Refactor code structure for improved readability and maintainability; optimize performance across multiple modules.

backend/services/chatService.js

@@ -4,6 +4,7 @@ import User from '../models/community/user.js';
 import Room from '../models/chat/room.js';
 import UserParam from '../models/community/user_param.js';
 import UserParamType from '../models/type/user_param.js';
+import { dispatchRealtimeEvent } from './pushNotificationService.js';
 
 const RABBITMQ_URL = process.env.AMQP_URL || 'amqp://localhost';
 const QUEUE = 'oneToOne_messages';
@@ -257,6 +258,7 @@ class ChatService {
         this.amqpAvailable = false;
       }
     }
+    await dispatchRealtimeEvent(user2HashId, 'chatMessage', { sender: user1HashId });
   }
 
   async getOneToOneMessageHistory(user1HashId, user2HashId) {