complete the logic of push notification service

src/org/thoughtcrime/securesms/loki/api/PushNotificationService.kt

@@ -1,14 +1,11 @@
 package org.thoughtcrime.securesms.loki.api
 
-import android.R
-import android.app.NotificationManager
-import android.app.PendingIntent
-import android.content.Intent
-import android.graphics.Color
-import android.media.RingtoneManager
+import androidx.core.app.NotificationCompat
+import androidx.core.app.NotificationManagerCompat
 import com.google.firebase.messaging.FirebaseMessagingService
 import com.google.firebase.messaging.RemoteMessage
 import org.thoughtcrime.securesms.jobs.PushContentReceiveJob
+import org.thoughtcrime.securesms.notifications.NotificationChannels
 import org.thoughtcrime.securesms.util.TextSecurePreferences
 import org.whispersystems.libsignal.logging.Log
 import org.whispersystems.signalservice.api.messages.SignalServiceEnvelope
@@ -37,6 +34,24 @@ class PushNotificationService : FirebaseMessagingService() {
             }
         } else {
             Log.d("Loki", "Failed to decode data for message.")
+            val builder = NotificationCompat.Builder(this, NotificationChannels.OTHER)
+                    .setSmallIcon(network.loki.messenger.R.drawable.ic_notification)
+                    .setColor(this.getResources().getColor(network.loki.messenger.R.color.textsecure_primary))
+                    .setContentTitle("Session")
+                    .setContentText("You've got a new message.")
+                    .setPriority(NotificationCompat.PRIORITY_DEFAULT)
+                    .setAutoCancel(true)
+            with(NotificationManagerCompat.from(this)) {
+                notify(11111, builder.build())
             }
         }
     }
+
+    override fun onDeletedMessages() {
+        org.thoughtcrime.securesms.logging.Log.d("Loki", "Called onDeletedMessages.")
+        super.onDeletedMessages()
+        val token = TextSecurePreferences.getFCMToken(this)
+        val userPublicKey = TextSecurePreferences.getLocalNumber(this) ?: return
+        LokiPushNotificationManager.register(token, userPublicKey, this, true)
+    }
+}