// ==UserScript==
// @name         超星学习通考试助手
// @namespace    speedBoy
// @version      0.0.1
// @description  自动作答学习通考试
// @author       speedBoy
// @run-at       document-end
// @storageName  speedBoy
// @match        *://*.chaoxing.com/exam-ans/exam/test/reVersionTestStartNew*
// @match        *://*.chaoxing.com/exam-ans/mooc2/exam/preview*
// @match        *://*.chaoxing.com/exam/test/reVersionTestStartNew*
// @match        *://*.edu.cn/exam-ans/exam/test/reVersionTestStartNew*
// @match        *://*.edu.cn/exam/exam-ans/mooc2/exam/preview*
// @match        *://*.edu.cn/exam/test/reVersionTestStartNew*
// @match        *://*.nbdlib.cn/exam-ans/exam/test/reVersionTestStartNew*
// @match        *://*.nbdlib.cn/exam/exam-ans/mooc2/exam/preview*
// @match        *://*.nbdlib.cn/exam/test/reVersionTestStartNew*
// @match        *://*.hnsyu.net/exam-ans/exam/test/reVersionTestStartNew*
// @match        *://*.hnsyu.net/exam/exam-ans/mooc2/exam/preview*
// @match        *://*.hnsyu.net/exam/test/reVersionTestStartNew*
// @icon         http://pan-yz.chaoxing.com/favicon.ico
// @grant        unsafeWindow
// @grant        GM_xmlhttpRequest
// @connect      cx.icodef.com
// @license      GPL-3.0-or-later
// ==/UserScript==
(()=>{
    var token = '';//关注微信公众号：一之哥哥，发送 “token” 领取你的token，填写在两个单引号中间并保存，可以提高答题并发数量。
    var _w = unsafeWindow,
        _d = _w.document,
        _l = _w.location,
        _h = _l.href,
        _s = Object.fromEntries(new URLSearchParams(_l.search)),
        _c = name => `; ${_d.cookie}`.split(`; ${name}=`).pop().split(';').shift(),
        _n = function(min,max){
            if(arguments.length==1){
                max = min+1;
                if(min>1){
                    min = min-1
                }
            }else if(arguments.length==0){
                min = 4;
                max = 6;
            }
            return parseInt(Math.random()*(max-min+1)+min,10)*1000; 
        };
    const courseId = _s['courseid']||_s['courseId'],
        classId = _s['classid']||_s['classId']||_s['clazzId']||_s['clazzid'],
        types = {'0':'单选题','1':'多选题','2':'填空题','3':'判断题','4':'简答题','5':'名词解释题','6':'论述题','7':'计算题','8':'其它','9':'分录题','10':'资料题','11':'连线题'};
    if(_h.includes('reVersionTestStartNew')){
        if(_s['newMooc']!='true'){
            _l.href = _h+'&newMooc=true';
            return;
        }
        setInterval(function(){
            if(typeof _w.topreview == 'function'){
                _w.topreview();
            }
        },_n(3));
        return;
    }else if(_h.includes('mooc2/exam/preview')){
        setInterval(function(){
            for(let s of document.getElementsByClassName('mask_div')){
                s.remove();
            }
        },1000);
        let questionsElements = _d.getElementsByClassName('questionLi');
        var questionNum = questionsElements.length,
            finishdQuestionNum = 0,
            leftQuestionNum = questionNum,
            paperId = _d.getElementById('testPaperId').getAttribute('value'),
            waitTime = _n(1,3),
            lastClick = new Date().getTime(),
            busyThread = 0,
            updateStatus = ()=>{
                let msg = '交卷';
                msg+='(正确率:'+(Math.floor(finishdQuestionNum/questionNum*100))+'%)';
                try{
                    if(leftQuestionNum==0){
                        msg+=' 作答完成';
                    }
                }catch(e){}
                _d.getElementsByClassName('completeBtn')[0].innerHTML = msg;
                _d.getElementsByClassName('completeBtn')[0].setAttribute('style','width:200px;');
            },
            timeClick = (optionE)=>{
                if(new Date().getTime()-lastClick<200){
                    setTimeout(function(){
                        timeClick(optionE);
                    },_n(0.1,0.3))
                }else{
                    lastClick = new Date().getTime();
                    optionE.click();
                }
            },
            ctCallback = function(question,status,res){
                busyThread--;
                leftQuestionNum--;
                try{
                    _d.getElementById('answerSheet'+question['questionId']).click();
                }catch(e){}
                if(status){
                    let hasAnswer = false;
                    try{
                        var responseText = res.responseText,
                            ctResult = JSON.parse(responseText);
                    }catch(e){
                        console.log(e);
                        return;
                    }
                    if (ctResult['code'] == -1){
                        console.log(question['tm']+'：未找到答案');
                    }
                    let answer = ctResult['data'],
                        optionsElements = _d.getElementsByClassName('choice'+question['questionId']);
                    for(let optionE of optionsElements){
                        let option = optionE.nextElementSibling.innerHTML.replace(/(<([^>]+)>)/ig, '').replace(/^\s+|\s+$/ig,'');
                        if(question['questionType']<2){
                            if(option.includes(answer)||answer.includes(option)){
                                hasAnswer = true;
                                console.log(question['tm']+'：'+answer);
                                if(!optionE.getAttribute('class').includes('check_answer')){
                                    timeClick(optionE);
                                }
                            }else{
                                if(optionE.getAttribute('class').includes('check_answer')){
                                    timeClick(optionE);
                                }
                            }
                        }else if(question['questionType']==3){
                            if('正确是对√Tri错误否错×Fwr'.includes(answer)){
                                hasAnswer = true;
                                console.log(question['tm']+'：'+answer);
                                if(('正确是对√Tri'.includes(answer)&&option.includes('对'))||('错误否错×Fwr'.includes(answer)&&option.includes('错'))){
                                    if(!optionE.getAttribute('class').includes('check_answer')){
                                        optionE.click();
                                    }
                                }
                            }else{
                                console.log(question['tm']+'：未找到答案');
                            }
                        }else{
                            console.log(question['tm']+'：暂不支持的题型');
                        }
                    }
                    if(hasAnswer){
                        finishdQuestionNum++;
                    }
                    updateStatus();
                }else{
                    console.log(question['tm']+'：查题失败');
                }
            }
        for(let questionElement of questionsElements){
            let questionId = questionElement.getAttribute('data')||_d.getElementsByName('questionId'),
                questionType = _d.getElementsByName('type'+questionId)[0].getAttribute('value'),
                tm = questionElement.getElementsByClassName('mark_name')[0].innerHTML.replace(/(<([^>]+)>)/ig, '').replaceAll('&nbsp;',' ').replace(/\d+\.\s*\((.*?),\s\d+\.?\d*分\)\s+/ig,'');
            waitTime += _n(4,6);
            setTimeout(function(){
                let question = {'tm':tm,'questionId':questionId,'questionType':questionType};
                busyThread++;
                GM_xmlhttpRequest({
                    method: 'POST',
                    url: 'https://cx.icodef.com/wyn-nb?v=4',
                    headers: {
                        'Content-type': 'application/x-www-form-urlencoded',
                        'Authorization': token,
                    },
                    data: 'question=' + encodeURIComponent(tm) + '&type=' + questionType + '&id=' + paperId,
                    timeout: 2000,
                    onload: function(res){
                        ctCallback(question,true,res);
                    },
                    ontimeout:function(){
                        ctCallback(question,false);
                    },
                    onerror: function() {
                        ctCallback(question,false);
                    },
                });
            },waitTime);
        }
    }
})();