Migrate all channel Id to remove pending channel

app/src/main/java/org/unifiedpush/distributor/nextpush/LocalNotification.kt

@@ -37,6 +37,6 @@ object LocalNotification {
     }
 
     fun getNotificationChannelId(context: Context, title: String): String {
-        return "${context.getString(R.string.app_name)}.Push.$title"
+        return "${context.packageName}.Push.$title"
     }
 }

app/src/main/java/org/unifiedpush/distributor/nextpush/Migrations.kt

@@ -0,0 +1,59 @@
+package org.unifiedpush.distributor.nextpush
+
+import android.app.NotificationManager
+import android.content.Context
+import android.os.Build
+import android.util.Log
+import androidx.annotation.RequiresApi
+import org.unifiedpush.distributor.nextpush.utils.TAG
+
+class Migrations(val context: Context) {
+    private val sharedPreferences = context.getSharedPreferences(Store.PREF_NAME, Context.MODE_PRIVATE)
+
+    fun run() {
+        val currentVersion = sharedPreferences.getInt(PREF_MIGRATIONS_LEVEL, 0)
+        if (currentVersion == LAST_VERSION) return
+        Log.d(TAG, "Migration from $currentVersion to $LAST_VERSION")
+        if (currentVersion < 20000) {
+            Migration020000.run(context)
+        }
+        sharedPreferences.edit().putInt(PREF_MIGRATIONS_LEVEL, LAST_VERSION).apply()
+    }
+
+    interface Migration {
+        fun run(context: Context)
+    }
+
+    /**
+     * Migration from 0.x.x to 2.0.0
+     */
+    object Migration020000: Migration {
+        override fun run(context: Context) {
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+                removeOldOsNotificationChannel(context)
+            }
+        }
+        /**
+         * Migration to remove old notifications channel, they will be recreated
+         * once a notification arrives. We didn't remove channel Id when app were
+         * deleted. In the same time, we changed the channel ID: they were using
+         * the app name, and we move to packageId
+         */
+        @RequiresApi(Build.VERSION_CODES.O)
+        fun removeOldOsNotificationChannel(context: Context) {
+            val notificationManager = context.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
+            val oldPrefix = context.getString(R.string.app_name)
+            notificationManager.notificationChannels.forEach {
+                if (it.id.startsWith(oldPrefix)) {
+                    notificationManager.deleteNotificationChannel(it.id)
+                }
+            }
+        }
+    }
+
+    companion object {
+        // 2.0.0
+        private const val LAST_VERSION = 20000
+        private const val PREF_MIGRATIONS_LEVEL = "migrations.level"
+    }
+}

app/src/main/java/org/unifiedpush/distributor/nextpush/activities/StartActivity.kt

@@ -14,6 +14,7 @@ import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.Job
 import kotlinx.coroutines.launch
 import org.unifiedpush.distributor.nextpush.EventBus
+import org.unifiedpush.distributor.nextpush.Migrations
 import org.unifiedpush.distributor.nextpush.account.AccountFactory
 import org.unifiedpush.distributor.nextpush.activities.MainActivity.Companion.goToMainActivity
 import org.unifiedpush.distributor.nextpush.activities.ui.StartUi
@@ -35,6 +36,7 @@ class StartActivity : ComponentActivity() {
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
+        Migrations(this).run()
 
         if (AccountFactory.getAccount(this)?.connected == true) {
             goToMainActivity(this)