// ==UserScript==
// @name         新国开AI云端自动刷课
// @namespace    https://github.com/barryallennnnn
// @version      2.1.1
// @description  新国开AI自动刷课
// @author       王杰
// @match        *://lms.ouchn.cn/course/*
// @match        *://lms.ouchn.cn/mod/*
// @grant        GM_getValue
// @grant        GM_setValue
// @grant        GM_deleteValue
// @grant        GM_setClipboard
// @grant        GM_xmlhttpRequest
// @grant        GM_registerMenuCommand
// @grant        unsafeWindow
// @run-at       document-end
// ==/UserScript==

(function () {
  'use strict';


  const BACKEND_URL = "https://www.jirowang.eu.org/api/get-core-code";

  /* ================= 样式 ================= */
  const panelCSS = `
#gk-panel, #gk-auth-panel {position:fixed;inset:12px auto auto 12px;width:360px;background:#fff;border:1px solid #ddd;border-radius:8px;font-family:system-ui;box-shadow:0 4px 20px rgba(0,0,0,.15);z-index:99999;display:flex;flex-direction:column;max-height:90vh}
#gk-head, #gk-auth-head {padding:10px 12px;background:#673ab7;color:#fff;font-size:15px;display:flex;justify-content:space-between;align-items:center}
#gk-close, #gk-auth-close {background:none;border:none;color:#fff;font-size:18px;cursor:pointer}
#gk-body, #gk-auth-body {padding:12px;display:flex;flex-direction:column;gap:10px;overflow:auto}
#gk-bar{height:10px;background:#eee;border-radius:5px;overflow:hidden}
#gk-fill{height:100%;background:#673ab7;width:0%;transition:width .3s}
#gk-log{min-height:160px;max-height:300px;font-size:12px;border:1px solid #eee;border-radius:4px;padding:6px;overflow-y:auto;background:#fafafa;line-height:1.4; word-break: break-all;}
#gk-stats{font-size:12px;color:#666}
.gk-btn{padding:8px 14px;border:none;border-radius:4px;background:#673ab7;color:#fff;font-size:14px;cursor:pointer; text-align:center;}
.gk-btn:disabled{background:#bbb;cursor:not-allowed}
.gk-succ{color:#2e7d32}
.gk-err{color:#c62828}
.gk-info{color:#1565c0}
.gk-input{padding:8px;border:1px solid #ddd;border-radius:4px;font-size:14px;width:100%;box-sizing:border-box;}
.gk-auth-row{display:flex;flex-direction:column;gap:5px;}
`;


  const getGlobalData = () => {
      return typeof unsafeWindow !== 'undefined' ? unsafeWindow.globalData : window.globalData;
  };


  const getMachineCode = () => {
      const gd = getGlobalData();

      if (!gd || !gd.user || !gd.user.id) {
          return "ERROR_NO_USER";
      }


      const uid = String(gd.user.userNo || gd.user.id);


      let hash = 0;
      for (let i = 0; i < uid.length; i++) {
          hash = ((hash << 5) - hash) + uid.charCodeAt(i);
          hash |= 0;
      }

      return Math.abs(hash).toString(16).toUpperCase() + "GK";
  };


  const currentMac = getMachineCode();

  const storageKey = 'gk_act_' + currentMac;


  GM_registerMenuCommand("🔄 清除当前账号授权", () => {
      if (confirm("确定要清除【当前登录账号】的激活状态吗？\n不影响其他已激活的账号。")) {
          GM_deleteValue(storageKey);
          alert("当前账号授权已清除！网页即将刷新。");
          location.reload();
      }
  });

 
  function initAuthPanel() {
    if (document.querySelector('#gk-auth-panel')) return;

    if (currentMac === "ERROR_NO_USER") {
        console.error("未能读取到账号信息，请确认在正确的学习页面！");
        return;
    }

    const style = document.createElement('style'); style.textContent = panelCSS; document.head.appendChild(style);
    const panel = document.createElement('div'); panel.id = 'gk-auth-panel';

    const gd = getGlobalData();
    const userName = gd.user.name || "未知用户";

    panel.innerHTML = `
      <div id="gk-auth-head">脚本授权验证<button id="gk-auth-close">×</button></div>
      <div id="gk-auth-body">
        <div class="gk-auth-row">
            <label style="font-size:12px;color:#2e7d32;font-weight:bold;">当前登录账号：${userName}</label>
            <label style="font-size:12px;color:#666;">账号专属授权码：</label>
            <div style="display:flex;gap:5px;">
                <input type="text" id="gk-mac" class="gk-input" value="${currentMac}" readonly style="background:#f5f5f5;color:#333;">
                <button class="gk-btn" id="gk-copy" style="padding:8px;font-size:12px;">复制</button>
            </div>
            <span style="font-size:12px;color:#c62828;">请将此码发送给作者QQ：1013079885获取当前账号的激活码</span>
        </div>
        <div class="gk-auth-row">
            <label style="font-size:12px;color:#666;">输入专属激活码：</label>
            <input type="text" id="gk-activation" class="gk-input" placeholder="请粘贴对应的激活码">
        </div>
        <button class="gk-btn" id="gk-verify">保存并进入学习面板</button>
      </div>`;
    document.body.appendChild(panel);

    document.querySelector('#gk-auth-close').onclick = () => panel.remove();
    document.querySelector('#gk-copy').onclick = () => {
        GM_setClipboard(currentMac);
        alert('账号授权码已复制！');
    };


    document.querySelector('#gk-verify').onclick = () => {
        const inputCode = document.querySelector('#gk-activation').value.trim();
        if (!inputCode) return alert('请输入激活码！');


        GM_setValue(storageKey, inputCode);
        alert('激活码已保存！请在学习面板点击开始学习进行验证。');
        panel.remove();
        initPanel();
    };
  }


  let isRunning = false;
  function initPanel() {
    if (document.querySelector('#gk-panel')) return;
    const style = document.createElement('style'); style.textContent = panelCSS; document.head.appendChild(style);
    const panel = document.createElement('div'); panel.id = 'gk-panel';
    panel.innerHTML = `
      <div id="gk-head">新国开云端刷课 By：王杰 <button id="gk-close">×</button></div>
      <div id="gk-body">
        <button class="gk-btn" id="gk-run">开始学习 (连接云端验证)</button>
        <div id="gk-bar"><div id="gk-fill"></div></div>
        <div id="gk-stats">准备就绪</div>
        <div id="gk-log"></div>
      </div>`;
    document.body.appendChild(panel);

    document.querySelector('#gk-run').onclick = () => requestCloudCore();
    document.querySelector('#gk-close').onclick = () => panel.remove();
  }


  function requestCloudCore() {
      if (isRunning) { alert('已在运行中'); return; }
      isRunning = true;

      const logEl = document.querySelector('#gk-log');
      const appendLog = (msg, color='black') => {
          logEl.innerHTML += `<div style="color:${color}; margin-top:4px;">[${new Date().toLocaleTimeString()}] ${msg}</div>`;
          logEl.scrollTop = logEl.scrollHeight;
      };


      const code = GM_getValue(storageKey, '');

      if (!code) {
          alert('未能获取到该账号的激活码，请重新激活！');
          GM_deleteValue(storageKey);
          location.reload();
          return;
      }

      appendLog("正在连接云端大脑验证账号授权...", "#1565c0");

      GM_xmlhttpRequest({
          method: 'POST',
          url: BACKEND_URL,
          data: JSON.stringify({ mac: currentMac, code: code }),
          headers: { 'Content-Type': 'application/json' },
          onload: function(response) {
              try {
                  const res = JSON.parse(response.responseText);
                  if (res.success) {
                      appendLog("授权验证通过！获取核心算法中...", "#2e7d32");

                      const loadCore = new Function(res.script);
                      loadCore();

                      const realWindow = typeof unsafeWindow !== 'undefined' ? unsafeWindow : window;
                      const gd = realWindow.globalData;
                      const coreFn = realWindow.cloud_learnTech;

                      if (typeof coreFn === 'function') {
                          coreFn(gd);
                      } else {
                          appendLog("云端方法装载异常，请联系作者修补。", "red");
                          console.log("排错信息：未能找到 cloud_learnTech 函数");
                          isRunning = false;
                      }
                  } else {
                      appendLog(`拦截：${res.msg}`, "red");
                      alert(`云端验证失败：${res.msg}\n可能由于激活码输入错误或被封禁，需重新输入！`);
                      GM_deleteValue(storageKey);
                      isRunning = false;
                      location.reload();
                  }
              } catch (e) {
                  appendLog(`解析云端数据失败：${e.message}`, "red");
                  isRunning = false;
              }
          },
          onerror: function() {
              appendLog("无法连接服务器！可能原因：1.无网络 2.防火墙未放行", "red");
              isRunning = false;
          }
      });
  }

  // 入口路由
  if (currentMac !== "ERROR_NO_USER") {
      // 检查当前账号是否有保存过激活码
      if (GM_getValue(storageKey, '')) {
          initPanel();
      } else {
          initAuthPanel();
      }
  }

})();