// ==UserScript==
// @name        视频学习
// @namespace    http://tampermonkey.net/
// @version      0.2
// @description   适用于：灯塔-干部网络学院
// @author       郭
// @match        https://gbwlxy.dtdjzx.gov.cn/content*
// @grant        none
// @downloadURL none
// ==/UserScript==

(function() {
    'use strict';
var video = null;
var istail = false;
var nextCourse = null;
function watch() {
    video = document.querySelector('video');
    if (!video) {
        showMsg('未发现视频');
        return
    }
    if (video.ended) {//播放完毕也是paused，拦截了
        showMsg('当前视频播放完毕');
        //playNext();
        return;
    }
    if (video.paused) {//开始播放
        showMsg('开始播放');
        video.muted = true;//chrome自动播放需静音
        video.play();
        video.addEventListener('ended', playNext);
        setTimeout(findNext,5000);
        return
    }
    //正常播放
    showMsg('播放中...')
    return
}
function playNext() {
    if (nextCourse) {
        nextCourse.click();
    } else {
        showMsg('全部学习完毕');
    }
}
function findNext() {
    showMsg('寻找下一视频');
    const currentCourse = document.querySelector('div.suspended') &&
        document.querySelector('div.suspended').parentNode.parentNode;
    const courseList = Array.from(document.querySelectorAll('div.course-list-item'));
    if (courseList.includes(currentCourse)) {//在列表中
        if (courseList.at(-1) == currentCourse) {//最后一课
            istail = true;
            nextPage();
        } else {
            nextCourse = courseList[courseList.indexOf(currentCourse) + 1];
            showMsg('找到待播放视频');
        }
    } else if (istail) {//在上一页列表中
        istail = false;
        nextCourse = courseList[0];
        showMsg('找到待播放视频');
    } else {//不在列表中
        nextPage();//翻页
    }
}
function nextPage() {
    const nextBtn = document.querySelector('.ztCourceList-wrap .right button');//下一页按钮
    if (nextBtn.disabled) {
        nextCourse = null;
        showMsg('最后一个视频');
    } else {
        console.log('翻下一页')
        nextBtn.click();
        setTimeout(findNext, 1000);//加载需要延迟
    }
}


function showMsg(msg = '') {
    console.info(msg);
    //设置显示面板
    const msgpan=document.querySelector('div.right-fixed-wrap>span');
    msgpan.setAttribute('style','color:red;background:yellow;');
    msgpan.textContent=msg;
}

const timerId = setInterval(watch, 3000);





})();