feat: auto refresh when mcbbs return 504

mcbbs/vending-machine.user.js

@@ -1,7 +1,7 @@
 // ==UserScript==
 // @name         MCBBS自动售卖机
 // @namespace    https://miaowoo.cc/
-// @version      0.7.0
+// @version      0.7.1
 // @description  自动售卖道具
 // @author       MiaoWoo
 // @match        https://www.mcbbs.net/home.php?mod=magic**
@@ -35,6 +35,9 @@
         tbn.append(slaveLi)
     }
     async function main() {
+        if (document.getElementsByTagName('h1')[0].innerText.startsWith(504)) {
+            return refresh()
+        }
         createMenu()
         params = location.href.split('?')[1].split('&').map(s => s.split('=')).reduce((pre, cur, index) => { pre[cur[0]] = cur[1]; return pre }, {})
         if (!params.nodeType) { return console.log('nodeType is undefined skip...') }