// ==UserScript==
// @name         煤炭行业现代远程教育培训网自动播放下一节视频（2026年7月精确稳定版）
// @namespace    http://tampermonkey.net/
// @version      0.7
// @description  自动播放 + 精确识别当前课程 + 自动下一节 + 5分钟卡死检测和自动刷新进度
// @author       yhr + ChatGPT
// @match        https://www.coaledu.net/*/coursePlay.html*
// @run-at       document-end
// @require      https://code.jquery.com/jquery-3.6.0.min.js
// @grant        GM_notification
// ==/UserScript==

this.$ = this.jQuery = jQuery.noConflict(true);

(function () {
    'use strict';

    let lastClickTime = 0;
    let refreshTimer = null;

    /** ======================
     * 1. 关闭弹窗/遮罩
     * ====================== */
    setInterval(function () {
        $("span:contains('继续')").each(function () {
            const btn = $(this).parent("button");
            if (btn.is(":visible")) btn.click();
        });

        $(".verifyFaceMask").hide();
        $(".ccMask").hide();
    }, 1000);

    /** ======================
     * 2. 主播放逻辑
     * ====================== */
    setInterval(function () {
        const current = $("a.nowrap.on.subset-class");
        if (!current.length) return;
        autoPlay(current);
    }, 3000);

    function autoPlay(current) {
        const now = Date.now();
        if (now - lastClickTime < 1200) return;

        const li = current.closest("li");
        const percentText = li.find(".finish-percent").first().text().trim();
        const percent = parseFloat(percentText) || 0;

        if (percent < 100) {
            current[0].click();
            lastClickTime = now;

            setTimeout(() => {
                const video = document.querySelector("video");
                if (video && video.paused) video.play().catch(() => {});
                const playBtn = $(".ccH5PlayBtn");
                if (playBtn.is(":visible")) playBtn.click();
            }, 1200);
            return;
        }

        const next = li.nextAll("li").first().find("a.nowrap.subset-class");

        if (next.length) {
            next[0].click();
            lastClickTime = now;

            setTimeout(() => {
                const video = document.querySelector("video");
                if (video && video.paused) video.play().catch(() => {});
            }, 1200);
        } else {
            GM_notification({
                text: "全部课程完成",
                title: "学习结束"
            });
        }
    }

    /** ======================
     * 3. 5分钟卡死恢复（优化版）
     * ====================== */
    let lastProgress = null;
    let stuckCount = 0;

    setInterval(function () {
        const currentLi = $("a.nowrap.on.subset-class").closest("li");
        if (!currentLi.length) return;

        const percentText = currentLi.find(".finish-percent").first().text().trim();
        const currentProgress = parseFloat(percentText) || 0;

        if (lastProgress === null) {
            lastProgress = currentProgress;
            return;
        }

        if (currentProgress === lastProgress) {
            stuckCount++;
        } else {
            stuckCount = 0;
            lastProgress = currentProgress;
        }

        if (stuckCount > 30) {
            console.log("5分钟无进度，恢复播放");
            stuckCount = 0;
            const video = document.querySelector("video");
            if (video) video.play().catch(() => {});
            const playBtn = $(".ccH5PlayBtn");
            if (playBtn.is(":visible")) playBtn.click();
        }
    }, 10000);

    /** ======================
     * 4. 风控弹窗处理
     * ====================== */
    setInterval(function () {
        const box = document.querySelector(".playback-guard-message-box");
        if (box && box.offsetParent !== null) {
            const btn = box.querySelector(".el-button--primary");
            if (btn) btn.click();

            setTimeout(() => {
                const video = document.querySelector("video");
                if (video) video.play().catch(() => {});
                const playBtn = $(".ccH5PlayBtn");
                if (playBtn.is(":visible")) playBtn.click();
            }, 2000);
        }
    }, 2000);

    setInterval(function () {
        const btn = document.querySelector(".info-button.watch");
        if (btn && btn.offsetParent !== null) {
            console.log("🎯 点击立即观看");
            setTimeout(() => {
                btn.click();
            }, 500);
        }
    }, 1500);

    /** ======================
     * 5. 每4-6分钟循环刷新页面（优化版）
     * ====================== */
    function getRandomRefreshTime() {
        const minMinutes = 4;
        const maxMinutes = 6;
        const minMs = minMinutes * 60 * 1000;
        const maxMs = maxMinutes * 60 * 1000;
        return Math.floor(Math.random() * (maxMs - minMs + 1)) + minMs;
    }

    function scheduleRefresh() {
        // 清除旧定时器
        if (refreshTimer) {
            clearTimeout(refreshTimer);
            refreshTimer = null;
        }

        const delay = getRandomRefreshTime();
        console.log(`⏰ 下次刷新将在 ${Math.round(delay / 60000)} 分钟后刷新`);
        
        refreshTimer = setTimeout(() => {
            console.log("🔄 执行页面刷新");
            location.reload();
        }, delay);
    }

    // 启动刷新循环
    scheduleRefresh();

})();