(Chat): Display system add/remove messages immediately after update

fixes #9876

src/app_service/service/chat/service.nim

@@ -400,22 +400,41 @@ QtObject:
         chats.add(chat)
     result = (chats, messages)
 
-  proc processMessageUpdateAfterSend*(self: Service, response: RpcResponse[JsonNode]): (seq[ChatDto], seq[MessageDto]) =
-    result = self.parseChatResponse(response)
-    var (chats, messages) = result
-    if chats.len == 0 or messages.len == 0:
-      error "no chats or messages in the parsed response"
-      return
+  proc parseGroupChatResponse*(self: Service, response: RpcResponse[JsonNode]): (ChatDto, seq[MessageDto]) =
+    var chat: ChatDto
+    var messages: seq[MessageDto] = @[]
+    if response.result{"chat"} != nil:
+      chat = chat_dto.toChatDto(response.result["chat"])
+      self.updateOrAddChat(chat)
+    if response.result{"messages"} != nil:
+      for jsonMsg in response.result["messages"]:
+        messages.add(jsonMsg.toMessageDto)
+    return (chat, messages)
 
+  proc signalChatsAndMessagesUpdates*(self: Service, chats: seq[ChatDto], messages: seq[MessageDto]) =
+    if chats.len == 0 and messages.len == 0:
+      error "both chats and messages are empty in the parsed response"
+      return
     for chat in chats:
       if (chat.active):
         self.events.emit(SIGNAL_CHAT_CREATED, CreatedChatArgs(chat: chat))
-
+    var chatMap: Table[string, ChatDto] = initTable[string, ChatDto]()
+    for chat in chats:
+      chatMap[chat.id] = chat
     for msg in messages:
-      for chat in chats:
-        if chat.id == msg.chatId:
-          self.events.emit(SIGNAL_SENDING_SUCCESS, MessageSendingSuccess(message: msg, chat: chat))
-          break
+      if chatMap.hasKey(msg.chatId):
+        let chat = chatMap[msg.chatId]
+        self.events.emit(SIGNAL_SENDING_SUCCESS, MessageSendingSuccess(message: msg, chat: chat))
+
+  proc processMessageUpdateAfterSend*(self: Service, response: RpcResponse[JsonNode]): (seq[ChatDto], seq[MessageDto]) =
+    result = self.parseChatResponse(response)
+    var (chats, messages) = result
+    self.signalChatsAndMessagesUpdates(chats, messages)
+
+  proc processGroupChatUpdateAfterSend*(self: Service, response: RpcResponse[JsonNode]): (ChatDto, seq[MessageDto]) =
+    result = self.parseGroupChatResponse(response)
+    var (chat, messages) = result
+    self.signalChatsAndMessagesUpdates(@[chat], messages)
 
   proc processUpdateForTransaction*(self: Service, messageId: string, response: RpcResponse[JsonNode]) =
     var (chats, _) = self.processMessageUpdateAfterSend(response)
@@ -665,6 +684,7 @@ QtObject:
       let response = status_group_chat.addMembers(communityID, chatId, members)
       if (response.error.isNil):
         self.events.emit(SIGNAL_CHAT_MEMBERS_ADDED, ChatMembersAddedArgs(chatId: chatId, ids: members))
+        discard self.processGroupChatUpdateAfterSend(response)
     except Exception as e:
       error "error while adding group members: ", msg = e.msg
 
@@ -673,6 +693,7 @@ QtObject:
       let response = status_group_chat.removeMember(communityID, chatId, member)
       if (response.error.isNil):
         self.events.emit(SIGNAL_CHAT_MEMBER_REMOVED, ChatMemberRemovedArgs(chatId: chatId, id: member))
+        discard self.processGroupChatUpdateAfterSend(response)
     except Exception as e:
       error "error while removing member from group: ", msg = e.msg