Join/Leave rooms.

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

VideoCalls/NCExternalSignalingController.h

@@ -14,5 +14,6 @@
 - (BOOL)isEnabled;
 - (void)setServer:(NSString *)serverUrl andTicket:(NSString *)ticket;
 - (void)joinRoom:(NSString *)roomId withSessionId:(NSString *)sessionId;
+- (void)leaveRoom:(NSString *)roomId;
 
 @end

VideoCalls/NCExternalSignalingController.m

@@ -195,9 +195,9 @@ static NSTimeInterval kMaxReconnectInterval     = 16;
     [_webSocket send:jsonString];
 }
 
-- (void)leaveRoom:(NSString *)roomId withSessionId:(NSString *)sessionId
+- (void)leaveRoom:(NSString *)roomId
 {
-    [self joinRoom:@"" withSessionId:sessionId];
+    [self joinRoom:@"" withSessionId:@""];
 }
 
 - (void)joinResponseReceived:(NSDictionary *)joinDict

VideoCalls/NCRoomController.m

@@ -10,7 +10,6 @@
 
 #import "NCAPIController.h"
 #import "NCSettingsController.h"
-#import "NCExternalSignalingController.h"
 
 NSString * const NCRoomControllerDidReceiveInitialChatHistoryNotification   = @"NCRoomControllerDidReceiveInitialChatHistoryNotification";
 NSString * const NCRoomControllerDidReceiveChatHistoryNotification          = @"NCRoomControllerDidReceiveChatHistoryNotification";
@@ -39,9 +38,6 @@ NSString * const NCRoomControllerDidReceiveChatMessagesNotification         = @"
         if (![[NCSettingsController sharedInstance] serverHasTalkCapability:kCapabilityNoPing]) {
             [self startPingRoom];
         }
-        if ([[NCExternalSignalingController sharedInstance] isEnabled]) {
-            [[NCExternalSignalingController sharedInstance] joinRoom:token withSessionId:sessionId];
-        }
     }
     
     return self;

VideoCalls/NCRoomsManager.m

@@ -13,6 +13,7 @@
 #import "RoomCreation2TableViewController.h"
 #import "NCAPIController.h"
 #import "NCChatMessage.h"
+#import "NCExternalSignalingController.h"
 #import "NCRoomController.h"
 #import "NCSettingsController.h"
 #import "NCUserInterfaceController.h"
@@ -85,6 +86,9 @@ NSString * const NCRoomsManagerDidReceiveChatMessagesNotification   = @"ChatMess
                 controller.inCall = call;
                 [_activeRooms setObject:controller forKey:room.token];
                 [userInfo setObject:controller forKey:@"roomController"];
+                if ([[NCExternalSignalingController sharedInstance] isEnabled]) {
+                    [[NCExternalSignalingController sharedInstance] joinRoom:room.token withSessionId:sessionId];
+                }
             } else {
                 [userInfo setObject:error forKey:@"error"];
                 NSLog(@"Could not join room. Error: %@", error.description);
@@ -122,7 +126,11 @@ NSString * const NCRoomsManagerDidReceiveChatMessagesNotification   = @"ChatMess
         
         [[NCAPIController sharedInstance] exitRoom:room.token withCompletionBlock:^(NSError *error) {
             NSMutableDictionary *userInfo = [NSMutableDictionary new];
-            if (error) {
+            if (!error) {
+                if ([[NCExternalSignalingController sharedInstance] isEnabled]) {
+                    [[NCExternalSignalingController sharedInstance] leaveRoom:room.token];
+                }
+            } else {
                 [userInfo setObject:error forKey:@"error"];
                 NSLog(@"Could not exit room. Error: %@", error.description);
             }