.mapNotNull { it.getOrNull(1) }.firstOrNull() ?: ""
-    fun address() = ATag(kind, pubKey, dTag(), null)
-
-    fun category() = dTag()
-    fun bookmarkedPosts() = tags.filter { it[0] == "e" }.mapNotNull { it.getOrNull(1) }
-
-    fun plainContent(privKey: ByteArray): String? {
-        return try {
-            val sharedSecret = Utils.getSharedSecret(privKey, pubKey.toByteArray())
-
-            return Utils.decrypt(content, sharedSecret)
-        } catch (e: Exception) {
-            Log.w("BookmarkList", "Error decrypting the message ${e.message}")
-            null
-        }
-    }
-
-    @Transient
-    private var privateTagsCache: List<List<String>>? = null
-
-    fun privateTags(privKey: ByteArray): List<List<String>>? {
-        if (privateTagsCache != null) {
-            return privateTagsCache
-        }
-
-        privateTagsCache = try {
-            gson.fromJson(plainContent(privKey), object : TypeToken<List<List<String>>>() {}.type)
-        } catch (e: Throwable) {
-            Log.w("BookmarkList", "Error parsing the JSON ${e.message}")
-            null
-        }
-        return privateTagsCache
-    }
-
-    fun privateTaggedUsers(privKey: ByteArray) = privateTags(privKey)?.filter { it.firstOrNull() == "p" }?.mapNotNull { it.getOrNull(1) }
-    fun privateTaggedEvents(privKey: ByteArray) = privateTags(privKey)?.filter { it.firstOrNull() == "e" }?.mapNotNull { it.getOrNull(1) }
-    fun privateTaggedAddresses(privKey: ByteArray) = privateTags(privKey)?.filter { it.firstOrNull() == "a" }?.mapNotNull {
-        val aTagValue = it.getOrNull(1)
-        val relay = it.getOrNull(2)
-
-        if (aTagValue != null) ATag.parse(aTagValue, relay) else null
-    }
-
+) : GeneralListEvent(id, pubKey, createdAt, kind, tags, content, sig) {
     companion object {
         const val kind = 30001
 
@@ -77,24 +31,7 @@ class BookmarkListEvent(
             createdAt: Long = Date().time / 1000
         ): BookmarkListEvent {
             val pubKey = Utils.pubkeyCreate(privateKey)
-
-            val privTags = mutableListOf<List<String>>()
-            privEvents?.forEach {
-                privTags.add(listOf("e", it))
-            }
-            privUsers?.forEach {
-                privTags.add(listOf("p", it))
-            }
-            privAddresses?.forEach {
-                privTags.add(listOf("a", it.toTag()))
-            }
-            val msg = gson.toJson(privTags)
-
-            val content = Utils.encrypt(
-                msg,
-                privateKey,
-                pubKey
-            )
+            val content = createPrivateTags(privEvents, privUsers, privAddresses, privateKey, pubKey)
 
             val tags = mutableListOf<List<String>>()
             tags.add(listOf("d", name))

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

@@ -20,7 +20,7 @@ class ChannelMessageEvent(
     companion object {
         const val kind = 42
 
-        fun create(message: String, channel: String, replyTos: List<String>? = null, mentions: List<String>? = null, privateKey: ByteArray, createdAt: Long = Date().time / 1000): ChannelMessageEvent {
+        fun create(message: String, channel: String, replyTos: List<String>? = null, mentions: List<String>? = null, zapReceiver: String?, privateKey: ByteArray, createdAt: Long = Date().time / 1000): ChannelMessageEvent {
             val content = message
             val pubKey = Utils.pubkeyCreate(privateKey).toHexKey()
             val tags = mutableListOf(
@@ -32,6 +32,9 @@ class ChannelMessageEvent(
             mentions?.forEach {
                 tags.add(listOf("p", it))
             }
+            zapReceiver?.let {
+                tags.add(listOf("zap", it))
+            }
 
             val id = generateId(pubKey, createdAt, kind, tags, content)
             val sig = Utils.sign(id, privateKey)

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

@@ -38,9 +38,15 @@ open class Event(
 
     override fun toJson(): String = gson.toJson(this)
 
+    fun hasAnyTaggedUser() = tags.any { it.size > 1 && it[0] == "p" }
+
     fun taggedUsers() = tags.filter { it.size > 1 && it[0] == "p" }.map { it[1] }
     fun taggedEvents() = tags.filter { it.size > 1 && it[0] == "e" }.map { it[1] }
 
+    fun taggedUrls() = tags.filter { it.size > 1 && it[0] == "r" }.map { it[1] }
+
+    override fun zapAddress() = tags.firstOrNull { it.size > 1 && it[0] == "zap" }?.get(1)
+
     fun taggedAddresses() = tags.filter { it.size > 1 && it[0] == "a" }.mapNotNull {
         val aTagValue = it[1]
         val relay = it.getOrNull(2)
@@ -79,7 +85,7 @@ open class Event(
 
     override fun getReward(): BigDecimal? {
         return try {
-            tags.filter { it.firstOrNull() == "reward" }.mapNotNull { it.getOrNull(1)?.let { BigDecimal(it) } }.firstOrNull()
+            tags.firstOrNull { it.size > 1 && it[0] == "reward" }?.get(1)?.let { BigDecimal(it) }
         } catch (e: Exception) {
             null
         }
@@ -203,6 +209,8 @@ open class Event(
             .registerTypeAdapter(Event::class.java, EventDeserializer())
             .registerTypeAdapter(ByteArray::class.java, ByteArraySerializer())
             .registerTypeAdapter(ByteArray::class.java, ByteArrayDeserializer())
+            .registerTypeAdapter(Response::class.java, ResponseDeserializer())
+            .registerTypeAdapter(Request::class.java, RequestDeserializer())
             .create()
 
         fun fromJson(json: String, lenient: Boolean = false): Event = gson.fromJson(json, Event::class.java).getRefinedEvent(lenient)
@@ -222,11 +230,17 @@ open class Event(
             ContactListEvent.kind -> ContactListEvent(id, pubKey, createdAt, tags, content, sig)
             DeletionEvent.kind -> DeletionEvent(id, pubKey, createdAt, tags, content, sig)
 
+            FileHeaderEvent.kind -> FileHeaderEvent(id, pubKey, createdAt, tags, content, sig)
+            FileStorageEvent.kind -> FileStorageEvent(id, pubKey, createdAt, tags, content, sig)
+            FileStorageHeaderEvent.kind -> FileStorageHeaderEvent(id, pubKey, createdAt, tags, content, sig)
+            HighlightEvent.kind -> HighlightEvent(id, pubKey, createdAt, tags, content, sig)
             LnZapEvent.kind -> LnZapEvent(id, pubKey, createdAt, tags, content, sig)
             LnZapPaymentRequestEvent.kind -> LnZapPaymentRequestEvent(id, pubKey, createdAt, tags, content, sig)
+            LnZapPaymentResponseEvent.kind -> LnZapPaymentResponseEvent(id, pubKey, createdAt, tags, content, sig)
             LnZapRequestEvent.kind -> LnZapRequestEvent(id, pubKey, createdAt, tags, content, sig)
             LongTextNoteEvent.kind -> LongTextNoteEvent(id, pubKey, createdAt, tags, content, sig)
             MetadataEvent.kind -> MetadataEvent(id, pubKey, createdAt, tags, content, sig)
+            PeopleListEvent.kind -> PeopleListEvent(id, pubKey, createdAt, tags, content, sig)
             PollNoteEvent.kind -> PollNoteEvent(id, pubKey, createdAt, tags, content, sig)
             PrivateDmEvent.kind -> PrivateDmEvent(id, pubKey, createdAt, tags, content, sig)
             ReactionEvent.kind -> ReactionEvent(id, pubKey, createdAt, tags, content, sig)

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

@@ -33,4 +33,6 @@ interface EventInterface {
 
     fun getReward(): BigDecimal?
     fun getPoWRank(): Int
+
+    fun zapAddress(): String?
 }

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

@@ -0,0 +1,75 @@
+package com.vitorpamplona.amethyst.service.model
+
+import com.vitorpamplona.amethyst.model.HexKey
+import com.vitorpamplona.amethyst.model.toHexKey
+import nostr.postr.Utils
+import java.util.Date
+
+class FileHeaderEvent(
+    id: HexKey,
+    pubKey: HexKey,
+    createdAt: Long,
+    tags: List<List<String>>,
+    content: String,
+    sig: HexKey
+) : Event(id, pubKey, createdAt, kind, tags, content, sig) {
+
+    fun url() = tags.firstOrNull { it.size > 1 && it[0] == URL }?.get(1)
+    fun encryptionKey() = tags.firstOrNull { it.size > 2 && it[0] == ENCRYPTION_KEY }?.let { AESGCM(it[1], it[2]) }
+    fun mimeType() = tags.firstOrNull { it.size > 1 && it[0] == MIME_TYPE }?.get(1)
+    fun hash() = tags.firstOrNull { it.size > 1 && it[0] == HASH }?.get(1)
+    fun size() = tags.firstOrNull { it.size > 1 && it[0] == FILE_SIZE }?.get(1)
+    fun dimensions() = tags.firstOrNull { it.size > 1 && it[0] == DIMENSION }?.get(1)
+    fun magnetURI() = tags.firstOrNull { it.size > 1 && it[0] == MAGNET_URI }?.get(1)
+    fun torrentInfoHash() = tags.firstOrNull { it.size > 1 && it[0] == TORRENT_INFOHASH }?.get(1)
+    fun blurhash() = tags.firstOrNull { it.size > 1 && it[0] == BLUR_HASH }?.get(1)
+
+    companion object {
+        const val kind = 1063
+
+        private const val URL = "url"
+        private const val ENCRYPTION_KEY = "aes-256-gcm"
+        private const val MIME_TYPE = "m"
+        private const val FILE_SIZE = "size"
+        private const val DIMENSION = "dim"
+        private const val HASH = "x"
+        private const val MAGNET_URI = "magnet"
+        private const val TORRENT_INFOHASH = "i"
+        private const val BLUR_HASH = "blurhash"
+
+        fun create(
+            url: String,
+            mimeType: String? = null,
+            description: String? = null,
+            hash: String? = null,
+            size: String? = null,
+            dimensions: String? = null,
+            blurhash: String? = null,
+            magnetURI: String? = null,
+            torrentInfoHash: String? = null,
+            encryptionKey: AESGCM? = null,
+            privateKey: ByteArray,
+            createdAt: Long = Date().time / 1000
+        ): FileHeaderEvent {
+            val tags = listOfNotNull(
+                listOf(URL, url),
+                mimeType?.let { listOf(MIME_TYPE, mimeType) },
+                hash?.let { listOf(HASH, it) },
+                size?.let { listOf(FILE_SIZE, it) },
+                dimensions?.let { listOf(DIMENSION, it) },
+                blurhash?.let { listOf(BLUR_HASH, it) },
+                magnetURI?.let { listOf(MAGNET_URI, it) },
+                torrentInfoHash?.let { listOf(TORRENT_INFOHASH, it) },
+                encryptionKey?.let { listOf(ENCRYPTION_KEY, it.key, it.nonce) }
+            )
+
+            val content = description ?: ""
+            val pubKey = Utils.pubkeyCreate(privateKey).toHexKey()
+            val id = generateId(pubKey, createdAt, kind, tags, content)
+            val sig = Utils.sign(id, privateKey)
+            return FileHeaderEvent(id.toHexKey(), pubKey, createdAt, tags, content, sig.toHexKey())
+        }
+    }
+}
+
+data class AESGCM(val key: String, val nonce: String)

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

@@ -0,0 +1,58 @@
+package com.vitorpamplona.amethyst.service.model
+
+import android.util.Log
+import com.vitorpamplona.amethyst.model.HexKey
+import com.vitorpamplona.amethyst.model.toHexKey
+import nostr.postr.Utils
+import java.util.Base64
+import java.util.Date
+
+class FileStorageEvent(
+    id: HexKey,
+    pubKey: HexKey,
+    createdAt: Long,
+    tags: List<List<String>>,
+    content: String,
+    sig: HexKey
+) : Event(id, pubKey, createdAt, kind, tags, content, sig) {
+
+    fun type() = tags.firstOrNull { it.size > 1 && it[0] == TYPE }?.get(1)
+    fun decryptKey() = tags.firstOrNull { it.size > 2 && it[0] == DECRYPT }?.let { AESGCM(it[1], it[2]) }
+
+    fun decode(): ByteArray? {
+        return try {
+            Base64.getDecoder().decode(content)
+        } catch (e: Exception) {
+            Log.e("FileStorageEvent", "Unable to decode base 64 ${e.message} $content")
+            null
+        }
+    }
+
+    companion object {
+        const val kind = 1064
+
+        private const val TYPE = "type"
+        private const val DECRYPT = "decrypt"
+
+        fun encode(bytes: ByteArray): String {
+            return Base64.getEncoder().encodeToString(bytes)
+        }
+
+        fun create(
+            mimeType: String,
+            data: ByteArray,
+            privateKey: ByteArray,
+            createdAt: Long = Date().time / 1000
+        ): FileStorageEvent {
+            val tags = listOfNotNull(
+                listOf(TYPE, mimeType)
+            )
+
+            val content = encode(data)
+            val pubKey = Utils.pubkeyCreate(privateKey).toHexKey()
+            val id = generateId(pubKey, createdAt, kind, tags, content)
+            val sig = Utils.sign(id, privateKey)
+            return FileStorageEvent(id.toHexKey(), pubKey, createdAt, tags, content, sig.toHexKey())
+        }
+    }
+}

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

@@ -0,0 +1,73 @@
+package com.vitorpamplona.amethyst.service.model
+
+import com.vitorpamplona.amethyst.model.HexKey
+import com.vitorpamplona.amethyst.model.toHexKey
+import nostr.postr.Utils
+import java.util.Date
+
+class FileStorageHeaderEvent(
+    id: HexKey,
+    pubKey: HexKey,
+    createdAt: Long,
+    tags: List<List<String>>,
+    content: String,
+    sig: HexKey
+) : Event(id, pubKey, createdAt, kind, tags, content, sig) {
+
+    fun dataEventId() = tags.firstOrNull { it.size > 1 && it[0] == "e" }?.get(1)
+
+    fun encryptionKey() = tags.firstOrNull { it.size > 2 && it[0] == ENCRYPTION_KEY }?.let { AESGCM(it[1], it[2]) }
+    fun mimeType() = tags.firstOrNull { it.size > 1 && it[0] == MIME_TYPE }?.get(1)
+    fun hash() = tags.firstOrNull { it.size > 1 && it[0] == HASH }?.get(1)
+    fun size() = tags.firstOrNull { it.size > 1 && it[0] == FILE_SIZE }?.get(1)
+    fun dimensions() = tags.firstOrNull { it.size > 1 && it[0] == DIMENSION }?.get(1)
+    fun magnetURI() = tags.firstOrNull { it.size > 1 && it[0] == MAGNET_URI }?.get(1)
+    fun torrentInfoHash() = tags.firstOrNull { it.size > 1 && it[0] == TORRENT_INFOHASH }?.get(1)
+    fun blurhash() = tags.firstOrNull { it.size > 1 && it[0] == BLUR_HASH }?.get(1)
+
+    companion object {
+        const val kind = 1065
+
+        private const val ENCRYPTION_KEY = "aes-256-gcm"
+        private const val MIME_TYPE = "m"
+        private const val FILE_SIZE = "size"
+        private const val DIMENSION = "dim"
+        private const val HASH = "x"
+        private const val MAGNET_URI = "magnet"
+        private const val TORRENT_INFOHASH = "i"
+        private const val BLUR_HASH = "blurhash"
+
+        fun create(
+            storageEvent: FileStorageEvent,
+            mimeType: String? = null,
+            description: String? = null,
+            hash: String? = null,
+            size: String? = null,
+            dimensions: String? = null,
+            blurhash: String? = null,
+            magnetURI: String? = null,
+            torrentInfoHash: String? = null,
+            encryptionKey: AESGCM? = null,
+            privateKey: ByteArray,
+            createdAt: Long = Date().time / 1000
+        ): FileStorageHeaderEvent {
+            val tags = listOfNotNull(
+                listOf("e", storageEvent.id),
+                mimeType?.let { listOf(MIME_TYPE, mimeType) },
+                hash?.let { listOf(HASH, it) },
+                size?.let { listOf(FILE_SIZE, it) },
+                dimensions?.let { listOf(DIMENSION, it) },
+                blurhash?.let { listOf(BLUR_HASH, it) },
+                magnetURI?.let { listOf(MAGNET_URI, it) },
+                torrentInfoHash?.let { listOf(TORRENT_INFOHASH, it) },
+                encryptionKey?.let { listOf(ENCRYPTION_KEY, it.key, it.nonce) }
+            )
+
+            val content = description ?: ""
+            val pubKey = Utils.pubkeyCreate(privateKey).toHexKey()
+            val id = generateId(pubKey, createdAt, kind, tags, content)
+            val sig = Utils.sign(id, privateKey)
+            return FileStorageHeaderEvent(id.toHexKey(), pubKey, createdAt, tags, content, sig.toHexKey())
+        }
+    }
+}

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

@@ -0,0 +1,90 @@
+package com.vitorpamplona.amethyst.service.model
+
+import android.util.Log
+import com.google.gson.reflect.TypeToken
+import com.vitorpamplona.amethyst.model.HexKey
+import com.vitorpamplona.amethyst.model.hexToByteArray
+import nostr.postr.Utils
+
+abstract class GeneralListEvent(
+    id: HexKey,
+    pubKey: HexKey,
+    createdAt: Long,
+    kind: Int,
+    tags: List<List<String>>,
+    content: String,
+    sig: HexKey
+) : Event(id, pubKey, createdAt, kind, tags, content, sig) {
+    fun dTag() = tags.filter { it.firstOrNull() == "d" }.mapNotNull { it.getOrNull(1) }.firstOrNull() ?: ""
+    fun address() = ATag(kind, pubKey, dTag(), null)
+
+    fun category() = dTag()
+    fun bookmarkedPosts() = taggedEvents()
+    fun bookmarkedPeople() = taggedUsers()
+
+    fun plainContent(privKey: ByteArray): String? {
+        return try {
+            val sharedSecret = Utils.getSharedSecret(privKey, pubKey.hexToByteArray())
+
+            return Utils.decrypt(content, sharedSecret)
+        } catch (e: Exception) {
+            Log.w("GeneralList", "Error decrypting the message ${e.message}")
+            null
+        }
+    }
+
+    @Transient
+    private var privateTagsCache: List<List<String>>? = null
+
+    fun privateTags(privKey: ByteArray): List<List<String>>? {
+        if (privateTagsCache != null) {
+            return privateTagsCache
+        }
+
+        privateTagsCache = try {
+            gson.fromJson(plainContent(privKey), object : TypeToken<List<List<String>>>() {}.type)
+        } catch (e: Throwable) {
+            Log.w("GeneralList", "Error parsing the JSON ${e.message}")
+            null
+        }
+        return privateTagsCache
+    }
+
+    fun privateTaggedUsers(privKey: ByteArray) = privateTags(privKey)?.filter { it.size > 1 && it[0] == "p" }?.map { it[1] }
+    fun privateTaggedEvents(privKey: ByteArray) = privateTags(privKey)?.filter { it.size > 1 && it[0] == "e" }?.map { it[1] }
+    fun privateTaggedAddresses(privKey: ByteArray) = privateTags(privKey)?.filter { it.firstOrNull() == "a" }?.mapNotNull {
+        val aTagValue = it.getOrNull(1)
+        val relay = it.getOrNull(2)
+
+        if (aTagValue != null) ATag.parse(aTagValue, relay) else null
+    }
+
+    companion object {
+        fun createPrivateTags(
+            privEvents: List<String>? = null,
+            privUsers: List<String>? = null,
+            privAddresses: List<ATag>? = null,
+
+            privateKey: ByteArray,
+            pubKey: ByteArray
+        ): String {
+            val privTags = mutableListOf<List<String>>()
+            privEvents?.forEach {
+                privTags.add(listOf("e", it))
+            }
+            privUsers?.forEach {
+                privTags.add(listOf("p", it))
+            }
+            privAddresses?.forEach {
+                privTags.add(listOf("a", it.toTag()))
+            }
+            val msg = gson.toJson(privTags)
+
+            return Utils.encrypt(
+                msg,
+                privateKey,
+                pubKey
+            )
+        }
+    }
+}

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

@@ -0,0 +1,36 @@
+package com.vitorpamplona.amethyst.service.model
+
+import com.vitorpamplona.amethyst.model.HexKey
+import com.vitorpamplona.amethyst.model.toHexKey
+import nostr.postr.Utils
+import java.util.Date
+
+class HighlightEvent(
+    id: HexKey,
+    pubKey: HexKey,
+    createdAt: Long,
+    tags: List<List<String>>,
+    content: String,
+    sig: HexKey
+) : BaseTextNoteEvent(id, pubKey, createdAt, kind, tags, content, sig) {
+
+    fun inUrl() = taggedUrls().firstOrNull()
+    fun author() = taggedUsers().firstOrNull()
+    fun quote() = content
+
+    companion object {
+        const val kind = 9802
+
+        fun create(
+            msg: String,
+            privateKey: ByteArray,
+            createdAt: Long = Date().time / 1000
+        ): PollNoteEvent {
+            val pubKey = Utils.pubkeyCreate(privateKey).toHexKey()
+            val tags = mutableListOf<List<String>>()
+            val id = generateId(pubKey, createdAt, kind, tags, msg)
+            val sig = Utils.sign(id, privateKey)
+            return PollNoteEvent(id.toHexKey(), pubKey, createdAt, tags, msg, sig.toHexKey())
+        }
+    }
+}

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

@@ -16,7 +16,7 @@ class LnZapEvent(
     // This event is also kept in LocalCache (same object)
     @Transient val zapRequest: LnZapRequestEvent?
 
-    private fun containedPost(): LnZapRequestEvent? = try {
+    override fun containedPost(): LnZapRequestEvent? = try {
         description()?.ifBlank { null }?.let {
             fromJson(it, Client.lenient)
         } as? LnZapRequestEvent
@@ -53,12 +53,11 @@ class LnZapEvent(
             null
         }
     }
-
-    override fun message(): String {
+    override fun content(): String {
         return content
     }
 
-    private fun lnInvoice() = tags.firstOrNull { it.size > 1 && it[0] == "bolt11" }?.get(1)
+    fun lnInvoice() = tags.firstOrNull { it.size > 1 && it[0] == "bolt11" }?.get(1)
 
     private fun description() = tags.firstOrNull { it.size > 1 && it[0] == "description" }?.get(1)
 
@@ -68,7 +67,7 @@ class LnZapEvent(
 
     enum class ZapType() {
         PUBLIC,
-        PRIVATE, // not yet implemented
+        PRIVATE,
         ANONYMOUS,
         NONZAP
     }

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

@@ -16,5 +16,5 @@ interface LnZapEventInterface : EventInterface {
 
     fun amount(): BigDecimal?
 
-    fun message(): String
+    fun containedPost(): Event?
 }

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

@@ -1,10 +1,15 @@
 package com.vitorpamplona.amethyst.service.model
 
 import android.util.Log
+import com.google.gson.JsonDeserializationContext
+import com.google.gson.JsonDeserializer
+import com.google.gson.JsonElement
+import com.google.gson.JsonParseException
 import com.vitorpamplona.amethyst.model.HexKey
-import com.vitorpamplona.amethyst.model.toByteArray
+import com.vitorpamplona.amethyst.model.hexToByteArray
 import com.vitorpamplona.amethyst.model.toHexKey
 import nostr.postr.Utils
+import java.lang.reflect.Type
 import java.util.Date
 
 class LnZapPaymentRequestEvent(
@@ -16,11 +21,27 @@ class LnZapPaymentRequestEvent(
     sig: HexKey
 ) : Event(id, pubKey, createdAt, kind, tags, content, sig) {
 
-    fun lnInvoice(privKey: ByteArray): String? {
-        return try {
-            val sharedSecret = Utils.getSharedSecret(privKey, pubKey.toByteArray())
+    // Once one of an app user decrypts the payment, all users else can see it.
+    @Transient
+    private var lnInvoice: String? = null
 
-            return Utils.decrypt(content, sharedSecret)
+    fun walletServicePubKey() = tags.firstOrNull() { it.size > 1 && it[0] == "p" }?.get(1)
+
+    fun lnInvoice(privKey: ByteArray, pubkey: ByteArray): String? {
+        if (lnInvoice != null) {
+            return lnInvoice
+        }
+
+        return try {
+            val sharedSecret = Utils.getSharedSecret(privKey, pubkey)
+
+            val jsonText = Utils.decrypt(content, sharedSecret)
+
+            val payInvoiceMethod = gson.fromJson(jsonText, Request::class.java)
+
+            lnInvoice = (payInvoiceMethod as? PayInvoiceMethod)?.params?.invoice
+
+            return lnInvoice
         } catch (e: Exception) {
             Log.w("BookmarkList", "Error decrypting the message ${e.message}")
             null
@@ -37,11 +58,12 @@ class LnZapPaymentRequestEvent(
             createdAt: Long = Date().time / 1000
         ): LnZapPaymentRequestEvent {
             val pubKey = Utils.pubkeyCreate(privateKey)
+            val serializedRequest = gson.toJson(PayInvoiceMethod.create(lnInvoice))
 
             val content = Utils.encrypt(
-                lnInvoice,
+                serializedRequest,
                 privateKey,
-                walletServicePubkey.toByteArray()
+                walletServicePubkey.hexToByteArray()
             )
 
             val tags = mutableListOf<List<String>>()
@@ -53,3 +75,40 @@ class LnZapPaymentRequestEvent(
         }
     }
 }
+
+// REQUEST OBJECTS
+
+abstract class Request(var method: String? = null)
+
+// PayInvoice Call
+class PayInvoiceParams(var invoice: String? = null)
+
+class PayInvoiceMethod(var params: PayInvoiceParams? = null) : Request("pay_invoice") {
+
+    companion object {
+        fun create(bolt11: String): PayInvoiceMethod {
+            return PayInvoiceMethod(PayInvoiceParams(bolt11))
+        }
+    }
+}
+
+class RequestDeserializer :
+    JsonDeserializer<Request?> {
+    @Throws(JsonParseException::class)
+    override fun deserialize(
+        json: JsonElement,
+        typeOfT: Type,
+        context: JsonDeserializationContext
+    ): Request? {
+        val jsonObject = json.asJsonObject
+        val method = jsonObject.get("method")?.asString
+
+        if (method == "pay_invoice") {
+            return context.deserialize<PayInvoiceMethod>(jsonObject, PayInvoiceMethod::class.java)
+        }
+        return null
+    }
+
+    companion object {
+    }
+}

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

@@ -0,0 +1,139 @@
+package com.vitorpamplona.amethyst.service.model
+
+import android.util.Log
+import com.google.gson.JsonDeserializationContext
+import com.google.gson.JsonDeserializer
+import com.google.gson.JsonElement
+import com.google.gson.JsonParseException
+import com.google.gson.annotations.SerializedName
+import com.vitorpamplona.amethyst.model.HexKey
+import nostr.postr.Utils
+import java.lang.reflect.Type
+
+class LnZapPaymentResponseEvent(
+    id: HexKey,
+    pubKey: HexKey,
+    createdAt: Long,
+    tags: List<List<String>>,
+    content: String,
+    sig: HexKey
+) : Event(id, pubKey, createdAt, kind, tags, content, sig) {
+
+    // Once one of an app user decrypts the payment, all users else can see it.
+    @Transient
+    private var response: Response? = null
+
+    fun requestAuthor() = tags.firstOrNull() { it.size > 1 && it[0] == "p" }?.get(1)
+    fun requestId() = tags.firstOrNull() { it.size > 1 && it[0] == "e" }?.get(1)
+
+    private fun decrypt(privKey: ByteArray, pubKey: ByteArray): String? {
+        return try {
+            val sharedSecret = Utils.getSharedSecret(privKey, pubKey)
+
+            val retVal = Utils.decrypt(content, sharedSecret)
+
+            if (retVal.startsWith(PrivateDmEvent.nip18Advertisement)) {
+                retVal.substring(16)
+            } else {
+                retVal
+            }
+        } catch (e: Exception) {
+            Log.w("PrivateDM", "Error decrypting the message ${e.message}")
+            null
+        }
+    }
+
+    fun response(privKey: ByteArray, pubKey: ByteArray): Response? {
+        if (response != null) response
+
+        return try {
+            if (content.isNotEmpty()) {
+                val decrypted = decrypt(privKey, pubKey)
+                response = gson.fromJson(decrypted, Response::class.java)
+                response
+            } else {
+                null
+            }
+        } catch (e: Exception) {
+            Log.w("LnZapPaymentResponseEvent", "Can't parse content as a payment response: $content", e)
+            null
+        }
+    }
+
+    companion object {
+        const val kind = 23195
+    }
+}
+
+// RESPONSE OBJECTS
+abstract class Response(
+    @SerializedName("result_type")
+    val resultType: String
+)
+
+// PayInvoice Call
+
+class PayInvoiceSuccessResponse(val result: PayInvoiceResultParams? = null) :
+    Response("pay_invoice") {
+    class PayInvoiceResultParams(val preimage: String)
+}
+
+class PayInvoiceErrorResponse(val error: PayInvoiceErrorParams? = null) :
+    Response("pay_invoice") {
+    class PayInvoiceErrorParams(val code: ErrorType?, val message: String?)
+
+    enum class ErrorType {
+        @SerializedName(value = "rate_limited", alternate = ["RATE_LIMITED"])
+        RATE_LIMITED, // The client is sending commands too fast. It should retry in a few seconds.
+        @SerializedName(value = "not_implemented", alternate = ["NOT_IMPLEMENTED"])
+        NOT_IMPLEMENTED, // The command is not known or is intentionally not implemented.
+        @SerializedName(value = "insufficient_balance", alternate = ["INSUFFICIENT_BALANCE"])
+        INSUFFICIENT_BALANCE, // The wallet does not have enough funds to cover a fee reserve or the payment amount.
+        @SerializedName(value = "quota_exceeded", alternate = ["QUOTA_EXCEEDED"])
+        QUOTA_EXCEEDED, // The wallet has exceeded its spending quota.
+        @SerializedName(value = "restricted", alternate = ["RESTRICTED"])
+        RESTRICTED, // This public key is not allowed to do this operation.
+        @SerializedName(value = "unauthorized", alternate = ["UNAUTHORIZED"])
+        UNAUTHORIZED, // This public key has no wallet connected.
+        @SerializedName(value = "internal", alternate = ["INTERNAL"])
+        INTERNAL, // An internal error.
+        @SerializedName(value = "other", alternate = ["OTHER"])
+        OTHER // Other error.
+    }
+}
+
+class ResponseDeserializer :
+    JsonDeserializer<Response?> {
+    @Throws(JsonParseException::class)
+    override fun deserialize(
+        json: JsonElement,
+        typeOfT: Type,
+        context: JsonDeserializationContext
+    ): Response? {
+        val jsonObject = json.asJsonObject
+        val resultType = jsonObject.get("result_type")?.asString
+
+        if (resultType == "pay_invoice") {
+            val result = jsonObject.get("result")?.asJsonObject
+            val error = jsonObject.get("error")?.asJsonObject
+            if (result != null) {
+                return context.deserialize<PayInvoiceSuccessResponse>(jsonObject, PayInvoiceSuccessResponse::class.java)
+            }
+            if (error != null) {
+                return context.deserialize<PayInvoiceErrorResponse>(jsonObject, PayInvoiceErrorResponse::class.java)
+            }
+        } else {
+            // tries to guess
+            if (jsonObject.get("result")?.asJsonObject?.get("preimage") != null) {
+                return context.deserialize<PayInvoiceSuccessResponse>(jsonObject, PayInvoiceSuccessResponse::class.java)
+            }
+            if (jsonObject.get("error")?.asJsonObject?.get("code") != null) {
+                return context.deserialize<PayInvoiceErrorResponse>(jsonObject, PayInvoiceErrorResponse::class.java)
+            }
+        }
+        return null
+    }
+
+    companion object {
+    }
+}

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

@@ -1,9 +1,15 @@
 package com.vitorpamplona.amethyst.service.model
 
-import com.vitorpamplona.amethyst.model.HexKey
-import com.vitorpamplona.amethyst.model.toHexKey
+import com.vitorpamplona.amethyst.model.*
+import nostr.postr.Bech32
 import nostr.postr.Utils
-import java.util.Date
+import java.nio.charset.Charset
+import java.security.SecureRandom
+import java.util.*
+import javax.crypto.BadPaddingException
+import javax.crypto.Cipher
+import javax.crypto.spec.IvParameterSpec
+import javax.crypto.spec.SecretKeySpec
 
 class LnZapRequestEvent(
     id: HexKey,
@@ -14,10 +20,37 @@ class LnZapRequestEvent(
     sig: HexKey
 ) : Event(id, pubKey, createdAt, kind, tags, content, sig) {
 
+    @Transient
+    private var privateZapEvent: Event? = null
+
     fun zappedPost() = tags.filter { it.size > 1 && it[0] == "e" }.map { it[1] }
 
     fun zappedAuthor() = tags.filter { it.size > 1 && it[0] == "p" }.map { it[1] }
 
+    fun isPrivateZap() = tags.any { t -> t.size >= 2 && t[0] == "anon" && t[1].isNotBlank() }
+
+    fun getPrivateZapEvent(loggedInUserPrivKey: ByteArray, pubKey: HexKey): Event? {
+        if (privateZapEvent != null) return privateZapEvent
+
+        val anonTag = tags.firstOrNull { t -> t.size >= 2 && t[0] == "anon" }
+        if (anonTag != null) {
+            val encnote = anonTag[1]
+            if (encnote.isNotBlank()) {
+                try {
+                    val note = decryptPrivateZapMessage(encnote, loggedInUserPrivKey, pubKey.hexToByteArray())
+                    val decryptedEvent = fromJson(note)
+                    if (decryptedEvent.kind == 9733) {
+                        privateZapEvent = decryptedEvent
+                        return privateZapEvent
+                    }
+                } catch (e: Exception) {
+                    e.printStackTrace()
+                }
+            }
+        }
+        return null
+    }
+
     companion object {
         const val kind = 9734
 
@@ -30,7 +63,7 @@ class LnZapRequestEvent(
             zapType: LnZapEvent.ZapType,
             createdAt: Long = Date().time / 1000
         ): LnZapRequestEvent {
-            val content = message
+            var content = message
             var privkey = privateKey
             var pubKey = Utils.pubkeyCreate(privateKey).toHexKey()
             var tags = listOf(
@@ -48,6 +81,14 @@ class LnZapRequestEvent(
                 tags = tags + listOf(listOf("anon", ""))
                 privkey = Utils.privkeyCreate()
                 pubKey = Utils.pubkeyCreate(privkey).toHexKey()
+            } else if (zapType == LnZapEvent.ZapType.PRIVATE) {
+                var encryptionPrivateKey = createEncryptionPrivateKey(privateKey.toHexKey(), originalNote.id(), createdAt)
+                var noteJson = (create(privkey, 9733, listOf(tags[0], tags[1]), message)).toJson()
+                var encryptedContent = encryptPrivateZapMessage(noteJson, encryptionPrivateKey, originalNote.pubKey().hexToByteArray())
+                tags = tags + listOf(listOf("anon", encryptedContent))
+                content = "" // make sure public content is empty, as the content is encrypted
+                privkey = encryptionPrivateKey // sign event with generated privkey
+                pubKey = Utils.pubkeyCreate(encryptionPrivateKey).toHexKey() // updated event with according pubkey
             }
             val id = generateId(pubKey, createdAt, kind, tags, content)
             val sig = Utils.sign(id, privkey)
@@ -62,7 +103,7 @@ class LnZapRequestEvent(
             zapType: LnZapEvent.ZapType,
             createdAt: Long = Date().time / 1000
         ): LnZapRequestEvent {
-            val content = message
+            var content = message
             var privkey = privateKey
             var pubKey = Utils.pubkeyCreate(privateKey).toHexKey()
             var tags = listOf(
@@ -70,52 +111,69 @@ class LnZapRequestEvent(
                 listOf("relays") + relays
             )
             if (zapType == LnZapEvent.ZapType.ANONYMOUS) {
-                tags = tags + listOf(listOf("anon", ""))
                 privkey = Utils.privkeyCreate()
                 pubKey = Utils.pubkeyCreate(privkey).toHexKey()
+                tags = tags + listOf(listOf("anon", ""))
+            } else if (zapType == LnZapEvent.ZapType.PRIVATE) {
+                var encryptionPrivateKey = createEncryptionPrivateKey(privateKey.toHexKey(), userHex, createdAt)
+                var noteJson = (create(privkey, 9733, listOf(tags[0], tags[1]), message)).toJson()
+                var encryptedContent = encryptPrivateZapMessage(noteJson, encryptionPrivateKey, userHex.hexToByteArray())
+                tags = tags + listOf(listOf("anon", encryptedContent))
+                content = ""
+                privkey = encryptionPrivateKey
+                pubKey = Utils.pubkeyCreate(encryptionPrivateKey).toHexKey()
             }
-
             val id = generateId(pubKey, createdAt, kind, tags, content)
             val sig = Utils.sign(id, privkey)
             return LnZapRequestEvent(id.toHexKey(), pubKey, createdAt, tags, content, sig.toHexKey())
         }
+
+        fun createEncryptionPrivateKey(privkey: String, id: String, createdAt: Long): ByteArray {
+            var str = privkey + id + createdAt.toString()
+            var strbyte = str.toByteArray(Charset.forName("utf-8"))
+            return sha256.digest(strbyte)
+        }
+
+        private fun encryptPrivateZapMessage(msg: String, privkey: ByteArray, pubkey: ByteArray): String {
+            var sharedSecret = Utils.getSharedSecret(privkey, pubkey)
+            val iv = ByteArray(16)
+            SecureRandom().nextBytes(iv)
+
+            val keySpec = SecretKeySpec(sharedSecret, "AES")
+            val ivSpec = IvParameterSpec(iv)
+
+            var utf8message = msg.toByteArray(Charset.forName("utf-8"))
+            val cipher = Cipher.getInstance("AES/CBC/PKCS5Padding")
+            cipher.init(Cipher.ENCRYPT_MODE, keySpec, ivSpec)
+            val encryptedMsg = cipher.doFinal(utf8message)
+
+            val encryptedMsgBech32 = Bech32.encode("pzap", Bech32.eight2five(encryptedMsg), Bech32.Encoding.Bech32)
+            val ivBech32 = Bech32.encode("iv", Bech32.eight2five(iv), Bech32.Encoding.Bech32)
+
+            return encryptedMsgBech32 + "_" + ivBech32
+        }
+
+        private fun decryptPrivateZapMessage(msg: String, privkey: ByteArray, pubkey: ByteArray): String {
+            var sharedSecret = Utils.getSharedSecret(privkey, pubkey)
+            if (sharedSecret.size != 16 && sharedSecret.size != 32) {
+                throw IllegalArgumentException("Invalid shared secret size")
+            }
+            val parts = msg.split("_")
+            if (parts.size != 2) {
+                throw IllegalArgumentException("Invalid message format")
+            }
+            val iv = parts[1].run { Bech32.decode(this).second }
+            val encryptedMsg = parts.first().run { Bech32.decode(this).second }
+            val encryptedBytes = Bech32.five2eight(encryptedMsg, 0)
+            val cipher = Cipher.getInstance("AES/CBC/PKCS5Padding")
+            cipher.init(Cipher.DECRYPT_MODE, SecretKeySpec(sharedSecret, "AES"), IvParameterSpec(Bech32.five2eight(iv, 0)))
+
+            try {
+                val decryptedMsgBytes = cipher.doFinal(encryptedBytes)
+                return String(decryptedMsgBytes)
+            } catch (ex: BadPaddingException) {
+                throw IllegalArgumentException("Bad padding: ${ex.message}")
+            }
+        }
     }
 }
-
-/*
-{
-  "pubkey": "32e1827635450ebb3c5a7d12c1f8e7b2b514439ac10a67eef3d9fd9c5c68e245",
-  "content": "",
-  "id": "d9cc14d50fcb8c27539aacf776882942c1a11ea4472f8cdec1dea82fab66279d",
-  "created_at": 1674164539,
-  "sig": "77127f636577e9029276be060332ea565deaf89ff215a494ccff16ae3f757065e2bc59b2e8c113dd407917a010b3abd36c8d7ad84c0e3ab7dab3a0b0caa9835d",
-  "kind": 9734,
-  "tags": [
-  [
-    "e",
-    "3624762a1274dd9636e0c552b53086d70bc88c165bc4dc0f9e836a1eaf86c3b8"
-  ],
-  [
-    "p",
-    "32e1827635450ebb3c5a7d12c1f8e7b2b514439ac10a67eef3d9fd9c5c68e245"
-  ],
-  [
-    "relays",
-    "wss://relay.damus.io",
-    "wss://nostr-relay.wlvs.space",
-    "wss://nostr.fmt.wiz.biz",
-    "wss://relay.nostr.bg",
-    "wss://nostr.oxtr.dev",
-    "wss://nostr.v0l.io",
-    "wss://brb.io",
-    "wss://nostr.bitcoiner.social",
-    "ws://monad.jb55.com:8080",
-    "wss://relay.snort.social"
-  ],
-  [
-    "poll_option", "n"
-  ]
-  ],
-  "ots": <base64-encoded OTS file data> // TODO
-}
-*/

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

@@ -3,7 +3,7 @@ package com.vitorpamplona.amethyst.service.model
 import android.util.Log
 import com.google.gson.reflect.TypeToken
 import com.vitorpamplona.amethyst.model.HexKey
-import com.vitorpamplona.amethyst.model.toByteArray
+import com.vitorpamplona.amethyst.model.hexToByteArray
 import com.vitorpamplona.amethyst.model.toHexKey
 import nostr.postr.Utils
 import java.util.Date
@@ -21,7 +21,7 @@ class MuteListEvent(
 
     fun plainContent(privKey: ByteArray): String? {
         return try {
-            val sharedSecret = Utils.getSharedSecret(privKey, pubKey.toByteArray())
+            val sharedSecret = Utils.getSharedSecret(privKey, pubKey.hexToByteArray())
 
             return Utils.decrypt(content, sharedSecret)
         } catch (e: Exception) {

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

@@ -0,0 +1,54 @@
+package com.vitorpamplona.amethyst.service.model
+
+import com.vitorpamplona.amethyst.model.HexKey
+import com.vitorpamplona.amethyst.model.toHexKey
+import nostr.postr.Utils
+import java.util.Date
+
+class PeopleListEvent(
+    id: HexKey,
+    pubKey: HexKey,
+    createdAt: Long,
+    tags: List<List<String>>,
+    content: String,
+    sig: HexKey
+) : GeneralListEvent(id, pubKey, createdAt, kind, tags, content, sig) {
+    companion object {
+        const val kind = 30000
+
+        fun create(
+            name: String = "",
+
+            events: List<String>? = null,
+            users: List<String>? = null,
+            addresses: List<ATag>? = null,
+
+            privEvents: List<String>? = null,
+            privUsers: List<String>? = null,
+            privAddresses: List<ATag>? = null,
+
+            privateKey: ByteArray,
+            createdAt: Long = Date().time / 1000
+        ): PeopleListEvent {
+            val pubKey = Utils.pubkeyCreate(privateKey)
+            val content = createPrivateTags(privEvents, privUsers, privAddresses, privateKey, pubKey)
+
+            val tags = mutableListOf<List<String>>()
+            tags.add(listOf("d", name))
+
+            events?.forEach {
+                tags.add(listOf("e", it))
+            }
+            users?.forEach {
+                tags.add(listOf("p", it))
+            }
+            addresses?.forEach {
+                tags.add(listOf("a", it.toTag()))
+            }
+
+            val id = generateId(pubKey.toHexKey(), createdAt, kind, tags, content)
+            val sig = Utils.sign(id, privateKey)
+            return PeopleListEvent(id.toHexKey(), pubKey.toHexKey(), createdAt, tags, content, sig.toHexKey())
+        }
+    }
+}

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

@@ -48,7 +48,8 @@ class PollNoteEvent(
             valueMaximum: Int?,
             valueMinimum: Int?,
             consensusThreshold: Int?,
-            closedAt: Int?
+            closedAt: Int?,
+            zapReceiver: String?
         ): PollNoteEvent {
             val pubKey = Utils.pubkeyCreate(privateKey).toHexKey()
             val tags = mutableListOf<List<String>>()
@@ -68,6 +69,11 @@ class PollNoteEvent(
             tags.add(listOf(VALUE_MINIMUM, valueMinimum.toString()))
             tags.add(listOf(CONSENSUS_THRESHOLD, consensusThreshold.toString()))
             tags.add(listOf(CLOSED_AT, closedAt.toString()))
+
+            if (zapReceiver != null) {
+                tags.add(listOf("zap", zapReceiver))
+            }
+
             val id = generateId(pubKey, createdAt, kind, tags, msg)
             val sig = Utils.sign(id, privateKey)
             return PollNoteEvent(id.toHexKey(), pubKey, createdAt, tags, msg, sig.toHexKey())

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

@@ -21,7 +21,11 @@ class PrivateDmEvent(
      * nip-04 EncryptedDmEvent but may omit the recipient, too. This value can be queried and used
      * for initial messages.
      */
-    fun recipientPubKey() = tags.firstOrNull { it.size > 1 && it[0] == "p" }?.run { Hex.decode(this[1]).toHexKey() } // makes sure its a valid one
+    fun recipientPubKey() = tags.firstOrNull { it.size > 1 && it[0] == "p" }
+
+    fun recipientPubKeyBytes() = recipientPubKey()?.runCatching { Hex.decode(this[1]) }?.getOrNull()
+
+    fun verifiedRecipientPubKey() = recipientPubKey()?.runCatching { Hex.decode(this[1]).toHexKey() }?.getOrNull() // makes sure its a valid one
 
     /**
      * To be fully compatible with nip-04, we read e-tags that are in violation to nip-18.
@@ -31,6 +35,11 @@ class PrivateDmEvent(
      */
     fun replyTo() = tags.firstOrNull { it.size > 1 && it[0] == "e" }?.get(1)
 
+    fun with(pubkeyHex: String): Boolean {
+        return pubkeyHex == pubKey ||
+            tags.firstOrNull { it.size > 1 && it[0] == "p" }?.getOrNull(1) == pubkeyHex
+    }
+
     fun plainContent(privKey: ByteArray, pubKey: ByteArray): String? {
         return try {
             val sharedSecret = Utils.getSharedSecret(privKey, pubKey)
@@ -58,6 +67,7 @@ class PrivateDmEvent(
             msg: String,
             replyTos: List<String>? = null,
             mentions: List<String>? = null,
+            zapReceiver: String?,
             privateKey: ByteArray,
             createdAt: Long = Date().time / 1000,
             publishedRecipientPubKey: ByteArray? = null,
@@ -79,6 +89,9 @@ class PrivateDmEvent(
             mentions?.forEach {
                 tags.add(listOf("p", it))
             }
+            zapReceiver?.let {
+                tags.add(listOf("zap", it))
+            }
             val id = generateId(pubKey, createdAt, kind, tags, content)
             val sig = Utils.sign(id, privateKey)
             return PrivateDmEvent(id.toHexKey(), pubKey, createdAt, tags, content, sig.toHexKey())

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

@@ -0,0 +1,34 @@
+package com.vitorpamplona.amethyst.service.model
+
+import com.vitorpamplona.amethyst.model.HexKey
+import com.vitorpamplona.amethyst.model.toHexKey
+import nostr.postr.Utils
+import java.util.Date
+
+class RelayAuthEvent(
+    id: HexKey,
+    pubKey: HexKey,
+    createdAt: Long,
+    tags: List<List<String>>,
+    content: String,
+    sig: HexKey
+) : Event(id, pubKey, createdAt, kind, tags, content, sig) {
+    fun relay() = tags.firstOrNull() { it.size > 1 && it[0] == "relay" }?.get(1)
+    fun challenge() = tags.firstOrNull() { it.size > 1 && it[0] == "challenge" }?.get(1)
+
+    companion object {
+        const val kind = 22242
+
+        fun create(relay: String, challenge: String, privateKey: ByteArray, createdAt: Long = Date().time / 1000): RelayAuthEvent {
+            val content = ""
+            val pubKey = Utils.pubkeyCreate(privateKey).toHexKey()
+            val tags = listOf(
+                listOf("relay", relay),
+                listOf("challenge", challenge)
+            )
+            val id = generateId(pubKey, createdAt, kind, tags, content)
+            val sig = Utils.sign(id, privateKey)
+            return RelayAuthEvent(id.toHexKey(), pubKey, createdAt, tags, content, sig.toHexKey())
+        }
+    }
+}

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

@@ -26,6 +26,7 @@ class TextNoteEvent(
             mentions: List<String>?,
             addresses: List<ATag>?,
             extraTags: List<String>?,
+            zapReceiver: String?,
             privateKey: ByteArray,
             createdAt: Long = Date().time / 1000
         ): TextNoteEvent {
@@ -46,9 +47,13 @@ class TextNoteEvent(
             extraTags?.forEach {
                 tags.add(listOf("t", it))
             }
+            zapReceiver?.let {
+                tags.add(listOf("zap", it))
+            }
             findURLs(msg).forEach {
                 tags.add(listOf("r", it))
             }
+
             val id = generateId(pubKey, createdAt, kind, tags, msg)
             val sig = Utils.sign(id, privateKey)
             return TextNoteEvent(id.toHexKey(), pubKey, createdAt, tags, msg, sig.toHexKey())

app/src/main/java/com/vitorpamplona/amethyst/service/nip19/Nip19.kt

@@ -1,8 +1,11 @@
 package com.vitorpamplona.amethyst.service.nip19
 
 import android.util.Log
+import com.vitorpamplona.amethyst.model.hexToByteArray
 import com.vitorpamplona.amethyst.model.toHexKey
+import nostr.postr.Bech32
 import nostr.postr.bechToBytes
+import nostr.postr.toByteArray
 import java.util.regex.Pattern
 
 object Nip19 {
@@ -12,7 +15,14 @@ object Nip19 {
 
     val nip19regex = Pattern.compile("(nostr:)?@?(nsec1|npub1|nevent1|naddr1|note1|nprofile1|nrelay1)([qpzry9x8gf2tvdw0s3jn54khce6mua7l]+)(.*)", Pattern.CASE_INSENSITIVE)
 
-    data class Return(val type: Type, val hex: String, val relay: String? = null, val additionalChars: String = "")
+    data class Return(
+        val type: Type,
+        val hex: String,
+        val relay: String? = null,
+        val author: String? = null,
+        val kind: Long? = null,
+        val additionalChars: String = ""
+    )
 
     fun uriToRoute(uri: String?): Return? {
         if (uri == null) return null
@@ -26,8 +36,23 @@ object Nip19 {
             val uriScheme = matcher.group(1) // nostr:
             val type = matcher.group(2) // npub1
             val key = matcher.group(3) // bech32
-            val additionalChars = matcher.group(4) ?: "" // additional chars
+            val additionalChars = matcher.group(4) // additional chars
 
+            return parseComponents(uriScheme, type, key, additionalChars)
+        } catch (e: Throwable) {
+            Log.e("NIP19 Parser", "Issue trying to Decode NIP19 $uri: ${e.message}", e)
+        }
+
+        return null
+    }
+
+    fun parseComponents(
+        uriScheme: String?,
+        type: String,
+        key: String?,
+        additionalChars: String?
+    ): Return? {
+        return try {
             val bytes = (type + key).bechToBytes()
             val parsed = when (type.lowercase()) {
                 "npub1" -> npub(bytes)
@@ -38,12 +63,11 @@ object Nip19 {
                 "naddr1" -> naddr(bytes)
                 else -> null
             }
-            return parsed?.copy(additionalChars = additionalChars)
+            parsed?.copy(additionalChars = additionalChars ?: "")
         } catch (e: Throwable) {
-            Log.e("NIP19 Parser", "Issue trying to Decode NIP19 $uri: ${e.message}", e)
+            Log.e("NIP19 Parser", "Issue trying to Decode NIP19 $key: ${e.message}", e)
+            null
         }
-
-        return null
     }
 
     private fun npub(bytes: ByteArray): Return {
@@ -79,7 +103,15 @@ object Nip19 {
             ?.get(0)
             ?.toString(Charsets.UTF_8)
 
-        return Return(Type.EVENT, hex, relay)
+        val author = tlv.get(Tlv.Type.AUTHOR.id)
+            ?.get(0)
+            ?.toHexKey()
+
+        val kind = tlv.get(Tlv.Type.KIND.id)
+            ?.get(0)
+            ?.let { Tlv.toInt32(it) }?.toLong()
+
+        return Return(Type.EVENT, hex, relay, author, kind)
     }
 
     private fun nrelay(bytes: ByteArray): Return? {
@@ -108,8 +140,31 @@ object Nip19 {
 
         val kind = tlv.get(Tlv.Type.KIND.id)
             ?.get(0)
-            ?.let { Tlv.toInt32(it) }
+            ?.let { Tlv.toInt32(it) }?.toLong()
 
-        return Return(Type.ADDRESS, "$kind:$author:$d", relay)
+        return Return(Type.ADDRESS, "$kind:$author:$d", relay, author, kind)
+    }
+
+    public fun createNEvent(idHex: String, author: String?, kind: Int?, relay: String?): String {
+        val kind = kind?.toByteArray()
+        val author = author?.hexToByteArray()
+        val idHex = idHex.hexToByteArray()
+        val relay = relay?.toByteArray(Charsets.UTF_8)
+
+        var fullArray = byteArrayOf(Tlv.Type.SPECIAL.id, idHex.size.toByte()) + idHex
+
+        if (relay != null) {
+            fullArray = fullArray + byteArrayOf(Tlv.Type.RELAY.id, relay.size.toByte()) + relay
+        }
+
+        if (author != null) {
+            fullArray = fullArray + byteArrayOf(Tlv.Type.AUTHOR.id, author.size.toByte()) + author
+        }
+
+        if (kind != null) {
+            fullArray = fullArray + byteArrayOf(Tlv.Type.KIND.id, kind.size.toByte()) + kind
+        }
+
+        return Bech32.encodeBytes(hrp = "nevent", fullArray, Bech32.Encoding.Bech32)
     }
 }

app/src/main/java/com/vitorpamplona/amethyst/service/relays/Client.kt

@@ -5,6 +5,7 @@ import com.vitorpamplona.amethyst.service.model.EventInterface
 import kotlinx.coroutines.DelicateCoroutinesApi
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.GlobalScope
+import kotlinx.coroutines.delay
 import kotlinx.coroutines.launch
 import java.util.UUID
 
@@ -64,21 +65,49 @@ object Client : RelayPool.Listener {
         RelayPool.sendFilterOnlyIfDisconnected()
     }
 
-    fun send(signedEvent: EventInterface, relay: String? = null) {
+    fun send(signedEvent: EventInterface, relay: String? = null, feedTypes: Set<FeedType>? = null, onDone: (() -> Unit)? = null) {
         if (relay == null) {
             RelayPool.send(signedEvent)
         } else {
-            val useConnectedRelay = relays.filter { it.url == relay }
+            val useConnectedRelayIfPresent = relays.filter { it.url == relay }
 
-            if (useConnectedRelay.isNotEmpty()) {
-                useConnectedRelay.forEach {
+            if (useConnectedRelayIfPresent.isNotEmpty()) {
+                useConnectedRelayIfPresent.forEach {
                     it.send(signedEvent)
                 }
             } else {
                 /** temporary connection */
-                Relay(relay, false, true, emptySet()).requestAndWatch() {
-                    it.send(signedEvent)
-                    it.disconnect()
+                newSporadicRelay(
+                    relay,
+                    feedTypes,
+                    onConnected = { relay ->
+                        relay.send(signedEvent)
+                    },
+                    onDone = onDone
+                )
+            }
+        }
+    }
+
+    @OptIn(DelicateCoroutinesApi::class)
+    fun newSporadicRelay(url: String, feedTypes: Set<FeedType>?, onConnected: (Relay) -> Unit, onDone: (() -> Unit)?) {
+        val relay = Relay(url, true, true, feedTypes ?: emptySet())
+        RelayPool.addRelay(relay)
+
+        relay.requestAndWatch {
+            allSubscriptions().forEach {
+                relay.sendFilter(requestId = it)
+            }
+
+            onConnected(relay)
+
+            GlobalScope.launch(Dispatchers.IO) {
+                delay(10000) // waits for a reply
+                relay.disconnect()
+                RelayPool.removeRelay(relay)
+
+                if (onDone != null) {
+                    onDone()
                 }
             }
         }
@@ -131,6 +160,14 @@ object Client : RelayPool.Listener {
         }
     }
 
+    override fun onAuth(relay: Relay, challenge: String) {
+        // Releases the Web thread for the new payload.
+        // May need to add a processing queue if processing new events become too costly.
+        GlobalScope.launch(Dispatchers.Default) {
+            listeners.forEach { it.onAuth(relay, challenge) }
+        }
+    }
+
     fun subscribe(listener: Listener) {
         listeners = listeners.plus(listener)
     }
@@ -167,5 +204,7 @@ object Client : RelayPool.Listener {
          * When an relay saves or rejects a new event.
          */
         open fun onSendResponse(eventId: String, success: Boolean, message: String, relay: Relay) = Unit
+
+        open fun onAuth(relay: Relay, challenge: String) = Unit
     }
 }

app/src/main/java/com/vitorpamplona/amethyst/service/relays/EOSE.kt

@@ -19,13 +19,28 @@ class EOSERelayList(var relayList: Map<String, EOSETime> = emptyMap()) {
     }
 }
 
-class EOSEAccount(var users: Map<User, EOSERelayList> = emptyMap()) {
-    fun addOrUpdate(user: User, relayUrl: String, time: Long) {
-        val relayList = users[user]
+class EOSEFollowList(var followList: Map<String, EOSERelayList> = emptyMap()) {
+    fun addOrUpdate(listCode: String, relayUrl: String, time: Long) {
+        val relayList = followList[listCode]
         if (relayList == null) {
-            users = users + mapOf(user to EOSERelayList(mapOf(relayUrl to EOSETime(time))))
+            val newList = EOSERelayList()
+            newList.addOrUpdate(relayUrl, time)
+            followList = followList + mapOf(listCode to newList)
         } else {
             relayList.addOrUpdate(relayUrl, time)
         }
     }
 }
+
+class EOSEAccount(var users: Map<User, EOSEFollowList> = emptyMap()) {
+    fun addOrUpdate(user: User, listCode: String, relayUrl: String, time: Long) {
+        val followList = users[user]
+        if (followList == null) {
+            val newList = EOSEFollowList()
+            newList.addOrUpdate(listCode, relayUrl, time)
+            users = users + mapOf(user to newList)
+        } else {
+            followList.addOrUpdate(listCode, relayUrl, time)
+        }
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/service/relays/Relay.kt

@@ -5,6 +5,7 @@ import com.google.gson.JsonElement
 import com.vitorpamplona.amethyst.BuildConfig
 import com.vitorpamplona.amethyst.service.model.Event
 import com.vitorpamplona.amethyst.service.model.EventInterface
+import com.vitorpamplona.amethyst.service.model.RelayAuthEvent
 import okhttp3.OkHttpClient
 import okhttp3.Request
 import okhttp3.Response
@@ -13,9 +14,11 @@ import okhttp3.WebSocketListener
 import java.util.Date
 
 enum class FeedType {
-    FOLLOWS, PUBLIC_CHATS, PRIVATE_DMS, GLOBAL, SEARCH
+    FOLLOWS, PUBLIC_CHATS, PRIVATE_DMS, GLOBAL, SEARCH, WALLET_CONNECT
 }
 
+val COMMON_FEED_TYPES = setOf(FeedType.FOLLOWS, FeedType.PUBLIC_CHATS, FeedType.PRIVATE_DMS, FeedType.GLOBAL)
+
 class Relay(
     var url: String,
     var read: Boolean = true,
@@ -95,9 +98,11 @@ class Relay(
 
                         when (type) {
                             "EVENT" -> {
+                                val event = Event.fromJson(msg[2], Client.lenient)
+
                                 // Log.w("Relay", "Relay onEVENT $url, $channel")
                                 listeners.forEach {
-                                    it.onEvent(this@Relay, channel, Event.fromJson(msg[2], Client.lenient))
+                                    it.onEvent(this@Relay, channel, event)
                                     if (afterEOSE) {
                                         it.onRelayStateChange(this@Relay, Type.EOSE, channel)
                                     }
@@ -109,13 +114,17 @@ class Relay(
                                 it.onRelayStateChange(this@Relay, Type.EOSE, channel)
                             }
                             "NOTICE" -> listeners.forEach {
-                                // Log.w("Relay", "Relay onNotice $url, $channel")
+                                Log.w("Relay", "Relay onNotice $url, $channel")
                                 it.onError(this@Relay, channel, Error("Relay sent notice: " + channel))
                             }
                             "OK" -> listeners.forEach {
-                                // Log.w("Relay", "Relay onOK $url, $channel")
+                                Log.w("Relay", "Relay on OK $url, ${msg[1].asString}, ${msg[2].asBoolean}, ${msg[3].asString}")
                                 it.onSendResponse(this@Relay, msg[1].asString, msg[2].asBoolean, msg[3].asString)
                             }
+                            "AUTH" -> listeners.forEach {
+                                // Log.w("Relay", "Relay$url, ${msg[1].asString}")
+                                it.onAuth(this@Relay, msg[1].asString)
+                            }
                             else -> listeners.forEach {
                                 // Log.w("Relay", "Relay something else $url, $channel")
                                 it.onError(
@@ -196,7 +205,7 @@ class Relay(
                     val filters = Client.getSubscriptionFilters(requestId).filter { activeTypes.intersect(it.types).isNotEmpty() }
                     if (filters.isNotEmpty()) {
                         val request =
-                            """["REQ","$requestId",${filters.take(40).joinToString(",") { it.filter.toJson(url) }}]"""
+                            """["REQ","$requestId",${filters.take(10).joinToString(",") { it.filter.toJson(url) }}]"""
                         // println("FILTERSSENT $url $request")
                         socket?.send(request)
                         eventUploadCounterInBytes += request.bytesUsedInMemory()
@@ -224,11 +233,19 @@ class Relay(
     }
 
     fun send(signedEvent: EventInterface) {
-        if (write) {
-            val event = """["EVENT",${signedEvent.toJson()}]"""
+        if (signedEvent is RelayAuthEvent) {
+            val event = """["AUTH",${signedEvent.toJson()}]"""
             socket?.send(event)
             eventUploadCounterInBytes += event.bytesUsedInMemory()
         }
+
+        if (write) {
+            if (signedEvent !is RelayAuthEvent) {
+                val event = """["EVENT",${signedEvent.toJson()}]"""
+                socket?.send(event)
+                eventUploadCounterInBytes += event.bytesUsedInMemory()
+            }
+        }
     }
 
     fun close(subscriptionId: String) {
@@ -266,6 +283,8 @@ class Relay(
 
         fun onSendResponse(relay: Relay, eventId: String, success: Boolean, message: String)
 
+        fun onAuth(relay: Relay, challenge: String)
+
         /**
          * Connected to or disconnected from a relay
          *

app/src/main/java/com/vitorpamplona/amethyst/service/relays/RelayPool.kt

@@ -93,6 +93,8 @@ object RelayPool : Relay.Listener {
         fun onRelayStateChange(type: Relay.Type, relay: Relay, channel: String?)
 
         fun onSendResponse(eventId: String, success: Boolean, message: String, relay: Relay)
+
+        fun onAuth(relay: Relay, challenge: String)
     }
 
     override fun onEvent(relay: Relay, subscriptionId: String, event: Event) {
@@ -113,6 +115,10 @@ object RelayPool : Relay.Listener {
         listeners.forEach { it.onSendResponse(eventId, success, message, relay) }
     }
 
+    override fun onAuth(relay: Relay, challenge: String) {
+        listeners.forEach { it.onAuth(relay, challenge) }
+    }
+
     // Observers line up here.
     val live: RelayPoolLiveData = RelayPoolLiveData(this)
 

app/src/main/java/com/vitorpamplona/amethyst/ui/MainActivity.kt

@@ -22,6 +22,7 @@ import com.vitorpamplona.amethyst.ServiceManager
 import com.vitorpamplona.amethyst.VideoCache
 import com.vitorpamplona.amethyst.service.nip19.Nip19
 import com.vitorpamplona.amethyst.service.relays.Client
+import com.vitorpamplona.amethyst.ui.components.muted
 import com.vitorpamplona.amethyst.ui.navigation.Route
 import com.vitorpamplona.amethyst.ui.note.Nip47
 import com.vitorpamplona.amethyst.ui.screen.AccountScreen
@@ -92,6 +93,8 @@ class MainActivity : FragmentActivity() {
     @OptIn(DelicateCoroutinesApi::class)
     override fun onResume() {
         super.onResume()
+        // starts muted every time
+        muted.value = true
 
         // Only starts after login
         GlobalScope.launch(Dispatchers.IO) {

app/src/main/java/com/vitorpamplona/amethyst/ui/actions/ImageDownloader.kt

@@ -0,0 +1,47 @@
+package com.vitorpamplona.amethyst.ui.actions
+
+import kotlinx.coroutines.delay
+import java.net.HttpURLConnection
+import java.net.URL
+
+class ImageDownloader {
+    suspend fun waitAndGetImage(imageUrl: String): ByteArray? {
+        var imageData: ByteArray? = null
+        var tentatives = 0
+
+        // Servers are usually not ready.. so tries to download it for 15 times/seconds.
+        while (imageData == null && tentatives < 15) {
+            imageData = try {
+                HttpURLConnection.setFollowRedirects(true)
+                var url = URL(imageUrl)
+                var huc = url.openConnection() as HttpURLConnection
+                huc.instanceFollowRedirects = true
+                var responseCode = huc.responseCode
+
+                if (responseCode in 300..400) {
+                    val newUrl: String = huc.getHeaderField("Location")
+
+                    // open the new connnection again
+                    url = URL(newUrl)
+                    huc = url.openConnection() as HttpURLConnection
+                    responseCode = huc.responseCode
+                }
+
+                if (responseCode in 200..300) {
+                    huc.inputStream.use { it.readBytes() }
+                } else {
+                    tentatives++
+                    delay(1000)
+
+                    null
+                }
+            } catch (e: Exception) {
+                tentatives++
+                delay(1000)
+                null
+            }
+        }
+
+        return imageData
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/ui/actions/ImageSaver.kt

@@ -7,13 +7,17 @@ import android.media.MediaScannerConnection
 import android.os.Build
 import android.os.Environment
 import android.provider.MediaStore
+import android.webkit.MimeTypeMap
 import androidx.annotation.RequiresApi
 import com.vitorpamplona.amethyst.BuildConfig
 import okhttp3.*
 import okio.BufferedSource
 import okio.IOException
+import okio.buffer
 import okio.sink
+import okio.source
 import java.io.File
+import java.util.UUID
 
 object ImageSaver {
     /**
@@ -74,6 +78,38 @@ object ImageSaver {
         })
     }
 
+    fun saveImage(
+        localFile: File,
+        mimeType: String?,
+        context: Context,
+        onSuccess: () -> Any?,
+        onError: (Throwable) -> Any?
+    ) {
+        try {
+            val extension = mimeType?.let { MimeTypeMap.getSingleton().getExtensionFromMimeType(it) } ?: ""
+            val buffer = localFile.inputStream().source().buffer()
+
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
+                saveContentQ(
+                    displayName = UUID.randomUUID().toString(),
+                    contentType = mimeType ?: "",
+                    contentSource = buffer,
+                    contentResolver = context.contentResolver
+                )
+            } else {
+                saveContentDefault(
+                    fileName = UUID.randomUUID().toString() + ".$extension",
+                    contentSource = buffer,
+                    context = context
+                )
+            }
+            onSuccess()
+        } catch (e: Exception) {
+            e.printStackTrace()
+            onError(e)
+        }
+    }
+
     @RequiresApi(Build.VERSION_CODES.Q)
     private fun saveContentQ(
         displayName: String,
@@ -90,8 +126,14 @@ object ImageSaver {
             )
         }
 
+        val masterUri = if (contentType.startsWith("image")) {
+            MediaStore.Images.Media.EXTERNAL_CONTENT_URI
+        } else {
+            MediaStore.Video.Media.EXTERNAL_CONTENT_URI
+        }
+
         val uri =
-            contentResolver.insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, contentValues)
+            contentResolver.insert(masterUri, contentValues)
         checkNotNull(uri) {
             "Can't insert the new content"
         }

app/src/main/java/com/vitorpamplona/amethyst/ui/actions/ImageUploader.kt

@@ -2,6 +2,8 @@ package com.vitorpamplona.amethyst.ui.actions
 
 import android.content.ContentResolver
 import android.net.Uri
+import android.provider.OpenableColumns
+import android.webkit.MimeTypeMap
 import com.fasterxml.jackson.module.kotlin.jacksonObjectMapper
 import com.vitorpamplona.amethyst.BuildConfig
 import okhttp3.*
@@ -9,62 +11,108 @@ import okhttp3.MediaType.Companion.toMediaType
 import okio.BufferedSink
 import okio.source
 import java.io.IOException
-import java.util.*
+import java.io.InputStream
+
+val charPool: List<Char> = ('a'..'z') + ('A'..'Z') + ('0'..'9')
+
+fun randomChars() = List(16) { charPool.random() }.joinToString("")
 
 object ImageUploader {
+
     fun uploadImage(
         uri: Uri,
+        server: ServersAvailable,
         contentResolver: ContentResolver,
-        onSuccess: (String) -> Unit,
+        onSuccess: (String, String?) -> Unit,
         onError: (Throwable) -> Unit
     ) {
         val contentType = contentResolver.getType(uri)
-        val category = contentType?.toMediaType()?.toString()?.split("/")?.get(0) ?: "image"
+        val imageInputStream = contentResolver.openInputStream(uri)
 
-        val url = if (category == "image") "https://api.imgur.com/3/image" else "https://api.imgur.com/3/upload"
+        val length = contentResolver.query(uri, null, null, null, null)?.use {
+            it.moveToFirst()
+            val sizeIndex = it.getColumnIndex(OpenableColumns.SIZE)
+            it.getLong(sizeIndex)
+        } ?: 0
+
+        checkNotNull(imageInputStream) {
+            "Can't open the image input stream"
+        }
+        val myServer = when (server) {
+            ServersAvailable.IMGUR, ServersAvailable.IMGUR_NIP_94 -> {
+                ImgurServer()
+            }
+            ServersAvailable.NOSTRIMG, ServersAvailable.NOSTRIMG_NIP_94 -> {
+                NostrImgServer()
+            }
+            ServersAvailable.NOSTR_BUILD, ServersAvailable.NOSTR_BUILD_NIP_94 -> {
+                NostrBuildServer()
+            }
+            ServersAvailable.NOSTRFILES_DEV, ServersAvailable.NOSTRFILES_DEV_NIP_94 -> {
+                NostrFilesDevServer()
+            }
+            else -> {
+                ImgurServer()
+            }
+        }
+
+        uploadImage(imageInputStream, length, contentType, myServer, onSuccess, onError)
+    }
+
+    fun uploadImage(
+        inputStream: InputStream,
+        length: Long,
+        contentType: String?,
+        server: FileServer,
+        onSuccess: (String, String?) -> Unit,
+        onError: (Throwable) -> Unit
+    ) {
+        val fileName = randomChars()
+        val extension = contentType?.let { MimeTypeMap.getSingleton().getExtensionFromMimeType(it) } ?: ""
 
         val client = OkHttpClient.Builder().build()
+        val requestBody: RequestBody
+        val requestBuilder = Request.Builder()
 
-        val requestBody: RequestBody = MultipartBody.Builder()
+        requestBody = MultipartBody.Builder()
             .setType(MultipartBody.FORM)
             .addFormDataPart(
-                category,
-                "${UUID.randomUUID()}",
+                server.inputParameterName(contentType),
+                "$fileName.$extension",
+
                 object : RequestBody() {
-                    override fun contentType(): MediaType? =
-                        contentType?.toMediaType()
+                    override fun contentType() = contentType?.toMediaType()
+
+                    override fun contentLength() = length
 
                     override fun writeTo(sink: BufferedSink) {
-                        val imageInputStream = contentResolver.openInputStream(uri)
-                        checkNotNull(imageInputStream) {
-                            "Can't open the image input stream"
-                        }
-
-                        imageInputStream.source().use(sink::writeAll)
+                        inputStream.source().use(sink::writeAll)
                     }
                 }
             )
             .build()
 
-        val request: Request = Request.Builder()
-            .header("Authorization", "Client-ID e6aea87296f3f96")
-            .header("User-Agent", "Amethyst/${BuildConfig.VERSION_NAME}")
-            .url(url)
+        server.clientID()?.let {
+            requestBuilder.addHeader("Authorization", it)
+        }
+
+        requestBuilder
+            .addHeader("User-Agent", "Amethyst/${BuildConfig.VERSION_NAME}")
+            .url(server.postUrl(contentType))
             .post(requestBody)
-            .build()
+        val request = requestBuilder.build()
 
         client.newCall(request).enqueue(object : Callback {
             override fun onResponse(call: Call, response: Response) {
                 try {
                     check(response.isSuccessful)
                     response.body.use { body ->
-                        val tree = jacksonObjectMapper().readTree(body.string())
-                        val url = tree?.get("data")?.get("link")?.asText()
+                        val url = server.parseUrlFromSuccess(body.string())
                         checkNotNull(url) {
                             "There must be an uploaded image URL in the response"
                         }
 
-                        onSuccess(url)
+                        onSuccess(url, contentType)
                     }
                 } catch (e: Exception) {
                     e.printStackTrace()
@@ -79,3 +127,74 @@ object ImageUploader {
         })
     }
 }
+
+abstract class FileServer {
+    abstract fun postUrl(contentType: String?): String
+    abstract fun parseUrlFromSuccess(body: String): String?
+    abstract fun inputParameterName(contentType: String?): String
+
+    open fun clientID(): String? = null
+}
+
+class NostrImgServer : FileServer() {
+    override fun postUrl(contentType: String?) = "https://nostrimg.com/api/upload"
+
+    override fun parseUrlFromSuccess(body: String): String? {
+        val tree = jacksonObjectMapper().readTree(body)
+        val url = tree?.get("data")?.get("link")?.asText()
+        return url
+    }
+
+    override fun inputParameterName(contentType: String?): String {
+        return contentType?.toMediaType()?.toString()?.split("/")?.get(0) ?: "image"
+    }
+
+    override fun clientID() = null
+}
+
+class ImgurServer : FileServer() {
+    override fun postUrl(contentType: String?): String {
+        val category = contentType?.toMediaType()?.toString()?.split("/")?.get(0) ?: "image"
+        return if (category == "image") "https://api.imgur.com/3/image" else "https://api.imgur.com/3/upload"
+    }
+
+    override fun parseUrlFromSuccess(body: String): String? {
+        val tree = jacksonObjectMapper().readTree(body)
+        val url = tree?.get("data")?.get("link")?.asText()
+        return url
+    }
+
+    override fun inputParameterName(contentType: String?): String {
+        return contentType?.toMediaType()?.toString()?.split("/")?.get(0) ?: "image"
+    }
+
+    override fun clientID() = "Client-ID e6aea87296f3f96"
+}
+
+class NostrBuildServer : FileServer() {
+    override fun postUrl(contentType: String?) = "https://nostr.build/api/upload/android.php"
+    override fun parseUrlFromSuccess(body: String): String? {
+        val url = jacksonObjectMapper().readTree(body) // return url.toString()
+        return url.toString().replace("\"", "")
+    }
+
+    override fun inputParameterName(contentType: String?): String {
+        return "fileToUpload"
+    }
+
+    override fun clientID() = null
+}
+
+class NostrFilesDevServer : FileServer() {
+    override fun postUrl(contentType: String?) = "https://nostrfiles.dev/upload_image"
+    override fun parseUrlFromSuccess(body: String): String? {
+        val tree = jacksonObjectMapper().readTree(body)
+        return tree?.get("url")?.asText()
+    }
+
+    override fun inputParameterName(contentType: String?): String {
+        return "file"
+    }
+
+    override fun clientID() = null
+}

app/src/main/java/com/vitorpamplona/amethyst/ui/actions/NewMediaModel.kt

@@ -0,0 +1,208 @@
+package com.vitorpamplona.amethyst.ui.actions
+
+import android.content.Context
+import android.net.Uri
+import android.util.Log
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.setValue
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import com.vitorpamplona.amethyst.model.*
+import com.vitorpamplona.amethyst.service.FileHeader
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.flow.MutableSharedFlow
+import kotlinx.coroutines.launch
+
+open class NewMediaModel : ViewModel() {
+    var account: Account? = null
+
+    var isUploadingImage by mutableStateOf(false)
+    val imageUploadingError = MutableSharedFlow<String?>()
+    var mediaType by mutableStateOf<String?>(null)
+
+    var selectedServer by mutableStateOf<ServersAvailable?>(null)
+    var description by mutableStateOf("")
+
+    // Images and Videos
+    var galleryUri by mutableStateOf<Uri?>(null)
+
+    var uploadingPercentage = mutableStateOf(0.0f)
+    var uploadingDescription = mutableStateOf<String?>(null)
+
+    var onceUploaded: () -> Unit = {}
+
+    open fun load(account: Account, uri: Uri, contentType: String?) {
+        this.account = account
+        this.galleryUri = uri
+        this.mediaType = contentType
+        this.selectedServer = defaultServer()
+
+        if (selectedServer == ServersAvailable.IMGUR) {
+            selectedServer = ServersAvailable.IMGUR_NIP_94
+        } else if (selectedServer == ServersAvailable.NOSTRIMG) {
+            selectedServer = ServersAvailable.NOSTRIMG_NIP_94
+        } else if (selectedServer == ServersAvailable.NOSTR_BUILD) {
+            selectedServer = ServersAvailable.NOSTR_BUILD_NIP_94
+        } else if (selectedServer == ServersAvailable.NOSTRFILES_DEV) {
+            selectedServer = ServersAvailable.NOSTRFILES_DEV_NIP_94
+        }
+    }
+
+    fun upload(context: Context) {
+        isUploadingImage = true
+
+        val contentResolver = context.contentResolver
+        val uri = galleryUri ?: return
+        val serverToUse = selectedServer ?: return
+
+        if (selectedServer == ServersAvailable.NIP95) {
+            uploadingPercentage.value = 0.1f
+            uploadingDescription.value = "Loading"
+            val contentType = contentResolver.getType(uri)
+            contentResolver.openInputStream(uri)?.use {
+                createNIP95Record(it.readBytes(), contentType, description)
+            }
+                ?: run {
+                    viewModelScope.launch {
+                        imageUploadingError.emit("Failed to upload the image / video")
+                        isUploadingImage = false
+                        uploadingPercentage.value = 0.00f
+                        uploadingDescription.value = null
+                    }
+                }
+        } else {
+            uploadingPercentage.value = 0.1f
+            uploadingDescription.value = "Uploading"
+            ImageUploader.uploadImage(
+                uri = uri,
+                server = serverToUse,
+                contentResolver = contentResolver,
+                onSuccess = { imageUrl, mimeType ->
+                    createNIP94Record(imageUrl, mimeType, description)
+                },
+                onError = {
+                    isUploadingImage = false
+                    uploadingPercentage.value = 0.00f
+                    uploadingDescription.value = null
+                    viewModelScope.launch {
+                        imageUploadingError.emit("Failed to upload the image / video")
+                    }
+                }
+            )
+        }
+    }
+
+    open fun cancel() {
+        galleryUri = null
+        isUploadingImage = false
+        mediaType = null
+        uploadingDescription.value = null
+        uploadingPercentage.value = 0.0f
+
+        description = ""
+        selectedServer = account?.defaultFileServer
+    }
+
+    fun canPost(): Boolean {
+        return !isUploadingImage && galleryUri != null && selectedServer != null
+    }
+
+    fun createNIP94Record(imageUrl: String, mimeType: String?, description: String) {
+        uploadingPercentage.value = 0.40f
+        viewModelScope.launch(Dispatchers.IO) {
+            uploadingDescription.value = "Server Processing"
+            // Images don't seem to be ready immediately after upload
+
+            val imageData: ByteArray? = ImageDownloader().waitAndGetImage(imageUrl)
+
+            uploadingDescription.value = "Downloading"
+            uploadingPercentage.value = 0.60f
+
+            if (imageData != null) {
+                uploadingPercentage.value = 0.80f
+                uploadingDescription.value = "Hashing"
+
+                FileHeader.prepare(
+                    imageData,
+                    imageUrl,
+                    mimeType,
+                    description,
+                    onReady = {
+                        uploadingPercentage.value = 0.90f
+                        uploadingDescription.value = "Sending"
+                        account?.sendHeader(it)
+                        uploadingPercentage.value = 1.00f
+                        isUploadingImage = false
+                        onceUploaded()
+                        cancel()
+                    },
+                    onError = {
+                        cancel()
+                        uploadingPercentage.value = 0.00f
+                        uploadingDescription.value = null
+                        isUploadingImage = false
+                        viewModelScope.launch {
+                            imageUploadingError.emit("Failed to upload the image / video")
+                        }
+                    }
+                )
+            } else {
+                Log.e("ImageDownload", "Couldn't download image from server")
+                cancel()
+                uploadingPercentage.value = 0.00f
+                uploadingDescription.value = null
+                isUploadingImage = false
+                viewModelScope.launch {
+                    imageUploadingError.emit("Failed to upload the image / video")
+                }
+            }
+        }
+    }
+
+    fun createNIP95Record(bytes: ByteArray, mimeType: String?, description: String) {
+        uploadingPercentage.value = 0.20f
+        uploadingDescription.value = "Hashing"
+
+        viewModelScope.launch(Dispatchers.IO) {
+            FileHeader.prepare(
+                bytes,
+                "",
+                mimeType,
+                description,
+                onReady = {
+                    uploadingDescription.value = "Signing"
+                    uploadingPercentage.value = 0.30f
+                    val nip95 = account?.createNip95(bytes, headerInfo = it)
+
+                    if (nip95 != null) {
+                        uploadingDescription.value = "Sending"
+                        uploadingPercentage.value = 0.60f
+                        account?.sendNip95(nip95.first, nip95.second)
+                    }
+
+                    uploadingPercentage.value = 1.00f
+                    isUploadingImage = false
+                    onceUploaded()
+                    cancel()
+                },
+                onError = {
+                    uploadingDescription.value = null
+                    uploadingPercentage.value = 0.00f
+                    isUploadingImage = false
+                    cancel()
+                    viewModelScope.launch {
+                        imageUploadingError.emit("Failed to upload the image / video")
+                    }
+                }
+            )
+        }
+    }
+
+    fun isImage() = mediaType?.startsWith("image")
+    fun isVideo() = mediaType?.startsWith("video")
+    fun defaultServer() = account?.defaultFileServer
+    fun onceUploaded(onceUploaded: () -> Unit) {
+        this.onceUploaded = onceUploaded
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/ui/actions/NewMediaView.kt

@@ -0,0 +1,230 @@
+package com.vitorpamplona.amethyst.ui.actions
+
+import android.graphics.Bitmap
+import android.net.Uri
+import android.os.Build
+import android.util.Size
+import android.widget.Toast
+import androidx.compose.foundation.Image
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.text.KeyboardOptions
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material.*
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.asImageBitmap
+import androidx.compose.ui.layout.ContentScale
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.input.KeyboardCapitalization
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.window.Dialog
+import androidx.compose.ui.window.DialogProperties
+import androidx.navigation.NavController
+import coil.compose.AsyncImage
+import com.vitorpamplona.amethyst.R
+import com.vitorpamplona.amethyst.model.Account
+import com.vitorpamplona.amethyst.ui.components.*
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.TextSpinner
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+
+@Composable
+fun NewMediaView(uri: Uri, onClose: () -> Unit, postViewModel: NewMediaModel, accountViewModel: AccountViewModel, navController: NavController) {
+    val account = accountViewModel.accountLiveData.value?.account ?: return
+    val resolver = LocalContext.current.contentResolver
+    val context = LocalContext.current
+
+    val scroolState = rememberScrollState()
+
+    LaunchedEffect(uri) {
+        val mediaType = resolver.getType(uri) ?: ""
+        postViewModel.load(account, uri, mediaType)
+        postViewModel.imageUploadingError.collect { error ->
+            Toast.makeText(context, error, Toast.LENGTH_SHORT).show()
+        }
+    }
+
+    Dialog(
+        onDismissRequest = { onClose() },
+        properties = DialogProperties(
+            usePlatformDefaultWidth = false,
+            dismissOnClickOutside = false,
+            decorFitsSystemWindows = false
+        )
+    ) {
+        Surface(
+            modifier = Modifier
+                .fillMaxWidth()
+        ) {
+            Column(
+                modifier = Modifier.padding(start = 10.dp, end = 10.dp, top = 10.dp)
+                    .fillMaxWidth()
+                    .fillMaxHeight().imePadding()
+            ) {
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    horizontalArrangement = Arrangement.SpaceBetween,
+                    verticalAlignment = Alignment.CenterVertically
+                ) {
+                    CloseButton(onCancel = {
+                        postViewModel.cancel()
+                        onClose()
+                    })
+
+                    PostButton(
+                        onPost = {
+                            onClose()
+                            postViewModel.upload(context)
+                            postViewModel.selectedServer?.let { account.changeDefaultFileServer(it) }
+                        },
+                        isActive = postViewModel.canPost()
+                    )
+                }
+
+                Row(
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .weight(1f)
+                ) {
+                    Column(
+                        modifier = Modifier
+                            .fillMaxWidth()
+                            .verticalScroll(scroolState)
+                    ) {
+                        ImageVideoPost(postViewModel, account)
+                    }
+                }
+            }
+        }
+    }
+}
+
+fun isNIP94Server(selectedServer: ServersAvailable?): Boolean {
+    return selectedServer == ServersAvailable.NOSTRIMG_NIP_94 ||
+        selectedServer == ServersAvailable.IMGUR_NIP_94 ||
+        selectedServer == ServersAvailable.NOSTR_BUILD_NIP_94 ||
+        selectedServer == ServersAvailable.NOSTRFILES_DEV_NIP_94
+}
+
+@Composable
+fun ImageVideoPost(postViewModel: NewMediaModel, acc: Account) {
+    val scope = rememberCoroutineScope()
+
+    val fileServers = listOf(
+        Triple(ServersAvailable.IMGUR_NIP_94, stringResource(id = R.string.upload_server_imgur_nip94), stringResource(id = R.string.upload_server_imgur_nip94_explainer)),
+        Triple(ServersAvailable.NOSTRIMG_NIP_94, stringResource(id = R.string.upload_server_nostrimg_nip94), stringResource(id = R.string.upload_server_nostrimg_nip94_explainer)),
+        Triple(ServersAvailable.NOSTR_BUILD_NIP_94, stringResource(id = R.string.upload_server_nostrbuild_nip94), stringResource(id = R.string.upload_server_nostrbuild_nip94_explainer)),
+        Triple(ServersAvailable.NOSTRFILES_DEV_NIP_94, stringResource(id = R.string.upload_server_nostrfilesdev_nip94), stringResource(id = R.string.upload_server_nostrfilesdev_nip94_explainer)),
+        Triple(ServersAvailable.NIP95, stringResource(id = R.string.upload_server_relays_nip95), stringResource(id = R.string.upload_server_relays_nip95_explainer))
+    )
+
+    val fileServerOptions = fileServers.map { it.second }
+    val fileServerExplainers = fileServers.map { it.third }
+    val resolver = LocalContext.current.contentResolver
+
+    Row(
+        verticalAlignment = Alignment.CenterVertically,
+        modifier = Modifier
+            .fillMaxWidth()
+            .padding(bottom = 10.dp)
+            .windowInsetsPadding(WindowInsets(0.dp, 0.dp, 0.dp, 0.dp))
+    ) {
+        if (postViewModel.isImage() == true) {
+            AsyncImage(
+                model = postViewModel.galleryUri.toString(),
+                contentDescription = postViewModel.galleryUri.toString(),
+                contentScale = ContentScale.FillWidth,
+                modifier = Modifier
+                    .padding(top = 4.dp)
+                    .fillMaxWidth()
+                    .windowInsetsPadding(WindowInsets(0.dp, 0.dp, 0.dp, 0.dp))
+            )
+        } else if (postViewModel.isVideo() == true && Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
+            var bitmap by remember { mutableStateOf<Bitmap?>(null) }
+
+            LaunchedEffect(key1 = postViewModel.galleryUri) {
+                scope.launch(Dispatchers.IO) {
+                    postViewModel.galleryUri?.let {
+                        try {
+                            bitmap = resolver.loadThumbnail(it, Size(1200, 1000), null)
+                        } catch (e: Exception) {
+                            postViewModel.imageUploadingError.emit("Unable to load file")
+                        }
+                    }
+                }
+            }
+
+            bitmap?.let {
+                Image(
+                    bitmap = it.asImageBitmap(),
+                    contentDescription = "some useful description",
+                    contentScale = ContentScale.FillWidth,
+                    modifier = Modifier
+                        .padding(top = 4.dp)
+                        .fillMaxWidth()
+                )
+            }
+        } else {
+            postViewModel.galleryUri?.let {
+                VideoView(it)
+            }
+        }
+    }
+
+    Row(
+        verticalAlignment = Alignment.CenterVertically,
+        modifier = Modifier.fillMaxWidth()
+    ) {
+        TextSpinner(
+            label = stringResource(id = R.string.file_server),
+            placeholder = fileServers.firstOrNull { it.first == acc.defaultFileServer }?.second ?: fileServers[0].second,
+            options = fileServerOptions,
+            explainers = fileServerExplainers,
+            onSelect = {
+                postViewModel.selectedServer = fileServers[it].first
+            },
+            modifier = Modifier
+                .windowInsetsPadding(WindowInsets(0.dp, 0.dp, 0.dp, 0.dp))
+                .weight(1f)
+        )
+    }
+
+    if (isNIP94Server(postViewModel.selectedServer) ||
+        postViewModel.selectedServer == ServersAvailable.NIP95
+    ) {
+        Row(
+            verticalAlignment = Alignment.CenterVertically,
+            modifier = Modifier
+                .fillMaxWidth()
+                .windowInsetsPadding(WindowInsets(0.dp, 0.dp, 0.dp, 0.dp))
+        ) {
+            OutlinedTextField(
+                label = { Text(text = stringResource(R.string.content_description)) },
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .windowInsetsPadding(WindowInsets(0.dp, 0.dp, 0.dp, 0.dp)),
+                value = postViewModel.description,
+                onValueChange = { postViewModel.description = it },
+                placeholder = {
+                    Text(
+                        text = stringResource(R.string.content_description_example),
+                        color = MaterialTheme.colors.onSurface.copy(alpha = 0.32f)
+                    )
+                },
+                keyboardOptions = KeyboardOptions.Default.copy(
+                    capitalization = KeyboardCapitalization.Sentences
+                )
+            )
+        }
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/ui/actions/NewMessageTagger.kt

@@ -56,19 +56,19 @@ class NewMessageTagger(var channel: Channel?, var mentions: List<User>?, var rep
                 if (results?.key?.type == Nip19.Type.USER) {
                     val user = LocalCache.getOrCreateUser(results.key.hex)
 
-                    "#[${tagIndex(user)}]${results.restOfWord}"
+                    "nostr:${user.pubkeyNpub()}${results.restOfWord}"
                 } else if (results?.key?.type == Nip19.Type.NOTE) {
                     val note = LocalCache.getOrCreateNote(results.key.hex)
 
-                    "#[${tagIndex(note)}]${results.restOfWord}"
+                    "nostr:${note.toNEvent()}${results.restOfWord}"
                 } else if (results?.key?.type == Nip19.Type.EVENT) {
                     val note = LocalCache.getOrCreateNote(results.key.hex)
 
-                    "#[${tagIndex(note)}]${results.restOfWord}"
+                    "nostr:${note.toNEvent()}${results.restOfWord}"
                 } else if (results?.key?.type == Nip19.Type.ADDRESS) {
                     val note = LocalCache.checkGetOrCreateAddressableNote(results.key.hex)
                     if (note != null) {
-                        "#[${tagIndex(note)}]${results.restOfWord}"
+                        "nostr:${note.idNote()}${results.restOfWord}"
                     } else {
                         word
                     }

app/src/main/java/com/vitorpamplona/amethyst/ui/actions/NewPostView.kt

@@ -1,5 +1,9 @@
 package com.vitorpamplona.amethyst.ui.actions
 
+import android.graphics.Bitmap
+import android.net.Uri
+import android.os.Build
+import android.util.Size
 import android.widget.Toast
 import androidx.compose.foundation.BorderStroke
 import androidx.compose.foundation.Image
@@ -13,10 +17,19 @@ import androidx.compose.foundation.text.KeyboardOptions
 import androidx.compose.foundation.verticalScroll
 import androidx.compose.material.*
 import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.ArrowForwardIos
+import androidx.compose.material.icons.filled.Bolt
+import androidx.compose.material.icons.filled.Cancel
 import androidx.compose.material.icons.filled.CurrencyBitcoin
+import androidx.compose.material.icons.outlined.ArrowForwardIos
+import androidx.compose.material.icons.outlined.Bolt
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
+import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.ExperimentalComposeUiApi
 import androidx.compose.ui.Modifier
@@ -25,18 +38,22 @@ import androidx.compose.ui.focus.FocusRequester
 import androidx.compose.ui.focus.focusRequester
 import androidx.compose.ui.focus.onFocusChanged
 import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.asImageBitmap
 import androidx.compose.ui.layout.ContentScale
 import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.platform.LocalSoftwareKeyboardController
 import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.text.input.KeyboardCapitalization
 import androidx.compose.ui.text.input.TextFieldValue
 import androidx.compose.ui.text.style.TextDirection
 import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
 import androidx.compose.ui.window.Dialog
 import androidx.compose.ui.window.DialogProperties
 import androidx.lifecycle.viewmodel.compose.viewModel
+import androidx.navigation.NavController
 import coil.compose.AsyncImage
 import com.vitorpamplona.amethyst.R
 import com.vitorpamplona.amethyst.model.Account
@@ -44,13 +61,17 @@ import com.vitorpamplona.amethyst.model.Note
 import com.vitorpamplona.amethyst.service.model.TextNoteEvent
 import com.vitorpamplona.amethyst.ui.components.*
 import com.vitorpamplona.amethyst.ui.note.ReplyInformation
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.TextSpinner
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.UserLine
 import com.vitorpamplona.amethyst.ui.theme.BitcoinOrange
+import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.delay
+import kotlinx.coroutines.launch
 
 @OptIn(ExperimentalComposeUiApi::class)
 @Composable
-fun NewPostView(onClose: () -> Unit, baseReplyTo: Note? = null, quote: Note? = null, account: Account) {
+fun NewPostView(onClose: () -> Unit, baseReplyTo: Note? = null, quote: Note? = null, account: Account, accountViewModel: AccountViewModel, navController: NavController) {
     val postViewModel: NewPostViewModel = viewModel()
 
     val context = LocalContext.current
@@ -186,6 +207,23 @@ fun NewPostView(onClose: () -> Unit, baseReplyTo: Note? = null, quote: Note? = n
                                 }
                             }
 
+                            val url = postViewModel.contentToAddUrl
+                            if (url != null) {
+                                Row(verticalAlignment = Alignment.CenterVertically) {
+                                    ImageVideoDescription(
+                                        url,
+                                        account.defaultFileServer,
+                                        onAdd = { description, server ->
+                                            postViewModel.upload(url, description, server, context)
+                                            account.changeDefaultFileServer(server)
+                                        },
+                                        onCancel = {
+                                            postViewModel.contentToAddUrl = null
+                                        }
+                                    )
+                                }
+                            }
+
                             val user = postViewModel.account?.userProfile()
                             val lud16 = user?.info?.lnAddress()
 
@@ -234,6 +272,14 @@ fun NewPostView(onClose: () -> Unit, baseReplyTo: Note? = null, quote: Note? = n
                                         } else {
                                             UrlPreview(myUrlPreview, myUrlPreview)
                                         }
+                                    } else if (isBechLink(myUrlPreview)) {
+                                        BechLink(
+                                            myUrlPreview,
+                                            true,
+                                            MaterialTheme.colors.background,
+                                            accountViewModel,
+                                            navController
+                                        )
                                     } else if (noProtocolUrlValidator.matcher(myUrlPreview).matches()) {
                                         UrlPreview("https://$myUrlPreview", myUrlPreview)
                                     }
@@ -261,13 +307,18 @@ fun NewPostView(onClose: () -> Unit, baseReplyTo: Note? = null, quote: Note? = n
                         }
                     }
 
-                    Row(modifier = Modifier.fillMaxWidth()) {
+                    Row(
+                        modifier = Modifier
+                            .fillMaxWidth()
+                            .height(50.dp),
+                        verticalAlignment = Alignment.CenterVertically
+                    ) {
                         UploadFromGallery(
                             isUploading = postViewModel.isUploadingImage,
                             tint = MaterialTheme.colors.onBackground,
-                            modifier = Modifier.padding(bottom = 10.dp)
+                            modifier = Modifier
                         ) {
-                            postViewModel.upload(it, context)
+                            postViewModel.selectImage(it)
                         }
 
                         if (postViewModel.canUsePoll) {
@@ -283,6 +334,10 @@ fun NewPostView(onClose: () -> Unit, baseReplyTo: Note? = null, quote: Note? = n
                                 postViewModel.wantsInvoice = !postViewModel.wantsInvoice
                             }
                         }
+
+                        ForwardZapTo(postViewModel) {
+                            postViewModel.wantsForwardZapTo = !postViewModel.wantsForwardZapTo
+                        }
                     }
                 }
             }
@@ -346,6 +401,87 @@ private fun AddLnInvoiceButton(
     }
 }
 
+@Composable
+private fun ForwardZapTo(
+    postViewModel: NewPostViewModel,
+    onClick: () -> Unit
+) {
+    IconButton(
+        onClick = {
+            onClick()
+        }
+    ) {
+        Box(
+            Modifier
+                .height(20.dp)
+                .width(25.dp)
+        ) {
+            if (!postViewModel.wantsForwardZapTo) {
+                Icon(
+                    imageVector = Icons.Default.Bolt,
+                    contentDescription = stringResource(R.string.zaps),
+                    modifier = Modifier
+                        .size(20.dp)
+                        .align(Alignment.CenterStart),
+                    tint = MaterialTheme.colors.onBackground
+                )
+                Icon(
+                    imageVector = Icons.Default.ArrowForwardIos,
+                    contentDescription = stringResource(R.string.zaps),
+                    modifier = Modifier
+                        .size(13.dp)
+                        .align(Alignment.CenterEnd),
+                    tint = MaterialTheme.colors.onBackground
+                )
+            } else {
+                Icon(
+                    imageVector = Icons.Outlined.Bolt,
+                    contentDescription = stringResource(id = R.string.zaps),
+                    modifier = Modifier
+                        .size(20.dp)
+                        .align(Alignment.CenterStart),
+                    tint = BitcoinOrange
+                )
+                Icon(
+                    imageVector = Icons.Outlined.ArrowForwardIos,
+                    contentDescription = stringResource(id = R.string.zaps),
+                    modifier = Modifier
+                        .size(13.dp)
+                        .align(Alignment.CenterEnd),
+                    tint = BitcoinOrange
+                )
+            }
+        }
+    }
+
+    if (postViewModel.wantsForwardZapTo) {
+        OutlinedTextField(
+            value = postViewModel.forwardZapToEditting,
+            onValueChange = {
+                postViewModel.updateZapForwardTo(it)
+            },
+            modifier = Modifier
+                .fillMaxWidth()
+                .windowInsetsPadding(WindowInsets(0.dp, 0.dp, 0.dp, 0.dp))
+                .padding(0.dp),
+            placeholder = {
+                Text(
+                    text = stringResource(R.string.zap_forward_lnAddress),
+                    color = MaterialTheme.colors.onSurface.copy(alpha = 0.32f),
+                    fontSize = 14.sp
+                )
+            },
+            colors = TextFieldDefaults
+                .outlinedTextFieldColors(
+                    unfocusedBorderColor = Color.Transparent,
+                    focusedBorderColor = Color.Transparent
+                ),
+            visualTransformation = UrlUserTagTransformation(MaterialTheme.colors.primary),
+            textStyle = LocalTextStyle.current.copy(textDirection = TextDirection.Content)
+        )
+    }
+}
+
 @Composable
 fun CloseButton(onCancel: () -> Unit) {
     Button(
@@ -447,3 +583,212 @@ fun SearchButton(onPost: () -> Unit = {}, isActive: Boolean, modifier: Modifier
         )
     }
 }
+
+enum class ServersAvailable {
+    IMGUR,
+    NOSTR_BUILD,
+    NOSTRIMG,
+    NOSTRFILES_DEV,
+    IMGUR_NIP_94,
+    NOSTRIMG_NIP_94,
+    NOSTR_BUILD_NIP_94,
+    NOSTRFILES_DEV_NIP_94,
+    NIP95
+}
+
+@Composable
+fun ImageVideoDescription(
+    uri: Uri,
+    defaultServer: ServersAvailable,
+    onAdd: (String, ServersAvailable) -> Unit,
+    onCancel: () -> Unit
+) {
+    val resolver = LocalContext.current.contentResolver
+    val mediaType = resolver.getType(uri) ?: ""
+    val scope = rememberCoroutineScope()
+
+    val isImage = mediaType.startsWith("image")
+    val isVideo = mediaType.startsWith("video")
+
+    val fileServers = listOf(
+        Triple(ServersAvailable.IMGUR, stringResource(id = R.string.upload_server_imgur), stringResource(id = R.string.upload_server_imgur_explainer)),
+        Triple(ServersAvailable.NOSTRIMG, stringResource(id = R.string.upload_server_nostrimg), stringResource(id = R.string.upload_server_nostrimg_explainer)),
+        Triple(ServersAvailable.NOSTR_BUILD, stringResource(id = R.string.upload_server_nostrbuild), stringResource(id = R.string.upload_server_nostrbuild_explainer)),
+        Triple(ServersAvailable.NOSTRFILES_DEV, stringResource(id = R.string.upload_server_nostrfilesdev), stringResource(id = R.string.upload_server_nostrfilesdev_explainer)),
+        Triple(ServersAvailable.IMGUR_NIP_94, stringResource(id = R.string.upload_server_imgur_nip94), stringResource(id = R.string.upload_server_imgur_nip94_explainer)),
+        Triple(ServersAvailable.NOSTRIMG_NIP_94, stringResource(id = R.string.upload_server_nostrimg_nip94), stringResource(id = R.string.upload_server_nostrimg_nip94_explainer)),
+        Triple(ServersAvailable.NOSTR_BUILD_NIP_94, stringResource(id = R.string.upload_server_nostrbuild_nip94), stringResource(id = R.string.upload_server_nostrbuild_nip94_explainer)),
+        Triple(ServersAvailable.NOSTRFILES_DEV_NIP_94, stringResource(id = R.string.upload_server_nostrfilesdev_nip94), stringResource(id = R.string.upload_server_nostrfilesdev_nip94_explainer)),
+        Triple(ServersAvailable.NIP95, stringResource(id = R.string.upload_server_relays_nip95), stringResource(id = R.string.upload_server_relays_nip95_explainer))
+    )
+
+    val fileServerOptions = fileServers.map { it.second }
+    val fileServerExplainers = fileServers.map { it.third }
+
+    var selectedServer by remember { mutableStateOf(defaultServer) }
+    var message by remember { mutableStateOf("") }
+
+    Column(
+        modifier = Modifier
+            .fillMaxWidth()
+            .padding(start = 30.dp, end = 30.dp)
+            .clip(shape = RoundedCornerShape(10.dp))
+            .border(
+                1.dp,
+                MaterialTheme.colors.onSurface.copy(alpha = 0.12f),
+                RoundedCornerShape(15.dp)
+            )
+    ) {
+        Column(
+            modifier = Modifier
+                .fillMaxWidth()
+                .padding(30.dp)
+        ) {
+            Row(
+                verticalAlignment = Alignment.CenterVertically,
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .padding(bottom = 10.dp)
+            ) {
+                Text(
+                    text = stringResource(
+                        if (isImage) {
+                            R.string.content_description_add_image
+                        } else {
+                            if (isVideo) {
+                                R.string.content_description_add_video
+                            } else {
+                                R.string.content_description_add_document
+                            }
+                        }
+                    ),
+                    fontSize = 20.sp,
+                    fontWeight = FontWeight.W500,
+                    modifier = Modifier
+                        .padding(start = 10.dp)
+                        .weight(1.0f)
+                        .windowInsetsPadding(WindowInsets(0.dp, 0.dp, 0.dp, 0.dp))
+                )
+
+                IconButton(
+                    modifier = Modifier.size(30.dp),
+                    onClick = onCancel
+                ) {
+                    Icon(
+                        imageVector = Icons.Default.Cancel,
+                        null,
+                        modifier = Modifier
+                            .padding(end = 5.dp)
+                            .size(30.dp),
+                        tint = MaterialTheme.colors.onSurface.copy(alpha = 0.32f)
+                    )
+                }
+            }
+
+            Divider()
+
+            Row(
+                verticalAlignment = Alignment.CenterVertically,
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .padding(bottom = 10.dp)
+                    .windowInsetsPadding(WindowInsets(0.dp, 0.dp, 0.dp, 0.dp))
+            ) {
+                if (mediaType.startsWith("image")) {
+                    AsyncImage(
+                        model = uri.toString(),
+                        contentDescription = uri.toString(),
+                        contentScale = ContentScale.FillWidth,
+                        modifier = Modifier
+                            .padding(top = 4.dp)
+                            .fillMaxWidth()
+                            .windowInsetsPadding(WindowInsets(0.dp, 0.dp, 0.dp, 0.dp))
+                    )
+                } else if (mediaType.startsWith("video") && Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
+                    var bitmap by remember { mutableStateOf<Bitmap?>(null) }
+
+                    LaunchedEffect(key1 = uri) {
+                        scope.launch(Dispatchers.IO) {
+                            bitmap = resolver.loadThumbnail(uri, Size(1200, 1000), null)
+                        }
+                    }
+
+                    bitmap?.let {
+                        Image(
+                            bitmap = it.asImageBitmap(),
+                            contentDescription = "some useful description",
+                            contentScale = ContentScale.FillWidth,
+                            modifier = Modifier
+                                .padding(top = 4.dp)
+                                .fillMaxWidth()
+                        )
+                    }
+                } else {
+                    VideoView(uri)
+                }
+            }
+
+            Row(
+                verticalAlignment = Alignment.CenterVertically,
+                modifier = Modifier.fillMaxWidth()
+            ) {
+                TextSpinner(
+                    label = stringResource(id = R.string.file_server),
+                    placeholder = fileServers.filter { it.first == defaultServer }.firstOrNull()?.second ?: fileServers[0].second,
+                    options = fileServerOptions,
+                    explainers = fileServerExplainers,
+                    onSelect = {
+                        selectedServer = fileServers[it].first
+                    },
+                    modifier = Modifier
+                        .windowInsetsPadding(WindowInsets(0.dp, 0.dp, 0.dp, 0.dp))
+                        .weight(1f)
+                )
+            }
+
+            if (isNIP94Server(selectedServer) ||
+                selectedServer == ServersAvailable.NIP95
+            ) {
+                Row(
+                    verticalAlignment = Alignment.CenterVertically,
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .windowInsetsPadding(WindowInsets(0.dp, 0.dp, 0.dp, 0.dp))
+                ) {
+                    OutlinedTextField(
+                        label = { Text(text = stringResource(R.string.content_description)) },
+                        modifier = Modifier
+                            .fillMaxWidth()
+                            .windowInsetsPadding(WindowInsets(0.dp, 0.dp, 0.dp, 0.dp)),
+                        value = message,
+                        onValueChange = { message = it },
+                        placeholder = {
+                            Text(
+                                text = stringResource(R.string.content_description_example),
+                                color = MaterialTheme.colors.onSurface.copy(alpha = 0.32f)
+                            )
+                        },
+                        keyboardOptions = KeyboardOptions.Default.copy(
+                            capitalization = KeyboardCapitalization.Sentences
+                        )
+                    )
+                }
+            }
+
+            Button(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .padding(vertical = 10.dp),
+                onClick = {
+                    onAdd(message, selectedServer)
+                },
+                shape = RoundedCornerShape(15.dp),
+                colors = ButtonDefaults.buttonColors(
+                    backgroundColor = MaterialTheme.colors.primary
+                )
+            ) {
+                Text(text = stringResource(R.string.add_content), color = Color.White, fontSize = 20.sp)
+            }
+        }
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/ui/actions/NewPostViewModel.kt

@@ -13,12 +13,12 @@ import androidx.compose.ui.text.input.TextFieldValue
 import androidx.lifecycle.ViewModel
 import androidx.lifecycle.viewModelScope
 import com.vitorpamplona.amethyst.model.*
+import com.vitorpamplona.amethyst.service.FileHeader
 import com.vitorpamplona.amethyst.service.model.PrivateDmEvent
 import com.vitorpamplona.amethyst.service.model.TextNoteEvent
 import com.vitorpamplona.amethyst.ui.components.isValidURL
 import com.vitorpamplona.amethyst.ui.components.noProtocolUrlValidator
 import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.delay
 import kotlinx.coroutines.flow.MutableSharedFlow
 import kotlinx.coroutines.launch
 
@@ -36,6 +36,10 @@ open class NewPostViewModel : ViewModel() {
 
     var userSuggestions by mutableStateOf<List<User>>(emptyList())
     var userSuggestionAnchor: TextRange? = null
+    var userSuggestionsMainMessage: Boolean? = null
+
+    // Images and Videos
+    var contentToAddUrl by mutableStateOf<Uri?>(null)
 
     // Polls
     var canUsePoll by mutableStateOf(false)
@@ -57,6 +61,11 @@ open class NewPostViewModel : ViewModel() {
     var canAddInvoice by mutableStateOf(false)
     var wantsInvoice by mutableStateOf(false)
 
+    // Forward Zap to
+    var wantsForwardZapTo by mutableStateOf(false)
+    var forwardZapTo by mutableStateOf<User?>(null)
+    var forwardZapToEditting by mutableStateOf(TextFieldValue(""))
+
     open fun load(account: Account, replyingTo: Note?, quote: Note?) {
         originalNote = replyingTo
         replyingTo?.let { replyNote ->
@@ -78,11 +87,17 @@ open class NewPostViewModel : ViewModel() {
         }
 
         quote?.let {
-            message = TextFieldValue(message.text + "\n\n@${it.idNote()}")
+            message = TextFieldValue(message.text + "\n\nnostr:${it.toNEvent()}")
+            urlPreview = findUrlInMessage()
         }
 
         canAddInvoice = account.userProfile().info?.lnAddress() != null
         canUsePoll = originalNote?.event !is PrivateDmEvent && originalNote?.channel() == null
+        contentToAddUrl = null
+
+        wantsForwardZapTo = false
+        forwardZapTo = null
+        forwardZapToEditting = TextFieldValue("")
 
         this.account = account
     }
@@ -91,45 +106,67 @@ open class NewPostViewModel : ViewModel() {
         val tagger = NewMessageTagger(originalNote?.channel(), mentions, replyTos, message.text)
         tagger.run()
 
-        if (wantsPoll) {
-            account?.sendPoll(tagger.message, tagger.replyTos, tagger.mentions, pollOptions, valueMaximum, valueMinimum, consensusThreshold, closedAt)
-        } else if (originalNote?.channel() != null) {
-            account?.sendChannelMessage(tagger.message, tagger.channel!!.idHex, tagger.replyTos, tagger.mentions)
-        } else if (originalNote?.event is PrivateDmEvent) {
-            account?.sendPrivateMessage(tagger.message, originalNote!!.author!!.pubkeyHex, originalNote!!, tagger.mentions)
+        val zapReceiver = if (wantsForwardZapTo) {
+            if (forwardZapTo != null) {
+                forwardZapTo?.info?.lud16 ?: forwardZapTo?.info?.lud06
+            } else {
+                forwardZapToEditting.text
+            }
         } else {
-            account?.sendPost(tagger.message, tagger.replyTos, tagger.mentions)
+            null
+        }
+
+        if (wantsPoll) {
+            account?.sendPoll(tagger.message, tagger.replyTos, tagger.mentions, pollOptions, valueMaximum, valueMinimum, consensusThreshold, closedAt, zapReceiver)
+        } else if (originalNote?.channel() != null) {
+            account?.sendChannelMessage(tagger.message, tagger.channel!!.idHex, tagger.replyTos, tagger.mentions, zapReceiver)
+        } else if (originalNote?.event is PrivateDmEvent) {
+            account?.sendPrivateMessage(tagger.message, originalNote!!.author!!.pubkeyHex, originalNote!!, tagger.mentions, zapReceiver)
+        } else {
+            account?.sendPost(tagger.message, tagger.replyTos, tagger.mentions, null, zapReceiver)
         }
 
         cancel()
     }
 
-    fun upload(it: Uri, context: Context) {
+    fun upload(it: Uri, description: String, server: ServersAvailable, context: Context) {
         isUploadingImage = true
+        contentToAddUrl = null
 
-        ImageUploader.uploadImage(
-            uri = it,
-            contentResolver = context.contentResolver,
-            onSuccess = { imageUrl ->
-                isUploadingImage = false
-                message = TextFieldValue(message.text + "\n\n" + imageUrl)
+        val contentResolver = context.contentResolver
 
-                viewModelScope.launch(Dispatchers.IO) {
-                    delay(2000)
-                    urlPreview = findUrlInMessage()
-                }
-            },
-            onError = {
-                isUploadingImage = false
-                viewModelScope.launch {
-                    imageUploadingError.emit("Failed to upload the image / video")
-                }
+        if (server == ServersAvailable.NIP95) {
+            val contentType = contentResolver.getType(it)
+            contentResolver.openInputStream(it)?.use {
+                createNIP95Record(it.readBytes(), contentType, description)
             }
-        )
+        } else {
+            ImageUploader.uploadImage(
+                uri = it,
+                server = server,
+                contentResolver = contentResolver,
+                onSuccess = { imageUrl, mimeType ->
+                    if (isNIP94Server(server)) {
+                        createNIP94Record(imageUrl, mimeType, description)
+                    } else {
+                        isUploadingImage = false
+                        message = TextFieldValue(message.text + "\n\n" + imageUrl)
+                        urlPreview = findUrlInMessage()
+                    }
+                },
+                onError = {
+                    isUploadingImage = false
+                    viewModelScope.launch {
+                        imageUploadingError.emit("Failed to upload the image / video")
+                    }
+                }
+            )
+        }
     }
 
     open fun cancel() {
         message = TextFieldValue("")
+        contentToAddUrl = null
         urlPreview = null
         isUploadingImage = false
         mentions = null
@@ -143,6 +180,14 @@ open class NewPostViewModel : ViewModel() {
         closedAt = null
 
         wantsInvoice = false
+
+        wantsForwardZapTo = false
+        forwardZapTo = null
+        forwardZapToEditting = TextFieldValue("")
+
+        userSuggestions = emptyList()
+        userSuggestionAnchor = null
+        userSuggestionsMainMessage = null
     }
 
     open fun findUrlInMessage(): String? {
@@ -164,6 +209,21 @@ open class NewPostViewModel : ViewModel() {
         if (it.selection.collapsed) {
             val lastWord = it.text.substring(0, it.selection.end).substringAfterLast("\n").substringAfterLast(" ")
             userSuggestionAnchor = it.selection
+            userSuggestionsMainMessage = true
+            if (lastWord.startsWith("@") && lastWord.length > 2) {
+                userSuggestions = LocalCache.findUsersStartingWith(lastWord.removePrefix("@"))
+            } else {
+                userSuggestions = emptyList()
+            }
+        }
+    }
+
+    open fun updateZapForwardTo(it: TextFieldValue) {
+        forwardZapToEditting = it
+        if (it.selection.collapsed) {
+            val lastWord = it.text.substring(0, it.selection.end).substringAfterLast("\n").substringAfterLast(" ")
+            userSuggestionAnchor = it.selection
+            userSuggestionsMainMessage = false
             if (lastWord.startsWith("@") && lastWord.length > 2) {
                 userSuggestions = LocalCache.findUsersStartingWith(lastWord.removePrefix("@"))
             } else {
@@ -174,15 +234,29 @@ open class NewPostViewModel : ViewModel() {
 
     open fun autocompleteWithUser(item: User) {
         userSuggestionAnchor?.let {
-            val lastWord = message.text.substring(0, it.end).substringAfterLast("\n").substringAfterLast(" ")
-            val lastWordStart = it.end - lastWord.length
-            val wordToInsert = "@${item.pubkeyNpub()}"
+            if (userSuggestionsMainMessage == true) {
+                val lastWord = message.text.substring(0, it.end).substringAfterLast("\n").substringAfterLast(" ")
+                val lastWordStart = it.end - lastWord.length
+                val wordToInsert = "@${item.pubkeyNpub()}"
+
+                message = TextFieldValue(
+                    message.text.replaceRange(lastWordStart, it.end, wordToInsert),
+                    TextRange(lastWordStart + wordToInsert.length, lastWordStart + wordToInsert.length)
+                )
+            } else {
+                val lastWord = forwardZapToEditting.text.substring(0, it.end).substringAfterLast("\n").substringAfterLast(" ")
+                val lastWordStart = it.end - lastWord.length
+                val wordToInsert = "@${item.pubkeyNpub()}"
+                forwardZapTo = item
+
+                forwardZapToEditting = TextFieldValue(
+                    forwardZapToEditting.text.replaceRange(lastWordStart, it.end, wordToInsert),
+                    TextRange(lastWordStart + wordToInsert.length, lastWordStart + wordToInsert.length)
+                )
+            }
 
-            message = TextFieldValue(
-                message.text.replaceRange(lastWordStart, it.end, wordToInsert),
-                TextRange(lastWordStart + wordToInsert.length, lastWordStart + wordToInsert.length)
-            )
             userSuggestionAnchor = null
+            userSuggestionsMainMessage = null
             userSuggestions = emptyList()
         }
     }
@@ -193,7 +267,7 @@ open class NewPostViewModel : ViewModel() {
 
     fun canPost(): Boolean {
         return message.text.isNotBlank() && !isUploadingImage && !wantsInvoice &&
-            (!wantsPoll || pollOptions.values.all { it.isNotEmpty() })
+            (!wantsPoll || pollOptions.values.all { it.isNotEmpty() }) && contentToAddUrl == null
     }
 
     fun includePollHashtagInMessage(include: Boolean, hashtag: String) {
@@ -208,4 +282,67 @@ open class NewPostViewModel : ViewModel() {
             )
         }
     }
+
+    fun createNIP94Record(imageUrl: String, mimeType: String?, description: String) {
+        viewModelScope.launch(Dispatchers.IO) {
+            // Images don't seem to be ready immediately after upload
+            FileHeader.prepare(
+                imageUrl,
+                mimeType,
+                description,
+                onReady = {
+                    val note = account?.sendHeader(it)
+
+                    isUploadingImage = false
+
+                    if (note == null) {
+                        message = TextFieldValue(message.text + "\n\n" + imageUrl)
+                    } else {
+                        message = TextFieldValue(message.text + "\n\nnostr:" + note.toNEvent())
+                    }
+
+                    urlPreview = findUrlInMessage()
+                },
+                onError = {
+                    isUploadingImage = false
+                    viewModelScope.launch {
+                        imageUploadingError.emit("Failed to upload the image / video")
+                    }
+                }
+            )
+        }
+    }
+
+    fun createNIP95Record(bytes: ByteArray, mimeType: String?, description: String) {
+        viewModelScope.launch(Dispatchers.IO) {
+            FileHeader.prepare(
+                bytes,
+                "",
+                mimeType,
+                description,
+                onReady = {
+                    val nip95 = account?.createNip95(bytes, headerInfo = it)
+                    val note = nip95?.let { it1 -> account?.sendNip95(it1.first, it1.second) }
+
+                    isUploadingImage = false
+
+                    note?.let {
+                        message = TextFieldValue(message.text + "\n\nnostr:" + it.toNEvent())
+                    }
+
+                    urlPreview = findUrlInMessage()
+                },
+                onError = {
+                    isUploadingImage = false
+                    viewModelScope.launch {
+                        imageUploadingError.emit("Failed to upload the image / video")
+                    }
+                }
+            )
+        }
+    }
+
+    fun selectImage(uri: Uri) {
+        contentToAddUrl = uri
+    }
 }

app/src/main/java/com/vitorpamplona/amethyst/ui/actions/NewUserMetadataViewModel.kt

@@ -170,8 +170,9 @@ class NewUserMetadataViewModel : ViewModel() {
 
         ImageUploader.uploadImage(
             uri = it,
+            server = account.defaultFileServer,
             contentResolver = context.contentResolver,
-            onSuccess = { imageUrl ->
+            onSuccess = { imageUrl, mimeType ->
                 onUploading(false)
                 onUploaded(imageUrl)
             },

app/src/main/java/com/vitorpamplona/amethyst/ui/actions/SaveToGallery.kt

@@ -18,6 +18,7 @@ import com.google.accompanist.permissions.isGranted
 import com.google.accompanist.permissions.rememberPermissionState
 import com.vitorpamplona.amethyst.R
 import kotlinx.coroutines.launch
+import java.io.File
 
 /**
  * A button to save the remote image to the gallery.
@@ -83,3 +84,63 @@ fun SaveToGallery(url: String) {
         Text(text = stringResource(id = R.string.save), color = Color.White)
     }
 }
+
+@OptIn(ExperimentalPermissionsApi::class)
+@Composable
+fun SaveToGallery(localFile: File, mimeType: String?) {
+    val localContext = LocalContext.current
+    val scope = rememberCoroutineScope()
+
+    fun saveImage() {
+        ImageSaver.saveImage(
+            context = localContext,
+            localFile = localFile,
+            mimeType = mimeType,
+            onSuccess = {
+                scope.launch {
+                    Toast.makeText(
+                        localContext,
+                        localContext.getString(R.string.image_saved_to_the_gallery),
+                        Toast.LENGTH_SHORT
+                    )
+                        .show()
+                }
+            },
+            onError = {
+                scope.launch {
+                    Toast.makeText(
+                        localContext,
+                        localContext.getString(R.string.failed_to_save_the_image),
+                        Toast.LENGTH_SHORT
+                    )
+                        .show()
+                }
+            }
+        )
+    }
+
+    val writeStoragePermissionState = rememberPermissionState(
+        Manifest.permission.WRITE_EXTERNAL_STORAGE
+    ) { isGranted ->
+        if (isGranted) {
+            saveImage()
+        }
+    }
+
+    Button(
+        onClick = {
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q || writeStoragePermissionState.status.isGranted) {
+                saveImage()
+            } else {
+                writeStoragePermissionState.launchPermissionRequest()
+            }
+        },
+        shape = RoundedCornerShape(20.dp),
+        colors = ButtonDefaults
+            .buttonColors(
+                backgroundColor = Color.Gray
+            )
+    ) {
+        Text(text = stringResource(id = R.string.save), color = Color.White)
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/ui/buttons/FabColumn.kt

@@ -13,9 +13,7 @@ import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.unit.dp
 import com.vitorpamplona.amethyst.R
 import com.vitorpamplona.amethyst.model.Account
-import com.vitorpamplona.amethyst.service.NostrAccountDataSource
 import com.vitorpamplona.amethyst.ui.actions.NewPollView
-import com.vitorpamplona.amethyst.ui.actions.NewPostView
 
 @Composable
 fun FabColumn(account: Account) {
@@ -88,7 +86,7 @@ fun FabColumn(account: Account) {
     }
 
     if (wantsToPost) {
-        NewPostView({ wantsToPost = false }, account = NostrAccountDataSource.account)
+        // NewPostView({ wantsToPost = false }, account = NostrAccountDataSource.account)
     }
 
     if (wantsToPoll) {

app/src/main/java/com/vitorpamplona/amethyst/ui/buttons/NewNoteButton.kt

@@ -16,18 +16,20 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.unit.dp
+import androidx.navigation.NavController
 import com.vitorpamplona.amethyst.R
 import com.vitorpamplona.amethyst.model.Account
 import com.vitorpamplona.amethyst.ui.actions.NewPostView
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
 
 @Composable
-fun NewNoteButton(account: Account) {
+fun NewNoteButton(account: Account, accountViewModel: AccountViewModel, navController: NavController) {
     var wantsToPost by remember {
         mutableStateOf(false)
     }
 
     if (wantsToPost) {
-        NewPostView({ wantsToPost = false }, account = account)
+        NewPostView({ wantsToPost = false }, account = account, accountViewModel = accountViewModel, navController = navController)
     }
 
     OutlinedButton(

app/src/main/java/com/vitorpamplona/amethyst/ui/components/AsyncImageProxy.kt

@@ -22,7 +22,7 @@ data class ResizeImage(val url: String?, val size: Dp) {
         val imgPx = 200 // with(LocalDensity.current) { model.size.toPx().toInt() }
         val base64 = Base64.getUrlEncoder().encodeToString(url.toByteArray())
 
-        return "https://d12fidohs5rlxk.cloudfront.net/preset:sharp/rs:fit:$imgPx:$imgPx:0/gravity:sm/$base64"
+        return url // "https://d12fidohs5rlxk.cloudfront.net/preset:sharp/rs:fit:$imgPx:$imgPx:0/gravity:sm/$base64"
     }
 }
 

app/src/main/java/com/vitorpamplona/amethyst/ui/components/ClickableRoute.kt

@@ -5,15 +5,23 @@ import androidx.compose.material.LocalTextStyle
 import androidx.compose.material.MaterialTheme
 import androidx.compose.material.Text
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.livedata.observeAsState
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
 import androidx.compose.ui.text.buildAnnotatedString
 import androidx.compose.ui.text.withStyle
 import androidx.navigation.NavController
 import com.vitorpamplona.amethyst.model.LocalCache
+import com.vitorpamplona.amethyst.model.Note
+import com.vitorpamplona.amethyst.model.User
 import com.vitorpamplona.amethyst.service.model.ChannelCreateEvent
 import com.vitorpamplona.amethyst.service.model.PrivateDmEvent
 import com.vitorpamplona.amethyst.service.nip19.Nip19
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
 
 @Composable
 fun ClickableRoute(
@@ -21,56 +29,190 @@ fun ClickableRoute(
     navController: NavController
 ) {
     if (nip19.type == Nip19.Type.USER) {
-        val userBase = LocalCache.getOrCreateUser(nip19.hex)
-
-        val userState by userBase.live().metadata.observeAsState()
-        val user = userState?.user ?: return
-
-        CreateClickableText(user.toBestDisplayName(), nip19.additionalChars, "User/${nip19.hex}", navController)
+        DisplayUser(nip19, navController)
     } else if (nip19.type == Nip19.Type.ADDRESS) {
-        val noteBase = LocalCache.checkGetOrCreateAddressableNote(nip19.hex)
+        DisplayAddress(nip19, navController)
+    } else if (nip19.type == Nip19.Type.NOTE) {
+        DisplayNote(nip19, navController)
+    } else if (nip19.type == Nip19.Type.EVENT) {
+        DisplayEvent(nip19, navController)
+    } else {
+        Text(
+            "@${nip19.hex}${nip19.additionalChars} "
+        )
+    }
+}
 
-        if (noteBase == null) {
-            Text(
-                "@${nip19.hex}${nip19.additionalChars} "
+@Composable
+private fun DisplayEvent(
+    nip19: Nip19.Return,
+    navController: NavController
+) {
+    var noteBase by remember { mutableStateOf<Note?>(null) }
+
+    LaunchedEffect(key1 = nip19.hex) {
+        withContext(Dispatchers.IO) {
+            noteBase = LocalCache.checkGetOrCreateNote(nip19.hex)
+        }
+    }
+
+    noteBase?.let {
+        val noteState by it.live().metadata.observeAsState()
+        val note = noteState?.note ?: return
+        val channel = note.channel()
+
+        if (note.event is ChannelCreateEvent) {
+            CreateClickableText(
+                note.idDisplayNote(),
+                nip19.additionalChars,
+                "Channel/${nip19.hex}",
+                navController
+            )
+        } else if (note.event is PrivateDmEvent) {
+            CreateClickableText(
+                note.idDisplayNote(),
+                nip19.additionalChars,
+                "Room/${note.author?.pubkeyHex}",
+                navController
+            )
+        } else if (channel != null) {
+            CreateClickableText(
+                channel.toBestDisplayName(),
+                nip19.additionalChars,
+                "Channel/${note.channel()?.idHex}",
+                navController
             )
         } else {
-            val noteState by noteBase.live().metadata.observeAsState()
-            val note = noteState?.note ?: return
-
-            CreateClickableText(note.idDisplayNote(), nip19.additionalChars, "Note/${nip19.hex}", navController)
+            CreateClickableText(
+                note.idDisplayNote(),
+                nip19.additionalChars,
+                "Event/${nip19.hex}",
+                navController
+            )
         }
-    } else if (nip19.type == Nip19.Type.NOTE) {
-        val noteBase = LocalCache.getOrCreateNote(nip19.hex)
-        val noteState by noteBase.live().metadata.observeAsState()
+    }
+
+    if (noteBase == null) {
+        Text(
+            "@${nip19.hex}${nip19.additionalChars} "
+        )
+    }
+}
+
+@Composable
+private fun DisplayNote(
+    nip19: Nip19.Return,
+    navController: NavController
+) {
+    var noteBase by remember { mutableStateOf<Note?>(null) }
+
+    LaunchedEffect(key1 = nip19.hex) {
+        withContext(Dispatchers.IO) {
+            noteBase = LocalCache.checkGetOrCreateNote(nip19.hex)
+        }
+    }
+
+    noteBase?.let {
+        val noteState by it.live().metadata.observeAsState()
         val note = noteState?.note ?: return
         val channel = note.channel()
 
         if (note.event is ChannelCreateEvent) {
-            CreateClickableText(note.idDisplayNote(), nip19.additionalChars, "Channel/${nip19.hex}", navController)
+            CreateClickableText(
+                note.idDisplayNote(),
+                nip19.additionalChars,
+                "Channel/${nip19.hex}",
+                navController
+            )
         } else if (note.event is PrivateDmEvent) {
-            CreateClickableText(note.idDisplayNote(), nip19.additionalChars, "Room/${note.author?.pubkeyHex}", navController)
+            CreateClickableText(
+                note.idDisplayNote(),
+                nip19.additionalChars,
+                "Room/${note.author?.pubkeyHex}",
+                navController
+            )
         } else if (channel != null) {
-            CreateClickableText(channel.toBestDisplayName(), nip19.additionalChars, "Channel/${note.channel()?.idHex}", navController)
+            CreateClickableText(
+                channel.toBestDisplayName(),
+                nip19.additionalChars,
+                "Channel/${note.channel()?.idHex}",
+                navController
+            )
         } else {
-            CreateClickableText(note.idDisplayNote(), nip19.additionalChars, "Note/${nip19.hex}", navController)
+            CreateClickableText(
+                note.idDisplayNote(),
+                nip19.additionalChars,
+                "Note/${nip19.hex}",
+                navController
+            )
         }
-    } else if (nip19.type == Nip19.Type.EVENT) {
-        val noteBase = LocalCache.getOrCreateNote(nip19.hex)
-        val noteState by noteBase.live().metadata.observeAsState()
-        val note = noteState?.note ?: return
-        val channel = note.channel()
+    }
 
-        if (note.event is ChannelCreateEvent) {
-            CreateClickableText(note.idDisplayNote(), nip19.additionalChars, "Channel/${nip19.hex}", navController)
-        } else if (note.event is PrivateDmEvent) {
-            CreateClickableText(note.idDisplayNote(), nip19.additionalChars, "Room/${note.author?.pubkeyHex}", navController)
-        } else if (channel != null) {
-            CreateClickableText(channel.toBestDisplayName(), nip19.additionalChars, "Channel/${note.channel()?.idHex}", navController)
-        } else {
-            CreateClickableText(note.idDisplayNote(), nip19.additionalChars, "Event/${nip19.hex}", navController)
+    if (noteBase == null) {
+        Text(
+            "@${nip19.hex}${nip19.additionalChars} "
+        )
+    }
+}
+
+@Composable
+private fun DisplayAddress(
+    nip19: Nip19.Return,
+    navController: NavController
+) {
+    var noteBase by remember { mutableStateOf<Note?>(null) }
+
+    LaunchedEffect(key1 = nip19.hex) {
+        withContext(Dispatchers.IO) {
+            noteBase = LocalCache.checkGetOrCreateAddressableNote(nip19.hex)
         }
-    } else {
+    }
+
+    noteBase?.let {
+        val noteState by it.live().metadata.observeAsState()
+        val note = noteState?.note ?: return
+
+        CreateClickableText(
+            note.idDisplayNote(),
+            nip19.additionalChars,
+            "Note/${nip19.hex}",
+            navController
+        )
+    }
+
+    if (noteBase == null) {
+        Text(
+            "@${nip19.hex}${nip19.additionalChars} "
+        )
+    }
+}
+
+@Composable
+private fun DisplayUser(
+    nip19: Nip19.Return,
+    navController: NavController
+) {
+    var userBase by remember { mutableStateOf<User?>(null) }
+
+    LaunchedEffect(key1 = nip19.hex) {
+        withContext(Dispatchers.IO) {
+            userBase = LocalCache.checkGetOrCreateUser(nip19.hex)
+        }
+    }
+
+    userBase?.let {
+        val userState by it.live().metadata.observeAsState()
+        val user = userState?.user ?: return
+
+        CreateClickableText(
+            user.toBestDisplayName(),
+            nip19.additionalChars,
+            "User/${nip19.hex}",
+            navController
+        )
+    }
+
+    if (userBase == null) {
         Text(
             "@${nip19.hex}${nip19.additionalChars} "
         )

app/src/main/java/com/vitorpamplona/amethyst/ui/components/ClickableUrl.kt

@@ -11,9 +11,11 @@ import androidx.compose.ui.text.AnnotatedString
 fun ClickableUrl(urlText: String, url: String) {
     val uri = LocalUriHandler.current
 
+    val doubleCheckedUrl = if (url.contains("://")) url else "https://$url"
+
     ClickableText(
         text = AnnotatedString(urlText),
-        onClick = { runCatching { uri.openUri(url) } },
+        onClick = { runCatching { uri.openUri(doubleCheckedUrl) } },
         style = LocalTextStyle.current.copy(color = MaterialTheme.colors.primary)
     )
 }

app/src/main/java/com/vitorpamplona/amethyst/ui/components/ExpandableRichTextViewer.kt

@@ -42,11 +42,13 @@ fun ExpandableRichTextViewer(
 ) {
     var showFullText by remember { mutableStateOf(false) }
 
-    // Cuts the text in the first space after 350
-    val firstSpaceAfterCut = content.indexOf(' ', SHORT_TEXT_LENGTH).let { if (it < 0) content.length else it }
-    val firstNewLineAfterCut = content.indexOf('\n', SHORT_TEXT_LENGTH).let { if (it < 0) content.length else it }
+    val whereToCut = remember(content) {
+        // Cuts the text in the first space after 350
+        val firstSpaceAfterCut = content.indexOf(' ', SHORT_TEXT_LENGTH).let { if (it < 0) content.length else it }
+        val firstNewLineAfterCut = content.indexOf('\n', SHORT_TEXT_LENGTH).let { if (it < 0) content.length else it }
 
-    val whereToCut = minOf(firstSpaceAfterCut, firstNewLineAfterCut)
+        minOf(firstSpaceAfterCut, firstNewLineAfterCut)
+    }
 
     val text = if (showFullText) {
         content

app/src/main/java/com/vitorpamplona/amethyst/ui/components/InvoiceRequest.kt

@@ -37,7 +37,6 @@ import androidx.compose.ui.unit.sp
 import com.vitorpamplona.amethyst.R
 import com.vitorpamplona.amethyst.model.Account
 import com.vitorpamplona.amethyst.service.lnurl.LightningAddressResolver
-import com.vitorpamplona.amethyst.service.model.LnZapEvent
 import kotlinx.coroutines.launch
 
 @Composable
@@ -136,7 +135,7 @@ fun InvoiceRequest(
             Button(
                 modifier = Modifier.fillMaxWidth().padding(vertical = 10.dp),
                 onClick = {
-                    val zapRequest = account.createZapRequestFor(toUserPubKeyHex, message, LnZapEvent.ZapType.PUBLIC)
+                    val zapRequest = account.createZapRequestFor(toUserPubKeyHex, message, account.defaultZapType)
 
                     LightningAddressResolver().lnAddressInvoice(
                         lud16,

app/src/main/java/com/vitorpamplona/amethyst/ui/components/RichTextViewer.kt

@@ -51,7 +51,7 @@ import java.net.URL
 import java.util.regex.Pattern
 
 val imageExtensions = listOf("png", "jpg", "gif", "bmp", "jpeg", "webp", "svg")
-val videoExtensions = listOf("mp4", "avi", "wmv", "mpg", "amv", "webm", "mov")
+val videoExtensions = listOf("mp4", "avi", "wmv", "mpg", "amv", "webm", "mov", "mp3")
 
 // Group 1 = url, group 4 additional chars
 val noProtocolUrlValidator = Pattern.compile("(([\\w\\d-]+\\.)*[a-zA-Z][\\w-]+[\\.\\:]\\w+([\\/\\?\\=\\&\\#\\.]?[\\w-]+)*\\/?)(.*)")
@@ -59,7 +59,7 @@ val noProtocolUrlValidator = Pattern.compile("(([\\w\\d-]+\\.)*[a-zA-Z][\\w-]+[\
 val tagIndex = Pattern.compile("\\#\\[([0-9]+)\\](.*)")
 
 val mentionsPattern: Pattern = Pattern.compile("@([A-Za-z0-9_\\-]+)")
-val hashTagsPattern: Pattern = Pattern.compile("#([a-z0-9_\\-]+)(.*)", Pattern.CASE_INSENSITIVE)
+val hashTagsPattern: Pattern = Pattern.compile("#([^\\s!@#\$%^&*()=+./,\\[{\\]};:'\"?><]+)(.*)", Pattern.CASE_INSENSITIVE)
 val urlPattern: Pattern = Patterns.WEB_URL
 
 fun isValidURL(url: String?): Boolean {
@@ -75,6 +75,14 @@ fun isValidURL(url: String?): Boolean {
 
 val richTextDefaults = RichTextStyle().resolveDefaults()
 
+fun isMarkdown(content: String): Boolean {
+    return content.startsWith("> ") ||
+        content.startsWith("# ") ||
+        content.contains("##") ||
+        content.contains("__") ||
+        content.contains("```")
+}
+
 @Composable
 fun RichTextViewer(
     content: String,
@@ -85,126 +93,118 @@ fun RichTextViewer(
     accountViewModel: AccountViewModel,
     navController: NavController
 ) {
+    val isMarkdown = remember { isMarkdown(content) }
+
     Column(modifier = modifier) {
-        if (content.startsWith("# ") ||
-            content.contains("##") ||
-            content.contains("**") ||
-            content.contains("__") ||
-            content.contains("```")
-        ) {
-            val myMarkDownStyle = richTextDefaults.copy(
-                codeBlockStyle = richTextDefaults.codeBlockStyle?.copy(
-                    textStyle = TextStyle(
-                        fontFamily = FontFamily.Monospace,
-                        fontSize = 14.sp
-                    ),
-                    modifier = Modifier
-                        .padding(0.dp)
-                        .fillMaxWidth()
-                        .clip(shape = RoundedCornerShape(15.dp))
-                        .border(
-                            1.dp,
-                            MaterialTheme.colors.onSurface.copy(alpha = 0.12f),
-                            RoundedCornerShape(15.dp)
-                        )
-                        .background(
-                            MaterialTheme.colors.onSurface
-                                .copy(alpha = 0.05f)
-                                .compositeOver(backgroundColor)
-                        )
-                ),
-                stringStyle = richTextDefaults.stringStyle?.copy(
-                    linkStyle = SpanStyle(
-                        textDecoration = TextDecoration.Underline,
-                        color = MaterialTheme.colors.primary
-                    ),
-                    codeStyle = SpanStyle(
-                        fontFamily = FontFamily.Monospace,
-                        fontSize = 14.sp,
-                        background = MaterialTheme.colors.onSurface.copy(alpha = 0.22f).compositeOver(backgroundColor)
-                    )
-                )
-            )
-
-            val markdownWithSpecialContent = returnMarkdownWithSpecialContent(content)
-
-            MaterialRichText(
-                style = myMarkDownStyle
-            ) {
-                Markdown(
-                    content = markdownWithSpecialContent,
-                    markdownParseOptions = MarkdownParseOptions.Default
-                )
-            }
+        if (isMarkdown) {
+            RenderContentAsMarkdown(content, backgroundColor)
         } else {
+            RenderRegular(content, tags, canPreview, backgroundColor, accountViewModel, navController)
+        }
+    }
+}
+
+class RichTextViewerState(
+    val content: String,
+    val urlSet: LinkedHashSet<String>,
+    val imagesForPager: Map<String, ZoomableUrlContent>,
+    val imageList: List<ZoomableUrlContent>
+)
+
+@Composable
+private fun RenderRegular(
+    content: String,
+    tags: List<List<String>>?,
+    canPreview: Boolean,
+    backgroundColor: Color,
+    accountViewModel: AccountViewModel,
+    navController: NavController
+) {
+    var processedState by remember {
+        mutableStateOf<RichTextViewerState?>(null)
+    }
+
+    LaunchedEffect(key1 = content) {
+        withContext(Dispatchers.IO) {
             val urls = UrlDetector(content, UrlDetectorOptions.Default).detect()
             val urlSet = urls.mapTo(LinkedHashSet(urls.size)) { it.originalUrl }
-            val imagesForPager = urlSet.filter { fullUrl ->
+            val imagesForPager = urlSet.mapNotNull { fullUrl ->
                 val removedParamsFromUrl = fullUrl.split("?")[0].lowercase()
-                imageExtensions.any { removedParamsFromUrl.endsWith(it) } || videoExtensions.any { removedParamsFromUrl.endsWith(it) }
-            }
-            val imagesForPagerSet = imagesForPager.toSet()
+                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()
 
-            // FlowRow doesn't work well with paragraphs. So we need to split them
-            content.split('\n').forEach { paragraph ->
-                FlowRow() {
-                    val s = if (isArabic(paragraph)) paragraph.split(' ').reversed() else paragraph.split(' ')
-                    s.forEach { word: String ->
-                        if (canPreview) {
-                            // Explicit URL
-                            if (imagesForPagerSet.contains(word)) {
-                                ZoomableImageView(word, imagesForPager)
-                            } else if (urlSet.contains(word)) {
-                                UrlPreview(word, "$word ")
-                            } else if (word.startsWith("lnbc", true)) {
-                                MayBeInvoicePreview(word)
-                            } else if (word.startsWith("lnurl", true)) {
-                                MayBeWithdrawal(word)
-                            } else if (Patterns.EMAIL_ADDRESS.matcher(word).matches()) {
-                                ClickableEmail(word)
-                            } else if (word.length > 6 && Patterns.PHONE.matcher(word).matches()) {
-                                ClickablePhone(word)
-                            } else if (isBechLink(word)) {
-                                BechLink(
+            processedState = RichTextViewerState(content, urlSet, imagesForPager, imageList)
+        }
+    }
+
+    // FlowRow doesn't work well with paragraphs. So we need to split them
+    processedState?.let { state ->
+        content.split('\n').forEach { paragraph ->
+            FlowRow() {
+                val s = if (isArabic(paragraph)) {
+                    paragraph.trim().split(' ')
+                        .reversed()
+                } else {
+                    paragraph.trim().split(' ')
+                }
+                s.forEach { word: String ->
+                    if (canPreview) {
+                        // Explicit URL
+                        val img = state.imagesForPager[word]
+                        if (img != null) {
+                            ZoomableContentView(img, state.imageList)
+                        } else if (state.urlSet.contains(word)) {
+                            UrlPreview(word, "$word ")
+                        } else if (word.startsWith("lnbc", true)) {
+                            MayBeInvoicePreview(word)
+                        } else if (word.startsWith("lnurl", true)) {
+                            MayBeWithdrawal(word)
+                        } else if (Patterns.EMAIL_ADDRESS.matcher(word).matches()) {
+                            ClickableEmail(word)
+                        } else if (word.length > 6 && Patterns.PHONE.matcher(word).matches()) {
+                            ClickablePhone(word)
+                        } else if (isBechLink(word)) {
+                            BechLink(
+                                word,
+                                canPreview,
+                                backgroundColor,
+                                accountViewModel,
+                                navController
+                            )
+                        } else if (word.startsWith("#")) {
+                            if (tagIndex.matcher(word).matches() && tags != null) {
+                                TagLink(
                                     word,
+                                    tags,
                                     canPreview,
                                     backgroundColor,
                                     accountViewModel,
                                     navController
                                 )
-                            } else if (word.startsWith("#")) {
-                                if (tagIndex.matcher(word).matches() && tags != null) {
-                                    TagLink(
-                                        word,
-                                        tags,
-                                        canPreview,
-                                        backgroundColor,
-                                        accountViewModel,
-                                        navController
-                                    )
-                                } else if (hashTagsPattern.matcher(word).matches()) {
-                                    HashTag(word, navController)
-                                } else {
-                                    Text(
-                                        text = "$word ",
-                                        style = LocalTextStyle.current.copy(textDirection = TextDirection.Content)
-                                    )
-                                }
-                            } else if (noProtocolUrlValidator.matcher(word).matches()) {
-                                val matcher = noProtocolUrlValidator.matcher(word)
-                                matcher.find()
-                                val url = matcher.group(1) // url
-                                val additionalChars = matcher.group(4) ?: "" // additional chars
+                            } else if (hashTagsPattern.matcher(word).matches()) {
+                                HashTag(word, navController)
+                            } else {
+                                Text(
+                                    text = "$word ",
+                                    style = LocalTextStyle.current.copy(textDirection = TextDirection.Content)
+                                )
+                            }
+                        } else if (noProtocolUrlValidator.matcher(word).matches()) {
+                            val matcher = noProtocolUrlValidator.matcher(word)
+                            matcher.find()
+                            val url = matcher.group(1) // url
+                            val additionalChars = matcher.group(4) ?: "" // additional chars
 
-                                if (url != null) {
-                                    ClickableUrl(url, "https://$url")
-                                    Text("$additionalChars ")
-                                } else {
-                                    Text(
-                                        text = "$word ",
-                                        style = LocalTextStyle.current.copy(textDirection = TextDirection.Content)
-                                    )
-                                }
+                            if (url != null) {
+                                ClickableUrl(url, "https://$url")
+                                Text("$additionalChars ")
                             } else {
                                 Text(
                                     text = "$word ",
@@ -212,69 +212,74 @@ fun RichTextViewer(
                                 )
                             }
                         } else {
-                            if (urlSet.contains(word)) {
-                                ClickableUrl("$word ", word)
-                            } else if (word.startsWith("lnurl", true)) {
-                                val lnWithdrawal = LnWithdrawalUtil.findWithdrawal(word)
-                                if (lnWithdrawal != null) {
-                                    ClickableWithdrawal(withdrawalString = lnWithdrawal)
-                                } else {
-                                    Text(
-                                        text = "$word ",
-                                        style = LocalTextStyle.current.copy(textDirection = TextDirection.Content)
-                                    )
-                                }
-                            } else if (Patterns.EMAIL_ADDRESS.matcher(word).matches()) {
-                                ClickableEmail(word)
-                            } else if (Patterns.PHONE.matcher(word).matches() && word.length > 6) {
-                                ClickablePhone(word)
-                            } else if (isBechLink(word)) {
-                                BechLink(
-                                    word,
-                                    canPreview,
-                                    backgroundColor,
-                                    accountViewModel,
-                                    navController
-                                )
-                            } else if (word.startsWith("#")) {
-                                if (tagIndex.matcher(word).matches() && tags != null) {
-                                    TagLink(
-                                        word,
-                                        tags,
-                                        canPreview,
-                                        backgroundColor,
-                                        accountViewModel,
-                                        navController
-                                    )
-                                } else if (hashTagsPattern.matcher(word).matches()) {
-                                    HashTag(word, navController)
-                                } else {
-                                    Text(
-                                        text = "$word ",
-                                        style = LocalTextStyle.current.copy(textDirection = TextDirection.Content)
-                                    )
-                                }
-                            } else if (noProtocolUrlValidator.matcher(word).matches()) {
-                                val matcher = noProtocolUrlValidator.matcher(word)
-                                matcher.find()
-                                val url = matcher.group(1) // url
-                                val additionalChars = matcher.group(4) ?: "" // additional chars
-
-                                if (url != null) {
-                                    ClickableUrl(url, "https://$url")
-                                    Text("$additionalChars ")
-                                } else {
-                                    Text(
-                                        text = "$word ",
-                                        style = LocalTextStyle.current.copy(textDirection = TextDirection.Content)
-                                    )
-                                }
+                            Text(
+                                text = "$word ",
+                                style = LocalTextStyle.current.copy(textDirection = TextDirection.Content)
+                            )
+                        }
+                    } else {
+                        if (state.urlSet.contains(word)) {
+                            ClickableUrl("$word ", word)
+                        } else if (word.startsWith("lnurl", true)) {
+                            val lnWithdrawal = LnWithdrawalUtil.findWithdrawal(word)
+                            if (lnWithdrawal != null) {
+                                ClickableWithdrawal(withdrawalString = lnWithdrawal)
                             } else {
                                 Text(
                                     text = "$word ",
                                     style = LocalTextStyle.current.copy(textDirection = TextDirection.Content)
                                 )
                             }
+                        } else if (Patterns.EMAIL_ADDRESS.matcher(word).matches()) {
+                            ClickableEmail(word)
+                        } else if (Patterns.PHONE.matcher(word).matches() && word.length > 6) {
+                            ClickablePhone(word)
+                        } else if (isBechLink(word)) {
+                            BechLink(
+                                word,
+                                canPreview,
+                                backgroundColor,
+                                accountViewModel,
+                                navController
+                            )
+                        } else if (word.startsWith("#")) {
+                            if (tagIndex.matcher(word).matches() && tags != null) {
+                                TagLink(
+                                    word,
+                                    tags,
+                                    canPreview,
+                                    backgroundColor,
+                                    accountViewModel,
+                                    navController
+                                )
+                            } else if (hashTagsPattern.matcher(word).matches()) {
+                                HashTag(word, navController)
+                            } else {
+                                Text(
+                                    text = "$word ",
+                                    style = LocalTextStyle.current.copy(textDirection = TextDirection.Content)
+                                )
+                            }
+                        } else if (noProtocolUrlValidator.matcher(word).matches()) {
+                            val matcher = noProtocolUrlValidator.matcher(word)
+                            matcher.find()
+                            val url = matcher.group(1) // url
+                            val additionalChars = matcher.group(4) ?: "" // additional chars
+
+                            if (url != null) {
+                                ClickableUrl(url, "https://$url")
+                                Text("$additionalChars ")
+                            } else {
+                                Text(
+                                    text = "$word ",
+                                    style = LocalTextStyle.current.copy(textDirection = TextDirection.Content)
+                                )
+                            }
+                        } else {
+                            Text(
+                                text = "$word ",
+                                style = LocalTextStyle.current.copy(textDirection = TextDirection.Content)
+                            )
                         }
                     }
                 }
@@ -284,21 +289,137 @@ fun RichTextViewer(
 }
 
 @Composable
-private fun getDisplayNameFromUserNip19(parsedNip19: Nip19.Return): String? {
-    if (parsedNip19.type == Nip19.Type.USER) {
-        val userHex = parsedNip19.hex
-        val userBase = LocalCache.getOrCreateUser(userHex)
+private fun RenderContentAsMarkdown(content: String, backgroundColor: Color) {
+    val myMarkDownStyle = richTextDefaults.copy(
+        codeBlockStyle = richTextDefaults.codeBlockStyle?.copy(
+            textStyle = TextStyle(
+                fontFamily = FontFamily.Monospace,
+                fontSize = 14.sp
+            ),
+            modifier = Modifier
+                .padding(0.dp)
+                .fillMaxWidth()
+                .clip(shape = RoundedCornerShape(15.dp))
+                .border(
+                    1.dp,
+                    MaterialTheme.colors.onSurface.copy(alpha = 0.12f),
+                    RoundedCornerShape(15.dp)
+                )
+                .background(
+                    MaterialTheme.colors.onSurface
+                        .copy(alpha = 0.05f)
+                        .compositeOver(backgroundColor)
+                )
+        ),
+        stringStyle = richTextDefaults.stringStyle?.copy(
+            linkStyle = SpanStyle(
+                textDecoration = TextDecoration.Underline,
+                color = MaterialTheme.colors.primary
+            ),
+            codeStyle = SpanStyle(
+                fontFamily = FontFamily.Monospace,
+                fontSize = 14.sp,
+                background = MaterialTheme.colors.onSurface.copy(alpha = 0.22f)
+                    .compositeOver(backgroundColor)
+            )
+        )
+    )
 
-        val userState by userBase.live().metadata.observeAsState()
-        val displayName = userState?.user?.bestDisplayName()
-        if (displayName !== null) {
-            return displayName
+    var markdownWithSpecialContent by remember { mutableStateOf<String?>(null) }
+    var nip19References by remember { mutableStateOf<List<Nip19.Return>>(emptyList()) }
+    var refresh by remember { mutableStateOf(0) }
+
+    LaunchedEffect(key1 = content) {
+        withContext(Dispatchers.IO) {
+            nip19References = returnNIP19References(content)
+            markdownWithSpecialContent = returnMarkdownWithSpecialContent(content)
+        }
+    }
+
+    LaunchedEffect(key1 = refresh) {
+        withContext(Dispatchers.IO) {
+            val newMarkdownWithSpecialContent = returnMarkdownWithSpecialContent(content)
+            if (markdownWithSpecialContent != newMarkdownWithSpecialContent) {
+                markdownWithSpecialContent = newMarkdownWithSpecialContent
+            }
+        }
+    }
+
+    nip19References.forEach {
+        var baseUser by remember { mutableStateOf<User?>(null) }
+        var baseNote by remember { mutableStateOf<Note?>(null) }
+
+        LaunchedEffect(key1 = it.hex) {
+            withContext(Dispatchers.IO) {
+                if (it.type == Nip19.Type.NOTE || it.type == Nip19.Type.EVENT || it.type == Nip19.Type.ADDRESS) {
+                    LocalCache.checkGetOrCreateNote(it.hex)?.let { note ->
+                        baseNote = note
+                    }
+                }
+
+                if (it.type == Nip19.Type.USER) {
+                    LocalCache.checkGetOrCreateUser(it.hex)?.let { user ->
+                        baseUser = user
+                    }
+                }
+            }
+        }
+
+        baseNote?.let {
+            val noteState by it.live().metadata.observeAsState()
+            if (noteState?.note?.event != null) {
+                refresh++
+            }
+        }
+        baseUser?.let {
+            val userState by it.live().metadata.observeAsState()
+            if (userState?.user?.info != null) {
+                refresh++
+            }
+        }
+    }
+
+    markdownWithSpecialContent?.let {
+        MaterialRichText(
+            style = myMarkDownStyle
+        ) {
+            Markdown(
+                content = it,
+                markdownParseOptions = MarkdownParseOptions.Default
+            )
         }
     }
-    return null
 }
 
-@Composable
+private fun getDisplayNameFromNip19(nip19: Nip19.Return): String? {
+    if (nip19.type == Nip19.Type.USER) {
+        return LocalCache.users[nip19.hex]?.bestDisplayName()
+    } else if (nip19.type == Nip19.Type.NOTE) {
+        return LocalCache.notes[nip19.hex]?.idDisplayNote()
+    } else if (nip19.type == Nip19.Type.ADDRESS) {
+        return LocalCache.addressables[nip19.hex]?.idDisplayNote()
+    } else if (nip19.type == Nip19.Type.EVENT) {
+        return LocalCache.notes[nip19.hex]?.idDisplayNote() ?: LocalCache.addressables[nip19.hex]?.idDisplayNote()
+    } else {
+        return null
+    }
+}
+
+private fun returnNIP19References(content: String): List<Nip19.Return> {
+    val listOfReferences = mutableListOf<Nip19.Return>()
+    content.split('\n').forEach { paragraph ->
+        paragraph.split(' ').forEach { word: String ->
+            if (isBechLink(word)) {
+                val parsedNip19 = Nip19.uriToRoute(word)
+                parsedNip19?.let {
+                    listOfReferences.add(it)
+                }
+            }
+        }
+    }
+    return listOfReferences
+}
+
 private fun returnMarkdownWithSpecialContent(content: String): String {
     var returnContent = ""
     content.split('\n').forEach { paragraph ->
@@ -312,7 +433,7 @@ private fun returnMarkdownWithSpecialContent(content: String): String {
             } else if (isBechLink(word)) {
                 val parsedNip19 = Nip19.uriToRoute(word)
                 returnContent += if (parsedNip19 !== null) {
-                    val displayName = getDisplayNameFromUserNip19(parsedNip19)
+                    val displayName = getDisplayNameFromNip19(parsedNip19)
                     if (displayName != null) {
                         "[@$displayName](nostr://$word) "
                     } else {
@@ -352,9 +473,9 @@ fun BechLink(word: String, canPreview: Boolean, backgroundColor: Color, accountV
                     LocalCache.checkGetOrCreateNote(it.hex)?.let { note ->
                         baseNotePair = Pair(note, it.additionalChars)
                     }
-                } else {
-                    nip19Route = it
                 }
+
+                nip19Route = it
             }
         }
     }
@@ -373,14 +494,15 @@ fun BechLink(word: String, canPreview: Boolean, backgroundColor: Color, accountV
                         MaterialTheme.colors.onSurface.copy(alpha = 0.12f),
                         RoundedCornerShape(15.dp)
                     ),
-                parentBackgroundColor = MaterialTheme.colors.onSurface.copy(alpha = 0.05f)
-                    .compositeOver(backgroundColor),
+                parentBackgroundColor = backgroundColor,
                 isQuotedNote = true,
                 navController = navController
             )
-            Text(
-                "${it.second} "
-            )
+            if (!it.second.isNullOrEmpty()) {
+                Text(
+                    "${it.second} "
+                )
+            }
         } ?: nip19Route?.let {
             ClickableRoute(it, navController)
         } ?: Text(text = "$word ")
@@ -521,8 +643,7 @@ fun TagLink(word: String, tags: List<List<String>>, canPreview: Boolean, backgro
                         MaterialTheme.colors.onSurface.copy(alpha = 0.12f),
                         RoundedCornerShape(15.dp)
                     ),
-                parentBackgroundColor = MaterialTheme.colors.onSurface.copy(alpha = 0.05f)
-                    .compositeOver(backgroundColor),
+                parentBackgroundColor = backgroundColor,
                 isQuotedNote = true,
                 navController = navController
             )

app/src/main/java/com/vitorpamplona/amethyst/ui/components/Robohash.kt

@@ -92,7 +92,6 @@ object Robohash {
             .data("robohash:$message")
             .fetcherFactory(HashImageFetcher.Factory)
             .size(robotSize)
-            .crossfade(100)
             .build()
     }
 }

app/src/main/java/com/vitorpamplona/amethyst/ui/components/TextSpinner.kt

@@ -5,8 +5,11 @@ import androidx.compose.foundation.clickable
 import androidx.compose.foundation.interaction.MutableInteractionSource
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
 import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.lazy.LazyColumn
 import androidx.compose.foundation.lazy.itemsIndexed
@@ -26,10 +29,18 @@ import androidx.compose.ui.focus.FocusRequester
 import androidx.compose.ui.focus.focusRequester
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
 import androidx.compose.ui.window.Dialog
 
 @Composable
-fun TextSpinner(label: String, placeholder: String, options: List<String>, onSelect: (Int) -> Unit, modifier: Modifier = Modifier) {
+fun TextSpinner(
+    label: String,
+    placeholder: String,
+    options: List<String>,
+    explainers: List<String>? = null,
+    onSelect: (Int) -> Unit,
+    modifier: Modifier = Modifier
+) {
     val focusRequester = remember { FocusRequester() }
     val interactionSource = remember { MutableInteractionSource() }
     var optionsShowing by remember { mutableStateOf(false) }
@@ -62,7 +73,7 @@ fun TextSpinner(label: String, placeholder: String, options: List<String>, onSel
 
     if (optionsShowing) {
         options.isNotEmpty().also {
-            SpinnerSelectionDialog(options = options, onDismiss = { optionsShowing = false }) {
+            SpinnerSelectionDialog(options = options, explainers = explainers, onDismiss = { optionsShowing = false }) {
                 currentText = options[it]
                 optionsShowing = false
                 onSelect(it)
@@ -72,7 +83,7 @@ fun TextSpinner(label: String, placeholder: String, options: List<String>, onSel
 }
 
 @Composable
-fun SpinnerSelectionDialog(options: List<String>, onDismiss: () -> Unit, onSelect: (Int) -> Unit) {
+fun SpinnerSelectionDialog(options: List<String>, explainers: List<String>?, onDismiss: () -> Unit, onSelect: (Int) -> Unit) {
     Dialog(onDismissRequest = onDismiss) {
         Surface(
             border = BorderStroke(0.25.dp, Color.LightGray),
@@ -81,7 +92,6 @@ fun SpinnerSelectionDialog(options: List<String>, onDismiss: () -> Unit, onSelec
             LazyColumn() {
                 itemsIndexed(options) { index, item ->
                     Row(
-                        horizontalArrangement = Arrangement.Center,
                         modifier = Modifier
                             .fillMaxWidth()
                             .padding(16.dp, 16.dp)
@@ -89,7 +99,25 @@ fun SpinnerSelectionDialog(options: List<String>, onDismiss: () -> Unit, onSelec
                                 onSelect(index)
                             }
                     ) {
-                        Text(text = item, color = MaterialTheme.colors.onSurface)
+                        Column() {
+                            Row(
+                                horizontalArrangement = Arrangement.Center,
+                                modifier = Modifier
+                                    .fillMaxWidth()
+                            ) {
+                                Text(text = item, color = MaterialTheme.colors.onSurface)
+                            }
+                            explainers?.getOrNull(index)?.let {
+                                Spacer(modifier = Modifier.height(5.dp))
+                                Row(
+                                    horizontalArrangement = Arrangement.Start,
+                                    modifier = Modifier
+                                        .fillMaxWidth()
+                                ) {
+                                    Text(text = it, color = Color.Gray, fontSize = 14.sp)
+                                }
+                            }
+                        }
                     }
                     if (index < options.lastIndex) {
                         Divider(color = Color.LightGray, thickness = 0.25.dp)

app/src/main/java/com/vitorpamplona/amethyst/ui/components/UrlPreview.kt

@@ -7,6 +7,7 @@ import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
+import androidx.compose.runtime.rememberCoroutineScope
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.platform.LocalContext
 import com.baha.url.preview.IUrlPreviewCallback
@@ -14,7 +15,7 @@ import com.baha.url.preview.UrlInfoItem
 import com.vitorpamplona.amethyst.R
 import com.vitorpamplona.amethyst.model.UrlCachedPreviewer
 import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.withContext
+import kotlinx.coroutines.launch
 
 @Composable
 fun UrlPreview(url: String, urlText: String) {
@@ -28,11 +29,12 @@ fun UrlPreview(url: String, urlText: String) {
     val context = LocalContext.current
 
     var urlPreviewState by remember { mutableStateOf<UrlPreviewState>(default) }
+    val scope = rememberCoroutineScope()
 
     // Doesn't use a viewModel because of viewModel reusing issues (too many UrlPreview are created).
     LaunchedEffect(url) {
         if (urlPreviewState == UrlPreviewState.Loading) {
-            withContext(Dispatchers.IO) {
+            scope.launch(Dispatchers.IO) {
                 UrlCachedPreviewer.previewInfo(
                     url,
                     object : IUrlPreviewCallback {

app/src/main/java/com/vitorpamplona/amethyst/ui/components/VideoView.kt

@@ -1,63 +1,152 @@
 package com.vitorpamplona.amethyst.ui.components
 
+import android.net.Uri
+import android.view.View
 import android.view.ViewGroup
 import android.widget.FrameLayout
+import androidx.compose.foundation.background
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.BoxWithConstraints
+import androidx.compose.foundation.layout.defaultMinSize
+import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.shape.CircleShape
+import androidx.compose.material.Icon
+import androidx.compose.material.IconButton
+import androidx.compose.material.MaterialTheme
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.VolumeOff
+import androidx.compose.material.icons.filled.VolumeUp
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.DisposableEffect
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.MutableState
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.rememberUpdatedState
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.composed
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.layout.LayoutCoordinates
+import androidx.compose.ui.layout.boundsInWindow
+import androidx.compose.ui.layout.onGloballyPositioned
 import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.platform.LocalLifecycleOwner
+import androidx.compose.ui.platform.LocalView
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.isFinite
 import androidx.compose.ui.viewinterop.AndroidView
+import androidx.core.net.toUri
 import androidx.lifecycle.Lifecycle
 import androidx.lifecycle.LifecycleEventObserver
 import com.google.android.exoplayer2.C
 import com.google.android.exoplayer2.ExoPlayer
 import com.google.android.exoplayer2.MediaItem
+import com.google.android.exoplayer2.MediaMetadata
 import com.google.android.exoplayer2.Player
 import com.google.android.exoplayer2.source.ProgressiveMediaSource
 import com.google.android.exoplayer2.ui.AspectRatioFrameLayout
 import com.google.android.exoplayer2.ui.StyledPlayerView
 import com.vitorpamplona.amethyst.VideoCache
+import java.io.File
+
+public var muted = mutableStateOf(true)
 
 @Composable
-fun VideoView(videoUri: String, onDialog: ((Boolean) -> Unit)? = null) {
+fun VideoView(localFile: File?, description: String? = null, onDialog: ((Boolean) -> Unit)? = null) {
+    if (localFile != null) {
+        VideoView(localFile.toUri(), description, onDialog)
+    }
+}
+
+@Composable
+fun VideoView(videoUri: String, description: String? = null, onDialog: ((Boolean) -> Unit)? = null) {
+    VideoView(Uri.parse(videoUri), description, onDialog)
+}
+
+@Composable
+fun VideoView(videoUri: Uri, description: String? = null, onDialog: ((Boolean) -> Unit)? = null) {
     val context = LocalContext.current
     val lifecycleOwner = rememberUpdatedState(LocalLifecycleOwner.current)
 
     val exoPlayer = remember(videoUri) {
+        val mediaBuilder = MediaItem.Builder().setUri(videoUri)
+
+        description?.let {
+            mediaBuilder.setMediaMetadata(
+                MediaMetadata.Builder().setDisplayTitle(it).build()
+            )
+        }
+
+        val media = mediaBuilder.build()
+
         ExoPlayer.Builder(context).build().apply {
             repeatMode = Player.REPEAT_MODE_ALL
             videoScalingMode = C.VIDEO_SCALING_MODE_SCALE_TO_FIT_WITH_CROPPING
-            setMediaSource(
-                ProgressiveMediaSource.Factory(VideoCache.get()).createMediaSource(MediaItem.fromUri(videoUri))
-            )
+            volume = 0f
+            if (videoUri.scheme?.startsWith("file") == true) {
+                setMediaItem(media)
+            } else {
+                setMediaSource(
+                    ProgressiveMediaSource.Factory(VideoCache.get()).createMediaSource(
+                        media
+                    )
+                )
+            }
             prepare()
         }
     }
 
+    LaunchedEffect(key1 = muted.value) {
+        exoPlayer.volume = if (muted.value) 0f else 1f
+    }
+
     DisposableEffect(
-        AndroidView(
-            modifier = Modifier.fillMaxWidth(),
-            factory = {
-                StyledPlayerView(context).apply {
-                    player = exoPlayer
-                    layoutParams = FrameLayout.LayoutParams(
-                        ViewGroup.LayoutParams.MATCH_PARENT,
-                        ViewGroup.LayoutParams.WRAP_CONTENT
-                    )
-                    resizeMode = AspectRatioFrameLayout.RESIZE_MODE_FIXED_WIDTH
-                    onDialog?.let { innerOnDialog ->
-                        setFullscreenButtonClickListener {
+        BoxWithConstraints() {
+            AndroidView(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .defaultMinSize(minHeight = 70.dp)
+                    .align(Alignment.Center)
+                    .onVisibilityChanges { visible ->
+                        if (visible) {
+                            exoPlayer.play()
+                        } else {
                             exoPlayer.pause()
-                            innerOnDialog(it)
+                        }
+                    },
+                factory = {
+                    StyledPlayerView(context).apply {
+                        player = exoPlayer
+                        layoutParams = FrameLayout.LayoutParams(
+                            ViewGroup.LayoutParams.MATCH_PARENT,
+                            ViewGroup.LayoutParams.WRAP_CONTENT
+                        )
+                        controllerAutoShow = false
+                        hideController()
+                        resizeMode = if (maxHeight.isFinite) AspectRatioFrameLayout.RESIZE_MODE_FIT else AspectRatioFrameLayout.RESIZE_MODE_FIXED_WIDTH
+                        onDialog?.let { innerOnDialog ->
+                            setFullscreenButtonClickListener {
+                                exoPlayer.pause()
+                                innerOnDialog(it)
+                            }
                         }
                     }
                 }
+            )
+
+            MuteButton(muted, Modifier) {
+                muted.value = !muted.value
             }
-        )
+        }
+
     ) {
         val observer = LifecycleEventObserver { _, event ->
             when (event) {
@@ -76,3 +165,76 @@ fun VideoView(videoUri: String, onDialog: ((Boolean) -> Unit)? = null) {
         }
     }
 }
+
+fun Modifier.onVisibilityChanges(onVisibilityChanges: (Boolean) -> Unit): Modifier = composed {
+    val view = LocalView.current
+    var isVisible: Boolean? by remember { mutableStateOf(null) }
+
+    LaunchedEffect(isVisible) {
+        onVisibilityChanges(isVisible == true)
+    }
+
+    onGloballyPositioned { coordinates ->
+        isVisible = coordinates.isCompletelyVisible(view)
+    }
+}
+
+fun LayoutCoordinates.isCompletelyVisible(view: View): Boolean {
+    if (!isAttached) return false
+    // Window relative bounds of our compose root view that are visible on the screen
+    val globalRootRect = android.graphics.Rect()
+    if (!view.getGlobalVisibleRect(globalRootRect)) {
+        // we aren't visible at all.
+        return false
+    }
+    val bounds = boundsInWindow()
+    // Make sure we are completely in bounds.
+    return bounds.top >= globalRootRect.top &&
+        bounds.left >= globalRootRect.left &&
+        bounds.right <= globalRootRect.right &&
+        bounds.bottom <= globalRootRect.bottom
+}
+
+@Composable
+private fun MuteButton(muted: MutableState<Boolean>, modifier: Modifier, toggle: () -> Unit) {
+    Box(
+        modifier
+            .width(70.dp)
+            .height(70.dp)
+            .padding(10.dp)
+    ) {
+        Box(
+            Modifier
+                .clip(CircleShape)
+                .fillMaxSize(0.6f)
+                .align(Alignment.Center)
+                .background(MaterialTheme.colors.background)
+        )
+
+        if (muted.value) {
+            IconButton(
+                onClick = toggle,
+                modifier = Modifier.size(50.dp)
+            ) {
+                Icon(
+                    imageVector = Icons.Default.VolumeOff,
+                    "Hash Verified",
+                    tint = MaterialTheme.colors.onBackground,
+                    modifier = Modifier.size(30.dp)
+                )
+            }
+        } else {
+            IconButton(
+                onClick = toggle,
+                modifier = Modifier.size(50.dp)
+            ) {
+                Icon(
+                    imageVector = Icons.Default.VolumeUp,
+                    "Hash Verified",
+                    tint = MaterialTheme.colors.onBackground,
+                    modifier = Modifier.size(30.dp)
+                )
+            }
+        }
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/ui/components/ZoomableContentView.kt

@@ -0,0 +1,567 @@
+package com.vitorpamplona.amethyst.ui.components
+
+import android.content.Context
+import android.util.Log
+import android.widget.Toast
+import androidx.compose.foundation.ExperimentalFoundationApi
+import androidx.compose.foundation.background
+import androidx.compose.foundation.border
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.combinedClickable
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.BoxWithConstraints
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.aspectRatio
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.pager.PagerState
+import androidx.compose.foundation.shape.CircleShape
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.foundation.text.InlineTextContent
+import androidx.compose.foundation.text.appendInlineContent
+import androidx.compose.material.Icon
+import androidx.compose.material.IconButton
+import androidx.compose.material.LocalTextStyle
+import androidx.compose.material.MaterialTheme
+import androidx.compose.material.Surface
+import androidx.compose.material.Text
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.Report
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.compositeOver
+import androidx.compose.ui.layout.ContentScale
+import androidx.compose.ui.platform.LocalClipboardManager
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.res.painterResource
+import androidx.compose.ui.text.AnnotatedString
+import androidx.compose.ui.text.Placeholder
+import androidx.compose.ui.text.PlaceholderVerticalAlign
+import androidx.compose.ui.text.buildAnnotatedString
+import androidx.compose.ui.text.withStyle
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.isFinite
+import androidx.compose.ui.unit.sp
+import androidx.compose.ui.window.Dialog
+import androidx.compose.ui.window.DialogProperties
+import coil.annotation.ExperimentalCoilApi
+import coil.compose.AsyncImage
+import coil.compose.AsyncImagePainter
+import coil.imageLoader
+import com.google.accompanist.flowlayout.FlowRow
+import com.vitorpamplona.amethyst.R
+import com.vitorpamplona.amethyst.model.toHexKey
+import com.vitorpamplona.amethyst.service.BlurHashRequester
+import com.vitorpamplona.amethyst.ui.actions.CloseButton
+import com.vitorpamplona.amethyst.ui.actions.LoadingAnimation
+import com.vitorpamplona.amethyst.ui.actions.SaveToGallery
+import com.vitorpamplona.amethyst.ui.note.BlankNote
+import com.vitorpamplona.amethyst.ui.theme.Nip05
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.launch
+import net.engawapg.lib.zoomable.rememberZoomState
+import net.engawapg.lib.zoomable.zoomable
+import java.io.File
+import java.security.MessageDigest
+
+abstract class ZoomableContent(
+    val description: String? = null,
+    val dim: String? = null
+)
+
+abstract class ZoomableUrlContent(
+    val url: String,
+    description: String? = null,
+    val hash: String? = null,
+    dim: String? = null,
+    val uri: String? = null
+) : ZoomableContent(description, dim)
+
+class ZoomableUrlImage(
+    url: String,
+    description: String? = null,
+    hash: String? = null,
+    val blurhash: String? = null,
+    dim: String? = null,
+    uri: String? = null
+) : ZoomableUrlContent(url, description, hash, dim, uri)
+
+class ZoomableUrlVideo(
+    url: String,
+    description: String? = null,
+    hash: String? = null,
+    dim: String? = null,
+    uri: String? = null
+) : ZoomableUrlContent(url, description, hash, dim, uri)
+
+abstract class ZoomablePreloadedContent(
+    val localFile: File?,
+    description: String? = null,
+    val mimeType: String? = null,
+    val isVerified: Boolean? = null,
+    dim: String? = null,
+    val uri: String
+) : ZoomableContent(description, dim)
+
+class ZoomableLocalImage(
+    localFile: File?,
+    mimeType: String? = null,
+    description: String? = null,
+    val blurhash: String? = null,
+    dim: String? = null,
+    isVerified: Boolean? = null,
+    uri: String
+) : ZoomablePreloadedContent(localFile, description, mimeType, isVerified, dim, uri)
+
+class ZoomableLocalVideo(
+    localFile: File?,
+    mimeType: String? = null,
+    description: String? = null,
+    dim: String? = null,
+    isVerified: Boolean? = null,
+    uri: String
+) : ZoomablePreloadedContent(localFile, description, mimeType, isVerified, dim, uri)
+
+fun figureOutMimeType(fullUrl: String): ZoomableContent {
+    val removedParamsFromUrl = fullUrl.split("?")[0].lowercase()
+    val isImage = imageExtensions.any { removedParamsFromUrl.endsWith(it) }
+    val isVideo = videoExtensions.any { removedParamsFromUrl.endsWith(it) }
+
+    return if (isImage) {
+        ZoomableUrlImage(fullUrl)
+    } else if (isVideo) {
+        ZoomableUrlVideo(fullUrl)
+    } else {
+        ZoomableUrlImage(fullUrl)
+    }
+}
+
+@Composable
+@OptIn(ExperimentalFoundationApi::class)
+fun ZoomableContentView(content: ZoomableContent, images: List<ZoomableContent> = listOf(content)) {
+    val clipboardManager = LocalClipboardManager.current
+
+    // store the dialog open or close state
+    var dialogOpen by remember {
+        mutableStateOf(false)
+    }
+
+    var mainImageModifier = Modifier
+        .fillMaxWidth()
+        .clip(shape = RoundedCornerShape(15.dp))
+        .border(
+            1.dp,
+            MaterialTheme.colors.onSurface.copy(alpha = 0.12f),
+            RoundedCornerShape(15.dp)
+        )
+
+    if (content is ZoomableUrlContent) {
+        mainImageModifier = mainImageModifier.combinedClickable(
+            onClick = { dialogOpen = true },
+            onLongClick = { clipboardManager.setText(AnnotatedString(content.uri ?: content.url)) }
+        )
+    } else if (content is ZoomablePreloadedContent) {
+        mainImageModifier = mainImageModifier.combinedClickable(
+            onClick = { dialogOpen = true },
+            onLongClick = { clipboardManager.setText(AnnotatedString(content.uri)) }
+        )
+    } else {
+        mainImageModifier = mainImageModifier.clickable {
+            dialogOpen = true
+        }
+    }
+
+    when (content) {
+        is ZoomableUrlImage -> UrlImageView(content, mainImageModifier)
+        is ZoomableUrlVideo -> VideoView(content.url, content.description) { dialogOpen = true }
+        is ZoomableLocalImage -> LocalImageView(content, mainImageModifier)
+        is ZoomableLocalVideo -> VideoView(content.localFile, content.description) { dialogOpen = true }
+    }
+
+    if (dialogOpen) {
+        ZoomableImageDialog(content, images, onDismiss = { dialogOpen = false })
+    }
+}
+
+@Composable
+private fun LocalImageView(
+    content: ZoomableLocalImage,
+    mainImageModifier: Modifier
+) {
+    // store the dialog open or close state
+    var imageState by remember {
+        mutableStateOf<AsyncImagePainter.State?>(null)
+    }
+
+    val ratio = remember {
+        aspectRatio(content.dim)
+    }
+
+    BoxWithConstraints(contentAlignment = Alignment.Center) {
+        val myModifier = mainImageModifier.also {
+            if (ratio != null) {
+                it.aspectRatio(ratio, maxHeight.isFinite)
+            }
+        }
+        val contentScale = if (maxHeight.isFinite) ContentScale.Fit else ContentScale.FillWidth
+
+        if (content.localFile != null && content.localFile.exists()) {
+            AsyncImage(
+                model = content.localFile,
+                contentDescription = content.description,
+                contentScale = contentScale,
+                modifier = myModifier,
+                onLoading = {
+                    imageState = it
+                },
+                onSuccess = {
+                    imageState = it
+                }
+            )
+        }
+
+        if (imageState is AsyncImagePainter.State.Success) {
+            HashVerificationSymbol(content.isVerified, Modifier.align(Alignment.TopEnd))
+        } else {
+            if (content.blurhash != null) {
+                DisplayBlurHash(content.blurhash, content.description, contentScale, myModifier)
+            } else {
+                FlowRow() {
+                    DisplayUrlWithLoadingSymbol(content)
+                }
+            }
+        }
+
+        if (imageState is AsyncImagePainter.State.Error || content.localFile == null || !content.localFile.exists()) {
+            BlankNote()
+        }
+    }
+}
+
+@Composable
+private fun UrlImageView(
+    content: ZoomableUrlImage,
+    mainImageModifier: Modifier
+) {
+    val scope = rememberCoroutineScope()
+    val context = LocalContext.current
+
+    // store the dialog open or close state
+    var imageState by remember {
+        mutableStateOf<AsyncImagePainter.State?>(null)
+    }
+
+    var verifiedHash by remember {
+        mutableStateOf<Boolean?>(null)
+    }
+
+    val ratio = remember {
+        aspectRatio(content.dim)
+    }
+
+    LaunchedEffect(key1 = content.url, key2 = imageState) {
+        if (imageState is AsyncImagePainter.State.Success) {
+            scope.launch(Dispatchers.IO) {
+                verifiedHash = verifyHash(content, context)
+            }
+        }
+    }
+
+    BoxWithConstraints(contentAlignment = Alignment.Center) {
+        val myModifier = mainImageModifier.also {
+            if (ratio != null) {
+                it.aspectRatio(ratio, maxHeight.isFinite)
+            }
+        }
+        val contentScale = if (maxHeight.isFinite) ContentScale.Fit else ContentScale.FillWidth
+
+        AsyncImage(
+            model = content.url,
+            contentDescription = content.description,
+            contentScale = contentScale,
+            modifier = myModifier,
+            onLoading = {
+                imageState = it
+            },
+            onSuccess = {
+                imageState = it
+            }
+        )
+
+        if (imageState is AsyncImagePainter.State.Success) {
+            HashVerificationSymbol(verifiedHash, Modifier.align(Alignment.TopEnd))
+        } else {
+            if (content.blurhash != null) {
+                DisplayBlurHash(content.blurhash, content.description, contentScale, myModifier)
+            } else {
+                FlowRow() {
+                    DisplayUrlWithLoadingSymbol(content)
+                }
+            }
+        }
+
+        if (imageState is AsyncImagePainter.State.Error) {
+            ClickableUrl(urlText = "${content.url} ", url = content.url)
+        }
+    }
+}
+
+private fun aspectRatio(dim: String?): Float? {
+    if (dim == null) return null
+
+    val parts = dim.split("x")
+    if (parts.size != 2) return null
+
+    return try {
+        val width = parts[0].toFloat()
+        val height = parts[1].toFloat()
+        width / height
+    } catch (e: Exception) {
+        null
+    }
+}
+
+@Composable
+private fun DisplayUrlWithLoadingSymbol(content: ZoomableContent) {
+    var cnt by remember { mutableStateOf<ZoomableContent?>(null) }
+    val scope = rememberCoroutineScope()
+
+    LaunchedEffect(Unit) {
+        scope.launch(Dispatchers.IO) {
+            delay(200)
+            cnt = content
+        }
+    }
+
+    cnt?.let { DisplayUrlWithLoadingSymbolWait(it) }
+}
+
+@Composable
+private fun DisplayUrlWithLoadingSymbolWait(content: ZoomableContent) {
+    if (content is ZoomableUrlContent) {
+        ClickableUrl(urlText = "${content.url} ", url = content.url)
+    } else {
+        Text("Loading content... ")
+    }
+
+    val myId = "inlineContent"
+    val emptytext = buildAnnotatedString {
+        withStyle(
+            LocalTextStyle.current.copy(color = MaterialTheme.colors.primary).toSpanStyle()
+        ) {
+            append("")
+            appendInlineContent(myId, "[icon]")
+        }
+    }
+    val inlineContent = mapOf(
+        Pair(
+            myId,
+            InlineTextContent(
+                Placeholder(
+                    width = 17.sp,
+                    height = 17.sp,
+                    placeholderVerticalAlign = PlaceholderVerticalAlign.Center
+                )
+            ) {
+                LoadingAnimation()
+            }
+        )
+    )
+
+    // Empty Text for Size of Icon
+    Text(
+        text = emptytext,
+        inlineContent = inlineContent
+    )
+}
+
+@Composable
+private fun DisplayBlurHash(
+    blurhash: String?,
+    description: String?,
+    contentScale: ContentScale,
+    modifier: Modifier
+) {
+    if (blurhash == null) return
+
+    val context = LocalContext.current
+    AsyncImage(
+        model = BlurHashRequester.imageRequest(
+            context,
+            blurhash
+        ),
+        contentDescription = description,
+        contentScale = contentScale,
+        modifier = modifier
+    )
+}
+
+@OptIn(ExperimentalFoundationApi::class)
+@Composable
+fun ZoomableImageDialog(imageUrl: ZoomableContent, allImages: List<ZoomableContent> = listOf(imageUrl), onDismiss: () -> Unit) {
+    Dialog(
+        onDismissRequest = onDismiss,
+        properties = DialogProperties(usePlatformDefaultWidth = false)
+    ) {
+        Surface(modifier = Modifier.fillMaxSize(), color = MaterialTheme.colors.background) {
+            Column() {
+                val pagerState: PagerState = remember { PagerState() }
+
+                LaunchedEffect(key1 = pagerState, key2 = imageUrl) {
+                    val page = allImages.indexOf(imageUrl)
+                    if (page > -1) {
+                        pagerState.scrollToPage(page)
+                    }
+                }
+
+                Row(
+                    modifier = Modifier
+                        .padding(10.dp)
+                        .fillMaxWidth(),
+                    horizontalArrangement = Arrangement.SpaceBetween,
+                    verticalAlignment = Alignment.CenterVertically
+                ) {
+                    CloseButton(onCancel = onDismiss)
+
+                    val myContent = allImages[pagerState.currentPage]
+                    if (myContent is ZoomableUrlContent) {
+                        SaveToGallery(url = myContent.url)
+                    } else if (myContent is ZoomableLocalImage && myContent.localFile != null) {
+                        SaveToGallery(localFile = myContent.localFile, mimeType = myContent.mimeType)
+                    }
+                }
+
+                if (allImages.size > 1) {
+                    SlidingCarousel(
+                        pagerState = pagerState,
+                        itemsCount = allImages.size,
+                        itemContent = { index ->
+                            RenderImageOrVideo(allImages[index])
+                        }
+                    )
+                } else {
+                    RenderImageOrVideo(imageUrl)
+                }
+            }
+        }
+    }
+}
+
+@Composable
+fun RenderImageOrVideo(content: ZoomableContent) {
+    val mainModifier = Modifier
+        .fillMaxSize()
+        .zoomable(rememberZoomState())
+
+    if (content is ZoomableUrlImage) {
+        UrlImageView(content = content, mainImageModifier = mainModifier)
+    } else if (content is ZoomableUrlVideo) {
+        Row(verticalAlignment = Alignment.CenterVertically, modifier = Modifier.fillMaxSize(1f)) {
+            VideoView(content.url, content.description)
+        }
+    } else if (content is ZoomableLocalImage) {
+        LocalImageView(content = content, mainImageModifier = mainModifier)
+    } else if (content is ZoomableLocalVideo) {
+        Row(verticalAlignment = Alignment.CenterVertically, modifier = Modifier.fillMaxSize(1f)) {
+            VideoView(content.localFile, content.description)
+        }
+    }
+}
+
+@OptIn(ExperimentalCoilApi::class)
+private fun verifyHash(content: ZoomableUrlContent, context: Context): Boolean? {
+    if (content.hash == null) return null
+
+    context.imageLoader.diskCache?.get(content.url)?.use { snapshot ->
+        val imageFile = snapshot.data.toFile()
+        val bytes = imageFile.readBytes()
+        val sha256 = MessageDigest.getInstance("SHA-256")
+
+        val hash = sha256.digest(bytes).toHexKey()
+
+        Log.d("Image Hash Verification", "$hash == ${content.hash}")
+
+        return hash == content.hash
+    }
+
+    return null
+}
+
+@Composable
+private fun HashVerificationSymbol(verifiedHash: Boolean?, modifier: Modifier) {
+    if (verifiedHash == null) return
+
+    val localContext = LocalContext.current
+    val scope = rememberCoroutineScope()
+
+    Box(
+        modifier
+            .width(40.dp)
+            .height(40.dp)
+            .padding(10.dp)
+    ) {
+        Box(
+            Modifier
+                .clip(CircleShape)
+                .fillMaxSize(0.6f)
+                .align(Alignment.Center)
+                .background(MaterialTheme.colors.background)
+        )
+
+        if (verifiedHash == true) {
+            IconButton(
+                onClick = {
+                    scope.launch {
+                        Toast.makeText(
+                            localContext,
+                            localContext.getString(R.string.hash_verification_passed),
+                            Toast.LENGTH_LONG
+                        ).show()
+                    }
+                }
+            ) {
+                Icon(
+                    painter = painterResource(R.drawable.ic_verified),
+                    "Hash Verified",
+                    tint = Nip05.copy(0.52f).compositeOver(MaterialTheme.colors.background),
+                    modifier = Modifier.size(30.dp)
+                )
+            }
+        } else if (verifiedHash == false) {
+            IconButton(
+                onClick = {
+                    scope.launch {
+                        Toast.makeText(
+                            localContext,
+                            localContext.getString(R.string.hash_verification_failed),
+                            Toast.LENGTH_LONG
+                        ).show()
+                    }
+                }
+            ) {
+                Icon(
+                    tint = Color.Red,
+                    imageVector = Icons.Default.Report,
+                    contentDescription = "Invalid Hash",
+                    modifier = Modifier.size(30.dp)
+                )
+            }
+        }
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/ui/components/ZoomableImageView.kt

@@ -1,188 +0,0 @@
-package com.vitorpamplona.amethyst.ui.components
-
-import androidx.compose.foundation.ExperimentalFoundationApi
-import androidx.compose.foundation.border
-import androidx.compose.foundation.combinedClickable
-import androidx.compose.foundation.layout.Arrangement
-import androidx.compose.foundation.layout.Column
-import androidx.compose.foundation.layout.Row
-import androidx.compose.foundation.layout.fillMaxSize
-import androidx.compose.foundation.layout.fillMaxWidth
-import androidx.compose.foundation.layout.padding
-import androidx.compose.foundation.pager.PagerState
-import androidx.compose.foundation.shape.RoundedCornerShape
-import androidx.compose.foundation.text.InlineTextContent
-import androidx.compose.foundation.text.appendInlineContent
-import androidx.compose.material.LocalTextStyle
-import androidx.compose.material.MaterialTheme
-import androidx.compose.material.Surface
-import androidx.compose.material.Text
-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.draw.clip
-import androidx.compose.ui.layout.ContentScale
-import androidx.compose.ui.platform.LocalClipboardManager
-import androidx.compose.ui.res.stringResource
-import androidx.compose.ui.text.AnnotatedString
-import androidx.compose.ui.text.Placeholder
-import androidx.compose.ui.text.PlaceholderVerticalAlign
-import androidx.compose.ui.text.buildAnnotatedString
-import androidx.compose.ui.text.withStyle
-import androidx.compose.ui.unit.dp
-import androidx.compose.ui.unit.sp
-import androidx.compose.ui.window.Dialog
-import androidx.compose.ui.window.DialogProperties
-import coil.compose.AsyncImage
-import coil.compose.AsyncImagePainter
-import com.vitorpamplona.amethyst.R
-import com.vitorpamplona.amethyst.ui.actions.CloseButton
-import com.vitorpamplona.amethyst.ui.actions.LoadingAnimation
-import com.vitorpamplona.amethyst.ui.actions.SaveToGallery
-import net.engawapg.lib.zoomable.rememberZoomState
-import net.engawapg.lib.zoomable.zoomable
-
-@Composable
-@OptIn(ExperimentalFoundationApi::class)
-fun ZoomableImageView(word: String, images: List<String> = listOf(word)) {
-    val clipboardManager = LocalClipboardManager.current
-
-    // store the dialog open or close state
-    var dialogOpen by remember {
-        mutableStateOf(false)
-    }
-
-    // store the dialog open or close state
-    var imageState by remember {
-        mutableStateOf<AsyncImagePainter.State?>(null)
-    }
-
-    val removedParamsFromUrl = word.split("?")[0].lowercase()
-    if (imageExtensions.any { removedParamsFromUrl.endsWith(it) }) {
-        AsyncImage(
-            model = word,
-            contentDescription = word,
-            contentScale = ContentScale.FillWidth,
-            modifier = Modifier
-                .fillMaxWidth()
-                .clip(shape = RoundedCornerShape(15.dp))
-                .border(
-                    1.dp,
-                    MaterialTheme.colors.onSurface.copy(alpha = 0.12f),
-                    RoundedCornerShape(15.dp)
-                )
-                .combinedClickable(
-                    onClick = { dialogOpen = true },
-                    onLongClick = { clipboardManager.setText(AnnotatedString(word)) }
-                ),
-            onLoading = {
-                imageState = it
-            },
-            onSuccess = {
-                imageState = it
-            }
-        )
-
-        if (imageState !is AsyncImagePainter.State.Success) {
-            ClickableUrl(urlText = "$word ", url = word)
-
-            val myId = "inlineContent"
-            val emptytext = buildAnnotatedString {
-                withStyle(
-                    LocalTextStyle.current.copy(color = MaterialTheme.colors.primary).toSpanStyle()
-                ) {
-                    append("")
-                    appendInlineContent(myId, "[icon]")
-                }
-            }
-            val inlineContent = mapOf(
-                Pair(
-                    myId,
-                    InlineTextContent(
-                        Placeholder(
-                            width = 17.sp,
-                            height = 17.sp,
-                            placeholderVerticalAlign = PlaceholderVerticalAlign.Center
-                        )
-                    ) {
-                        LoadingAnimation()
-                    }
-                )
-            )
-
-            // Empty Text for Size of Icon
-            Text(
-                text = emptytext,
-                inlineContent = inlineContent
-            )
-        }
-    } else {
-        VideoView(word) { dialogOpen = true }
-    }
-
-    if (dialogOpen) {
-        ZoomableImageDialog(word, images, onDismiss = { dialogOpen = false })
-    }
-}
-
-@OptIn(ExperimentalFoundationApi::class)
-@Composable
-fun ZoomableImageDialog(imageUrl: String, allImages: List<String> = listOf(imageUrl), onDismiss: () -> Unit) {
-    Dialog(
-        onDismissRequest = onDismiss,
-        properties = DialogProperties(usePlatformDefaultWidth = false)
-    ) {
-        Surface(modifier = Modifier.fillMaxSize(), color = MaterialTheme.colors.background) {
-            Column() {
-                var pagerState: PagerState = remember { PagerState() }
-
-                Row(
-                    modifier = Modifier
-                        .padding(10.dp)
-                        .fillMaxWidth(),
-                    horizontalArrangement = Arrangement.SpaceBetween,
-                    verticalAlignment = Alignment.CenterVertically
-                ) {
-                    CloseButton(onCancel = onDismiss)
-
-                    SaveToGallery(url = allImages[pagerState.currentPage])
-                }
-
-                if (allImages.size > 1) {
-                    SlidingCarousel(
-                        pagerState = pagerState,
-                        itemsCount = allImages.size,
-                        itemContent = { index ->
-                            RenderImageOrVideo(allImages[index])
-                        }
-                    )
-                } else {
-                    RenderImageOrVideo(imageUrl)
-                }
-            }
-        }
-    }
-}
-
-@Composable
-private fun RenderImageOrVideo(imageUrl: String) {
-    val removedParamsFromUrl = imageUrl.split("?")[0].lowercase()
-    if (imageExtensions.any { removedParamsFromUrl.endsWith(it) }) {
-        AsyncImage(
-            model = imageUrl,
-            contentDescription = stringResource(id = R.string.profile_image),
-            contentScale = ContentScale.FillWidth,
-            modifier = Modifier
-                .fillMaxSize()
-                .zoomable(rememberZoomState())
-        )
-    } else {
-        Row(verticalAlignment = Alignment.CenterVertically, modifier = Modifier.fillMaxSize(1f)) {
-            VideoView(imageUrl)
-        }
-    }
-}

app/src/main/java/com/vitorpamplona/amethyst/ui/dal/ChannelFeedFilter.kt

@@ -1,21 +1,23 @@
 package com.vitorpamplona.amethyst.ui.dal
 
 import com.vitorpamplona.amethyst.model.Account
-import com.vitorpamplona.amethyst.model.Channel
 import com.vitorpamplona.amethyst.model.LocalCache
 import com.vitorpamplona.amethyst.model.Note
 
 object ChannelFeedFilter : AdditiveFeedFilter<Note>() {
     lateinit var account: Account
-    lateinit var channel: Channel
+    var channelId: String? = null
 
-    fun loadMessagesBetween(accountLoggedIn: Account, channelId: String) {
-        account = accountLoggedIn
-        channel = LocalCache.getOrCreateChannel(channelId)
+    fun loadMessagesBetween(accountLoggedIn: Account, channelId: String?) {
+        this.account = accountLoggedIn
+        this.channelId = channelId
     }
 
     // returns the last Note of each user.
     override fun feed(): List<Note> {
+        val processingChannel = channelId ?: return emptyList()
+        val channel = LocalCache.getOrCreateChannel(processingChannel)
+
         return channel.notes
             .values
             .filter { account.isAcceptable(it) }
@@ -24,6 +26,9 @@ object ChannelFeedFilter : AdditiveFeedFilter<Note>() {
     }
 
     override fun applyFilter(collection: Set<Note>): Set<Note> {
+        val processingChannel = channelId ?: return emptySet()
+        val channel = LocalCache.getOrCreateChannel(processingChannel)
+
         return collection
             .filter { it.idHex in channel.notes.keys && account.isAcceptable(it) }
             .toSet()

app/src/main/java/com/vitorpamplona/amethyst/ui/dal/ChatroomFeedFilter.kt

@@ -3,21 +3,22 @@ package com.vitorpamplona.amethyst.ui.dal
 import com.vitorpamplona.amethyst.model.Account
 import com.vitorpamplona.amethyst.model.LocalCache
 import com.vitorpamplona.amethyst.model.Note
-import com.vitorpamplona.amethyst.model.User
 
 object ChatroomFeedFilter : AdditiveFeedFilter<Note>() {
     var account: Account? = null
-    var withUser: User? = null
+    var withUser: String? = null
 
     fun loadMessagesBetween(accountIn: Account, userId: String) {
         account = accountIn
-        withUser = LocalCache.checkGetOrCreateUser(userId)
+        withUser = userId
     }
 
     // returns the last Note of each user.
     override fun feed(): List<Note> {
+        val processingUser = withUser ?: return emptyList()
+
         val myAccount = account
-        val myUser = withUser
+        val myUser = LocalCache.checkGetOrCreateUser(processingUser)
 
         if (myAccount == null || myUser == null) return emptyList()
 
@@ -32,8 +33,10 @@ object ChatroomFeedFilter : AdditiveFeedFilter<Note>() {
     }
 
     override fun applyFilter(collection: Set<Note>): Set<Note> {
+        val processingUser = withUser ?: return emptySet()
+
         val myAccount = account
-        val myUser = withUser
+        val myUser = LocalCache.checkGetOrCreateUser(processingUser)
 
         if (myAccount == null || myUser == null) return emptySet()
 

app/src/main/java/com/vitorpamplona/amethyst/ui/dal/ChatroomListKnownFeedFilter.kt

@@ -9,10 +9,11 @@ object ChatroomListKnownFeedFilter : FeedFilter<Note>() {
     // returns the last Note of each user.
     override fun feed(): List<Note> {
         val me = account.userProfile()
+        val followingKeySet = account.followingKeySet()
 
         val privateChatrooms = me.privateChatrooms
         val messagingWith = privateChatrooms.keys.filter {
-            me.hasSentMessagesTo(it) && account.isAcceptable(it)
+            (it.pubkeyHex in followingKeySet || me.hasSentMessagesTo(it)) && !account.isHidden(it)
         }
 
         val privateMessages = messagingWith.mapNotNull { it ->

app/src/main/java/com/vitorpamplona/amethyst/ui/dal/ChatroomListNewFeedFilter.kt

@@ -8,11 +8,12 @@ object ChatroomListNewFeedFilter : FeedFilter<Note>() {
 
     // returns the last Note of each user.
     override fun feed(): List<Note> {
-        val me = ChatroomListKnownFeedFilter.account.userProfile()
+        val me = account.userProfile()
+        val followingKeySet = ChatroomListKnownFeedFilter.account.followingKeySet()
 
         val privateChatrooms = account.userProfile().privateChatrooms
         val messagingWith = privateChatrooms.keys.filter {
-            !me.hasSentMessagesTo(it) && account.isAcceptable(it)
+            it.pubkeyHex !in followingKeySet && !me.hasSentMessagesTo(it) && account.isAcceptable(it)
         }
 
         val privateMessages = messagingWith.mapNotNull { it ->

app/src/main/java/com/vitorpamplona/amethyst/ui/dal/GlobalFeedFilter.kt

@@ -45,6 +45,6 @@ object GlobalFeedFilter : AdditiveFeedFilter<Note>() {
     }
 
     override fun sort(collection: Set<Note>): List<Note> {
-        return collection.sortedBy { it.createdAt() }.reversed()
+        return collection.sortedWith(compareBy({ it.createdAt() }, { it.idHex })).reversed()
     }
 }

app/src/main/java/com/vitorpamplona/amethyst/ui/dal/HomeConversationsFeedFilter.kt

@@ -18,9 +18,8 @@ object HomeConversationsFeedFilter : AdditiveFeedFilter<Note>() {
     }
 
     private fun innerApplyFilter(collection: Collection<Note>): Set<Note> {
-        val user = account.userProfile()
-        val followingKeySet = user.cachedFollowingKeySet()
-        val followingTagSet = user.cachedFollowingTagSet()
+        val followingKeySet = account.selectedUsersFollowList(account.defaultHomeFollowList) ?: emptySet()
+        val followingTagSet = account.selectedTagsFollowList(account.defaultHomeFollowList) ?: emptySet()
 
         return collection
             .asSequence()

app/src/main/java/com/vitorpamplona/amethyst/ui/dal/HomeNewThreadFeedFilter.kt

@@ -3,6 +3,7 @@ package com.vitorpamplona.amethyst.ui.dal
 import com.vitorpamplona.amethyst.model.Account
 import com.vitorpamplona.amethyst.model.LocalCache
 import com.vitorpamplona.amethyst.model.Note
+import com.vitorpamplona.amethyst.service.model.HighlightEvent
 import com.vitorpamplona.amethyst.service.model.LongTextNoteEvent
 import com.vitorpamplona.amethyst.service.model.PollNoteEvent
 import com.vitorpamplona.amethyst.service.model.RepostEvent
@@ -23,14 +24,13 @@ object HomeNewThreadFeedFilter : AdditiveFeedFilter<Note>() {
     }
 
     private fun innerApplyFilter(collection: Collection<Note>): Set<Note> {
-        val user = account.userProfile()
-        val followingKeySet = user.cachedFollowingKeySet()
-        val followingTagSet = user.cachedFollowingTagSet()
+        val followingKeySet = account.selectedUsersFollowList(account.defaultHomeFollowList) ?: emptySet()
+        val followingTagSet = account.selectedTagsFollowList(account.defaultHomeFollowList) ?: emptySet()
 
         return collection
             .asSequence()
             .filter { it ->
-                (it.event is TextNoteEvent || it.event is RepostEvent || it.event is LongTextNoteEvent || it.event is PollNoteEvent) &&
+                (it.event is TextNoteEvent || it.event is RepostEvent || it.event is LongTextNoteEvent || it.event is PollNoteEvent || it.event is HighlightEvent) &&
                     (it.author?.pubkeyHex in followingKeySet || (it.event?.isTaggedHashes(followingTagSet) ?: false)) &&
                     // && account.isAcceptable(it)  // This filter follows only. No need to check if acceptable
                     it.author?.let { !account.isHidden(it.pubkeyHex) } ?: true &&

app/src/main/java/com/vitorpamplona/amethyst/ui/dal/NotificationFeedFilter.kt

@@ -1,6 +1,7 @@
 package com.vitorpamplona.amethyst.ui.dal
 
 import com.vitorpamplona.amethyst.model.Account
+import com.vitorpamplona.amethyst.model.GLOBAL_FOLLOWS
 import com.vitorpamplona.amethyst.model.LocalCache
 import com.vitorpamplona.amethyst.model.Note
 import com.vitorpamplona.amethyst.model.User
@@ -18,6 +19,10 @@ object NotificationFeedFilter : AdditiveFeedFilter<Note>() {
     }
 
     private fun innerApplyFilter(collection: Collection<Note>): Set<Note> {
+        val isGlobal = account.defaultNotificationFollowList == GLOBAL_FOLLOWS
+
+        val followingKeySet = account.selectedUsersFollowList(account.defaultNotificationFollowList) ?: emptySet()
+
         val loggedInUser = account.userProfile()
         val loggedInUserHex = loggedInUser.pubkeyHex
 
@@ -28,6 +33,7 @@ object NotificationFeedFilter : AdditiveFeedFilter<Note>() {
                 it.event !is BadgeDefinitionEvent &&
                 it.event !is BadgeProfilesEvent &&
                 it.author !== loggedInUser &&
+                (isGlobal || it.author?.pubkeyHex in followingKeySet) &&
                 it.event?.isTaggedUser(loggedInUserHex) ?: false &&
                 (it.author == null || !account.isHidden(it.author!!.pubkeyHex)) &&
                 tagsAnEventByUser(it, loggedInUser)

app/src/main/java/com/vitorpamplona/amethyst/ui/dal/PeopleListFeedFilter.kt

@@ -0,0 +1,25 @@
+package com.vitorpamplona.amethyst.ui.dal
+
+import com.vitorpamplona.amethyst.model.Account
+import com.vitorpamplona.amethyst.model.LocalCache
+import com.vitorpamplona.amethyst.model.Note
+import com.vitorpamplona.amethyst.service.model.PeopleListEvent
+
+object PeopleListFeedFilter : FeedFilter<Note>() {
+    lateinit var account: Account
+
+    override fun feed(): List<Note> {
+        val privKey = account.loggedIn.privKey ?: return emptyList()
+
+        val lists = LocalCache.addressables.values
+            .asSequence()
+            .filter {
+                (it.event is PeopleListEvent)
+            }
+            .toSet()
+
+        return lists
+            .sortedBy { it.createdAt() }
+            .reversed()
+    }
+}