// ==UserScript==
// @name         江苏开放大学自动刷课脚本
// @namespace    http://tampermonkey.net/
// @version      1.0
// @description  江苏开放大学相关视频自动学习自动看视频程序【可加速及自动下一页】，做题/实验实践/合作/教务处理等建议QQ群1：756253160 二群：949193546联系群主！
// @author       一心向善
// @match        http://xuexi.jsou.cn/jxpt-web/student/courseuser/courseVersionId=*
// @match        http://xuexi.jsou.cn/jxpt-web/student/activity/display?courseVersionId=*
// @match        http://xuexi.jsou.cn/jxpt-web/student/newHomework/showHomeworkByStatus?courseVersionId=*
// @grant        unsafeWindow
// @grant        GM_setValue
// @grant        GM_getValue
// @license      MIT
// ==/UserScript==

(function() {
    'use strict';

    var manualSelectRunning = false;
    var autoJumpRunning = false;
    var autoPlayEnabled = GM_getValue('autoPlayEnabled', true);
    var autoNextEnabled = GM_getValue('autoNextEnabled', true);
    var speedValue = GM_getValue('speedValue', 1.0);

    var manualSelectButton = null;
    var autoJumpButton = null;

    // 自动播放
    function autoPlayVideo() {
        if (!autoPlayEnabled) return;
        setInterval(() => {
            let video = document.querySelector('video');
            if (video && video.paused) video.play();
        }, 1000);
    }

    // 倍速
    function setSpeed(speed) {
        speedValue = speed;
        GM_setValue('speedValue', speed);
        let video = document.querySelector('video');
        if (video) video.playbackRate = speed;
    }

    // 自动下一页
    function autoNextPage() {
        if (!autoNextEnabled) return;
        setInterval(() => {
            let video = document.querySelector('video');
            if (video && video.ended && autoJumpRunning) {
                setTimeout(() => { window.history.go(0); }, 1500);
            }
        }, 2000);
    }

    // 发送时长
    function AddTime(seconds) {
        var total = Math.ceil(seconds / 30);
        for (var i = 0; i < total; i++) sendHeartBeatAjax();
    }

    // 停止全部
    function stopAll() {
        manualSelectRunning = false;
        autoJumpRunning = false;
        GM_setValue('manualSelectRunning', false);
        GM_setValue('autoJumpRunning', false);
        if (manualSelectButton) {
            manualSelectButton.textContent = '启动手动选课';
            manualSelectButton.style.backgroundColor = '#FF5722';
        }
        if (autoJumpButton) {
            autoJumpButton.textContent = '开始自动跳转';
            autoJumpButton.style.backgroundColor = '#9C27B0';
        }
    }

    // 手动选课计时
    async function startHeartbeat(minMinutes, maxMinutes) {
        var activityId = null;
        function get() {
            if (typeof units !== 'undefined') {
                for (let u of units) {
                    for (let a of u.activitys) {
                        if (a.activityId) { activityId = a.activityId; return; }
                    }
                }
            } else {
                activityId = new URLSearchParams(location.search).get('activityId');
            }
        }
        get(); await new Promise(r=>setTimeout(r,1000));
        if (!activityId || !GM_getValue('manualSelectRunning')) return;

        var min = Math.ceil(minMinutes*60/30);
        var max = Math.floor(maxMinutes*60/30);
        var total = (Date.now() % (max-min+1)) + min;

        for (var i=0;i<total;i++) {
            if (!GM_getValue('manualSelectRunning')) return;
            sendHeartBeatAjax();
            await new Promise(r=>setTimeout(r,150));
        }
    }

    function ManualSelectAuto(min, max) {
        if (manualSelectRunning) { stopAll(); alert('已停止'); return; }
        manualSelectRunning = true;
        GM_setValue('manualSelectRunning', true);
        manualSelectButton.textContent = '停止手动选课';
        manualSelectButton.style.backgroundColor = '#f44336';
        startHeartbeat(min, max);
    }

    // 自动跳转
    function AllCourseAuto() {
        if (autoJumpRunning) { stopAll(); alert('已停止'); return; }
        var list = [];
        var ver = new URLSearchParams(location.search).get('courseVersionId');
        if (typeof units !== 'undefined') {
            for (let u of units) {
                for (let a of u.activitys) {
                    if (!a.activityId) continue;
                    let name = a.activityName||'';
                    if (name.includes('作业')||name.includes('讲评')||name.includes('考核')||name.includes('破冰')) continue;
                    list.push({id:a.activityId, url:'http://xuexi.jsou.cn/jxpt-web/student/activity/display?courseVersionId='+ver+'&activityId='+a.activityId});
                }
            }
        }
        if (list.length===0) { alert('未找到课程'); return; }
        autoJumpRunning = true;
        GM_setValue('autoJumpRunning', true);
        autoJumpButton.textContent = '停止自动跳转';
        autoJumpButton.style.backgroundColor = '#f44336';
        var now = new URLSearch(location.search).get('activityId');
        var idx = list.findIndex(x=>x.id==now) +1;
        if (idx>=list.length) { alert('已全部完成'); stopAll(); return; }
        setTimeout(()=>location.href=list[idx].url, GM_getValue('jumpDelay',2)*1000);
    }

    // 面板注入
    function InjectPanel() {
        let panel = document.createElement('div');
        panel.style.cssText = `
            position:fixed; left:20px; top:20px; z-index:99999;
            background:#fff; border:1px solid #444; border-radius:8px;
            width:360px; padding:12px; box-shadow:0 0 10px rgba(0,0,0,0.2);
            font-size:14px; line-height:1.5;
        `;

        // 拖拽
        let drag = false,ox=0,oy=0;
        panel.onmousedown = e=>{ drag=true; ox=e.clientX-panel.offsetLeft; oy=e.clientY-panel.offsetTop; };
        document.onmousemove = e=>{ if(!drag)return; panel.style.left=e.clientX-ox+'px'; panel.style.top=e.clientY-oy+'px'; };
        document.onmouseup = ()=>drag=false;

        let title = document.createElement('div');
        title.innerText = '🎯 全自动刷课面板';
        title.style.cssText = 'font-weight:bold; margin-bottom:10px; text-align:center; font-size:16px;';
        panel.appendChild(title);

        // 1. 手动加时长
        let timeGroup = document.createElement('div');
        timeGroup.innerHTML = `<b>📊 手动增加时长</b>`;
        timeGroup.style.marginBottom = '8px';
        panel.appendChild(timeGroup);

        let times = [
            {t:'+30秒',s:30,c:'#2196F3'},
            {t:'+1分钟',s:60,c:'#4CAF50'},
            {t:'+5分钟',s:300,c:'#FF9800'},
            {t:'+10分钟',s:600,c:'#E91E63'}
        ];
        let timeBar = document.createElement('div');
        timeBar.style.display = 'flex';
        timeBar.style.gap = '4px';
        timeBar.style.marginBottom = '10px';
        times.forEach(item=>{
            let b = document.createElement('button');
            b.innerText = item.t;
            b.style.cssText = `padding:4px 8px; background:${item.c}; color:#fff; border:none; border-radius:4px; flex:1;`;
            b.onclick = ()=>AddTime(item.s);
            timeBar.appendChild(b);
        });
        panel.appendChild(timeBar);

        // 2. 自动计时
        let autoTime = document.createElement('div');
        autoTime.style.display = 'flex';
        autoTime.style.gap = '4px';
        autoTime.style.marginBottom = '10px';
        let minI = document.createElement('input');
        minI.type = 'number';
        minI.value = GM_getValue('manualMin',8);
        minI.style.width = '45px';
        let maxI = document.createElement('input');
        maxI.type = 'number';
        maxI.value = GM_getValue('manualMax',10);
        maxI.style.width = '45px';
        let startBtn = document.createElement('button');
        startBtn.innerText = '启动自动计时';
        startBtn.style.cssText = 'background:#FF5722; color:#fff; border:none; padding:4px 8px; border-radius:4px; flex:1;';
        manualSelectButton = startBtn;
        startBtn.onclick = ()=>{
            GM_setValue('manualMin',~~minI.value||8);
            GM_setValue('manualMax',~~maxI.value||10);
            ManualSelectAuto(~~minI.value||8, ~~maxI.value||10);
        };
        autoTime.append(document.createTextNode('时长:'), minI, document.createTextNode('~'), maxI, document.createTextNode('分钟'), startBtn);
        panel.appendChild(autoTime);

        // 3. 自动跳转
        let jumpBar = document.createElement('div');
        jumpBar.style.display = 'flex';
        jumpBar.style.gap = '4px';
        jumpBar.style.marginBottom = '10px';
        let delayI = document.createElement('input');
        delayI.type = 'number';
        delayI.value = GM_getValue('jumpDelay',2);
        delayI.style.width = '40px';
        let jumpBtn = document.createElement('button');
        jumpBtn.innerText = '开始自动跳转';
        jumpBtn.style.cssText = 'background:#9C27B0; color:#fff; border:none; padding:4px 8px; border-radius:4px; flex:1;';
        autoJumpButton = jumpBtn;
        jumpBtn.onclick = ()=>{
            GM_setValue('jumpDelay',~~delayI.value||2);
            AllCourseAuto();
        };
        jumpBar.append(document.createTextNode('延迟:'), delayI, document.createTextNode('秒'), jumpBtn);
        panel.appendChild(jumpBar);

        // 4. 功能开关
        let swTitle = document.createElement('div');
        swTitle.innerHTML = `<b>⚙️ 功能开关</b>`;
        swTitle.style.marginTop = '10px';
        swTitle.style.marginBottom = '6px';
        panel.appendChild(swTitle);

        let sw1 = document.createElement('label');
        sw1.style.display = 'block';
        sw1.innerHTML = `<input type="checkbox" ${autoPlayEnabled?'checked':''}> 🔘 自动播放视频`;
        let c1 = sw1.querySelector('input');
        c1.onchange = ()=>{ autoPlayEnabled=c1.checked; GM_setValue('autoPlayEnabled',c1.checked); };
        panel.appendChild(sw1);

        let sw2 = document.createElement('label');
        sw2.style.display = 'block';
        sw2.innerHTML = `<input type="checkbox" ${autoNextEnabled?'checked':''}> 🔘 播放完自动下一页`;
        let c2 = sw2.querySelector('input');
        c2.onchange = ()=>{ autoNextEnabled=c2.checked; GM_setValue('autoNextEnabled',c2.checked); };
        panel.appendChild(sw2);

        // 5. 倍速
        let speedLine = document.createElement('div');
        speedLine.style.marginTop = '6px';
        speedLine.innerHTML = `<b>🚀 视频倍速：</b>`;
        [0.5,1.0,1.25,1.5,2.0].forEach(s=>{
            let btn = document.createElement('button');
            btn.innerText = s+'x';
            btn.style.cssText = 'margin-left:4px; padding:2px 6px; border:1px solid #ccc; border-radius:3px;';
            btn.onclick = ()=>setSpeed(s);
            speedLine.appendChild(btn);
        });
        panel.appendChild(speedLine);

        // 分割线
        let hr = document.createElement('div');
        hr.style.cssText = 'border-top:1px solid #eee; margin:12px 0;';
        panel.appendChild(hr);

        // 说明文字
        let info = document.createElement('div');
        info.style.fontSize = '12px';
        info.style.color = '#333';
        info.style.lineHeight = '1.6';
        info.innerHTML = `
            <b>基础功能：</b><br>
            1、播放完毕自动下一页<br>
            2、倍数可自由调节，建议最大调节到2倍即可；<br>
            3、作业及线上实验实践、文件题、主观题、简答题等进群：949193546联系群主<br>
            <div style="background:#fff3cd; padding:3px 6px; border-left:4px solid #ffc107; font-weight:bold; margin-top:4px;">
            4、散单、批量单、合作、各类教务处理进QQ一群：756253160 二群：949193546联系群主！
            </div>
        `;
        panel.appendChild(info);

        document.body.appendChild(panel);
    }

    function MainRun() {
        if (location.href.includes('display')) {
            InjectPanel();
            autoPlayVideo();
            autoNextPage();
            setSpeed(speedValue);

            if (GM_getValue('manualSelectRunning')) {
                manualSelectRunning = true;
                manualSelectButton.textContent = '停止手动选课';
                manualSelectButton.style.backgroundColor = '#f44336';
                startHeartbeat(GM_getValue('manualMin',8), GM_getValue('manualMax',10));
            }
            if (GM_getValue('autoJumpRunning')) {
                autoJumpRunning = true;
                autoJumpButton.textContent = '停止自动跳转';
                autoJumpButton.style.backgroundColor = '#f44336';
            }
        }
    }

    MainRun();
})();