// ==UserScript==
// @name         柠檬文才学习平台自动刷课【全自动】
// @namespace    `https://learning.wencaischool.net/`
// @namespace    一心向善
// @version      1.1
// @description  全自动完成刷视频章节，支持自动化下一节【如需答题、考试请联系作者有偿代处理】
// @match        *://learning.wencaischool.net/*
// @match        *://site.wencaischool.net/*
// @match        *://*.wencaischool.net/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    if (window.__studyHelper) {
        console.log('🎓 已有脚本在运行，跳过初始化');
        return;
    }

    console.log('🎓 天府文才自动刷课 v1.0 启动！');
    console.log('📌 当前URL:', location.href);

    const config = {
        speed: 2.0,
        autoPlay: true,
        autoNext: true,
        debug: true
    };

    function log(msg, type = 'info') {
        if (config.debug || type !== 'info') {
            const prefix = type === 'error' ? '❌' : type === 'success' ? '✅' : type === 'warning' ? '⚠️' : '🔍';
            console.log(`${prefix} ${msg}`);
        }
    }

    function createUI() {
        const existingPanel = window.top.document.getElementById('study-helper-v11');
        if (existingPanel) {
            log('⚠️ 主页面已有控制面板，跳过创建', 'warning');
            return;
        }

        if (window !== window.top) {
            log('⚠️ 当前是iframe，不创建控制面板', 'warning');
            return;
        }

        const panel = document.createElement('div');
        panel.id = 'study-helper-v11';
        panel.innerHTML = `
            <div id="study-panel-drag" style="background:linear-gradient(135deg,#1a1a2e,#16213e);color:#fff;padding:15px;border-radius:10px;position:fixed;top:20px;right:20px;z-index:99999999;min-width:260px;box-shadow:0 8px 32px rgba(0,0,0,0.5);font-family:'Microsoft YaHei',Arial;border:2px solid #0f3460;cursor:move;">
                <div style="text-align:center;margin-bottom:10px;padding-bottom:8px;border-bottom:1px solid rgba(255,255,255,0.1);">
                    <div style="font-size:18px;font-weight:bold;color:#4ade80;">🎬 天府文才视频助手</div>
                    <div style="font-size:11px;color:#aaa;margin-top:3px;">v1.0</div>
                </div>
                <div style="margin:10px 0;">
                    <div style="margin-bottom:5px;font-size:13px;color:#aaa;">播放速度 (最高16x):</div>
                    <select id="speed-sel" style="width:100%;padding:6px;background:#0f3460;color:#fff;border:none;border-radius:5px;font-size:14px;cursor:pointer;">
                        <option value="1">1x 正常</option>
                        <option value="1.5">1.5x 快速</option>
                        <option value="2" selected>2x 倍速</option>
                        <option value="2.5">2.5x 高速</option>
                        <option value="3">3x 极速</option>
                        <option value="4">4x 狂飙</option>
                        <option value="5">5x</option>
                        <option value="6">6x</option>
                        <option value="8">8x</option>
                        <option value="10">10x</option>
                        <option value="12">12x</option>
                        <option value="16">16x 极限 ⚡</option>
                    </select>
                </div>
                <div style="margin:10px 0;">
                    <label style="display:flex;align-items:center;margin-bottom:5px;cursor:pointer;">
                        <input type="checkbox" id="autoplay-cb" checked style="margin-right:8px;width:18px;height:18px;cursor:pointer;">
                        <span style="font-size:13px;">自动播放</span>
                    </label>
                    <label style="display:flex;align-items:center;cursor:pointer;">
                        <input type="checkbox" id="autonext-cb" checked style="margin-right:8px;width:18px;height:18px;cursor:pointer;">
                        <span style="font-size:13px;">自动切换下一章</span>
                    </label>
                </div>
                <div style="margin-top:12px;padding:10px;background:rgba(0,0,0,0.3);border-radius:6px;">
                    <div style="font-size:12px;color:#888;margin-bottom:4px;">📊 状态:</div>
                    <div id="status-txt" style="font-size:13px;color:#4ade80;">运行中</div>
                    <div id="info-txt" style="font-size:11px;color:#aaa;margin-top:5px;"></div>
                    <div id="chapter-txt" style="font-size:11px;color:#ff9800;margin-top:5px;word-break:break-all;"></div>
                </div>
                <div style="margin-top:10px;padding:10px;background:rgba(30, 60, 100, 0.5);border-radius:6px;font-size:12px;color:#ccc;">
                    <div style="margin-bottom:4px;">1、本脚本仅适用于处理视频；</div>
                    <div style="font-weight:bold;color:#ffd700;">2、如需处理答题、考试等联系作者有偿代处理：TFJYPXJG</div>
                </div>
            </div>
        `;
        document.body.appendChild(panel);

        // 初始化拖拽功能
        initDrag();

        document.getElementById('speed-sel').addEventListener('change', function() {
            config.speed = parseFloat(this.value);
            applySpeed();
            updateStatus(`速度: ${config.speed}x`, 'success');
        });

        document.getElementById('autoplay-cb').addEventListener('change', function() {
            config.autoPlay = this.checked;
            updateStatus(config.autoPlay ? '自动播放 开启' : '自动播放 关闭', 'info');
        });

        document.getElementById('autonext-cb').addEventListener('change', function() {
            config.autoNext = this.checked;
            updateStatus(config.autoNext ? '自动切换 开启' : '自动切换 关闭', 'info');
        });

        log('✅ UI创建成功', 'success');
    }

    function initDrag() {
        const panel = document.getElementById('study-panel-drag');
        if (!panel) return;

        let isDragging = false;
        let startX, startY, panelX, panelY;

        panel.addEventListener('mousedown', function(e) {
            isDragging = true;
            startX = e.clientX;
            startY = e.clientY;
            panelX = panel.offsetLeft;
            panelY = panel.offsetTop;
            panel.style.cursor = 'grabbing';
            panel.style.zIndex = '999999999';
        });

        document.addEventListener('mousemove', function(e) {
            if (!isDragging) return;

            const dx = e.clientX - startX;
            const dy = e.clientY - startY;

            let newX = panelX + dx;
            let newY = panelY + dy;

            const maxX = window.innerWidth - panel.offsetWidth;
            const maxY = window.innerHeight - panel.offsetHeight;

            newX = Math.max(0, Math.min(newX, maxX));
            newY = Math.max(0, Math.min(newY, maxY));

            panel.style.left = newX + 'px';
            panel.style.top = newY + 'px';
            panel.style.right = 'auto';
        });

        document.addEventListener('mouseup', function() {
            if (isDragging) {
                isDragging = false;
                panel.style.cursor = 'move';
            }
        });

        panel.addEventListener('mouseup', function() {
            panel.style.cursor = 'move';
        });
    }

    function updateStatus(text, type) {
        if (window.top !== window) {
            const el = window.top.document.getElementById('status-txt');
            if (el) {
                el.textContent = text;
                el.style.color = type === 'success' ? '#4ade80' : type === 'warning' ? '#fbbf24' : type === 'error' ? '#ef4444' : '#60a5fa';
            }
        } else {
            const el = document.getElementById('status-txt');
            if (el) {
                el.textContent = text;
                el.style.color = type === 'success' ? '#4ade80' : type === 'warning' ? '#fbbf24' : type === 'error' ? '#ef4444' : '#60a5fa';
            }
        }
        log(text, type);
    }

    function updateInfo(text) {
        if (window.top !== window) {
            const el = window.top.document.getElementById('info-txt');
            if (el) el.textContent = text;
        } else {
            const el = document.getElementById('info-txt');
            if (el) el.textContent = text;
        }
    }

    function updateChapter(text) {
        if (window.top !== window) {
            const el = window.top.document.getElementById('chapter-txt');
            if (el) el.textContent = text;
        } else {
            const el = document.getElementById('chapter-txt');
            if (el) el.textContent = text;
        }
    }

    function findVideo() {
        const frames = document.querySelectorAll('iframe');
        for (let frame of frames) {
            try {
                const v = frame.contentDocument.querySelector('video');
                if (v) { log('📺 在iframe中找到视频', 'success'); return v; }
            } catch (e) {}
        }
        const videos = document.querySelectorAll('video');
        if (videos.length > 0) {
            for (let v of videos) if (v.offsetParent !== null || v.style.display !== 'none') return v;
            return videos[0];
        }
        return null;
    }

    function applySpeed() { const v = findVideo(); if (v) v.playbackRate = config.speed; }

    // ============== 改进：更好的章节检测 ==============
    function findChapters() {
        const allChapters = [];
        const frames = document.querySelectorAll('iframe');

        for (let frame of frames) {
            try {
                const doc = frame.contentDocument;
                const sections = doc.querySelectorAll('.childSection');
                log(`📋 在iframe中找到 ${sections.length} 个.childSection`, 'info');

                for (let sec of sections) {
                    if (!sec.offsetParent) continue;
                    const text = (sec.textContent || '').trim();
                    if (!text || !text.includes('应耗能量')) continue;

                    const isActive = checkIsActive(sec);

                    // 调试：输出找到的章节
                    if (isActive) {
                        log(`✅ 找到当前激活章节: ${text.substring(0, 40)}`, 'success');
                    }

                    allChapters.push({
                        element: sec,
                        text: text.substring(0, 50),
                        isActive: isActive
                    });
                }

                if (allChapters.length > 0) break;
            } catch (e) {}
        }

        log(`✅ 总共找到 ${allChapters.length} 个章节`, 'success');

        return allChapters;
    }

    // 改进：更好的当前章节检测
    function checkIsActive(element) {
        // 方法1：检查元素自身或子元素的样式
        const children = element.querySelectorAll('*');
        for (let child of children) {
            const style = window.getComputedStyle(child);

            // 检查背景色（蓝色圆点）
            if (style.backgroundColor) {
                const bg = style.backgroundColor.toLowerCase();
                if (bg.includes('blue') ||
                    bg.includes('rgb(33, 150, 243)') ||
                    bg.includes('rgb(30, 144, 255)') ||
                    bg.includes('rgb(0, 122, 255)') ||
                    bg.includes('rgb(52, 152, 219)') ||
                    bg.includes('rgb(66, 153, 225)')) {
                    return true;
                }
            }

            // 检查文字颜色
            if (style.color) {
                const color = style.color.toLowerCase();
                if (color.includes('blue') ||
                    color.includes('rgb(33, 150, 243)') ||
                    color.includes('rgb(30, 144, 255)')) {
                    return true;
                }
            }

            // 检查border颜色（如果圆点是边框实现的）
            if (style.borderColor) {
                const bc = style.borderColor.toLowerCase();
                if (bc.includes('blue') ||
                    bc.includes('rgb(33, 150, 243)')) {
                    return true;
                }
            }
        }

        // 方法2：检查元素的class是否包含active相关的词
        const className = element.className.toLowerCase();
        if (className.includes('active') ||
            className.includes('current') ||
            className.includes('selected') ||
            className.includes('playing')) {
            return true;
        }

        // 方法3：检查父元素的class
        if (element.parentElement) {
            const parentClass = element.parentElement.className.toLowerCase();
            if (parentClass.includes('active') ||
                parentClass.includes('current')) {
                return true;
            }
        }

        // 方法4：检查元素的文本颜色（可能是蓝色高亮）
        const selfStyle = window.getComputedStyle(element);
        if (selfStyle.color) {
            const color = selfStyle.color.toLowerCase();
            if (color.includes('blue') ||
                color.includes('rgb(33, 150, 243)') ||
                color.includes('rgb(30, 144, 255)')) {
                return true;
            }
        }

        return false;
    }

    function findNextChapter() {
        const chapters = findChapters();
        if (chapters.length === 0) {
            updateStatus('未找到章节', 'error');
            return null;
        }

        let currentIndex = -1;
        for (let i = 0; i < chapters.length; i++) {
            if (chapters[i].isActive) {
                currentIndex = i;
                log(`📍 找到当前章节: [${i}] ${chapters[i].text.substring(0, 40)}`, 'success');
                break;
            }
        }

        if (currentIndex === -1) {
            log('⚠️ 未找到当前激活章节', 'warning');
            // 改进：不要直接返回第一个，而是保持当前状态
            updateStatus('未识别当前章节，请手动选择', 'warning');
            return null; // 返回null，不跳转
        }

        const nextIndex = currentIndex + 1;
        if (nextIndex >= chapters.length) {
            log('🎉 已完成所有章节！', 'success');
            updateStatus('🎉 已完成所有章节！', 'success');
            return null;
        }

        log(`➡️ 下一章: [${nextIndex}] ${chapters[nextIndex].text.substring(0, 40)}`, 'success');
        updateChapter(`当前: ${chapters[currentIndex].text.substring(0, 25)}\n下一章: ${chapters[nextIndex].text.substring(0, 25)}`);

        return chapters[nextIndex].element;
    }

    let counter = 0;
    let videoFinished = false;
    let switchCooldown = false;

    function mainLoop() {
        counter++;

        if (!config.autoNext && !config.autoPlay) {
            if (counter % 120 === 0) updateStatus('脚本已暂停', 'warning');
            return;
        }

        const v = findVideo();

        if (!v) {
            if (counter % 60 === 0) {
                updateStatus('未检测到视频', 'warning');
                updateInfo('请进入视频播放页面');
            }
            return;
        }

        if (Math.abs(v.playbackRate - config.speed) > 0.01) applySpeed();

        if (config.autoPlay && v.paused && !v.ended && v.readyState >= 2) {
            v.play().catch(e => log('播放失败: ' + e.message, 'error'));
            updateStatus('正在播放', 'success');
            videoFinished = false;
        }

        if (v.duration && !isNaN(v.duration)) {
            const cur = Math.floor(v.currentTime);
            const total = Math.floor(v.duration);
            const pct = Math.floor((cur / total) * 100);
            const cm = Math.floor(cur / 60), cs = cur % 60, tm = Math.floor(total / 60), ts = total % 60;
            updateInfo(`📊 ${pct}% | ${cm}:${String(cs).padStart(2, '0')} / ${tm}:${String(ts).padStart(2, '0')} | ${config.speed}x`);

            if (cur >= total - 2 && !videoFinished && config.autoNext && !switchCooldown) {
                videoFinished = true;
                updateStatus('视频即将完成，准备切换...', 'warning');
                setTimeout(() => {
                    const next = findNextChapter();
                    if (next) {
                        updateStatus('点击下一章', 'success');
                        switchCooldown = true;
                        next.click();
                        setTimeout(() => {
                            switchCooldown = false;
                            videoFinished = false;
                        }, 10000);
                    } else {
                        updateStatus('未找到下一章', 'error');
                    }
                }, 3000);
            }
        }
    }

    function init() {
        log('⏳ 初始化...', 'info');

        if (window === window.top) {
            setTimeout(createUI, 800);
        }

        setInterval(mainLoop, 500);
        updateStatus('脚本已启动', 'success');
    }

    if (document.readyState === 'complete') {
        init();
    } else {
        window.addEventListener('load', init);
        window.addEventListener('DOMContentLoaded', init);
    }

    window.__studyHelper = {
        config: config,
        findVideo: findVideo,
        findChapters: findChapters,
        findNextChapter: findNextChapter,
        version: '11.3'
    };
})();