chore: refactor TwitchIrcServer (#5421)

src/singletons/WindowManager.cpp

@@ -688,27 +688,28 @@ IndirectChannel WindowManager::decodeChannel(const SplitDescriptor &descriptor)
 
     if (descriptor.type_ == "twitch")
     {
-        return app->twitch->getOrAddChannel(descriptor.channelName_);
+        return getIApp()->getTwitchAbstract()->getOrAddChannel(
+            descriptor.channelName_);
     }
     else if (descriptor.type_ == "mentions")
     {
-        return app->twitch->mentionsChannel;
+        return getIApp()->getTwitch()->getMentionsChannel();
     }
     else if (descriptor.type_ == "watching")
     {
-        return app->twitch->watchingChannel;
+        return getIApp()->getTwitch()->getWatchingChannel();
     }
     else if (descriptor.type_ == "whispers")
     {
-        return app->twitch->whispersChannel;
+        return getIApp()->getTwitch()->getWhispersChannel();
     }
     else if (descriptor.type_ == "live")
     {
-        return app->twitch->liveChannel;
+        return getIApp()->getTwitch()->getLiveChannel();
     }
     else if (descriptor.type_ == "automod")
     {
-        return app->twitch->automodChannel;
+        return getIApp()->getTwitch()->getAutomodChannel();
     }
     else if (descriptor.type_ == "irc")
     {
@@ -717,7 +718,8 @@ IndirectChannel WindowManager::decodeChannel(const SplitDescriptor &descriptor)
     }
     else if (descriptor.type_ == "misc")
     {
-        return app->twitch->getChannelOrEmpty(descriptor.channelName_);
+        return getIApp()->getTwitchAbstract()->getChannelOrEmpty(
+            descriptor.channelName_);
     }
 
     return Channel::getEmpty();