// ==UserScript==
// @name         自动播放下一个视频
// @namespace    http://tampermonkey.net/
// @version      0.14
// @description  每60秒检查视频进度，达到目标时间后点击下一节/章并尝试自动播放
// @author       YHXWYZM
// @match        https://www.learnin.com.cn/*
// @grant        none
// @license      AGPL
// @downloadURL none
// ==/UserScript==

(function() {
    'use strict';

    // 将时间字符串转换为秒数
    function timeToSeconds(timeStr) {
        const cleanedTime = timeStr.replace(/[^\d:]/g, '');
        const [hours, minutes, seconds] = cleanedTime.split(':').map(Number);
        return hours * 3600 + minutes * 60 + seconds;
    }

    // 模拟用户点击
    function simulateClick(element) {
        const event = new MouseEvent('click', { bubbles: true, cancelable: true, view: window });
        element.dispatchEvent(event);
    }

    // 自动播放视频
    function autoPlayVideo() {
        console.log('尝试自动播放视频...');
        const playButton = document.querySelector('.pv-iconfont.pv-iconfont-hover');
        if (playButton) {
            console.log('找到播放按钮，尝试点击');
            simulateClick(playButton);
        } else {
            console.log('未找到播放按钮 .pv-iconfont.pv-iconfont-hover');
        }
    }

    // 检查视频进度
    function checkVideoProgress() {
        console.log('检查视频进度...');

        const videoHint = document.querySelector('.video-hint');
        if (!videoHint) {
            console.log('未找到.video-hint区域');
            return;
        }

        const spans = videoHint.querySelectorAll('span');
        console.log('找到的span数量:', spans.length, '内容:', Array.from(spans).map(s => s.textContent.trim()));

        let targetTime = null;
        let currentTime = null;
        for (let i = 0; i < spans.length; i++) {
            const text = spans[i].textContent.trim();
            if (/^\d{2}:\d{2}:\d{2}$/.test(text)) {
                if (!targetTime) {
                    targetTime = text;
                } else if (!currentTime) {
                    currentTime = text;
                    break;
                }
            }
        }

        if (!targetTime || !currentTime) {
            console.log('未找到完整的时间对', { targetTime, currentTime });
            return;
        }

        console.log('目标时间:', targetTime, '当前时间:', currentTime);

        const targetSeconds = timeToSeconds(targetTime);
        const currentSeconds = timeToSeconds(currentTime);

        console.log('目标秒数:', targetSeconds, '当前秒数:', currentSeconds);

        const nextButton = document.querySelector('.next-chapter button');
        console.log('下一节/章按钮:', nextButton ? nextButton.textContent.trim() : '未找到');

        if (!nextButton) {
            console.log('未找到下一节/章按钮');
            return;
        }

        if (currentSeconds >= targetSeconds) {
            console.log('时间条件满足，点击下一节/章按钮');
            simulateClick(nextButton);

            // 延迟检查并播放新视频
            setTimeout(() => {
                autoPlayVideo();
            }, 3000); // 增加到3秒等待页面加载
        } else {
            console.log('时间尚未达到目标');
        }
    }

    // 启动检查
    function startChecking() {
        console.log('启动检查...');
        const timer = setInterval(checkVideoProgress, 60000); // 每10秒检查
        checkVideoProgress(); // 立即检查一次
    }

    // 使用MutationObserver监控DOM变化
    function observePage() {
        console.log('开始监控页面变化...');
        const observer = new MutationObserver((mutations, obs) => {
            const videoHint = document.querySelector('.video-hint');
            if (videoHint) {
                const spans = videoHint.querySelectorAll('span');
                console.log('监控中检测到.video-hint，span数量:', spans.length, '内容:', Array.from(spans).map(s => s.textContent.trim()));
                let timeCount = 0;
                for (let span of spans) {
                    if (/^\d{2}:\d{2}:\d{2}$/.test(span.textContent.trim())) {
                        timeCount++;
                    }
                }
                if (timeCount >= 2) {
                    console.log('检测到包含两个时间的.video-hint，启动检查');
                    startChecking();
                    obs.disconnect();
                }
            }
        });
        observer.observe(document.body, { childList: true, subtree: true, attributes: true });
    }

    // 初始化
    function init() {
        const checkInterval = setInterval(() => {
            const videoHint = document.querySelector('.video-hint');
            if (videoHint) {
                const spans = videoHint.querySelectorAll('span');
                console.log('定时检查找到.video-hint，span数量:', spans.length, '内容:', Array.from(spans).map(s => s.textContent.trim()));
                let timeCount = 0;
                for (let span of spans) {
                    if (/^\d{2}:\d{2}:\d{2}$/.test(span.textContent.trim())) {
                        timeCount++;
                    }
                }
                if (timeCount >= 2) {
                    console.log('定时检查找到包含两个时间的.video-hint，启动检查');
                    startChecking();
                    clearInterval(checkInterval);
                }
            }
        }, 1000);

        observePage();
    }

    // 页面加载后启动
    if (document.readyState === 'complete' || document.readyState === 'interactive') {
        console.log('页面初始状态:', document.readyState);
        setTimeout(init, 3000);
    } else {
        window.addEventListener('load', () => {
            console.log('页面加载完成，开始初始化');
            setTimeout(init, 3000);
        });
    }
})();