// ==UserScript==
// @name         安徽大学专业技术人员继续教育加速播放
// @namespace    http://tampermonkey.net/
// @version      1.0
// @description  16倍速播放视频
// @author       You
// @match        https://ilearn.cfyedu.com/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    // 设置视频播放速度为16倍速
    function setPlaybackSpeed(speed = 16) {
        const video = document.querySelector('.video-js video');
        if (video) {
            video.playbackRate = speed;
            console.log('设置播放速度为:', speed + 'x');
        }
    }

    // 持续监控并设置速度
    function monitorAndSetSpeed() {
        const video = document.querySelector('.video-js video');
        if (!video) return;

        // 每次时间更新时检查并设置速度
        video.addEventListener('timeupdate', function() {
            if (this.playbackRate < 16) {
                this.playbackRate = 16;
            }
        });

        // 监听播放状态变化
        video.addEventListener('play', function() {
            this.playbackRate = 16;
        });

        video.addEventListener('playing', function() {
            this.playbackRate = 16;
        });

        video.addEventListener('ratechange', function() {
            if (this.playbackRate < 16) {
                this.playbackRate = 16;
            }
        });

        // 立即设置
        setPlaybackSpeed(16);
    }

    // 初始化
    function init() {
        console.log('视频加速脚本启动');

        // 等待视频加载
        const checkInterval = setInterval(() => {
            const video = document.querySelector('.video-js video');
            if (video && video.duration > 0) {
                clearInterval(checkInterval);
                console.log('视频已加载，开始加速');
                
                // 设置速度
                setTimeout(() => {
                    monitorAndSetSpeed();
                }, 1000);
            }
        }, 500);

        // 监听DOM变化
        const observer = new MutationObserver(() => {
            const video = document.querySelector('.video-js video');
            if (video && video.duration > 0) {
                setTimeout(monitorAndSetSpeed, 1000);
            }
        });

        observer.observe(document.body, {
            childList: true,
            subtree: true
        });
    }

    // 启动
    if (document.readyState === 'loading') {
        document.addEventListener('DOMContentLoaded', init);
    } else {
        init();
    }

    console.log('视频加速脚本已加载');
})();