feat:Websocket服务拆到单独服务，主后台保持单工通信

frontend_nuxt/composables/useUnreadCount.js

@@ -4,7 +4,6 @@ import { getToken } from '~/utils/auth';
 
 const count = ref(0);
 let isInitialized = false;
-let wsSubscription = null;
 
 export function useUnreadCount() {
   const config = useRuntimeConfig();
@@ -30,64 +29,48 @@ export function useUnreadCount() {
     }
   };
 
-  const initialize = async () => {
+  const setupWebSocketListener = () => {
+    console.log('设置未读消息订阅...');
+    const destination = '/user/queue/unread-count';
+    
+    subscribe(destination, (message) => {
+      const unreadCount = parseInt(message.body, 10);
+      if (!isNaN(unreadCount)) {
+        count.value = unreadCount;
+      }
+    }).then(subscription => {
+      if (subscription) {
+        console.log('未读消息订阅成功');
+      }
+    });
+  };
+
+  const initialize = () => {
     const token = getToken();
     if (!token) {
       count.value = 0;
       return;
     }
 
-    // 总是获取最新的未读数量
-    fetchUnreadCount();
-    
-    // 确保WebSocket连接
     if (!isConnected.value) {
       connect(token);
     }
     
-    // 设置WebSocket监听
-    await setupWebSocketListener();
+    fetchUnreadCount();
+    setupWebSocketListener();
   };
 
-  const setupWebSocketListener = async () => {
-    // 只有在还没有订阅的情况下才设置监听
-    if (!wsSubscription) {
-      
-      watch(isConnected, (newValue) => {
-        if (newValue && !wsSubscription) {
-          const destination = `/user/queue/unread-count`;
-          wsSubscription = subscribe(destination, (message) => {
-            const unreadCount = parseInt(message.body, 10);
-            if (!isNaN(unreadCount)) {
-              count.value = unreadCount;
-            }
-          });
-        }
-      }, { immediate: true });
-    }
-  };
-
-  // 自动初始化逻辑 - 确保每次调用都能获取到未读数量并设置监听
-  const token = getToken();
-  if (token) {
-    if (!isInitialized) {
+  if (!isInitialized) {
+    const token = getToken();
+    if (token) {
       isInitialized = true;
-      initialize(); // 完整初始化，包括WebSocket监听
-    } else {
-      // 即使已经初始化，也要确保获取最新的未读数量并确保WebSocket监听存在
-      fetchUnreadCount();
-      
-      // 确保WebSocket连接和监听都存在
-      if (!isConnected.value) {
-        connect(token);
-      }
-      setupWebSocketListener();
+      initialize();
     }
   }
 
   return {
     count,
     fetchUnreadCount,
-    initialize,
+    initialize, 
   };
 }