implement PN support on iOS & Android

packages/stream_chat_v1/android/app/src/main/AndroidManifest.xml

@@ -44,5 +44,11 @@
         <meta-data
             android:name="flutterEmbedding"
             android:value="2" />
+
+        <!-- Set custom default icon. This is used when no icon is set for incoming notification messages.
+             See README(https://goo.gl/l4GJaQ) for more. -->
+        <meta-data
+            android:name="com.google.firebase.messaging.default_notification_icon"
+            android:resource="@drawable/ic_notification" />
     </application>
 </manifest>

packages/stream_chat_v1/android/app/src/main/res/drawable-anydpi-v24/ic_notification.xml

@@ -0,0 +1,16 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24"
+    android:tint="#FFFFFF"
+    android:autoMirrored="true">
+  <group android:scaleX="0.92"
+      android:scaleY="0.92"
+      android:translateX="0.96"
+      android:translateY="0.96">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M20,2L4,2c-1.1,0 -1.99,0.9 -1.99,2L2,22l4,-4h14c1.1,0 2,-0.9 2,-2L22,4c0,-1.1 -0.9,-2 -2,-2zM18,14L6,14v-2h12v2zM18,11L6,11L6,9h12v2zM18,8L6,8L6,6h12v2z"/>
+  </group>
+</vector>

packages/stream_chat_v1/android/app/src/main/res/drawable-anydpi-v24/ic_notification_in_app.xml

@@ -0,0 +1,15 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24"
+    android:tint="#FFFFFF">
+  <group android:scaleX="0.92"
+      android:scaleY="0.92"
+      android:translateX="0.96"
+      android:translateY="0.96">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M20,2L4,2c-1.1,0 -1.99,0.9 -1.99,2L2,22l4,-4h14c1.1,0 2,-0.9 2,-2L22,4c0,-1.1 -0.9,-2 -2,-2zM9,11L7,11L7,9h2v2zM13,11h-2L11,9h2v2zM17,11h-2L15,9h2v2z"/>
+  </group>
+</vector>

packages/stream_chat_v1/lib/app.dart

@@ -8,6 +8,7 @@ import 'package:example/state/init_data.dart';
 import 'package:example/utils/app_config.dart';
 import 'package:example/utils/local_notification_observer.dart';
 import 'package:example/utils/localizations.dart';
+import 'package:firebase_messaging/firebase_messaging.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/scheduler.dart';
@@ -15,11 +16,63 @@ import 'package:flutter_secure_storage/flutter_secure_storage.dart';
 import 'package:go_router/go_router.dart';
 import 'package:provider/provider.dart';
 import 'package:sentry_flutter/sentry_flutter.dart';
+import 'package:firebase_core/firebase_core.dart';
 import 'package:stream_chat_flutter/stream_chat_flutter.dart';
 import 'package:stream_chat_localizations/stream_chat_localizations.dart';
 import 'package:stream_chat_persistence/stream_chat_persistence.dart';
 import 'package:streaming_shared_preferences/streaming_shared_preferences.dart';
 
+import 'firebase_options.dart';
+
+@pragma('vm:entry-point')
+Future<void> _firebaseMessagingBackgroundHandler(RemoteMessage message) async {
+  await Firebase.initializeApp(
+    options: DefaultFirebaseOptions.currentPlatform,
+  );
+  debugPrint('[onBackgroundMessage] #firebase; message: ${message.toMap()}');
+
+  final data = message.data;
+  if (data['type'] != 'message.new') {
+    return;
+  }
+  String? apiKey, userId, token;
+  if (!kIsWeb) {
+    const secureStorage = FlutterSecureStorage();
+    apiKey = await secureStorage.read(key: kStreamApiKey);
+    userId = await secureStorage.read(key: kStreamUserId);
+    token = await secureStorage.read(key: kStreamToken);
+  }
+  debugPrint('[onBackgroundMessage] #firebase; apiKey: $apiKey, userId: $userId, token: $token');
+  if (userId == null || token == null) {
+    return;
+  }
+  final client = buildStreamChatClient(apiKey ?? kDefaultStreamApiKey);
+  final persistenceClient = StreamChatPersistenceClient();
+  await persistenceClient.connect(userId);
+
+  await client.connectUser(
+    User(id: userId),
+    token,
+    connectWebSocket: false,
+  );
+
+  final messageId = data['id'];
+  final cid = data['cid'];
+  final response = await client.getMessage(messageId);
+  debugPrint('[onBackgroundMessage] #firebase; response: $response');
+  await persistenceClient.updateMessages(cid, [response.message]);
+  debugPrint('[onBackgroundMessage] #firebase; saved');
+
+}
+
+Future<void> _firebaseMessagingForegroundHandler(RemoteMessage message) async {
+  debugPrint('[onForegroundMessage] #firebase; message: ${message.toMap()}');
+}
+
+Future<void> _firebaseMessagingOpenedHandler(RemoteMessage message) async {
+  debugPrint('[onOpenedMessage] #firebase; message: ${message.toMap()}');
+}
+
 final chatPersistentClient = StreamChatPersistenceClient(
   logLevel: Level.SEVERE,
   connectionMode: ConnectionMode.regular,
@@ -28,7 +81,7 @@ final chatPersistentClient = StreamChatPersistenceClient(
 void _sampleAppLogHandler(LogRecord record) async {
   if (kDebugMode) StreamChatClient.defaultLogHandler(record);
 
-  // report errors to setnry.io
+  // report errors to sentry.io
   if (record.error != null || record.stackTrace != null) {
     await Sentry.captureException(
       record.error,
@@ -62,6 +115,9 @@ class _StreamChatSampleAppState extends State<StreamChatSampleApp>
     with SplashScreenStateMixin, TickerProviderStateMixin {
   final InitNotifier _initNotifier = InitNotifier();
 
+  final firebaseSubscriptions = <StreamSubscription<dynamic>>[];
+  StreamSubscription<String?>? userIdSubscription;
+
   Future<InitData> _initConnection() async {
     String? apiKey, userId, token;
 
@@ -71,7 +127,7 @@ class _StreamChatSampleAppState extends State<StreamChatSampleApp>
       userId = await secureStorage.read(key: kStreamUserId);
       token = await secureStorage.read(key: kStreamToken);
     }
-
+    debugPrint('[initConnection] #firebase; apiKey: $apiKey, userId: $userId, token: $token');
     final client = buildStreamChatClient(apiKey ?? kDefaultStreamApiKey);
 
     if (userId != null && token != null) {
@@ -86,6 +142,77 @@ class _StreamChatSampleAppState extends State<StreamChatSampleApp>
     return InitData(client, prefs);
   }
 
+  Future<void> _initFirebaseMessaging(StreamChatClient client) async {
+    userIdSubscription?.cancel();
+    userIdSubscription = client.state.currentUserStream
+        .map((it) => it?.id)
+        .distinct()
+        .listen((userId) async {
+      debugPrint('[onUserIdSet] #firebase; userId: "$userId"');
+
+      if (userId != null) {
+        FirebaseMessaging.onBackgroundMessage(
+            _firebaseMessagingBackgroundHandler);
+        firebaseSubscriptions.add(FirebaseMessaging.onMessage
+            .listen(_firebaseMessagingForegroundHandler));
+        firebaseSubscriptions
+            .add(FirebaseMessaging.onMessageOpenedApp.listen((message) async {
+          debugPrint(
+              '[onOpenedMessage] #firebase; message: ${message.toMap()}');
+          final channelCid = (message.data['cid'] as String?) ?? '';
+          final channelType = (message.data['channel_type'] as String?) ?? '';
+          final channelId = (message.data['channel_id'] as String?) ?? '';
+          debugPrint('[onOpenedMessage] #firebase; channelCid; $channelCid, channelType: $channelType, channelId: $channelId');
+          var channel = client.state.channels[channelCid];
+          debugPrint('[onOpenedMessage] #firebase; channel1: $channel');
+          if (channel == null) {
+            channel = client.channel(
+              channelId,
+              id: channelId,
+            );
+            final state = await channel.watch();
+            debugPrint('[onOpenedMessage] #firebase; channelState: $state');
+          }
+          debugPrint('[onOpenedMessage] #firebase; channel2: $channel');
+
+          debugPrint('[onOpenedMessage] #firebase; #1');
+          WidgetsBinding.instance.addPostFrameCallback((timeStamp) async {
+            if (channel == null) {
+              debugPrint('[onOpenedMessage] #firebase; rejected (channel is null)');
+              return;
+            }
+            try {
+              debugPrint('[onOpenedMessage] #firebase; #2: ${_navigatorKey.currentContext}');
+              final router = GoRouter.of(_navigatorKey.currentContext!);
+              debugPrint('[onOpenedMessage] #firebase; #3: $router');
+
+              router.pushNamed(
+                Routes.CHANNEL_PAGE.name,
+                params: Routes.CHANNEL_PAGE.params(channel),
+              );
+              debugPrint('[onOpenedMessage] #firebase; #4');
+            } catch (e, stk) {
+              debugPrint('[onOpenedMessage] #firebase; failed: $e; $stk');
+            }
+          });
+
+        }));
+        firebaseSubscriptions.add(
+            FirebaseMessaging.instance.onTokenRefresh.listen((token) async {
+          debugPrint('[onTokenRefresh] #firebase; token: "$token"');
+          await client.addDevice(token, PushProvider.firebase);
+          debugPrint('[onTokenRefresh] #firebase; token set: $token');
+        }));
+        final token = await FirebaseMessaging.instance.getToken();
+        debugPrint('[initFirebaseMessaging] #firebase; token: "$token"');
+        if (token != null) {
+          await client.addDevice(token, PushProvider.firebase);
+          debugPrint('[initFirebaseMessaging] #firebase; token set: $token');
+        }
+      }
+    });
+  }
+
   @override
   void initState() {
     final timeOfStartMs = DateTime.now().millisecondsSinceEpoch;
@@ -100,19 +227,38 @@ class _StreamChatSampleAppState extends State<StreamChatSampleApp>
 
         if (now - timeOfStartMs > 1500) {
           SchedulerBinding.instance.addPostFrameCallback((timeStamp) {
+            debugPrint('[forwardAnimations] #firebase; context1: $context');
+            debugPrint('[forwardAnimations] #firebase; _navigatorKey.currentContext1: ${_navigatorKey.currentContext}');
             forwardAnimations();
+            final router = GoRouter.of(_navigatorKey.currentContext!);
+            debugPrint('[forwardAnimations] #firebase; router1: ${router}');
           });
         } else {
           Future.delayed(const Duration(milliseconds: 1500)).then((value) {
+            debugPrint('[forwardAnimations] #firebase; context2: $context');
+            debugPrint('[forwardAnimations] #firebase; _navigatorKey.currentContext2: ${_navigatorKey.currentContext}');
             forwardAnimations();
+            final router = GoRouter.of(_navigatorKey.currentContext!);
+            debugPrint('[forwardAnimations] #firebase; router2: ${router}');
           });
         }
+        _initFirebaseMessaging(initData.client);
       },
     );
 
     super.initState();
   }
 
+  @override
+  void dispose() {
+    super.dispose();
+    userIdSubscription?.cancel();
+    for (final subscription in firebaseSubscriptions) {
+      unawaited(subscription.cancel());
+    }
+    firebaseSubscriptions.clear();
+  }
+
   final GlobalKey<NavigatorState> _navigatorKey = GlobalKey();
   LocalNotificationObserver? localNotificationObserver;
 
@@ -154,6 +300,7 @@ class _StreamChatSampleAppState extends State<StreamChatSampleApp>
 
   @override
   Widget build(BuildContext context) {
+    debugPrint('[AppState.build] #firebase; context: $context');
     return Stack(
       alignment: Alignment.center,
       children: [

packages/stream_chat_v1/lib/main.dart

@@ -1,35 +1,21 @@
 import 'dart:async';
 
+import 'package:example/app.dart';
 import 'package:example/utils/app_config.dart';
+import 'package:firebase_core/firebase_core.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:sentry_flutter/sentry_flutter.dart';
-import 'package:firebase_core/firebase_core.dart';
-import 'package:firebase_messaging/firebase_messaging.dart';
-
-
-import 'package:example/app.dart';
 
 import 'firebase_options.dart';
 
-@pragma('vm:entry-point')
-Future<void> _firebaseMessagingBackgroundHandler(RemoteMessage message) async {
-  print("#firebase; PN_2 ");
-  await Firebase.initializeApp();
-
-  // If you're going to use other Firebase services in the background, such as Firestore,
-  // make sure you call `initializeApp` before using other Firebase services.
-  print('[setupPushNotifications] newMessage: ${message.toMap()}');
-}
-
 Future<void> main() async {
   WidgetsFlutterBinding.ensureInitialized();
-  print("#firebase; PN_1");
-  await Firebase.initializeApp();
-  Firebase.apps.forEach((it) {
-    print("#firebase; app: $it");
-  });
-  FirebaseMessaging.onBackgroundMessage(_firebaseMessagingBackgroundHandler);
+  debugPrint("#firebase; PN_1");
+  await Firebase.initializeApp(
+    options: DefaultFirebaseOptions.currentPlatform,
+  );
+
   /// Captures errors reported by the Flutter framework.
   FlutterError.onError = (FlutterErrorDetails details) {
     if (kDebugMode) {

packages/stream_chat_v1/lib/pages/channel_list_page.dart

@@ -69,6 +69,7 @@ class _ChannelListPageState extends State<ChannelListPage> {
 
   @override
   Widget build(BuildContext context) {
+    print(">>>>>>>>>> ChannelListPage");
     final user = StreamChat.of(context).currentUser;
     if (user == null) {
       return const Offstage();
@@ -76,8 +77,10 @@ class _ChannelListPageState extends State<ChannelListPage> {
     return Scaffold(
       backgroundColor: StreamChatTheme.of(context).colorTheme.appBg,
       appBar: StreamChannelListHeader(
-        onNewChatButtonTap: () =>
-            GoRouter.of(context).pushNamed(Routes.NEW_CHAT.name),
+        onNewChatButtonTap: () {
+          print(">>>>>>>>>> onNewChatButtonTap");
+          GoRouter.of(context).pushNamed(Routes.NEW_CHAT.name);
+        },
         preNavigationCallback: () =>
             FocusScope.of(context).requestFocus(FocusNode()),
       ),
@@ -220,6 +223,7 @@ class LeftDrawer extends StatelessWidget {
                         .withOpacity(.5),
                   ),
                   onTap: () {
+                    print(">>>>>>>>>> NEW_CHAT");
                     Navigator.of(context).pop();
                     GoRouter.of(context).pushNamed(Routes.NEW_CHAT.name);
                   },
@@ -238,6 +242,7 @@ class LeftDrawer extends StatelessWidget {
                         .withOpacity(.5),
                   ),
                   onTap: () {
+                    print(">>>>>>>>>> NEW_GROUP_CHAT");
                     Navigator.of(context).pop();
                     GoRouter.of(context).pushNamed(Routes.NEW_GROUP_CHAT.name);
                   },
@@ -253,6 +258,7 @@ class LeftDrawer extends StatelessWidget {
                     alignment: Alignment.bottomCenter,
                     child: ListTile(
                       onTap: () async {
+                        print(">>>>>>>>>> CHOOSE_USER");
                         final client = StreamChat.of(context).client;
                         final router = GoRouter.of(context);
                         final initNotifier = context.read<InitNotifier>();

packages/stream_chat_v1/lib/pages/channel_page.dart

@@ -47,12 +47,14 @@ class _ChannelPageState extends State<ChannelPage> {
 
   @override
   Widget build(BuildContext context) {
+    print(">>>>>>>>>> CHANNEL PAGE");
     return Scaffold(
       backgroundColor: StreamChatTheme.of(context).colorTheme.appBg,
       appBar: StreamChannelHeader(
         showTypingIndicator: false,
         onBackPressed: () => GoRouter.of(context).pop(),
         onImageTap: () async {
+          print(">>>>>>>>>> onImageTap");
           final channel = StreamChannel.of(context).channel;
           final router = GoRouter.of(context);
 
@@ -62,6 +64,7 @@ class _ChannelPageState extends State<ChannelPage> {
               (element) => element.user!.id != currentUser!.id,
             );
             if (otherUser != null) {
+              print(">>>>>>>>>> GROUP_INFO_SCREEN otherUser");
               router.pushNamed(
                 Routes.CHAT_INFO_SCREEN.name,
                 params: Routes.CHAT_INFO_SCREEN.params(channel),
@@ -69,6 +72,7 @@ class _ChannelPageState extends State<ChannelPage> {
               );
             }
           } else {
+            print(">>>>>>>>>> GROUP_INFO_SCREEN");
             GoRouter.of(context).pushNamed(
               Routes.GROUP_INFO_SCREEN.name,
               params: Routes.GROUP_INFO_SCREEN.params(channel),

packages/stream_chat_v1/lib/utils/notifications_service.dart

@@ -21,7 +21,7 @@ void showLocalNotification(
   if (event.message == null) return;
   final flutterLocalNotificationsPlugin = FlutterLocalNotificationsPlugin();
   const initializationSettingsAndroid =
-      AndroidInitializationSettings('launch_background');
+      AndroidInitializationSettings('ic_notification_in_app');
   const initializationSettingsIOS = IOSInitializationSettings();
   const initializationSettings = InitializationSettings(
     android: initializationSettingsAndroid,
@@ -33,6 +33,8 @@ void showLocalNotification(
   await flutterLocalNotificationsPlugin.initialize(
     initializationSettings,
     onSelectNotification: (channelCid) async {
+      debugPrint("[onSelectNotification] #firebase; channelCid: $channelCid");
+      debugPrint("[onSelectNotification] #firebase; context: $context");
       if (channelCid != null) {
         final client = StreamChat.of(context).client;
         final router = GoRouter.of(context);