tempermonkey script

eyny-autologin.js

// ==UserScript==
// @name         Auto-Login Eyny
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Auto login for eyny site
// @author       You
// @match        *://*.eyny.com/*
// @require https://code.jquery.com/jquery-3.6.0.min.js
// ==/UserScript==

(function () {
  'use strict';
  const username = 'username';
  const password = 'password';
  const interval = 3 * 1000;

  const login = async () => {
    const indexHTML = await $.get('/').promise();
    const $indexDOM = $(indexHTML);
    const isLogin = $indexDOM.find('a:contains("退出")').length >= 1

    if (!isLogin) {
      const loginHTML = await $.get('/member.php?mod=logging&action=login&referer=/index.php').promise();
      const $loginDOM = $(loginHTML);
      const $loginForm = $loginDOM.find('form[name="login"]');
      const action = $loginForm.prop('action');

      $loginForm.find('input[name="username"]').val(username);
      $loginForm.find('input[name="password"]').val(password);
      const data = $loginForm.serialize();

      await $.ajax({
        type: 'POST',
        url: action,
        headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
        contentType: 'application/x-www-form-urlencoded; charset=utf-8',
        dataType: 'json',
        data: data,
      }).promise();
    }
  }

  const autoLogin = async () => {
    await login();

    setTimeout(autoLogin, interval);
  }
  autoLogin();
})();