// ==UserScript==
// @name         计时器掌控者 | 视频广告加速器
// @namespace    http://tampermonkey.net/
// @version      1.0.1
// @description  无需外部依赖，直接加速计时器、跳过广告、视频倍速
// @author       
// @match        *://*/*
// @grant        none
// @run-at       document-start
// @license      MIT
// ==/UserScript==

(function() {
    'use strict';

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

    console.log("[TimerHooker] 无依赖版启动中...");

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

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

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

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

    // =========================================
    // UI 界面
    // =========================================
    function createUI() {
        const style = document.createElement('style');
        style.textContent = `
            .th-ui{position:fixed;left:-36px;top:22%;z-index:999999;transition:all 0.3s}
            .th-ui:hover{left:8px}
            .th-btn{width:38px;height:38px;background:#5eead4;border-radius:50%;margin:5px 0;
            text-align:center;line-height:38px;cursor:pointer;opacity:0.7;color:#000;font-weight:bold}
            .th-btn:hover{opacity:1}
            .th-speed{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;
            font-size:48px;background:rgba(0,0,0,0.04);z-index:99999}
            .th-hide{display:none!important}
        `;
        document.head.appendChild(style);

        const ui = document.createElement('div');
        ui.innerHTML = `
            <div class="th-ui">
                <div class="th-btn th-main">x${speed}</div>
                <div class="th-btn th-up1">&gt;</div>
                <div class="th-btn th-down1">&lt;</div>
                <div class="th-btn th-up2">&gt;&gt;</div>
                <div class="th-btn th-down2">&lt;&lt;</div>
                <div class="th-btn th-reset">O</div>
            </div>
            <div class="th-speed th-hide">x${speed}</div>
        `;
        document.body.appendChild(ui);

        const main = document.querySelector('.th-main');
        const show = document.querySelector('.th-speed');

        function updateUI() {
            main.textContent = `x${speed.toFixed(1)}`;
            show.textContent = `x${speed.toFixed(1)}`;
            show.classList.remove('th-hide');
            setTimeout(() => show.classList.add('th-hide'), 200);

            document.querySelectorAll('video').forEach(v => {
                try { v.playbackRate = speed; } catch(e){}
            });
        }

        document.querySelector('.th-main').onclick = () => {
            const val = prompt("设置倍速", speed);
            if (!val || isNaN(val) || val <= 0) return;
            speed = parseFloat(val);
            updateUI();
        };
        document.querySelector('.th-up1').onclick = () => {
            speed = Math.min(16, speed + 2);
            updateUI();
        };
        document.querySelector('.th-down1').onclick = () => {
            speed = Math.max(0.1, speed - 2);
            updateUI();
        };
        document.querySelector('.th-up2').onclick = () => {
            speed = Math.min(16, speed * 2);
            updateUI();
        };
        document.querySelector('.th-down2').onclick = () => {
            speed = Math.max(0.1, speed / 2);
            updateUI();
        };
        document.querySelector('.th-reset').onclick = () => {
            speed = 1.0;
            updateUI();
        };
    }

    window.addEventListener('load', () => {
        createUI();
        console.log("[TimerHooker] ✅ 启动成功（无依赖版）");
    });

})();