Sync CallKit screen mute button with SDK mute action (#920)

Author: Brazol

packages/stream_video/lib/src/call/call.dart

@@ -2156,6 +2156,9 @@ class Call {
         Result.error('Session is null');
 
     if (result.isSuccess) {
+      await _streamVideo.pushNotificationManager
+          ?.setCallMutedByCid(callCid.value, !enabled);
+
       _stateManager.participantSetMicrophoneEnabled(
         enabled: enabled,
       );

packages/stream_video/lib/src/push_notification/push_notification_manager.dart

@@ -107,6 +107,9 @@ abstract class PushNotificationManager {
   /// [uuid] is the unique identifier for the call.
   Future<void> setCallConnected(String uuid);
 
+  /// Sets call as muted/unmuted (iOS only).
+  Future<void> setCallMutedByCid(String cid, bool isMuted);
+
   /// Retrieves a list of active calls.
   Future<List<CallData>> activeCalls();
 

packages/stream_video_flutter/lib/src/call_screen/call_container.dart

@@ -131,6 +131,7 @@ class _StreamCallContainerState extends State<StreamCallContainer> {
       _callState = callState;
     });
     if (callState.status.isDisconnected) {
+      _callStateSubscription?.cancel();
       if (widget.onCallDisconnected != null) {
         final disconnectedStatus = callState.status as CallStatusDisconnected;
         final disconnectedProperties = CallDisconnectedProperties(

packages/stream_video_push_notification/lib/src/stream_video_push_notification.dart

@@ -176,7 +176,19 @@ class StreamVideoPushNotificationManager implements PushNotificationManager {
       _idCallKit,
       onCallEvent.listen(
         (event) {
-          if (event is ActionCallIncoming) {
+          if (event is ActionCallToggleMute) {
+            {
+              _logger.d(() =>
+                  '[onCallEvent] ActionCallToggleMute received: uuid=${event.uuid}, isMuted=${event.isMuted}');
+              final call = activeCall;
+              if (call != null) {
+                call.setMicrophoneEnabled(enabled: !event.isMuted);
+              } else {
+                _logger.w(
+                    () => '[onCallEvent] Cannot toggle mute: no active call');
+              }
+            }
+          } else if (event is ActionCallIncoming) {
             if (!client.isConnected) {
               client.openConnection();
             }
@@ -406,6 +418,21 @@ class StreamVideoPushNotificationManager implements PushNotificationManager {
     }
   }
 
+  @override
+  Future<void> setCallMutedByCid(String cid, bool isMuted) async {
+    final activeCalls = await this.activeCalls();
+    final calls = activeCalls
+        .where((call) => call.callCid == cid && call.uuid != null)
+        .toList();
+
+    for (final call in calls) {
+      // Silence events to avoid infinite loop
+      FlutterCallkitIncoming.silenceEvents();
+      await FlutterCallkitIncoming.muteCall(call.uuid!, isMuted: isMuted);
+      FlutterCallkitIncoming.unsilenceEvents();
+    }
+  }
+
   @override
   Future<String?> getDevicePushTokenVoIP() async {
     if (CurrentPlatform.isIos) {