// ==UserScript==
// @name         全国煤炭行业现代远程教育培训网自动播放
// @namespace    http://tampermonkey.net/
// @version      1.0.0
// @author       zhkali
// @author       更新时间：2026-10-19 21:27:00
// @description  自动播放、自动下一节、普通弹窗处理、5分钟卡死恢复、随机刷新、完成通知
// @match        https://www.coaledu.net/*
// @match        https://coaledu.net/*
// @match        http://www.coaledu.net/*
// @match        http://coaledu.net/*
// @run-at       document-idle
// @grant        GM_notification
// ==/UserScript==

(function () {
    'use strict';

    // ==================================================
    // 1. 参数配置
    // ==================================================

    const CONFIG = {
        mainInterval: 3000,
        monitorInterval: 10000,

        stuckTimeout: 5 * 60 * 1000,
        playCooldown: 2500,
        actionCooldown: 2500,

        // 普通提示处理
        handleContinuePrompt: true,

        // 立即观看按钮处理
        handleWatchButton: true,

        // 随机刷新：保留原版4至6分钟机制
        autoRefresh: true,
        minRefreshMinutes: 4,
        maxRefreshMinutes: 6,

        // 发生课程切换或播放恢复后，至少等待此时间再刷新
        refreshConflictDelay: 30 * 1000,

        // 验证提示期间每隔多久重新检查刷新条件
        verificationRetryDelay: 60 * 1000,

        debug: true
    };

    const SELECTORS = {
        currentCourse: 'a.nowrap.on.subset-class',
        courseLink: 'a.nowrap.subset-class',
        progress: '.finish-percent',
        video: 'video',
        playButton: '.ccH5PlayBtn',
        watchButton: '.info-button.watch',

        // 仅检测需要人工处理的验证提示
        verification: [
            '.verifyFaceMask',
            '.playback-guard-message-box'
        ]
    };

    // ==================================================
    // 2. 运行状态
    // ==================================================

    let activeCourseKey = '';
    let completedCourseKey = '';
    let activatedCourseKey = '';

    let lastActionAt = 0;
    let lastPlayAttemptAt = 0;
    let lastCriticalActionAt = 0;

    let lastMovementAt = Date.now();
    let lastVideoTime = null;
    let lastProgress = null;

    let verificationNotified = false;
    let finishedNotified = false;
    let missingCourseLogged = false;

    let refreshTimer = null;

    const clickedWatchButtons = new WeakSet();
    const clickedContinueButtons = new WeakSet();

    // ==================================================
    // 3. 日志、通知和页面状态
    // ==================================================

    function log(...args) {
        if (CONFIG.debug) {
            console.log('[煤炭教育助手]', ...args);
        }
    }

    function notify(message, title = '课程助手') {
        log(message);

        try {
            if (typeof GM_notification === 'function') {
                GM_notification({
                    title,
                    text: message,
                    timeout: 5000
                });
            }
        } catch (error) {
            console.warn('[煤炭教育助手] 通知失败：', error);
        }
    }

    function showStatus(message) {
        let panel = document.getElementById(
            'coaledu-auto-play-status'
        );

        if (!panel) {
            panel = document.createElement('div');
            panel.id = 'coaledu-auto-play-status';

            Object.assign(panel.style, {
                position: 'fixed',
                right: '12px',
                bottom: '12px',
                zIndex: '2147483647',
                maxWidth: '360px',
                padding: '10px 14px',
                borderRadius: '6px',
                background: '#263238',
                color: '#fff',
                fontSize: '13px',
                lineHeight: '1.5',
                boxShadow: '0 2px 8px rgba(0,0,0,.25)',
                pointerEvents: 'none'
            });

            document.body.appendChild(panel);
        }

        panel.textContent = message;
    }

    function isVisible(element) {
        if (!element || !element.isConnected) {
            return false;
        }

        const style = getComputedStyle(element);

        return style.display !== 'none'
            && style.visibility !== 'hidden'
            && Number(style.opacity) !== 0
            && element.getClientRects().length > 0;
    }

    function markCriticalAction(reason) {
        lastCriticalActionAt = Date.now();
        log('关键操作：', reason);
    }

    // ==================================================
    // 4. 课程识别和进度读取
    // ==================================================

    function getCurrentCourse() {
        return document.querySelector(
            SELECTORS.currentCourse
        );
    }

    function getCourseKey(link) {
        if (!link) return '';

        // 同时使用 href 与文字，避免多个 # 链接被当成同一课程
        const href = link.getAttribute('href') || '';
        const text = (link.textContent || '').trim();

        return `${href}|${text}`;
    }

    function getCourseProgress(courseLi) {
        if (!courseLi) return null;

        const element = courseLi.querySelector(
            SELECTORS.progress
        );

        if (!element) return null;

        const text = element.textContent.trim();
        const match = text.match(/(\d+(?:\.\d+)?)/);

        return match ? Number(match[1]) : null;
    }

    function getVideo() {
        return document.querySelector(SELECTORS.video);
    }

    function getVideoTime() {
        const video = getVideo();

        if (!video || !Number.isFinite(video.currentTime)) {
            return null;
        }

        return video.currentTime;
    }

    // ==================================================
    // 5. 验证与风控提示检测
    // ==================================================

    function needsManualCheck() {
        const detected = SELECTORS.verification.some(
            selector => {
                return Array.from(
                    document.querySelectorAll(selector)
                ).some(isVisible);
            }
        );

        // 不将通用 .ccMask 单独判定为验证弹窗，
        // 因为它也可能是普通播放器遮罩。

        if (detected) {
            if (!verificationNotified) {
                notify(
                    '检测到身份验证或风控提示，请手动处理后继续。',
                    '需要人工处理'
                );

                verificationNotified = true;
            }

            showStatus('检测到验证提示，请手动处理');
            return true;
        }

        verificationNotified = false;
        return false;
    }

    // ==================================================
    // 6. 播放器控制与自动播放
    // ==================================================

    function clickPlayerButton() {
        if (needsManualCheck()) return false;

        const button = document.querySelector(
            SELECTORS.playButton
        );

        if (isVisible(button)) {
            button.click();
            log('已尝试点击播放器播放按钮');
            return true;
        }

        return false;
    }

    function tryPlay(force = false) {
        if (needsManualCheck()) return;

        const now = Date.now();

        if (
            !force &&
            now - lastPlayAttemptAt < CONFIG.playCooldown
        ) {
            return;
        }

        lastPlayAttemptAt = now;

        const video = getVideo();

        if (video && video.paused) {
            try {
                const result = video.play();

                if (
                    result &&
                    typeof result.catch === 'function'
                ) {
                    result.catch(error => {
                        log('视频自动播放未成功：', error);

                        if (!needsManualCheck()) {
                            clickPlayerButton();
                        }
                    });
                }

                return;
            } catch (error) {
                log('调用 video.play() 失败：', error);
                clickPlayerButton();
                return;
            }
        }

        // 页面尚未找到 video 时，尝试播放器播放按钮
        if (!video) {
            clickPlayerButton();
        }
    }

    // ==================================================
    // 7. 普通“继续”提示
    // ==================================================

    function handleContinuePrompt() {
        if (!CONFIG.handleContinuePrompt) return;
        if (needsManualCheck()) return;

        const elements = document.querySelectorAll(
            'button, button span'
        );

        for (const element of elements) {
            if (!isVisible(element)) continue;

            const button = element.matches('button')
                ? element
                : element.closest('button');

            if (!button || !isVisible(button)) continue;
            if (clickedContinueButtons.has(button)) continue;

            // 不触碰人脸验证或风控弹窗内的按钮
            if (
                button.closest(
                    '.verifyFaceMask, .playback-guard-message-box'
                )
            ) {
                continue;
            }

            const text = (
                button.innerText ||
                button.textContent ||
                ''
            ).trim();

            if (text.includes('继续')) {
                clickedContinueButtons.add(button);
                button.click();

                log('已点击普通“继续”按钮');
                break;
            }
        }
    }

    // ==================================================
    // 8. “立即观看”按钮
    // ==================================================

    function handleWatchButton() {
        if (!CONFIG.handleWatchButton) return;
        if (needsManualCheck()) return;

        const button = document.querySelector(
            SELECTORS.watchButton
        );

        if (!isVisible(button)) return;
        if (clickedWatchButtons.has(button)) return;

        // 同一个 DOM 按钮只自动尝试一次
        clickedWatchButtons.add(button);

        log('检测到“立即观看”按钮');

        setTimeout(() => {
            if (!needsManualCheck() && isVisible(button)) {
                button.click();
                log('已点击“立即观看”按钮');
            }
        }, 500);
    }

    // ==================================================
    // 9. 查找下一节课程
    // ==================================================

    function findNextCourse(courseLi) {
        if (!courseLi) return null;

        let sibling = courseLi.nextElementSibling;

        while (sibling) {
            if (sibling.matches('li')) {
                const link = sibling.querySelector(
                    SELECTORS.courseLink
                );

                if (link) return link;
            }

            sibling = sibling.nextElementSibling;
        }

        return null;
    }

    // ==================================================
    // 10. 主逻辑：播放、切换、完成通知
    // ==================================================

    function mainLoop() {
        if (needsManualCheck()) return;

        handleContinuePrompt();
        handleWatchButton();

        const current = getCurrentCourse();

        if (!current) {
            showStatus('脚本已运行，但暂未识别当前课程');

            if (!missingCourseLogged) {
                log(
                    '未找到当前课程选择器：',
                    SELECTORS.currentCourse
                );
                log('当前网址：', location.href);

                missingCourseLogged = true;
            }

            return;
        }

        missingCourseLogged = false;

        const courseLi = current.closest('li');

        if (!courseLi) {
            log('已找到课程链接，但未找到所属 li 元素');
            return;
        }

        const courseKey = getCourseKey(current);
        const progress = getCourseProgress(courseLi);
        const now = Date.now();

        // 当前课程发生变化时，重置进度监控基准
        if (courseKey !== activeCourseKey) {
            activeCourseKey = courseKey;
            lastMovementAt = now;
            lastVideoTime = getVideoTime();
            lastProgress = progress;

            markCriticalAction('识别到课程切换');

            log('当前课程：', current.textContent.trim());

            showStatus(
                '正在运行：' + current.textContent.trim()
            );

            // 新课程首次识别时，如果尚无视频和播放器按钮，
            // 只尝试点击当前课程一次，避免反复重载。
            if (
                !getVideo() &&
                !document.querySelector(SELECTORS.playButton) &&
                activatedCourseKey !== courseKey
            ) {
                activatedCourseKey = courseKey;

                log('尚未找到播放器，尝试打开当前课程');
                current.click();

                setTimeout(() => {
                    if (!needsManualCheck()) {
                        tryPlay(true);
                    }
                }, 1500);

                return;
            }
        }

        // 进度明确达到100%后，才切换下一节
        if (progress !== null && progress >= 100) {
            if (completedCourseKey === courseKey) {
                return;
            }

            if (now - lastActionAt < CONFIG.actionCooldown) {
                return;
            }

            const next = findNextCourse(courseLi);

            if (next) {
                completedCourseKey = courseKey;
                lastActionAt = now;

                markCriticalAction('切换下一节课程');

                log(
                    '当前课程已完成，切换下一节：',
                    next.textContent.trim()
                );

                next.click();

                setTimeout(() => {
                    if (!needsManualCheck()) {
                        tryPlay(true);
                    }
                }, 1500);

            } else {
                completedCourseKey = courseKey;

                if (!finishedNotified) {
                    finishedNotified = true;

                    notify(
                        '当前课程列表已完成。',
                        '学习结束'
                    );

                    showStatus('当前课程列表已完成');
                }
            }

            return;
        }

        // 当前课程尚未完成时，尝试恢复正常播放
        tryPlay();
    }

    // ==================================================
    // 11. 5分钟停滞检测与恢复
    // ==================================================

    function monitorProgress() {
        if (needsManualCheck()) {
            // 验证期间暂停停滞计时
            lastMovementAt = Date.now();
            lastVideoTime = null;
            return;
        }

        const current = getCurrentCourse();
        if (!current) return;

        const courseKey = getCourseKey(current);

        if (courseKey !== activeCourseKey) return;

        const courseLi = current.closest('li');
        const progress = getCourseProgress(courseLi);
        const videoTime = getVideoTime();

        let moved = false;

        // 检测实际视频播放时间变化
        if (
            videoTime !== null &&
            lastVideoTime !== null &&
            videoTime > lastVideoTime + 0.2
        ) {
            moved = true;
        }

        // 检测网站显示的课程完成百分比变化
        if (
            progress !== null &&
            lastProgress !== null &&
            progress > lastProgress
        ) {
            moved = true;
        }

        if (moved) {
            lastMovementAt = Date.now();
            log('已检测到视频或课程进度变化');
        }

        if (videoTime !== null) {
            lastVideoTime = videoTime;
        }

        if (progress !== null) {
            lastProgress = progress;
        }

        if (
            Date.now() - lastMovementAt >=
            CONFIG.stuckTimeout
        ) {
            log('超过5分钟没有检测到进度变化，尝试恢复播放');

            markCriticalAction('尝试恢复停滞视频');

            tryPlay(true);

            notify(
                '超过5分钟没有检测到播放进度，已尝试恢复。请检查播放器、网络或验证提示。',
                '播放停滞提醒'
            );

            // 防止接下来的每10秒都重复恢复
            lastMovementAt = Date.now();
        }
    }

    // ==================================================
    // 12. 独立随机刷新调度器
    // ==================================================

    function getRandomRefreshDelay() {
        const min =
            CONFIG.minRefreshMinutes * 60 * 1000;

        const max =
            CONFIG.maxRefreshMinutes * 60 * 1000;

        return Math.floor(
            Math.random() * (max - min + 1)
        ) + min;
    }

    function scheduleRefresh(delay = null) {
        if (!CONFIG.autoRefresh) return;
        if (finishedNotified) return;

        if (refreshTimer !== null) {
            clearTimeout(refreshTimer);
            refreshTimer = null;
        }

        const nextDelay = delay === null
            ? getRandomRefreshDelay()
            : delay;

        log(
            '下一次刷新定时检查约在',
            Math.round(nextDelay / 60000),
            '分钟后'
        );

        refreshTimer = setTimeout(() => {
            refreshTimer = null;

            // 验证提示出现时不刷新，延后再检查
            if (needsManualCheck()) {
                scheduleRefresh(
                    CONFIG.verificationRetryDelay
                );
                return;
            }

            // 防止刷新与课程切换或播放恢复同时发生
            const timeSinceCriticalAction =
                Date.now() - lastCriticalActionAt;

            if (
                lastCriticalActionAt > 0 &&
                timeSinceCriticalAction <
                    CONFIG.refreshConflictDelay
            ) {
                const remaining =
                    CONFIG.refreshConflictDelay -
                    timeSinceCriticalAction;

                log(
                    '刚发生切换或恢复操作，延后刷新',
                    Math.ceil(remaining / 1000),
                    '秒'
                );

                scheduleRefresh(remaining + 1000);
                return;
            }

            if (finishedNotified) {
                log('课程列表已完成，停止刷新');
                return;
            }

            log('执行独立定时刷新');
            location.reload();

        }, nextDelay);
    }

    // ==================================================
    // 13. 启动
    // ==================================================

    if (!/coursePlay\.html/i.test(location.pathname)) {
        console.log(
            '[煤炭教育助手] 当前不是 coursePlay.html 页面，不执行。'
        );
        return;
    }

    log('脚本初始化成功');
    log('当前网址：', location.href);

    showStatus('课程助手已启动，正在检测页面');

    mainLoop();

    setInterval(mainLoop, CONFIG.mainInterval);
    setInterval(monitorProgress, CONFIG.monitorInterval);

    if (CONFIG.autoRefresh) {
        scheduleRefresh();
    }

})();
// 更新时间：2026-10-19 21:30:00