优化定时任务提示

cron.py

@@ -1,5 +1,5 @@
-from datetime import datetime
-from time import sleep
+from datetime import datetime, timedelta
+from time import sleep, time
 
 import fcbsync_dbphoto_mysql
 
@@ -13,5 +13,11 @@ if __name__ == '__main__':
             sleep_time = 20 * 60
 
         # 执行同步
+        start_time = time()
         fcbsync_dbphoto_mysql.main()
+        end_time = time()
+        elapsed_time = end_time - start_time
+        if elapsed_time > 30:
+            print('警告！执行时间超过30秒，请检查程序运行状态！')
+        print(f'下一次同步时间：{datetime.now() + timedelta(seconds=sleep_time)}')
         sleep(sleep_time)