// ==UserScript==
// @name         【免费】新版中国教育干部网络学院+解除暂停限制+自动签到|如需免播放加速学习等高级功能见收费版本：http://doc.zhanyc.cn/pages/zgjygbwlxy/
// @namespace    free
// @version      1.0
// @description  当前是免费版本，只包含了视频页面自动播放、解除暂停限制+自动签到功能。如需免播放加速学习等高级功能可升级付费版本|接各类脚本开发、代挂工作，微信：zhanyc_cn 个人网站：http://doc.zhanyc.cn
// @include      *://estudy.enaea.edu.cn/*
// @grant        GM_getValue
// @grant        GM_setValue
// @grant        GM_deleteValue
// @grant        GM_addStyle
// @grant        GM_xmlhttpRequest
// @run-at       document-end
// @require      http://libs.baidu.com/jquery/2.0.0/jquery.min.js
// @antifeature  payment
// @license      Creative Commons
// ==/UserScript==
(function () {
  let $jq = $;

  let baseConfig = {
    pageData: {
      videoTimer: null,
      stuckTimer: null,
      waitTime: 0,
    },
  };

  let docUrl = "http://doc.zhanyc.cn/pages/zgjygbwlxy/";

  let fk = Object.assign(baseConfig, {
    // ========== 工具方法 ==========
    now() {
      return new Date().getTime();
    },
    getGMData(item, def) {
      return GM_getValue(item, def);
    },
    setGMData(item, val) {
      return GM_setValue(item, val);
    },
    delGMData(item) {
      return GM_deleteValue(item);
    },
    timeFmt(sec) {
      sec = Math.floor(Math.abs(sec));
      let h = Math.floor(sec / 3600);
      let m = Math.floor((sec % 3600) / 60);
      let s = sec % 60;
      return (h < 10 ? "0" + h : h) + ":" + (m < 10 ? "0" + m : m) + ":" + (s < 10 ? "0" + s : s);
    },
    waitTimeout(timeout) {
      return new Promise((resolve) => {
        setTimeout(resolve, timeout);
      });
    },
    waitEl(fun, interval = 1000, timeout = 60) {
      return new Promise((resolve, reject) => {
        let _timeOut = timeout * 1000;
        try {
          if (fun()) return resolve();
        } catch (e) { }
        let index = setInterval(() => {
          _timeOut -= interval;
          if (_timeOut < 0) {
            clearInterval(index);
            return reject();
          }
          try {
            if (fun()) {
              clearInterval(index);
              return resolve();
            }
          } catch (e) { }
        }, interval);
      });
    },
    createWorker(f) {
      var blob = new Blob(["(" + f + ")()"]);
      var url = window.URL.createObjectURL(blob);
      var worker = new Worker(url);
      return worker;
    },
    createIntervalWorker(callback, time) {
      var pollingWorker = fk.createWorker(`async function (e) {
              setInterval(async function () {
                this.postMessage(null)
              }, ${time})
            }`);
      pollingWorker.onmessage = callback;
      return pollingWorker;
    },
    stopWorker(vm) {
      try { vm && vm.terminate(); } catch (e) { }
    },

    // ========== 悬浮面板 ==========
    addGlobalStyle() {
      GM_addStyle(`
        .fk-float-panel{position:fixed;left:10px;top:10px;z-index:2147483647;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);border-radius:12px;box-shadow:0 8px 32px rgba(0,0,0,0.3);padding:0;min-width:320px;max-width:400px;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;color:#fff;overflow:hidden}
        .fk-float-panel .fk-panel-header{background:rgba(0,0,0,0.2);padding:10px 15px;display:flex;justify-content:space-between;align-items:center;cursor:move}
        .fk-float-panel .fk-panel-header .fk-title{font-size:15px;font-weight:bold}
        .fk-float-panel .fk-panel-close{background:none;border:none;cursor:pointer;font-size:22px;color:#fff;padding:0 4px;line-height:1;opacity:0.8}
        .fk-float-panel .fk-panel-close:hover{opacity:1}
        .fk-float-panel .fk-panel-body{padding:12px 15px}
        .fk-float-panel .fk-video-status{background:#00b894;border-radius:8px;padding:12px;margin-bottom:10px;text-align:center}
        .fk-float-panel .fk-video-status .fk-status-text{font-size:20px;font-weight:bold;margin-bottom:6px;letter-spacing:2px}
        .fk-float-panel .fk-video-status .fk-progress-text{font-size:14px;margin-bottom:8px}
        .fk-float-panel .fk-progress-bar{width:100%;height:8px;background:rgba(255,255,255,0.3);border-radius:4px;overflow:hidden}
        .fk-float-panel .fk-progress-fill{height:100%;background:linear-gradient(90deg,#ffeaa7,#fdcb6e);border-radius:4px;transition:width 0.5s ease;width:0%}
        .fk-float-panel .fk-notice{background:rgba(255,77,79,0.9);border-radius:6px;padding:8px 10px;margin-bottom:10px;font-size:12px;text-align:center;line-height:1.6}
        .fk-float-panel .fk-promo{background:rgba(0,0,0,0.15);border-radius:6px;padding:10px;font-size:12px;line-height:1.8}
        .fk-float-panel .fk-promo .fk-promo-title{font-size:13px;font-weight:bold;color:#ffeaa7;margin-bottom:4px}
        .fk-float-panel .fk-promo a{color:#ffeaa7;text-decoration:underline}
        .fk-float-panel .fk-signin-status{background:rgba(255,255,255,0.15);border-radius:6px;padding:6px 10px;margin-bottom:8px;font-size:12px;text-align:center;display:none}
      `);
    },
    showFloatPanel() {
      $jq(".fk-float-panel").remove();
      let panelHtml = `
        <div class="fk-float-panel">
          <div class="fk-panel-header">
            <span class="fk-title">脚本助手 - 免费版</span>
            <button class="fk-panel-close" title="关闭">&times;</button>
          </div>
          <div class="fk-panel-body">
            <div class="fk-video-status" id="fkVideoStatusBox">
              <div class="fk-status-text" id="fkVideoStatusText">等待视频加载...</div>
              <div class="fk-progress-text" id="fkVideoProgressText">--:--:-- / --:--:--</div>
              <div class="fk-progress-bar"><div class="fk-progress-fill" id="fkProgressFill"></div></div>
            </div>
            <div class="fk-signin-status" id="fkSigninStatus">自动签到：等待中</div>
            <div class="fk-notice">
              一次付费，永久使用，免费维护！<br>
              如需免播放加速学习等高级功能等高级功能，请升级付费版本
            </div>
            <div class="fk-promo">
              <div class="fk-promo-title">如需使用全功能版本，请通过地址安装付费版本购买授权后可使用</div>
              <div>付费版地址：<a href="${docUrl}" target="_blank">${docUrl}</a></div>
              <div style="margin-top:4px;">接各类脚本开发、代挂、网站小程序开发工作</div>
              <div>微信：zhanyc_cn</div>
            </div>
          </div>
        </div>
      `;
      $jq("body").append(panelHtml);
      $jq(".fk-panel-close").on("click", function () {
        $jq(".fk-float-panel").remove();
      });
    },
    updatePanelStatus(statusText, curTime, totalTime) {
      let $statusText = $jq("#fkVideoStatusText");
      let $progressText = $jq("#fkVideoProgressText");
      let $progressFill = $jq("#fkProgressFill");
      let $statusBox = $jq("#fkVideoStatusBox");
      if ($statusText.length > 0) {
        $statusText.text(statusText);
      }
      if ($progressText.length > 0 && totalTime > 0) {
        $progressText.text(`${this.timeFmt(curTime)} / ${this.timeFmt(totalTime)}`);
      }
      if ($progressFill.length > 0 && totalTime > 0) {
        let pct = Math.min(100, (curTime / totalTime * 100)).toFixed(1);
        $progressFill.css("width", pct + "%");
      }
      if (statusText === "播放中" || statusText.startsWith("播放中")) {
        $statusBox.css("background", "#00b894");
      } else if (statusText === "视频已完成") {
        $statusBox.css("background", "#6c5ce7");
      } else {
        $statusBox.css("background", "#636e72");
      }
    },
    removeFloatPanel() {
      $jq(".fk-float-panel").remove();
    },
    showFloatTip(textArr) {
      $jq(".fk-float-tip-box").remove();
      let listHtml = textArr.map(item => {
        return `<div style="padding:4px 0;font-size:14px;color:#fff;line-height:1.5;">${$jq('<span>').text(item).html()}</div>`;
      }).join('');
      let boxHtml = `
        <div class="fk-float-tip-box" style="position:fixed;left:10px;bottom:10px;z-index:2147483647;background:#a060ff;border:1px solid #6700ff;border-radius:4px;box-shadow:0 2px 8px rgba(0,0,0,0.3);padding:10px 15px;min-width:180px;max-width:360px;">
          <button class="fk-float-tip-close" style="position:absolute;top:2px;right:6px;background:none;border:none;cursor:pointer;font-size:20px;color:#fff;padding:0;line-height:1;">&times;</button>
          ${listHtml}
        </div>
      `;
      $jq("body").append(boxHtml);
      $jq(".fk-float-tip-close").off("click").on("click", function () {
        $jq(".fk-float-tip-box").remove();
      });
    },

    // ========== 视频播放方法 ==========
    playVideo() {
      let vid = this.getVideoEl();
      if (!vid) return;
      vid.volume = 0;
      setTimeout(() => {
        vid.play();
      }, 200);
    },
    getVideoEl() {
      return $jq("video")[0];
    },
    isVideoDone() {
      try {
        return this.getVideoTotal() > 0 && this.getVideoCur() + 5 >= this.getVideoTotal();
      } catch (e) {
        return false;
      }
    },
    getVideoCur() {
      try {
        return this.getVideoEl().currentTime || 0;
      } catch (e) {
        return 0;
      }
    },
    getVideoTotal() {
      try {
        return this.getVideoEl().duration || 0;
      } catch (e) {
        return 0;
      }
    },
    checkVideoPlaying() {
      return new Promise((resolve) => {
        try {
          let t1 = this.getVideoCur();
          setTimeout(() => {
            let t2 = this.getVideoCur();
            resolve(t2 > t1);
          }, 300);
        } catch (e) {
          resolve(false);
        }
      });
    },

    // ========== 视频页面监控 ==========
    async pageVideoMonitor() {
      console.log("%c pageVideoMonitor", "background:rgb(0,0,0);color:#fff");
      if (fk.pageData.videoTimer != null) return;

      this.showFloatPanel();
      this.updatePanelStatus("等待视频加载...");

      // 等待video元素出现
      await this.waitEl(() => {
        try { return this.getVideoEl() != null; } catch (e) { return false; }
      }, 1000, 120);

      // 检查是否在iframe中，尝试获取iframe内的video
      await this.waitTimeout(2000);
      let vid = this.getVideoEl();
      if (!vid) {
        let $iframe = $jq("iframe");
        if ($iframe.length > 0) {
          try {
            let iframeDoc = $iframe[0].contentDocument || $iframe[0].contentWindow.document;
            vid = $jq(iframeDoc).find("video")[0];
          } catch (e) {
            console.log("无法访问iframe内容");
          }
        }
      }

      let lastTime = -1;
      let stuckCount = 0;
      let stuckMaxCount = 30; // 30次 * 2秒 = 60秒无进度则刷新

      fk.pageData.videoTimer = setInterval(async () => {
        try {
          if (fk.pageData.waitTime > 0) {
            fk.pageData.waitTime -= 2;
            return;
          }

          let video = fk.getVideoEl();
          if (!video) {
            fk.updatePanelStatus("等待视频加载...");
            return;
          }

          // 解除播放限制：静音
          video.volume = 0;

          let curTime = fk.getVideoCur();
          let totalTime = fk.getVideoTotal();

          // 更新进度显示
          fk.updatePanelStatus("播放中", curTime, totalTime);

          // 更新页面标题显示进度
          let titleText = `进度：${fk.timeFmt(curTime)}/${fk.timeFmt(totalTime)}`;
          $jq("title").text(titleText);

          // 检测是否卡住
          if (curTime == lastTime && curTime > 0) {
            stuckCount++;
            if (stuckCount >= stuckMaxCount) {
              console.log("视频疑似卡住，刷新页面");
              location.reload();
              return;
            }
          } else {
            stuckCount = 0;
          }
          lastTime = curTime;

          // 检测是否播放完成
          if (fk.isVideoDone()) {
            fk.updatePanelStatus("视频已完成", curTime, totalTime);
            clearInterval(fk.pageData.videoTimer);
            fk.pageData.videoTimer = null;
            return;
          }

          // 检测是否暂停，自动播放
          let isPlaying = await fk.checkVideoPlaying();
          if (!isPlaying) {
            fk.playVideo();
          }
        } catch (e) {
          console.error("视频监控出错", e);
        }
      }, 2000);
    },

    // ========== 自动签到（占位，后续添加） ==========
    // TODO: 自动签到功能 - 在此处添加自动签到相关方法
    // async autoSignIn() {
    //   // 自动签到逻辑
    // },

    // ========== 路由 ==========
    async runByUrl(url) {
      // 清理之前的定时器
      if (fk.pageData.videoTimer != null) {
        clearInterval(fk.pageData.videoTimer);
        fk.pageData.videoTimer = null;
      }
      if (fk.pageData.stuckTimer != null) {
        clearTimeout(fk.pageData.stuckTimer);
        fk.pageData.stuckTimer = null;
      }

      $jq(".fk-float-tip-box").remove();
      $jq(".fk-float-panel").remove();

      url = url.toLowerCase();
      if (url.includes("/web/player/project")) {
        // 视频播放页面 - 启动视频监控
        fk.pageVideoMonitor();
      } else if (url.includes("/web/") && url.includes("/home")) {
        // 项目首页
        fk.showFloatTip(["请从【项目首页】进入视频播放页面，脚本将自动解除播放限制并监控进度"]);
      } else {
        fk.showFloatTip(["请从【项目首页】进入视频播放页面"]);
      }
    },
    async firstRun() {
      fk.addGlobalStyle();
      let lastUrl = location.href;
      setInterval(async () => {
        if (lastUrl != location.href) {
          lastUrl = location.href;
          fk.runByUrl(location.href);
        }
      }, 500);
      fk.runByUrl(location.href);
    },
  });

  fk.firstRun();
  if (!unsafeWindow.fk) unsafeWindow.fk = fk;
})();