/**
 * Copyright (c) 2024 Vitor Pamplona
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to use,
 * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
 * Software, and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
package com.greenart7c3.nostrsigner.service

import android.app.NotificationManager
import android.content.Context
import android.content.Intent
import android.util.Log
import android.util.LruCache
import androidx.core.content.ContextCompat
import com.greenart7c3.nostrsigner.LocalPreferences
import com.greenart7c3.nostrsigner.NostrSigner
import com.vitorpamplona.quartz.events.Event
import com.vitorpamplona.quartz.events.GiftWrapEvent
import kotlinx.coroutines.CancellationException
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.SupervisorJob
import kotlinx.coroutines.cancel
import kotlinx.coroutines.launch
import org.unifiedpush.android.connector.MessagingReceiver

class PushMessageReceiver : MessagingReceiver() {
    companion object {
        private val TAG = "Amber-OSSPushReceiver"
    }

    private val appContext = NostrSigner.instance.applicationContext
    private val scope = CoroutineScope(Dispatchers.IO + SupervisorJob())
    private val eventCache = LruCache<String, String>(100)
    private val pushHandler = PushDistributorHandler

    override fun onMessage(
        context: Context,
        message: ByteArray,
        instance: String,
    ) {
        val messageStr = String(message)
        Log.d(TAG, "New message ${message.decodeToString()} for Instance: $instance")
        scope.launch {
            try {
                parseMessage(messageStr)?.let { receiveIfNew(it) }
            } catch (e: Exception) {
                if (e is CancellationException) throw e
                Log.d(TAG, "Message could not be parsed: ${e.message}")
            }
        }
    }

    private suspend fun parseMessage(message: String): GiftWrapEvent? {
        (Event.fromJson(message) as? GiftWrapEvent)?.let {
            return it
        }
        return null
    }

    private suspend fun receiveIfNew(event: GiftWrapEvent) {
        if (eventCache.get(event.id) == null) {
            eventCache.put(event.id, event.id)
            EventNotificationConsumer(appContext).consume(event)
        }
    }

    override fun onNewEndpoint(
        context: Context,
        endpoint: String,
        instance: String,
    ) {
        Log.d(TAG, "New endpoint provided:- $endpoint for Instance: $instance")
        val sanitizedEndpoint = endpoint.dropLast(5)
        PushDistributorHandler.setEndpoint(sanitizedEndpoint)
        scope.launch(Dispatchers.IO) {
            RegisterAccounts(LocalPreferences.allSavedAccounts()).go(sanitizedEndpoint)
            NotificationUtils.getOrCreateDMChannel(appContext)
        }
    }

    override fun onReceive(
        context: Context,
        intent: Intent,
    ) {
        val intentData = intent.dataString
        val intentAction = intent.action.toString()
        Log.d(TAG, "Intent Data:- $intentData Intent Action: $intentAction")
        super.onReceive(context, intent)
    }

    override fun onRegistrationFailed(
        context: Context,
        instance: String,
    ) {
        Log.d(TAG, "Registration failed for Instance: $instance")
        scope.cancel()
        PushDistributorHandler.forceRemoveDistributor(context)
    }

    override fun onUnregistered(
        context: Context,
        instance: String,
    ) {
        val removedEndpoint = PushDistributorHandler.endpoint
        Log.d(TAG, "Endpoint: $removedEndpoint removed for Instance: $instance")
        Log.d(TAG, "App is unregistered. ")
        PushDistributorHandler.forceRemoveDistributor(context)
        PushDistributorHandler.removeEndpoint()
    }

    fun notificationManager(): NotificationManager {
        return ContextCompat.getSystemService(appContext, NotificationManager::class.java)
            as NotificationManager
    }
}
