feat: update notification handling and improve media selection with captions

app/src/main/java/com/rosetta/messenger/push/RosettaFirebaseMessagingService.kt

@@ -34,10 +34,21 @@ class RosettaFirebaseMessagingService : FirebaseMessagingService() {
         private const val TAG = "RosettaFCM"
         private const val CHANNEL_ID = "rosetta_messages"
         private const val CHANNEL_NAME = "Messages"
-        private const val NOTIFICATION_ID = 1
 
         // 🔥 Флаг - приложение в foreground (видимо пользователю)
         @Volatile var isAppInForeground = false
+
+        /** Уникальный notification ID для каждого чата (по publicKey) */
+        fun getNotificationIdForChat(senderPublicKey: String): Int {
+            return senderPublicKey.hashCode() and 0x7FFFFFFF // positive int
+        }
+
+        /** Убрать уведомление конкретного чата из шторки */
+        fun cancelNotificationForChat(context: Context, senderPublicKey: String) {
+            val notificationManager =
+                    context.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
+            notificationManager.cancel(getNotificationIdForChat(senderPublicKey))
+        }
     }
 
     /** Вызывается когда получен новый FCM токен Отправляем его на сервер через протокол */
@@ -97,6 +108,8 @@ class RosettaFirebaseMessagingService : FirebaseMessagingService() {
 
         createNotificationChannel()
 
+        val notifId = getNotificationIdForChat(senderPublicKey ?: "")
+
         // Intent для открытия чата
         val intent =
                 Intent(this, MainActivity::class.java).apply {
@@ -107,7 +120,7 @@ class RosettaFirebaseMessagingService : FirebaseMessagingService() {
         val pendingIntent =
                 PendingIntent.getActivity(
                         this,
-                        0,
+                        notifId,
                         intent,
                         PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_IMMUTABLE
                 )
@@ -125,7 +138,7 @@ class RosettaFirebaseMessagingService : FirebaseMessagingService() {
 
         val notificationManager =
                 getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
-        notificationManager.notify(NOTIFICATION_ID, notification)
+        notificationManager.notify(notifId, notification)
     }
 
     /** Показать простое уведомление */
@@ -162,7 +175,7 @@ class RosettaFirebaseMessagingService : FirebaseMessagingService() {
 
         val notificationManager =
                 getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
-        notificationManager.notify(NOTIFICATION_ID, notification)
+        notificationManager.notify(System.currentTimeMillis().toInt(), notification)
     }
 
     /** Создать notification channel для Android 8+ */