// ==UserScript==
// @name         视频加速（防检测版）
// @namespace    http://tampermonkey.net/
// @version      1.2
// @description  无需外部依赖，直接加速计时器、跳过广告、视频倍速（绕过检测）
// @author       
// @match        *://*/*
// @grant        none
// @run-at       document-start
// @license      MIT
// ==/UserScript==

(function() {
    'use strict';

    if (window.TimerHookerRunning) return;
    window.TimerHookerRunning = true;

    console.log("[TimerHooker] 防检测版启动中...");

    let speed = 1.0;
    let lastRealTime = Date.now();
    let lastHookTime = Date.now();
    let uiCreated = false;

    // =========================================
    // 防检测：隐藏加速特征
    // =========================================
    
    function hidePlaybackRate() {
        const originalDescriptor = Object.getOwnPropertyDescriptor(HTMLMediaElement.prototype, 'playbackRate');
        
        if (originalDescriptor) {
            Object.defineProperty(HTMLMediaElement.prototype, 'playbackRate', {
                get: function() {
                    return 1;
                },
                set: function(value) {
                    const realSpeed = Math.min(value, 16);
                    this._realPlaybackRate = realSpeed;
                    originalDescriptor.set.call(this, realSpeed);
                },
                configurable: true
            });
        }
        
        const observer = new MutationObserver(function(mutations) {
            document.querySelectorAll('video').forEach(function(video) {
                if (!video._hooked) {
                    video._hooked = true;
                    video._realPlaybackRate = speed;
                    try {
                        Object.getOwnPropertyDescriptor(HTMLMediaElement.prototype, 'playbackRate')
                            .set.call(video, speed);
                    } catch(e) {}
                }
            });
        });
        observer.observe(document.documentElement, { childList: true, subtree: true });
    }

    // =========================================
    // 劫持 setTimeout/setInterval/Date.now
    // =========================================
    const originalSetTimeout = window.setTimeout;
    window.setTimeout = function(cb, delay) {
        const realDelay = delay / speed;
        return originalSetTimeout(cb, realDelay);
    };

    const originalSetInterval = window.setInterval;
    window.setInterval = function(cb, delay) {
        const realDelay = delay / speed;
        return originalSetInterval(cb, realDelay);
    };

    const originalDateNow = Date.now;
    Date.now = function() {
        const now = originalDateNow();
        const delta = now - lastRealTime;
        lastRealTime = now;
        lastHookTime += delta * speed;
        return lastHookTime;
    };

    const originalPerformanceNow = performance.now.bind(performance);
    performance.now = function() {
        return originalPerformanceNow() * speed;
    };

    // =========================================
    // 设置视频速度
    // =========================================
    function setVideoSpeed(value) {
        speed = Math.min(16, Math.max(0.1, value));
        document.querySelectorAll('video').forEach(function(video) {
            try {
                Object.getOwnPropertyDescriptor(HTMLMediaElement.prototype, 'playbackRate')
                    .set.call(video, speed);
                video._realPlaybackRate = speed;
            } catch(e) {}
        });
        updateUISpeed();
        console.log('[TimerHooker] 当前倍速:', speed);
    }

    // =========================================
    // UI 界面（所有网页都显示）
    // =========================================
    let mainButton = null;
    let speedDisplay = null;
    let container = null;

    function updateUISpeed() {
        if (mainButton) {
            mainButton.textContent = `${speed.toFixed(1)}x`;
        }
        if (speedDisplay) {
            speedDisplay.textContent = `${speed.toFixed(1)}x`;
            speedDisplay.classList.remove('th-hide');
            setTimeout(() => speedDisplay.classList.add('th-hide'), 400);
        }
    }

    function createUI() {
        // 如果已经存在，不重复创建
        if (document.getElementById('th-container')) {
            return;
        }

        // 样式
        const style = document.createElement('style');
        style.id = 'th-style';
        style.textContent = `
            .th-container {
                position: fixed !important;
                right: 16px !important;
                bottom: 80px !important;
                z-index: 9999999 !important;
                display: flex !important;
                flex-direction: column !important;
                gap: 4px !important;
                align-items: center !important;
                opacity: 0.5 !important;
                transition: opacity 0.3s !important;
                pointer-events: none !important;
                font-family: Arial, sans-serif !important;
            }
            .th-container:hover {
                opacity: 0.9 !important;
            }
            .th-container * {
                pointer-events: auto !important;
            }
            .th-main {
                width: 36px !important;
                height: 36px !important;
                border-radius: 50% !important;
                background: rgba(94, 234, 212, 0.85) !important;
                color: #000 !important;
                font-size: 12px !important;
                font-weight: bold !important;
                border: none !important;
                cursor: pointer !important;
                text-align: center !important;
                line-height: 36px !important;
                transition: all 0.2s !important;
                user-select: none !important;
                box-shadow: 0 2px 8px rgba(0,0,0,0.15) !important;
                backdrop-filter: blur(4px) !important;
                font-family: Arial, sans-serif !important;
            }
            .th-main:hover {
                transform: scale(1.1) !important;
                background: rgba(94, 234, 212, 1) !important;
                box-shadow: 0 4px 16px rgba(94, 234, 212, 0.3) !important;
            }
            .th-main:active {
                transform: scale(0.9) !important;
            }
            .th-btn-group {
                display: flex !important;
                gap: 3px !important;
                flex-wrap: wrap !important;
                justify-content: center !important;
                max-width: 100px !important;
            }
            .th-btn-small {
                width: 28px !important;
                height: 28px !important;
                border-radius: 50% !important;
                background: rgba(52, 211, 153, 0.7) !important;
                color: #000 !important;
                font-size: 10px !important;
                font-weight: bold !important;
                border: none !important;
                cursor: pointer !important;
                text-align: center !important;
                line-height: 28px !important;
                transition: all 0.2s !important;
                user-select: none !important;
                backdrop-filter: blur(4px) !important;
                font-family: Arial, sans-serif !important;
            }
            .th-btn-small:hover {
                transform: scale(1.15) !important;
                background: rgba(52, 211, 153, 0.95) !important;
            }
            .th-btn-small:active {
                transform: scale(0.85) !important;
            }
            .th-btn-reset {
                background: rgba(248, 113, 113, 0.7) !important;
            }
            .th-btn-reset:hover {
                background: rgba(248, 113, 113, 0.95) !important;
            }
            .th-speed {
                position: fixed !important;
                inset: 0 !important;
                display: flex !important;
                align-items: center !important;
                justify-content: center !important;
                font-size: 80px !important;
                font-weight: bold !important;
                background: rgba(0,0,0,0.3) !important;
                color: rgba(94, 234, 212, 0.9) !important;
                z-index: 99999999 !important;
                pointer-events: none !important;
                text-shadow: 0 0 40px rgba(94, 234, 212, 0.3) !important;
                font-family: Arial, sans-serif !important;
                backdrop-filter: blur(2px) !important;
            }
            .th-hide {
                display: none !important;
            }
            .th-label {
                color: rgba(255,255,255,0.4) !important;
                font-size: 8px !important;
                font-family: monospace !important;
                letter-spacing: 2px !important;
                margin-top: 2px !important;
                text-shadow: 0 0 4px rgba(0,0,0,0.5) !important;
                pointer-events: none !important;
            }
        `;
        document.head.appendChild(style);

        // 主容器
        container = document.createElement('div');
        container.className = 'th-container';
        container.id = 'th-container';
        container.innerHTML = `
            <button class="th-main" id="th-main-btn">${speed.toFixed(1)}x</button>
            <div class="th-btn-group">
                <button class="th-btn-small" id="th-up2">2×</button>
                <button class="th-btn-small" id="th-up1">+1</button>
                <button class="th-btn-small" id="th-down1">-1</button>
                <button class="th-btn-small th-btn-reset" id="th-reset">↺</button>
            </div>
            <div class="th-label">⚡</div>
        `;
        document.body.appendChild(container);

        // 大号速度提示
        const speedDisplayEl = document.createElement('div');
        speedDisplayEl.className = 'th-speed th-hide';
        speedDisplayEl.id = 'th-speed-display';
        speedDisplayEl.textContent = `${speed.toFixed(1)}x`;
        document.body.appendChild(speedDisplayEl);

        mainButton = document.getElementById('th-main-btn');
        speedDisplay = document.getElementById('th-speed-display');

        // 事件绑定
        document.getElementById('th-main-btn').addEventListener('click', function(e) {
            e.stopPropagation();
            const val = prompt("设置倍速 (0.1 - 16):", speed);
            if (val === null) return;
            const num = parseFloat(val);
            if (!isNaN(num) && num > 0 && num <= 16) {
                setVideoSpeed(num);
            } else {
                alert('请输入 0.1 ~ 16 之间的数字');
            }
        });

        document.getElementById('th-up2').addEventListener('click', function(e) {
            e.stopPropagation();
            setVideoSpeed(Math.min(16, speed * 2));
        });

        document.getElementById('th-up1').addEventListener('click', function(e) {
            e.stopPropagation();
            setVideoSpeed(Math.min(16, speed + 1));
        });

        document.getElementById('th-down1').addEventListener('click', function(e) {
            e.stopPropagation();
            setVideoSpeed(Math.max(0.1, speed - 1));
        });

        document.getElementById('th-reset').addEventListener('click', function(e) {
            e.stopPropagation();
            setVideoSpeed(1.0);
        });

        // 拖动功能
        let isDragging = false;
        let startX, startY, startRight, startBottom;

        container.addEventListener('mousedown', function(e) {
            if (e.target.closest('button')) return;
            isDragging = true;
            const rect = container.getBoundingClientRect();
            startX = e.clientX;
            startY = e.clientY;
            startRight = window.innerWidth - rect.right;
            startBottom = window.innerHeight - rect.bottom;
            container.style.cursor = 'grabbing';
            container.style.opacity = '0.9';
            e.preventDefault();
        });

        document.addEventListener('mousemove', function(e) {
            if (!isDragging) return;
            const dx = e.clientX - startX;
            const dy = e.clientY - startY;
            container.style.right = (startRight - dx) + 'px';
            container.style.bottom = (startBottom - dy) + 'px';
        });

        document.addEventListener('mouseup', function() {
            isDragging = false;
            container.style.cursor = 'default';
            container.style.opacity = '';
        });

        uiCreated = true;
        console.log('[TimerHooker] ✅ UI已创建（所有网页可见）');
    }

    // =========================================
    // 确保UI在所有网页都显示
    // =========================================
    
    // 1. 页面加载时创建
    function initUI() {
        if (!document.body) {
            setTimeout(initUI, 100);
            return;
        }
        createUI();
    }

    // 2. 监听页面变化（SPA应用切换页面时重新创建）
    function watchForPageChanges() {
        // 监听 body 变化
        const observer = new MutationObserver(function(mutations) {
            // 检查UI是否还存在
            if (!document.getElementById('th-container')) {
                createUI();
            }
        });
        
        // 监听整个文档的变化
        observer.observe(document.documentElement, {
            childList: true,
            subtree: true
        });

        // 监听 popstate（路由变化）
        window.addEventListener('popstate', function() {
            setTimeout(function() {
                if (!document.getElementById('th-container')) {
                    createUI();
                }
            }, 500);
        });

        // 监听 hash 变化
        window.addEventListener('hashchange', function() {
            setTimeout(function() {
                if (!document.getElementById('th-container')) {
                    createUI();
                }
            }, 500);
        });

        // 监听 DOMContentLoaded（页面刷新）
        document.addEventListener('DOMContentLoaded', function() {
            setTimeout(function() {
                if (!document.getElementById('th-container')) {
                    createUI();
                }
            }, 500);
        });
    }

    // =========================================
    // 键盘快捷键
    // =========================================
    document.addEventListener('keydown', function(e) {
        if (e.ctrlKey && e.shiftKey && e.key === 'ArrowUp') {
            e.preventDefault();
            setVideoSpeed(Math.min(16, speed + 1));
        } else if (e.ctrlKey && e.shiftKey && e.key === 'ArrowDown') {
            e.preventDefault();
            setVideoSpeed(Math.max(0.1, speed - 1));
        } else if (e.ctrlKey && e.shiftKey && e.key === 'r') {
            e.preventDefault();
            setVideoSpeed(1.0);
        } else if (e.ctrlKey && e.shiftKey && (e.key === '=' || e.key === '+')) {
            e.preventDefault();
            setVideoSpeed(Math.min(16, speed * 2));
        } else if (e.ctrlKey && e.shiftKey && e.key === '-') {
            e.preventDefault();
            setVideoSpeed(Math.max(0.1, speed / 2));
        }
    });

    // =========================================
    // 启动
    // =========================================
    hidePlaybackRate();

    // 立即尝试创建UI
    if (document.readyState === 'loading') {
        document.addEventListener('DOMContentLoaded', function() {
            initUI();
            watchForPageChanges();
        });
    } else {
        initUI();
        watchForPageChanges();
    }

    // 额外保险：每隔5秒检查一次UI是否存在
    setInterval(function() {
        if (!document.getElementById('th-container') && document.body) {
            createUI();
        }
    }, 5000);

    // 视频速度保持
    setInterval(() => {
        document.querySelectorAll('video').forEach(function(video) {
            if (video._realPlaybackRate !== speed) {
                try {
                    Object.getOwnPropertyDescriptor(HTMLMediaElement.prototype, 'playbackRate')
                        .set.call(video, speed);
                    video._realPlaybackRate = speed;
                } catch(e) {}
            }
        });
    }, 3000);

    console.log('[TimerHooker] ✅ 防检测版启动成功（所有网页显示UI）');
    console.log('[TimerHooker] 📌 快捷键: Ctrl+Shift+↑/↓ 调速度');

})();