Handle call closed event

lib/helpers/events_helper.dart

@@ -86,6 +86,13 @@ class UserLeftCallEvent {
   UserLeftCallEvent(this.callID, this.userID);
 }
 
+/// Call closed event
+class CallClosedEvent {
+  final int callID;
+
+  CallClosedEvent(this.callID);
+}
+
 class EventsHelper {
   static EventBus _mgr = EventBus();
 

lib/helpers/websocket_helper.dart

@@ -173,6 +173,11 @@ class WebSocketHelper {
             UserLeftCallEvent(msg.data["callID"], msg.data["userID"]));
         break;
 
+      // The call has been close
+      case "call_closed":
+        EventsHelper.emit(CallClosedEvent(msg.data));
+        break;
+
       default:
         throw Exception("Unknown message type: ${msg.title}");
     }