Forums: Fix displaying as muted (#3808)

src/components/left/main/ChatBadge.tsx

@@ -48,7 +48,7 @@ const ChatBadge: FC<OwnProps> = ({
 
   const shouldBeMuted = useMemo(() => {
     const hasUnmutedUnreadTopics = chat.topics
-      && Object.values(chat.topics).some((acc) => acc.isMuted && acc.unreadCount);
+      && Object.values(chat.topics).some((acc) => !acc.isMuted && acc.unreadCount);
 
     return isMuted || (chat.topics && !hasUnmutedUnreadTopics);
   }, [chat, isMuted]);

src/global/actions/apiUpdaters/chats.ts

@@ -1,6 +1,6 @@
 import { addActionHandler, getGlobal, setGlobal } from '../../index';
 
-import type { ApiUpdateChat } from '../../../api/types';
+import type { ApiMessage, ApiUpdateChat } from '../../../api/types';
 import type { ActionReturnType } from '../../types';
 import { MAIN_THREAD_ID } from '../../../api/types';
 
@@ -25,6 +25,7 @@ import {
   selectThreadParam,
   selectChatFullInfo,
   selectTabState,
+  selectTopicFromMessage,
 } from '../../selectors';
 import { updateUnreadReactions } from '../../reducers/reactions';
 import { updateTabState } from '../../reducers/tabs';
@@ -143,6 +144,13 @@ addActionHandler('apiUpdate', (global, actions, update): ActionReturnType => {
         });
       }
 
+      const topic = chat.isForum ? selectTopicFromMessage(global, message as ApiMessage) : undefined;
+      if (topic) {
+        global = updateTopic(global, update.chatId, topic.id, {
+          unreadCount: topic.unreadCount ? topic.unreadCount + 1 : 1,
+        });
+      }
+
       setGlobal(global);
 
       notifyAboutMessage({