// ==UserScript==
// @name         国家中小学智慧教育平台刷课脚本（16倍速，自动答题，自动切换列表中的视频，后台播放，学时不更新的解决方法看下面）
// @namespace    http://tampermonkey.net/
// @version      1.6
// @license      CC BY-NC-SA
// @description  16倍速，自动答题，自动切换列表中的视频，后台播放，学时不更新的解决方法看下面
// @author       HGGshiwo
// @match        https://*.zxx.edu.cn/teacherTraining/courseDetail*
// @match        https://basic.smartedu.cn/teacherTraining/courseDetail*
// @icon         data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
// @grant        none
// @downloadURL none
// ==/UserScript==

(function () {
  "use strict";
  // function
  const sleep = async (time) => {
    var p = new Promise((resolve, reject) => {
      setTimeout(() => {
        resolve();
      }, time);
    });
    return p;
  };

  const getActiveVideoAndPlay = async () => {
    await sleep(1000);

    //获取当前视频位置
    try {
      var groups = document.getElementsByClassName("fish-collapse-item");
      var groupNo = [...groups].findIndex((item) => {
        return item.className.includes("active");
      });
      var base = location.hostname.includes("basic")
        ? document
        : groups[groupNo];
      var resItems = base.getElementsByClassName("resource-item");
      var resNo = [...resItems].findIndex((item) => {
        return item.className.includes("active");
      });
    } catch (e) {
      console.log(666, e);
      getActiveVideoAndPlay();
      return;
    }

    console.log(666, `开始观看: 第${resNo + 1}个视频，第${groupNo + 1}组`);
    try {
      var vid = document.getElementsByTagName("video")[0];
      vid.muted = true;
      vid.play();
      vid.playbackRate = 16;

      vid.addEventListener(
        "ended",
        async () => {
          await sleep(1000);
          //计算下一个视频的位置
          if (resNo + 1 == resItems.length) {
            //看完了当前组
            if (groupNo + 1 == groups.length) {
              console.log(666, "看完了所有组, 退出");
            } else {
              //观看下一组
              console.log(666, `点击下一组的第一个视频`);
              document
                .getElementsByClassName("fish-collapse-header")
                [groupNo + 1].click();
              await sleep(1000);
              resItems =
                groups[groupNo + 1].getElementsByClassName("resource-item");
              resItems[0].click();
              getActiveVideoAndPlay();
            }
          } else {
            //观看当前组的下一个视频
            resItems[resNo + 1].click();
            console.log(666, `点击当前组的下一个视频`);
            getActiveVideoAndPlay();
          }
        },
        false
      );

      vid.addEventListener("pause", async () => {
        if (document.hidden) {
          vid.play(); //因为页面隐藏而暂停，则直接播放
          return;
        }
      });
    } catch (e) {
      console.log(666, e);
      getActiveVideoAndPlay(); //获取不到视频，再次调用
    }
  };

  if (confirm("开始运行脚本吗?")) {
    console.log(666, "刷课脚本开始运行");

    setInterval(() => {
      var options = document.getElementsByClassName("nqti-option");
      if (options.length) {
        options[0].click();
      }
      var btnWapper = document.getElementsByClassName(
        "index-module_markerExercise_KM5bU"
      );
      if (btnWapper.length) {
        var btns = btnWapper[0].getElementsByClassName("fish-btn");
        if (btns.length) {
          btns[0].click();
        }
      }
      var confirmBtns = document.getElementsByClassName(
        "fish-modal-confirm-btns"
      );
      if (confirmBtns.length) {
        confirmBtns[0].getElementsByClassName("fish-btn")[0].click();
      }
    }, 1000);

    getActiveVideoAndPlay();
  }
})();