// ==UserScript==
// @name         yuncourse-1989
// @namespace    http://tampermonkey.net/
// @version      1.5
// @description  屏蔽云课堂挂机检测脚本
// @author       lingmao
// @match        *://*.yunxuetang.cn/*
// @icon         https://yunketang.cn/static/images/xsct-icon-5@2x-87dbb0b9f0.png
// @grant        none
// @license      MIT
// @downloadURL https://update.greasyfork.icu/scripts/458019/yuncourse-1989.user.js
// @updateURL https://update.greasyfork.icu/scripts/458019/yuncourse-1989.meta.js
// ==/UserScript==

(function() {
    'use strict';
    //TODO
    //1. 视频可以自动播放下一小节，文档不能自动播放下一小节
    // Your code here...
    var time=getTimes();
    var str = "display: none;";
    var str2 = "dialog-fade-leave";
    var play_btn = 0;var continue_to_learn = 0;var elem=0;var congratulate_str=0;
    let obj = {'autoplay':true,'muted':true};
    console.log('It\'s runing Now');
    var tm=setInterval(function(){
        var i=0;var j=0;var RootNode=0;var finishsign=0;var next_course=0;var next_course2=0;var begin_to_learn=0;var lesson_finish=0;var courses=0;var courses_length=0;var lesson_num=0;
        // 开始学习按钮
        // v1.0旧版
        // begin_to_learn = document.getElementsByClassName("kngpc-playbutton kngpc-playbutton__primary");
        // v2.0新版
        begin_to_learn = document.getElementsByClassName("yxtf-button yxtf-button--primary yxtf-button--larger");
        if(begin_to_learn!=0){
            if(begin_to_learn.length!=0){
                begin_to_learn[0].click();
            }
        }
        play_btn = document.querySelector('video');
        finishsign = document.getElementsByClassName("yxtulcdsdk-course-player__countdown standard-size-12 yxtulcdsdk-flex-center");
        // 旧版需要判断当前任务完成，关闭评价，点击下一任务
        // v2.0新版直接判断剩余时间，学习时间结束，点击下一任务
        if(finishsign.length==0){
            next_course = document.getElementsByClassName("yxtf-button ml12 yxtf-button--default is-plain is-icon")[0];
            next_course2 = document.getElementsByClassName("ulcdsdk-nextchapterbutton")[0];
            sleep(1000);
            next_course.click();
            sleep(1000);
            next_course2.click();
            sleep(1000);
            // 发现点击之后需要刷新，v1.1修复bug
            location.reload();
        }
        // 判断当前小节已完成，跳转到下一小节
        lesson_finish = document.getElementsByClassName("yxtbiz-language-slot");
        // 重新学习按钮不点击，不会显示完成进度。v1.4修复bug
        try{
            congratulate_str = document.getElementsByClassName("font-size-16 text-bf")[0].innerText;
        }
        catch(e){}
        // 获取所有小节元素
        courses = document.getElementsByClassName("d-in-block ellipsis-2 kng-chapter-title");
        courses_length = courses.length;
        if(lesson_finish.length===0){
            // 修复对课程完成的判断，小版本更新v1.3
            if(congratulate_str==='恭喜您已完成本课程的学习。'){
                console.log("lesson finished");
                lesson_num = get_current_lesson_num(courses);
                if(lesson_num+1<courses_length){
                    courses[lesson_num+1].click();
                }
                else{
                    //如果小节看完自动跳转到下一任务，小版本更新v1.2
                    next_course = document.getElementsByClassName("yxtf-button yxtf-button--primary")[0];
                    next_course.click();
                }
            }
        }
        elem=document.getElementsByClassName("yxt-dialog__wrapper");
        // v1.0旧版判断是否有“继续学习”按钮，点击后判断视频是否在播放状态，使视频播放
        // continue_to_learn = document.getElementsByClassName("yxtf-button mr8 yxtf-button--primary yxtf-button--larger2");
        // v2.0新版
        continue_to_learn = document.getElementsByClassName("yxtf-button yxtf-button--primary yxtf-button--large");
        // 点击“继续学习”按钮
        if(continue_to_learn[0]!=undefined){
            continue_to_learn[0].click();
        }
        // 使视频播放（添加属性，防止chrome报错），使用try...catch丢弃报错
        try{
            play_btn.setAttribute('autoplay','true');
            play_btn.setAttribute('muted','true');
            if(play_btn.paused){
                play_btn.play();
            }
        }
        catch(e){}

        // 循环找到挂机检测弹窗节点
        for (i = 0; i < elem.length; i++) {
            if(elem[i].attributes[2]!=undefined){
                if(elem[i].attributes[2].nodeValue.indexOf(str)==-1){
                    // 发现bug，添加一个判断
                    if(elem[i].attributes[1].nodeValue.indexOf(str2)==-1){
                        RootNode=elem[i];
                        console.log(RootNode);
                    }
                }
            }
        }
        if(RootNode===0){
            console.log("no alert. dialog-center display none.");
            return;
        }
        var btn=RootNode.getElementsByClassName("dialog-footer")[0];
        var center=document.getElementsByClassName("dialog-center");
        console.log("触发挂机弹窗");
        if(!btn){
            console.log("dialog-footer classname elements not found.");
            return;
        }
        var res=btn.innerText;
        console.log(res);
        if(res!="继续学习"){
            btn=document.getElementsByClassName("dialog-footer")[2];
        }
        console.log("点击继续学习");
        // 点击继续学习按钮
        btn.getElementsByClassName("yxtf-button yxtf-button--primary yxtf-button--large")[0].click();
    },time);
})();

function getTimes(){
    var times=Math.random()*8 + 1;//1-9
    times=5*1000*1;//+times*10
    return times
}

function get_current_lesson_num(courses){
    var courses_length=0;
    courses_length = courses.length;
    if(courses_length>0){
        for(var i=0;i<courses_length;i++){
            if(courses[i].className.indexOf("color-primary-6")!=-1){
                return i;
            }
        }
    }
    else{
        return 0;
    }
}

function sleep(time){
    return new Promise((resolve) => setTimeout(resolve, time));
}