fix(@dekstop/chat): dogfooding_3 crash

Fixes #4827

src/app/modules/main/chat_section/controller.nim

@@ -97,26 +97,19 @@ method init*(self: Controller) =
 
   self.events.on(SIGNAL_CHAT_UPDATE) do(e: Args):
     var args = ChatUpdateArgsNew(e)
-    self.delegate.addChatIfDontExist(args.chats, false, self.events, self.settingsService, self.contactService, self.chatService,
-        self.communityService, self.messageService, self.gifService, self.mailserversService, setChatAsActive = false)
-
+    for chat in args.chats:
+      let belongsToCommunity = chat.communityId.len > 0
+      self.delegate.addChatIfDontExist(chat, belongsToCommunity, self.events, self.settingsService, 
+        self.contactService, self.chatService, self.communityService, self.messageService, self.gifService, 
+        self.mailserversService, setChatAsActive = false)
 
   if (self.isCommunitySection):
     self.events.on(SIGNAL_COMMUNITY_CHANNEL_CREATED) do(e:Args):
       let args = CommunityChatArgs(e)
-      if (args.chat.communityId == self.sectionId):
-        self.delegate.addNewChat(
-          args.chat,
-          true,
-          self.events,
-          self.settingsService,
-          self.contactService,
-          self.chatService,
-          self.communityService,
-          self.messageService,
-          self.gifService,
-          self.mailserversService
-        )
+      let belongsToCommunity = args.chat.communityId.len > 0
+      self.delegate.addChatIfDontExist(args.chat, belongsToCommunity, self.events, self.settingsService, 
+        self.contactService, self.chatService, self.communityService, self.messageService, self.gifService, 
+        self.mailserversService, setChatAsActive = true)
 
     self.events.on(SIGNAL_COMMUNITY_CHANNEL_DELETED) do(e:Args):
       let args = CommunityChatIdArgs(e)

src/app/modules/main/chat_section/module.nim

@@ -413,7 +413,7 @@ method addNewChat*(
   else:
     amIChatAdmin = self.amIMarkedAsAdminUser(chatDto.members)
 
-  if chatDto.categoryId == "":
+  if chatDto.categoryId.len == 0:
     let item = initItem(chatDto.id, chatName, chatImage, isIdenticon, chatDto.color, chatDto.description,
                         chatDto.chatType.int, amIChatAdmin, hasNotification, notificationsCount, chatDto.muted,
                         blocked=false, active=false, position = 0, chatDto.categoryId, chatDto.highlight)
@@ -426,6 +426,10 @@ method addNewChat*(
       self.setActiveItemSubItem(item.id, "")
   else:
     let categoryItem = self.view.chatsModel().getItemById(chatDto.categoryId)
+    if(categoryItem.isNil):
+      error "A category you're trying to add channel to doesn't exist", categoryId=chatDto.categoryId
+      return
+
     let channelItem = initSubItem(chatDto.id, chatDto.categoryId, chatDto.name, chatDto.identicon, false, chatDto.color,
         chatDto.description, chatDto.chatType.int, amIChatAdmin, hasNotification, notificationsCount, chatDto.muted,
         blocked=false, active=false, chatDto.position)
@@ -730,7 +734,7 @@ method setLoadingHistoryMessagesInProgress*(self: Module, isLoading: bool) =
   self.view.setLoadingHistoryMessagesInProgress(isLoading)
 
 method addChatIfDontExist*(self: Module,
-    chats: seq[ChatDto],
+    chat: ChatDto,
     belongsToCommunity: bool,
     events: EventEmitter,
     settingsService: settings_service.ServiceInterface,
@@ -741,7 +745,13 @@ method addChatIfDontExist*(self: Module,
     gifService: gif_service.Service,
     mailserversService: mailservers_service.Service,
     setChatAsActive: bool = true) =
-  for chatDto in chats:
-    if not self.doesChatExist(chatDto.id):
-      self.addNewChat(chatDto, belongsToCommunity, events, settingsService, contactService, chatService,
+  
+    if(belongsToCommunity and self.controller.getMySectionId() != chat.communityId or
+      not belongsToCommunity and self.controller.getMySectionId() != conf.CHAT_SECTION_ID):
+      return
+
+    if self.doesChatExist(chat.id):
+      return
+      
+    self.addNewChat(chat, belongsToCommunity, events, settingsService, contactService, chatService,
       communityService, messageService, gifService, mailserversService, setChatAsActive)

src/app/modules/main/chat_section/private_interfaces/module_controller_delegate_interface.nim

@@ -15,7 +15,7 @@ method doesChatExist*(self: AccessInterface, chatId: string): bool {.base.} =
   raise newException(ValueError, "No implementation available")
 
 method addChatIfDontExist*(self: AccessInterface,
-    chats: seq[ChatDto],
+    chat: ChatDto,
     belongsToCommunity: bool,
     events: EventEmitter,
     settingsService: settings_service.ServiceInterface,