// ==UserScript==
// @name         锦江享学堂o2o自动化学习（防检测版）
// @namespace    https://i-learning.jinjianghotels.com.cn/o2o/
// @version      0.4
// @description  自动播放视频并自动点击“下一个”按钮，集成防挂机检测模块
// @author       Assistant
// @match        https://i-learning.jinjianghotels.com.cn/o2o/*
// @grant        none
// @license      MIT
// @icon         https://www.google.com/s2/favicons?sz=64&domain=jinjianghotels.com.cn
// ==/UserScript==

(function() {
    'use strict';

    console.log('%c[锦江刷课] 防检测增强版脚本已启动...', 'color: #00adb5; font-size: 16px; font-weight: bold;');

    /******************************* 防挂机检测模块 *******************************/
    // 1. 重写 pause 方法，阻止视频被强制暂停
    const originalPause = HTMLVideoElement.prototype.pause;
    HTMLVideoElement.prototype.pause = function() {
        // 调用原始方法时，检查是否因为切屏等原因触发，根据实际情况决定是否真的暂停
        // 这里我们完全阻止，让视频始终可以播放（谨慎使用，可能导致其他问题）
        console.warn('[防检测] 拦截到 pause 调用，已阻止');
        return false;
    };
    // 2. 拦截 visibilitychange 等切屏事件
    // 移除所有已绑定的 visibilitychange 监听器（此方法效果有限）
    const removeAllListeners = () => {
        const events = ['visibilitychange', 'blur', 'focus', 'focusin', 'focusout', 'pagehide', 'pageshow'];
        events.forEach(event => {
            window.removeEventListener(event, () => {});
            document.removeEventListener(event, () => {});
        });
    };
    removeAllListeners();
    // 阻止新的事件监听器注册
    const originalAddEventListener = EventTarget.prototype.addEventListener;
    EventTarget.prototype.addEventListener = function(type, listener, options) {
        const blockedEvents = ['visibilitychange', 'blur', 'focus', 'focusin', 'focusout', 'pagehide', 'pageshow'];
        if (blockedEvents.includes(type)) {
            console.warn(`[防检测] 拦截了 ${type} 事件监听器的注册`);
            return;
        }
        return originalAddEventListener.call(this, type, listener, options);
    };
    // 在捕获阶段终止事件传播
    const blockEvent = (e) => {
        e.stopImmediatePropagation();
        e.preventDefault();
    };
    const eventsToBlock = ['visibilitychange', 'blur', 'focus', 'focusin', 'focusout', 'pagehide', 'pageshow'];
    eventsToBlock.forEach(event => {
        window.addEventListener(event, blockEvent, true);
        document.addEventListener(event, blockEvent, true);
    });
    // 3. 覆盖页面可见性 API 的返回值
    Object.defineProperty(document, 'hidden', { get: () => false });
    Object.defineProperty(document, 'visibilityState', { get: () => 'visible' });
    document.hasFocus = () => true;
    // 可选：模拟鼠标移动
    const simulateMouseMove = () => {
        const event = new MouseEvent('mousemove', {
            view: window,
            bubbles: true,
            cancelable: true,
            clientX: Math.random() * window.innerWidth,
            clientY: Math.random() * window.innerHeight
        });
        document.dispatchEvent(event);
    };
    // 每 30 秒模拟一次鼠标移动
    setInterval(simulateMouseMove, 30000);

    /******************************* 视频播放与自动切换模块 *******************************/
    function findVideoElement() {
        let video = document.querySelector('video');
        if (video && video.readyState > 0) return video;
        const videoPlayer = document.querySelector('.video-js, .prism-player, .plyr, .jwplayer');
        if (videoPlayer) {
            video = videoPlayer.querySelector('video');
            if (video) return video;
        }
        return null;
    }

    function setupVideo() {
        const video = findVideoElement();
        if (!video) {
            console.log('[锦江刷课] 未找到有效的视频元素');
            return false;
        }
        video.muted = false;
        video.play().catch(e => console.warn('[锦江刷课] 自动播放被阻止:', e));
        if (video.playbackRate) {
            video.playbackRate = 1.5;
            console.log('[锦江刷课] 播放速度设为 1.5 倍');
        }
        return true;
    }

    function findAndClickNext() {
        const nextKeywords = ['下一个', '下一课', '下一节', '完成学习', '确定', '继续'];
        const allButtons = document.querySelectorAll('button, a, span, div');
        for (let btn of allButtons) {
            const btnText = btn.innerText.trim();
            if (nextKeywords.some(keyword => btnText === keyword || btnText.includes(keyword))) {
                console.log(`[锦江刷课] 检测到“${btnText}”按钮，尝试点击`);
                btn.click();
                setTimeout(() => setupVideo(), 3000);
                return true;
            }
        }
        return false;
    }

    let lastReportedProgress = 0;
    setInterval(() => {
        const video = findVideoElement();
        if (video && video.duration) {
            const currentPercent = (video.currentTime / video.duration * 100).toFixed(2);
            if (Math.abs(currentPercent - lastReportedProgress) > 1) {
                console.log(`[锦江刷课] 当前播放进度：${currentPercent}%`);
                lastReportedProgress = currentPercent;
            }
            if (currentPercent > 98 && !video.paused) {
                findAndClickNext();
            }
        }
    }, 10000);

    /******************************* 脚本启动 *******************************/
    setTimeout(() => {
        setupVideo();
    }, 3000);
})();