// ==UserScript==
// @name         超星学习通教师后台加强
// @namespace    http://teachroot.com/
// @version      0.14
// @description  针对超星学习通教师后台一些功能进行了优化,方便判卷.
// @require      https://cdn.staticfile.org/jquery-cookie/1.4.1/jquery.cookie.min.js
// @author       辽经职院 冯涛
// @match        https://mooc1-1.chaoxing.com/work/*
// @match        https://mooc1-1.chaoxing.com/scoreAnalysis/toSetWeights*
// @match        https://mooc1-1.chaoxing.com/moocAnalysis/analysisScore*
// @grant        none
// @run-at document-end
// @downloadURL none
// ==/UserScript==

(function() {
    'use strict';

    //作业|主观题判卷 自动填写满分
    if(window.location.pathname=='/work/selectWorkQuestionYiPiYue' || window.location.pathname=='/work/reviewTheContentNew'){
        let scoreText=$('span[style="line-height: 2;"]') //题目分值：100.0 分
        let stuname=$('img.headimages.fl').next().children('i').text() //学生姓名
        let nameSpaceText=scoreText.next().html();
        scoreText.next().html( nameSpaceText.replace("打分","给<span style='font-weight:bold'>" + stuname + "</span>打分") )
        let score=scoreText.text().substring(scoreText.text().indexOf("：")+1,scoreText.text().indexOf(" 分"));
        $("input[placeholder='0-100.0']").val(score);
        $("#tmpscore").val(score);
    }

    // 统计|成绩管理|权重设置 自动合分
    if(window.location.pathname=='/scoreAnalysis/toSetWeights'){
        scoresum()
    }

    // 统计|成绩管理|成绩统计 自动列分数段
    if(window.location.pathname=='/moocAnalysis/analysisScore'){
        let Excellent=$('<td style="background-color:#FFCCCC"></td>')
        let Good=$('<td></td>')
        let Average=$('<td></td>')
        let Pass=$('<td></td>')
        let Fail=$('<td style="background-color:#FFFFCC"></td>')
        let StuCounts=$('<td></td>')
        let StuAverage=$('<td></td>')
        let StuVariance=$('<td></td>')
        let tr=$('<tr></tr>')
        tr.append(Excellent)
        tr.append(Good)
        tr.append(Average)
        tr.append(Pass)
        tr.append(Fail)
        tr.append(StuCounts)
        tr.append(StuAverage)
        tr.append(StuVariance)

        let scoreGrade=$('<table border="1" style="border-collapse:collapse;margin-top:5px; border: 1px solid rgb(69, 238, 69);width:500px; "><tr><th style="background-color:#FFCCCC">优</th><th>良</th><th>中</th><th>及</th><th style="background-color:#FFFFCC">不及</th><th>总人数</th><th>平均分</th><th>标准差</th></tr></table>')
        scoreGrade.append(tr)
        $(".CyTopN").after(scoreGrade)
        $(".tablecon tbody").bind('DOMNodeInserted', function (e) {
            let scores=[] //成绩数组
            let scoreSum=0
            let excellen=0
            let good=0
            let average=0
            let pass=0
            let fail=0
            $(".borRightNone>span").each(function(){
                if(!isNaN(parseFloat($(this).text()))){
                    let score=parseFloat($(this).text())
                    scores.push(score)
                    scoreSum+=score
                    if(score>=90){
                        $(this).parent().parent().css("background-color","#FFCCCC")
                        excellen++
                    }
                    else if(score>=80){
                        good++
                    }
                    else if(score>=70){
                        average++
                    }
                    else if(score>=60){
                        pass++
                    }
                    else{
                        $(this).parent().parent().css("background-color","#FFFFCC")
                        fail++
                    }
                }
            });
            Excellent.text(excellen)  //优
            Good.text(good)           //良
            Average.text(average)     //中
            Pass.text(pass)           //及
            Fail.text(fail)           //不及
            let stuCounts=scores.length
            StuCounts.text(stuCounts) //人数
            let stuAverage=scoreSum/stuCounts
            StuAverage.text(stuAverage.toFixed(2) ) //平均分
            //就是用每个样本的分数减平均分，再求平方和，再除以样本容量，这个是方差。在开方就是标准差了
            //定义两个简单的函数
            var sum = function(x,y){ return x+y;};　　//求和函数
            var square = function(x){ return x*x;};　　//数组中每个元素求它的平方

            var data = [1,1,3,5,5];　　//
            var mean = data.reduce(sum)/data.length; //平均值
            var deviations = data.map(function(x){return x-mean;});//偏差
            var stddev = Math.sqrt(deviations.map(square).reduce(sum)/(data.length-1)); //标准差
            StuVariance.text(stddev)

        });

    }
})();

function scoresum(){
    let scoreBox=$('<div></div>')
    floatBox(100,80,'left',scoreBox)
    var sumtimer=setInterval(function(){
        let realWork= $("#realWork").val() // 作业
        let active= $("#active").val()  //课堂互动
        let attend = $("#attend").val()  //签到
        let video= $("#video").val()   //课程音视频
        let work = $("#work").val()   //章节测验
        let pbl = $("#pbl").val()   //PBL
        let onlineTime = $("#onlineTime").val() //章节学习次数
        let bbs= $("#bbs").val()  //讨论
        let readTime= $("#readTime").val()  //阅读
        let liveTime= $("#liveTime").val()  //直播
        let test = $("#test").val() //考试
        let offline= $("#offline").val()  //线下
        let sum= Number(realWork)+Number(active) + Number(attend)+ Number(video)+ Number(work)+Number(pbl) + Number(onlineTime)+Number(bbs) +Number(readTime) + Number(liveTime)+Number(test)+Number(offline)

        scoreBox.html('<h3 style="font-size:18px;">即时合分:</h3><h1 style="font-size:32px;">' + sum + '</h1>')
        if(sum>100){
            scoreBox.css("background-color","yellow")
        }
        else{
            scoreBox.css("background-color","transparent");
        }
    } , 500);
}

function floatBox(width,height,align,obj){
    $("#tailwindFloat").remove()
    var fudong= $('<div id="tailwindFloat" style="border:1px solid #45ee45; width:' + width + 'px; height:' + height + 'px; position: absolute; ' + align + ': 100px; top: 400px;"></div>')
    fudong.append(obj)
    var timer, scrollTop, sideDiv = fudong.appendTo('body');
    $(window).scroll(function() {
        timer && clearTimeout(timer);
        scrollTop = $(this).scrollTop();
        timer = setTimeout(function() {
            sideDiv.animate({
                top: scrollTop + 400 + 'px'
            }, 600);
        }, 200);
    });
}