// ==UserScript==
// @name         山东大众云学|如需自动下一集、自动换课程、考试答题等高级功能见收费版本：http://doc.zhanyc.cn/pages/dzyx/
// @namespace    free
// @version      1.0
// @description  当前是免费版本，只包含了视频进度检测和解除视频暂停限制功能。如需自动下一集、自动换课程、考试答题等高级功能可升级付费版本|接各类脚本开发、代挂任务，微信：zhanyc_cn 个人网站：http://doc.zhanyc.cn
// @include      *://*.yxlearning.com/*
// @grant        GM_addStyle
// @run-at       document-end
// @require      http://libs.baidu.com/jquery/2.0.0/jquery.min.js
// ==/UserScript==
(function () {
  let docUrl = "http://doc.zhanyc.cn/pages/dzyx/";
  let mqr = {
    pageData: {
      videoTimer: null,
      stuckCount: 0,
      lastTime: -1,
    },
    async init() {
      console.log("%c mqr init", "background:rgb(0,0,0);color:#fff");
      await mqr.waitPageLoad();
      mqr.createPanel();
      if (location.href.toLowerCase().includes("/learning/index?myclassid=")) {
        mqr.startVideoMonitor();
      }
    },
    startVideoMonitor() {
      if (mqr.pageData.videoTimer != null) return;
      mqr.updatePanelStatus("正在检测视频...", "#f1a325");
      mqr.pageData.videoTimer = setInterval(async () => {
        try {
          let video = mqr.getVideoEl();
          if (!video) return;
          let curTime = video.currentTime;
          let totalTime = video.duration;
          if (curTime > 0 && totalTime > 0) {
            let pct = Math.min((curTime / totalTime * 100), 100).toFixed(1);
            mqr.updatePanelProgress(curTime, totalTime, pct);
            mqr.updatePanelStatus("视频播放中", "#38b03f");
            video.volume = 0;
            if (video.paused) {
              try { video.play(); } catch (e) { }
              mqr.updatePanelStatus("已自动恢复播放", "#38b03f");
            }
            if (totalTime > 0 && curTime + 3 >= totalTime) {
              mqr.updatePanelStatus("视频即将播放完毕", "#ea644a");
            }
            if (curTime == mqr.pageData.lastTime) {
              mqr.pageData.stuckCount++;
              if (mqr.pageData.stuckCount > 60) {
                mqr.updatePanelStatus("视频疑似卡住，请检查", "#ea644a");
                mqr.pageData.stuckCount = 0;
              }
            } else {
              mqr.pageData.stuckCount = 0;
            }
            mqr.pageData.lastTime = curTime;
          }
        } catch (e) {
          console.error("视频检测出错", e);
        }
      }, 1000);
    },
    getVideoEl() {
      try {
        return $("video")[0];
      } catch (e) {
        return null;
      }
    },
    createPanel() {
      GM_addStyle(`
        #mqr_panel{position:fixed;left:10px;top:10px;z-index:2147483647;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);border-radius:8px;padding:12px 16px;min-width:280px;max-width:360px;color:#fff;font-family:microsoft yahei,sans-serif;box-shadow:0 4px 15px rgba(0,0,0,0.3);font-size:14px;line-height:1.6}
        #mqr_panel .mqr_title{font-size:16px;font-weight:bold;margin-bottom:8px;border-bottom:1px solid rgba(255,255,255,0.3);padding-bottom:6px}
        #mqr_panel .mqr_status{padding:4px 8px;border-radius:4px;margin:4px 0;font-weight:bold}
        #mqr_panel .mqr_progress{background:rgba(0,0,0,0.2);border-radius:4px;padding:8px;margin:6px 0}
        #mqr_panel .mqr_progress_bar{background:rgba(255,255,255,0.2);border-radius:3px;height:16px;overflow:hidden;margin:4px 0}
        #mqr_panel .mqr_progress_fill{background:linear-gradient(90deg,#00f260,#0575e6);height:100%;border-radius:3px;transition:width 0.5s ease;min-width:0}
        #mqr_panel .mqr_promo{margin-top:8px;padding-top:8px;border-top:1px solid rgba(255,255,255,0.3);font-size:12px}
        #mqr_panel .mqr_promo a{color:#ffd700;text-decoration:underline}
        #mqr_panel .mqr_close{position:absolute;top:4px;right:8px;background:none;border:none;color:#fff;font-size:18px;cursor:pointer;padding:0;line-height:1}
        #mqr_panel .mqr_close:hover{opacity:0.7}
      `);
      let panelHtml = `
        <div id="mqr_panel">
          <button class="mqr_close" id="mqr_closeBtn">&times;</button>
          <div class="mqr_title">山东大众云学 - 免费版</div>
          <div class="mqr_status" id="mqr_status" style="background:rgba(241,163,37,0.3);">等待检测视频...</div>
          <div class="mqr_progress" id="mqr_progressBox" style="display:none;">
            <div style="font-weight:bold;font-size:15px;">&#9654; 视频播放进度</div>
            <div class="mqr_progress_bar"><div class="mqr_progress_fill" id="mqr_progressFill" style="width:0%"></div></div>
            <div id="mqr_progressText" style="text-align:center;font-size:13px;">00:00:00 / 00:00:00 (0%)</div>
          </div>
          <div class="mqr_promo">
            <div>&#128293; <b>一次付费，永久使用，免费维护</b></div>
            <div>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：自动下一集、自动换课程、考试答题、全自动无人值守</div>
            <div>&#128073; <a href="${docUrl}" target="_blank">点击查看付费版本</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，微信：zhanyc_cn</div>
          </div>
        </div>
      `;
      $("body").append(panelHtml);
      $("#mqr_closeBtn").on("click", function () {
        $("#mqr_panel").remove();
      });
    },
    updatePanelStatus(text, color) {
      $("#mqr_status").text(text).css("background", color ? (color + "33") : "rgba(241,163,37,0.3)");
    },
    updatePanelProgress(curTime, totalTime, pct) {
      $("#mqr_progressBox").show();
      $("#mqr_progressFill").css("width", pct + "%");
      let curFmt = mqr.formatTime(curTime);
      let totalFmt = mqr.formatTime(totalTime);
      $("#mqr_progressText").text(curFmt + " / " + totalFmt + " (" + pct + "%)");
    },
    formatTime(seconds) {
      seconds = Math.floor(seconds);
      let h = Math.floor(seconds / 3600);
      let m = Math.floor((seconds % 3600) / 60);
      let s = seconds % 60;
      return (h < 10 ? "0" + h : h) + ":" + (m < 10 ? "0" + m : m) + ":" + (s < 10 ? "0" + s : s);
    },
    waitPageLoad() {
      return new Promise((resolve) => {
        let check = setInterval(() => {
          if ($("body").length > 0) {
            clearInterval(check);
            resolve();
          }
        }, 500);
      });
    },
  };
  setTimeout(() => {
    if (typeof (zfk) == 'undefined') {
      mqr.init();
    } else {
      console.log('skip init');
    }
  }, 3000);
})();