Process "switchto" signaling message.

Signed-off-by: Ivan Sein <ivan@nextcloud.com>

NextcloudTalk/NCCallController.m

@@ -854,6 +854,11 @@ static NSString * const kNCVideoTrackKind = @"video";
     }];
 }
 
+- (void)externalSignalingController:(NCExternalSignalingController *)externalSignalingController shouldSwitchToCall:(NSString *)roomToken
+{
+    [self willSwitchToCall:roomToken];
+}
+
 #pragma mark - Signaling Controller Delegate
 
 - (void)signalingController:(NCSignalingController *)signalingController didReceiveSignalingMessage:(NSDictionary *)message

NextcloudTalk/NCExternalSignalingController.h

@@ -39,6 +39,7 @@ typedef enum NCExternalSignalingSendMessageStatus {
 - (void)externalSignalingController:(NCExternalSignalingController *)externalSignalingController didReceivedParticipantListMessage:(NSDictionary *)participantListMessageDict;
 - (void)externalSignalingControllerShouldRejoinCall:(NCExternalSignalingController *)externalSignalingController;
 - (void)externalSignalingControllerWillRejoinCall:(NCExternalSignalingController *)externalSignalingController;
+- (void)externalSignalingController:(NCExternalSignalingController *)externalSignalingController shouldSwitchToCall:(NSString *)roomToken;
 
 @end
 

NextcloudTalk/NCExternalSignalingController.m

@@ -479,6 +479,8 @@ static NSTimeInterval kWebSocketTimeoutInterval = 15;
         NSLog(@"Participant left room.");
     } else if ([eventType isEqualToString:@"message"]) {
         [self processRoomMessageEvent:[eventDict objectForKey:@"message"]];
+    } else if ([eventType isEqualToString:@"switchto"]) {
+        [self processSwitchToMessageEvent:[eventDict objectForKey:@"switchto"]];
     } else {
         NSLog(@"Unknown room event: %@", eventDict);
     }
@@ -496,6 +498,16 @@ static NSTimeInterval kWebSocketTimeoutInterval = 15;
     }
 }
 
+- (void)processSwitchToMessageEvent:(NSDictionary *)messageDict
+{
+    NSString *roomToken = [messageDict objectForKey:@"roomId"];
+    if (roomToken.length > 0) {
+        [self.delegate externalSignalingController:self shouldSwitchToCall:roomToken];
+    } else {
+        NSLog(@"Unknown switchTo message: %@", messageDict);
+    }
+}
+
 - (void)processRoomListEvent:(NSDictionary *)eventDict
 {
     NSLog(@"Refresh room list.");