Refactoring push helper

lib/l10n/intl_de.arb

@@ -1166,6 +1166,13 @@
       "unreadEvents": {}
     }
   },
+  "unreadChats": "{unreadCount} ungelesene Unterhaltungen",
+  "@unreadChats": {
+    "type": "text",
+    "placeholders": {
+      "unreadCount": {}
+    }
+  },
   "unreadMessagesInChats": "{unreadEvents} ungelesene Nachrichten in {unreadChats} Chats",
   "@unreadMessagesInChats": {
     "type": "text",

lib/l10n/intl_messages.arb

@@ -1,5 +1,5 @@
 {
-  "@@last_modified": "2020-05-07T07:52:19.301540",
+  "@@last_modified": "2020-05-07T11:13:43.051811",
   "About": "About",
   "@About": {
     "type": "text",
@@ -785,6 +785,11 @@
     "type": "text",
     "placeholders": {}
   },
+  "Open app to read messages": "Open app to read messages",
+  "@Open app to read messages": {
+    "type": "text",
+    "placeholders": {}
+  },
   "Open camera": "Open camera",
   "@Open camera": {
     "type": "text",
@@ -1164,6 +1169,13 @@
       "type": {}
     }
   },
+  "unreadChats": "{unreadCount} unread chats",
+  "@unreadChats": {
+    "type": "text",
+    "placeholders": {
+      "unreadCount": {}
+    }
+  },
   "unreadMessages": "{unreadEvents} unread messages",
   "@unreadMessages": {
     "type": "text",

lib/l10n/l10n.dart

@@ -490,6 +490,8 @@ class L10n extends MatrixLocalizations {
   String get oopsSomethingWentWrong =>
       Intl.message("Oops something went wrong...");
 
+  String get openAppToReadMessages => Intl.message('Open app to read messages');
+
   String get openCamera => Intl.message('Open camera');
 
   String get optionalGroupName => Intl.message("(Optional) Group name");
@@ -705,6 +707,12 @@ class L10n extends MatrixLocalizations {
         args: [type],
       );
 
+  String unreadChats(String unreadCount) => Intl.message(
+        "$unreadCount unread chats",
+        name: "unreadChats",
+        args: [unreadCount],
+      );
+
   String unreadMessages(String unreadEvents) => Intl.message(
         "$unreadEvents unread messages",
         name: "unreadMessages",

lib/utils/firebase_controller.dart

@@ -19,6 +19,9 @@ abstract class FirebaseController {
   static FlutterLocalNotificationsPlugin _flutterLocalNotificationsPlugin =
       FlutterLocalNotificationsPlugin();
   static BuildContext context;
+  static const String CHANNEL_ID = 'fluffychat_push';
+  static const String CHANNEL_NAME = 'FluffyChat push channel';
+  static const String CHANNEL_DESCRIPTION = 'Push notifications for FluffyChat';
 
   static Future<void> setupFirebase(Client client, String clientName) async {
     if (Platform.isIOS) iOS_Permission();
@@ -83,7 +86,7 @@ abstract class FirebaseController {
 
     _firebaseMessaging.configure(
       onMessage: _onMessage,
-      onBackgroundMessage: _onMessage,
+      onBackgroundMessage: _showDefaultNotification,
       onResume: goToRoom,
       onLaunch: goToRoom,
     );
@@ -106,7 +109,8 @@ abstract class FirebaseController {
       if (context != null && Matrix.of(context).activeRoomId == roomId) {
         return null;
       }
-      final i18n = context == null ? L10n('en') : L10n.of(context);
+      final i18n =
+          context == null ? L10n(Platform.localeName) : L10n.of(context);
 
       // Get the client
       Client client;
@@ -181,9 +185,7 @@ abstract class FirebaseController {
 
       // Show notification
       var androidPlatformChannelSpecifics = AndroidNotificationDetails(
-          'fluffychat_push',
+          CHANNEL_ID, CHANNEL_NAME, CHANNEL_DESCRIPTION,
-          'FluffyChat push channel',
-          'Push notifications for FluffyChat',
           styleInformation: MessagingStyleInformation(
             person,
             conversationTitle: title,
@@ -224,6 +226,7 @@ abstract class FirebaseController {
       var initializationSettings = InitializationSettings(
           initializationSettingsAndroid, initializationSettingsIOS);
       await flutterLocalNotificationsPlugin.initialize(initializationSettings);
+      final l10n = L10n(Platform.localeName);
 
       // Notification data and matrix data
       Map<dynamic, dynamic> data = message['data'] ?? message;
@@ -239,17 +242,14 @@ abstract class FirebaseController {
 
       // Display notification
       var androidPlatformChannelSpecifics = AndroidNotificationDetails(
-          'fluffychat_push',
+          CHANNEL_ID, CHANNEL_NAME, CHANNEL_DESCRIPTION,
-          'FluffyChat push channel',
+          importance: Importance.Max, priority: Priority.High);
-          'Push notifications for FluffyChat',
-          importance: Importance.Max,
-          priority: Priority.High);
       var iOSPlatformChannelSpecifics = IOSNotificationDetails();
       var platformChannelSpecifics = NotificationDetails(
           androidPlatformChannelSpecifics, iOSPlatformChannelSpecifics);
-      final String title = "$unread unread chats";
+      final String title = l10n.unreadChats(unread.toString());
       await flutterLocalNotificationsPlugin.show(
-          1, title, 'Open app to read messages', platformChannelSpecifics,
+          1, title, l10n.openAppToReadMessages, platformChannelSpecifics,
           payload: roomID);
     } catch (exception) {
       debugPrint("[Push] Error while processing background notification: " +