// ==UserScript==
// @name         🌳🌳智慧树|知到网课小助手【支持最新版本】【2022年更新】【可以设置挂机时长，到时间自动提醒，自动播放下一个视频】【支持智慧树/知到考试、作业】【全网最全题库，永久免费，安全使用]
// @namespace    shushoujiu
// @version      2.0.0
// @description  🌳🌳智慧树|知到网课小助手。支持以下功能：1、智慧树/知到视频挂机[可以设置挂机时长，到时间自动提醒，自动播放下一个视频]。2、智慧树/知到测验答题[自动搜索相关题目]。3、智慧树/知到考试作答[自动搜索相关题目，并且进行选择]
// @author       shushoujiu
// @match        *://*.zhihuishu.com/*
// @connect      cx.icodef.com
// @run-at       document-end
// @grant        unsafeWindow
// @grant        GM_xmlhttpRequest
// @grant        GM_addStyle
// @grant        GM_getResourceText
// @grant        GM_setClipboard
// @grant        GM_setValue
// @resource css https://unpkg.com/bootstrap@3.3.7/dist/css/bootstrap.min.css
// @license      MIT
// @original-script https://greasyfork.org/scripts/380506
// @original-author wyn665817
// @original-license MIT
// @downloadURL none
// ==/UserScript==

// 设置修改后，需要刷新或重新打开网课页面才会生效
var setting = {
    // 5E3 == 5000，科学记数法，表示毫秒数
    time: 5E3 // 默认响应速度为5秒，不建议小于3秒

    // 1代表开启，0代表关闭
    ,video: 0 // 视频支持课程、见面课，默认关闭
    ,work: 1 // 自动答题功能，支持章测试、考试，高准确率，默认开启
    ,jump: 0 // 自动切换视频，支持课程、见面课，默认关闭
    ,habit: '0' // 限制共享课视频挂机时长，单位是分钟，如需挂机习惯分，可以修改参数为'30'，默认不限制

    // 仅开启video时，修改此处才会生效
    ,line: '流畅' // 视频播放的默认线路，可选参数：['高清', '流畅', '校内']，默认'流畅'
    ,vol: '0' // 默认音量的百分数，设定范围：[0,100]，'0'为静音，默认'0'
    ,speed: '1.5' // 进度统计速率，高倍率可以快速完成任务点，设定范围：(0,+∞)，默认'1.5'倍
    // 上方参数支持在页面改动，下方参数仅支持代码处修改
    ,que: 0 // 屏蔽视频时间点对应的节试题，取消屏蔽则自动切换为模拟点击关闭弹题，默认关闭
    ,danmu: 0 // 见面课弹幕，关闭后在网页中无法手动开启，默认关闭

    // 仅开启work时，修改此处才会生效
    ,none: 0 // 无匹配答案时执行默认操作，默认关闭
    ,hide: 0 // 不加载答案搜索提示框，键盘↑和↓可以临时移除和加载，默认关闭
    ,api: [{'url':'http://cx.icodef.com/wyn-nb?v=3','method':'POST'}]
},
    _self = unsafeWindow,
    url = location.pathname,
    $ = _self.jQuery,
    vjsC = _self.vjsComponent;
GM_addStyle(GM_getResourceText("css"));

String.prototype.toCDB = function() {
    return this.replace(/\s/g, '').replace(/[\uff01-\uff5e]/g, function(str) {
        return String.fromCharCode(str.charCodeAt(0) - 65248);
    }).replace(/[“”]/g, '"').replace(/[‘’]/g, "'").replace(/。/g, '.');
};

// setting.time += Math.ceil(setting.time * Math.random()) - setting.time / 2;
setting.queue = setting.curs = [];

if (!$) {
} else if (url == '/live/vod_room.html') {
    courseFn(0);
} else if (url == '/videoStudy.html') {
    var xhr = _self.XMLHttpRequest.prototype;
    courseFn(1, xhr.open, setting.habit * 6E4);
} else if (url == '/portals_h5/2clearning.html') {
    courseFn(2);
} else if (url.match('/sourceLearning')) {
    courseFn(3);
} else if (location.hostname.match('examh5')) {
    setTimeout(relieveLimit, 100, document);
    if (location.hash.match(/dohomework|doexamination/) && setting.work) beforeFind();
    $(window).on('hashchange', function() {
        setting.work && location.reload();
    });
} else if (url == '/shareCourse/questionDetailPage') {
    setTimeout(relieveLimit, 100, document);
    $('textarea[oncut]').each(function() {
        setTimeout(relieveLimit, 100, this);
    });
}

function courseFn(tip, open, habit) {
    setting.jump && setInterval(checkToNext, setting.time);
    habit && setTimeout(totalTime, setting.time, habit);
    if (!setting.video) return;
    // _self.PlayerUtil.debugMode = true;
    setting.tip = tip;
    _self.vjsComponent = vjsComponent;
    $(document).on('click', '.definiLines b', function() {
        setting.line = ({xiaonei: '校内', line1gq: '高清', line1bq: '流畅'})[this.classList[0]];
    }).on('mouseup click', function() {
        if (!_self.PlayerStarter.playerArray[0]) return;
        setting.vol = _self.PlayerStarter.playerArray[0].player.cache_.volume * 100;
    }).on('click', '.speedList div', function() {
        setting.speed = $(this).attr('rate');
    });
    if (setting.tip != 1) return;
    setting.que ? xhr.open = function(type, url, async) {
        if (url.match('/loadVideoPointerInfo')) type = 'GET';
        return open.call(this, type, url, async);
    } : setInterval(doTest, 1E3);
}

function vjsComponent(obj) {
    var options = obj.options,
        line = $.map(options.sourceSrc.lines, function(value) {
            return value.lineName.replace('标准', '高清');
        }),
        vol = setting.vol > 100 ? 100 : Math.round(setting.vol);
    options.volume = vol > 0 ? vol / 100 : 0;
    options.autostart = true;
    setting.speed = setting.speed > 0 ? +setting.speed : 1;
    options.rate = $.inArray(setting.speed, [1, 1.25, 1.5]) < 0 ? options.rate : setting.speed;
    setting.tip && obj.callback.playbackRate(setting.speed);
    options.chooseLine = $.inArray(setting.line, line) + 1 || options.chooseLine + 1;
    options.src = options.sourceSrc.lines[--options.chooseLine].lineUrl || options.src;
    if (!setting.danmu) {
        obj.defOptions.control.danmuBtn = false;
        delete options.control.danmuBtn;
    }
    obj.player.on('loadstart', function() {
        this.loop(true);
        this.play();
        $('.speedBox span').text('X ' + setting.speed);
    });
    vjsC.call(this, obj);
}

function totalTime(habit) {
    var obj = _self.PlayerStarter.playerArray[0];
    if (obj) habit -= obj.player.paused() ? 0 : setting.time;
    if (habit >= 0) return setTimeout(totalTime, setting.time, habit);
    obj.player.pause();
    var $tips = $('.dialog-tips').eq(0).clone().css('z-index', 3000).appendTo('.video-study').show(),
        html = '<div class="el-dialog__title" style="margin-top: 45px; text-align: center; color: red;">已达到挂机限制时间</div>';
    $tips.find('.el-dialog__title').text('智慧树网课助手提示').next().remove();
    $tips.find('.el-dialog__footer').before(html).find('button').click(function() {
        $tips.remove();
    }).find('span').text('明白了');
}

function checkToNext() {
    if (setting.habit < 0) return;
    var $tip = $('.video, .lessonItem, .file-item');
    if ($('.current_play .time_icofinish').length) {
        $tip.slice($tip.index($('.current_play')) + 1).not(':has(.time_icofinish)').eq(0).click();
    } else if ($('.lessonItemActive .finish').length) {
        // _self.PlayerStarter.playerArray[0].callback.playerNext();
        $tip.slice($tip.index($('.lessonItemActive')) + 1).not(':has(.finish)').eq(0).click();
    } else if (url.match('vod_room')) {
        $('.current_player:contains("100%") + li').click();
        // $('.finish_tishi').hasClass('disNo') || console.log('签到已完成');
    } else if ($('.active .icon-finish').length) {
        $tip.slice($tip.index($('.active')) + 1).not(':has(.icon-finish)').eq(0).click();
    }
}

function doTest() {
    if (!$('.dialog-test').length) {
    } else if (setting.queue.length) {
        $(setting.queue.shift()).parent().click();
    } else if (!$('.item-topic.active').length) {
        $('.topic-item').eq(0).click();
    } else if ($('.error').length) {
        var tip = $('.answer span').text().match(/[A-Z]/g) || [];
        if (tip.length == 1) return $('.topic-option-item:contains(' + tip[0] + ')').click();
        $('.topic-option-item').each(function() {
            $.inArray($(this).text().slice(0, 1), tip) < 0 == $(this).hasClass('active') && setting.queue.push(this);
        });
    } else if ($('.btn-next:enabled').length) {
        $('.btn-next:enabled').click();
    } else {
        $('.dialog-test .btn').click();
        _self.PlayerStarter.playerArray[0].player.play();
    }
}

function relieveLimit(doc) {
    if (!doc.oncut && !doc.onselectstart) return setTimeout(relieveLimit, 100, doc);
    doc.oncontextmenu = doc.onpaste = doc.oncopy = doc.oncut = doc.onselectstart = null;
}

function beforeFind() {
    setting.div = $(
        '<div class="jumbotron" style="border: 2px solid rgb(0, 0, 0); margin:5px; padding: 20px 20px 10px 20px;  width: 500px; position: fixed; top: 0; left: 0; z-index: 99999; background-color: ; overflow-x: auto;">' +
        '<span style="font-size: medium;"></span>' +
        '<div class="label-success" style="width:200px"><h3>正在搜索答案...<h3></div>' +
        '<button class="btn btn-primary" style="width:80px; height:35px;margin-right: 10px;">暂停答题</button>' +
        '<button class="btn btn-primary" style="margin-right: 10px;">重新查询</button>' +
        '<button class="btn btn-primary" style="margin-right: 10px;">折叠面板</button>' +
        '<button class="btn btn-primary" style="margin-top: 10px;display: none;">未作答题目</button>' +
        '<form style="margin: 2px 0;">' +
        '<h4><label class="label label-warning" >自定义答题范围：</label><h4>' +
        '<input class="form-control" name="num" type="number" min="1" placeholder="开始" style="width: 80px;" disabled>' +
        '<span> 　 </span> ' +
        '<input class="form-control" name="max" type="number" min="1" placeholder="结束" style="width: 80px;" disabled>' +
        '</form>' +
        '<div style="max-height: 300px; overflow-y: auto;">' +
        '<table  class="table table-striped" style="font-size: 12px;">' +
        '<thead>' +
        '<tr>' +
        '<th style="width: 30px; min-width: 30px; font-weight: bold; text-align: center;">题号</th>' +
        '<th style="width: 60%; min-width: 130px; font-weight: bold; text-align: center;">题目（点击可复制）</th>' +
        '<th style="min-width: 130px; font-weight: bold; text-align: center;">答案（点击可复制）</th>' +
        '</tr>' +
        '</thead>' +
        '<tfoot style="display: none;">' +
        '<tr>' +
        '<th colspan="3" style="font-weight: bold; text-align: center;">答案提示框 已折叠</th>' +
        '</tr>' +
        '</tfoot>' +
        '<tbody>' +
        '<tr>' +
        '<td colspan="3" style="display: none;"></td>' +
        '</tr>' +
        '</tbody>' +
        '</table>' +
        '</div>' +
        '</div>'
    ).appendTo('body').on('click', 'button, td', function() {
        var len = $(this).prevAll('button').length;
        if (this.nodeName == 'TD') {
            $(this).prev().length && GM_setClipboard($(this).text());
        } else if (len === 0) {
            if (setting.loop) {
                clearInterval(setting.loop);
                delete setting.loop;
                len = [false, '<h3>已赞停搜索<h3>', '继续答题'];
            } else {
                setting.loop = setInterval(findAnswer, setting.time);
                len = [true, '<h3>正在搜索答案...<h3>', '暂停答题'];
            }
            setting.div.find('input').attr('disabled', len[0]);
            setting.div.children('div:eq(0)').html(function() {
                return $(this).data('html') || len[1];
            }).removeData('html');
            $(this).html(len[2]);
        } else if (len == 1) {
            location.reload();
        } else if (len == 2) {
            setting.div.find('tbody, tfoot').toggle();
        } else if (len == 3) {
            var $li = $('.el-scrollbar__wrap li'),
                $tip = $li.filter('.white, .yellow').eq(0);
            $tip.click().length ? setting.div.children('div:last').scrollTop(function() {
                var $tr = $('tbody tr', this).has('td:nth-child(1):contains(' + $tip.text() + ')');
                if (!$tr.length) return arguments[1];
                return $tr.offset().top - $tr.parents('table').offset().top; // $tr[0].offsetTop
            }) : $(this).hide();
        }
    }).on('change', 'input', function() {
        setting[this.name] = this.value.match(/^\d+$/) ? parseInt(this.value) - 1 : -1;
        if (!this.value) setting[this.name] = this.name == 'num' ? 0 : undefined;
    }).detach(setting.hide ? '*' : 'html');
    setting.type = {
        单选题: 1,
        多选题: 2,
        填空题: 3,
        问答题: 4,
        '分析题/解答题/计算题/证明题': 5,
        '阅读理解（选择）/完型填空': 9,
        判断题: 14
    };
    setting.lose = setting.num = setting.small = 0;
    $(document).keydown(function(event) {
        if (event.keyCode == 38) {
            setting.div.detach();
        } else if (event.keyCode == 40) {
            setting.div.appendTo('body');
        }
    });
    // 作业考试文本破解
    unsafeWindow.Element.prototype.attachShadow = undefined;
    setting.loop = setInterval(findAnswer, setting.time, true);
    setInterval(function() {
        $(setting.queue.shift()).parent().click();
    }, 1E3);
}

function findAnswer(tip) {
    if (setting.queue.length) {
        return;
    } else if (tip && !$('.answerCard').length) {
        return setting.div.children('div:eq(0)').data('html', '非自动答题页面').siblings('button:eq(0)').click();
    } else if (setting.max < 0 || setting.num < 0) {
        return setting.div.children('div:eq(0)').data('html', '范围参数应为 <font color="red">正整数</font>').siblings('button:eq(0)').click();
    } else if (setting.num >= $('.subject_stem').length || setting.num > setting.max) {
        // setting.div.children('button:eq(3)').toggle(!!setting.lose);
        tip = setting.lose ? '<h4>共有 <font color="red">' + setting.lose + '</font> 道题目未完成<h4>' : '<h3>答题已完成<h3>';
        return setting.div.children('div:eq(0)').data('html', tip).siblings('button:eq(0), form').hide().click();
    } else if (!setting.curs.length) {
        setting.curs = $('.infoList span').map(function() {
            return $(this).text().trim();
        });
        if (!setting.curs.length) return;
    }
    var $TiMu = $('.subject_stem').eq(setting.num).parent(),
        $dom = $TiMu.find('.smallStem_describe').eq(setting.small).children('div').slice(1, -1),
        question = filterStyle($dom) || filterStyle($TiMu.find('.subject_describe')),
        type = $TiMu.find('.subject_type').text().match(/【(.+)】|$/)[1];
    type = type ? setting.type[type] || 0 : -1;
    GM_xmlhttpRequest({
        method: setting.api[0].method,
        url: setting.api[0].url,
        headers: {
            'Content-type': 'application/x-www-form-urlencoded'
        },
        data: 'question=' + encodeURIComponent(question),
        timeout: setting.time,
        onload: function(xhr) {
            if (!setting.loop) {
            } else if (xhr.status == 200) {
                var obj = $.parseJSON(xhr.responseText.replace(/^操作数据失败！/,'')) || {};
                obj.answer = obj.data;
                if (obj.code) {
                    setting.div.children('div:eq(0)').html('<h3>正在搜索答案...<h3>');
                    var answer = obj.answer.replace(/&/g, '&amp;').replace(/<([^i])/g, '&lt;$1');
                    obj.answer = /^http/.test(answer) ? '<img src="' + obj.answer + '">' : obj.answer;
                    $(
                        '<tr>' +
                        '<td style="text-align: center;">' + $TiMu.find('.subject_num').text().trim().replace('.', '') + '</td>' +
                        '<td title="点击可复制">' + (question.match('<img') ? question : question.replace(/&/g, '&amp;').replace(/</g, '&lt')) + '</td>' +
                        '<td title="点击可复制">' + (/^http/.test(answer) ? obj.answer : '') + answer + '</td>' +
                        '</tr>'
                    ).appendTo(setting.div.find('tbody')).css('background-color', function() {
                        $dom = $dom.length ? $dom.closest('.examPaper_subject') : $TiMu;
                        if (fillAnswer($dom, obj, type)) return '';
                        setting.div.children('button:eq(3)').show();
                        return 'rgba(0, 150, 136, 0.6)';
                    });
                    setting.small = ++setting.small < $TiMu.find('.smallStem_describe').length ? setting.small : (setting.num++, 0);
                } else {
                    setting.div.children('div:eq(0)').html(obj.answer || '<h3>扫码题库更全<img src="https://cdn.fm210.cn/img/huoxin.png" style="width:200px;" class="img-thumbnail"><h3>');
                }
                setting.div.children('span').html('<h3>扫码题库更全<img src="https://cdn.fm210.cn/img/huoxin.png" style="width:200px;" class="img-thumbnail"><h3>');
            } else if (xhr.status == 403) {
                var html = xhr.responseText.indexOf('{') ? '<img src="https://cdn.fm210.cn/img/huoxin.png" class="img-thumbnail">' : $.parseJSON(xhr.responseText).answer;
                setting.div.children('div:eq(0)').data('html', html).siblings('button:eq(0)').click();
            } else {
                setting.div.children('div:eq(0)').html('<h3>扫码题库更全<img src="https://cdn.fm210.cn/img/huoxin.png" style="width:200px;" class="img-thumbnail"><h3>');
            }
        },
        ontimeout: function() {
            setting.loop && setting.div.children('div:eq(0)').html('<h3>扫码题库更全<img src="https://cdn.fm210.cn/img/huoxin.png" style="width:200px;" class="img-thumbnail"><h3>');
        }
    });

}

function fillAnswer($TiMu, obj, type) {
    var $div = $TiMu.find('.nodeLab'),
        str = String(obj.data).toCDB() || new Date().toString(),
        data = str.split(/#|\x01|\|/),
        state = setting.lose;
    // $div.find(':radio:checked').prop('checked', false);
    obj.code > 0 && $div.each(function() {
        var $input = $('input', this)[0],
            tip = filterStyle('.node_detail', this).toCDB() || new Date().toString();
        if (tip.match(/^(正确|是|对|√|T|ri)$/)) {
            data.join().match(/(^|,)(正确|是|对|√|T|ri|right|true)(,|$)/) && setting.queue.push($input);
        } else if (tip.match(/^(错误|否|错|×|F|wr)$/)) {
            data.join().match(/(^|,)(错误|否|错|×|F|wr|wrong|false)(,|$)/) && setting.queue.push($input);
        } else if (type == 2) {
            Boolean($.inArray(tip, data) + 1 || str.indexOf(tip) + 1) == $input.checked || setting.queue.push($input);
        } else {
            $.inArray(tip, data) + 1 && setting.queue.push($input);
        }
    });
    if (setting.queue.length) {
    } else if (/^(1|2|14)$/.test(type)) {
        var $input = $div.find('input');
        $input.is(':checked') || (setting.none ? setting.queue.push($input[Math.floor(Math.random() * $input.length)]) : setting.lose++);
    } else if (/^[3-5]$/.test(type)) {
        data = String(obj.data).split(/#|\x01|\|/);
        str = $TiMu.find('textarea').each(function(index) {
            index = (obj.code > 0 && data[index]) || this.value || '';
            this.value = index.trim();
            // if (this.value == this._value) return true;
            this.dispatchEvent(new Event('input'));
            this.dispatchEvent(new Event('blur'));
        }).length;
        (obj.code > 0 && data.length == str) || setting.none || setting.lose++;
    } else {
        setting.none || setting.lose++;
    }
    return state == setting.lose;
}

function filterStyle(dom, that) {
    var $dom = $(dom, that).clone().find('style').remove().end();
    return $dom.find('img[src]').replaceWith(function() {
        return $('<p></p>').text('<img src="' + $(this).attr('src') + '">');
    }).end().text().trim();
}