改为长链接

src/index.js

@@ -2,6 +2,8 @@ const app = require('./server');
 const config = require('./config');
 const logger = require('./utils/logger');
 const synology = require('./services/synology');
+const { startWsClient, setEventHandler } = require('./services/feishu-ws');
+const { processEvent } = require('./routes/feishu-event');
 
 async function start() {
   logger.info('=== 文件传输自动化系统启动 ===');
@@ -15,12 +17,15 @@ async function start() {
     logger.warn(`群晖 NAS 连接失败（将在首次使用时重试）: ${e.message}`);
   }
 
-  // 启动 HTTP 服务
+  // 启动飞书 WebSocket 长连接（无需公网IP，主动连出去接收事件）
+  setEventHandler(processEvent);
+  startWsClient();
+
+  // HTTP 服务（管理后台 + 健康检查）
   app.listen(config.port, () => {
-    logger.info(`服务已启动: http://0.0.0.0:${config.port}`);
     logger.info(`管理后台: http://0.0.0.0:${config.port}/admin`);
-    logger.info(`飞书事件回调: http://0.0.0.0:${config.port}/api/feishu/event`);
     logger.info(`健康检查: http://0.0.0.0:${config.port}/health`);
+    logger.info('飞书事件: WebSocket 长连接模式（无需配置回调URL）');
   });
 }
 

src/routes/feishu-event.js

@@ -208,3 +208,4 @@ async function processGroupPermission(approvalCode, instanceId) {
 }
 
 module.exports = router;
+module.exports.processEvent = processEvent;

src/services/feishu-ws.js

@@ -0,0 +1,43 @@
+const lark = require('@larksuiteoapi/node-sdk');
+const config = require('../config');
+const logger = require('../utils/logger');
+
+let eventHandler = null;
+
+function setEventHandler(handler) {
+  eventHandler = handler;
+}
+
+/**
+ * 启动飞书 WebSocket 长连接
+ * 无需公网IP，主动连接飞书服务器接收事件
+ */
+function startWsClient() {
+  const wsClient = new lark.WSClient({
+    appId: config.feishu.appId,
+    appSecret: config.feishu.appSecret,
+    loggerLevel: lark.LoggerLevel.info,
+  });
+
+  wsClient.start({
+    eventDispatcher: new lark.EventDispatcher({}).register({
+      'approval_instance': async (data) => {
+        logger.info('[飞书WS] 收到审批事件:', JSON.stringify(data).substring(0, 200));
+        if (eventHandler) {
+          try {
+            await eventHandler({
+              header: { event_type: 'approval_instance' },
+              event: data,
+            });
+          } catch (err) {
+            logger.error(`[飞书WS] 事件处理失败: ${err.message}`);
+          }
+        }
+      },
+    }),
+  });
+
+  logger.info('[飞书WS] 长连接已启动，等待审批事件...');
+}
+
+module.exports = { startWsClient, setEventHandler };