// ==UserScript==
// @name         重庆人社|重庆继续教育|无报错控制台无报错+自动下一节
// @namespace    http://tampermonkey.net/
// @version      1.5
// @description  仅指定域名生效，UI可拖动，视频最高15倍速，自动点下一节
// @author       bka
// @match        *://*.21tb.com/*
// @grant        none
// @tag          21tb
// ==/UserScript==

(function() {
    'use strict';

    // 单例检查
    if (document.getElementById("autoStudyUIContainer")) {
        console.log('脚本已运行，无需重复注入');
        return;
    }

    // 样式
    const style = document.createElement('style');
    style.textContent = `
        #autoStudyUIContainer{
            position:fixed;
            top:70px;
            right:15px;
            z-index:99999999;
            background:#fff;
            border:1px solid #e5e7eb;
            border-radius:10px;
            padding:16px;
            width:320px;
            box-shadow:0 4px 20px rgba(0,0,0,0.15);
            font-family:Microsoft YaHei,sans-serif;
            user-select:none;
        }
        #uiDragHead{
            text-align:center;
            font-size:16px;
            font-weight:bold;
            color:#333;
            margin:0 0 12px 0;
            padding:4px 0;
            cursor:move;
            border-bottom:1px solid #eee;
        }
        .ui-item{
            margin:12px 0;
            font-size:14px;
            color:#444;
        }
        #speedValue{
            color:#f56c6c;
            font-weight:bold;
            margin:0 6px;
        }
        input[type="range"]{
            width:180px;
            margin:0 5px;
            vertical-align:middle;
        }
        .btn-wrap{
            text-align:center;
            margin-top:15px;
        }
        .btn-wrap button{
            padding:6px 12px;
            margin:0 4px;
            border:none;
            border-radius:6px;
            cursor:pointer;
            font-size:13px;
            transition:0.2s;
        }
        #startBtn{background:#67c23a;color:#fff;}
        #stopBtn{background:#e6a23c;color:#fff;}
        #closeBtn{background:#f56c6c;color:#fff;}
        .btn-wrap button:hover{opacity:0.9;}
    `;
    document.head.appendChild(style);

    // 悬浮UI
    const uiBox = document.createElement('div');
    uiBox.id = "autoStudyUIContainer";
    uiBox.innerHTML = `
        <div id="uiDragHead">重庆继续教育无报错终极版</div>
        <div class="ui-item">
            自动静音：
            <input type="checkbox" id="autoMute" checked>
        </div>
        <div class="ui-item">
            防页面休眠：
            <input type="checkbox" id="preventSleep" checked>
        </div>
        <div class="ui-item">
            自动跳下一课：
            <input type="checkbox" id="autoJump" checked>
        </div>
        <div class="ui-item">
            视频倍速：
            <input type="range" id="speedRange" min="1" max="8" step="0.5" value="4">
            <span id="speedValue">4.0</span>倍
        </div>
        <div class="btn-wrap">
            <button id="startBtn">启动</button>
            <button id="stopBtn">暂停</button>
            <button id="closeBtn">关闭</button>
        </div>
    `;
    document.body.appendChild(uiBox);

    // 拖拽
    const dragHead = document.getElementById('uiDragHead');
    let isDrag = false;
    let offsetX, offsetY;
    dragHead.addEventListener('mousedown', (e) => {
        isDrag = true;
        offsetX = e.clientX - uiBox.getBoundingClientRect().left;
        offsetY = e.clientY - uiBox.getBoundingClientRect().top;
        uiBox.style.transition = 'none';
        e.preventDefault();
    });
    document.addEventListener('mousemove', (e) => {
        if (!isDrag) return;
        let left = e.clientX - offsetX;
        let top = e.clientY - offsetY;
        const w = uiBox.offsetWidth, h = uiBox.offsetHeight;
        left = Math.max(0, Math.min(left, window.innerWidth - w));
        top = Math.max(0, Math.min(top, window.innerHeight - h));
        uiBox.style.left = left + 'px';
        uiBox.style.top = top + 'px';
    });
    document.addEventListener('mouseup', () => { isDrag = false; });

    // ==================== 核心配置 ====================
    let timer = null;
    let isRunning = true;
    let playSpeed = 4.0;
    let wakeLock = null;

    // 倍速
    const speedRange = document.getElementById('speedRange');
    const speedValue = document.getElementById('speedValue');
    speedRange.addEventListener('input', () => {
        playSpeed = parseFloat(speedRange.value);
        speedValue.innerText = playSpeed.toFixed(1);
    });

    // 休眠
    async function keepAwake() {
        if (!document.getElementById('preventSleep').checked) return;
        try { wakeLock = await navigator.wakeLock.request('screen'); } catch (e) {}
    }

    // 视频倍速 + 静音
    function applyVideoConfig() {
        document.querySelectorAll('video').forEach(v => {
            v.playbackRate = playSpeed;
            v.muted = document.getElementById('autoMute').checked;
        });
    }

    // ==================== 修复：自动关闭完成弹窗（纯原生JS） ====================
    function autoCloseFinishModal() {
        const buttons = document.querySelectorAll('button, div[role="button"]');
        for (const btn of buttons) {
            if ((btn.innerText || '').trim() === '确定' && btn.offsetParent !== null) {
                console.log("✅ 自动点击课程完成弹窗的「确定」按钮");
                btn.click();
                break;
            }
        }
    }

    // ==================== 你提供的 自动跳下一课 核心逻辑 ====================
    const sleep = (ms) => new Promise(resolve => setTimeout(resolve, ms));

    const nextCourse = async (element) => {
        if (!element || !element.innerText.includes('已完成')) return;

        await sleep(1000);
        const tmp = element.parentElement?.nextElementSibling;
        const next_cap = element.parentElement?.parentElement?.parentElement?.nextElementSibling;

        if (tmp) {
            console.log("✅ 点击下一节");
            tmp.click();
        } else if (next_cap) {
            console.log("✅ 点击下一章节");
            next_cap.firstElementChild?.nextElementSibling?.firstElementChild?.click();
        }
    };

    // 课程列表页：自动点击未完成课程（纯原生JS）
    function autoStartUnfinishedCourse() {
        // 先切换到「未完成」标签
        const tabs = document.querySelectorAll('button, div[role="tab"]');
        for (const tab of tabs) {
            if ((tab.innerText || '').trim() === '未完成' && tab.offsetParent !== null) {
                tab.click();
                break;
            }
        }

        // 找未完成课程卡片
        const cards = document.querySelectorAll('div[class*="course"], div[class*="card"]');
        for (const card of cards) {
            if ((card.innerText || '').includes('未完成')) {
                const img = card.querySelector('img');
                if (img && img.offsetParent !== null) {
                    console.log("✅ 点击未完成课程卡片");
                    img.click();
                    return true;
                }
            }
        }
        return false;
    }

    // 定时检测课程状态
    async function startAutoJump() {
        if (!document.getElementById('autoJump').checked) return;

        try {
            const iframe = document.querySelector('.url-course-content')?.contentDocument;
            if (!iframe) {
                // 如果没有iframe，说明在课程列表页，直接自动点未完成课程
                autoStartUnfinishedCourse();
                return;
            }

            const active = iframe.querySelector('.active');
            if (active) nextCourse(active);
        } catch (e) {}
    }

    // ==================== 主循环 ====================
    function mainLoop() {
        autoCloseFinishModal(); // 先关弹窗
        applyVideoConfig();     // 再设置倍速静音
        startAutoJump();        // 再自动跳下一课/列表页
    }

    // 按钮
    document.getElementById('startBtn').onclick = () => {
        if (isRunning) return;
        isRunning = true;
        keepAwake();
        timer = setInterval(mainLoop, 1000);
        alert("✅ 启动成功：无报错版自动学习");
    };

    document.getElementById('stopBtn').onclick = () => {
        isRunning = false;
        clearInterval(timer);
        if (wakeLock) wakeLock.release();
        alert("⏸️ 已暂停");
    };

    document.getElementById('closeBtn').onclick = () => {
        clearInterval(timer);
        if (wakeLock) wakeLock.release();
        uiBox.remove();
        style.remove();
        alert("❌ 已关闭");
    };

    // 启动
    timer = setInterval(mainLoop, 1000);
    keepAwake();
    console.log("✅ 重庆继续教育无报错终极版加载完成，控制台无报错");
})();