// ==UserScript==
// @name         北京市东城区卫生教育发展中心 - 智能连续学习（倍速+防检测）
// @namespace    http://tampermonkey.net/
// @version      1.5
// @description  北京市东城区学习脚本,这是一个初级功能版本,连续观看。后续版本将更新秒课，秒答题功能~敬请期待
// @author       VX：hapens1986
// @match        https://bjdc.wsglw.net/train/courseware/cc*
// @match         https://bjdcpx.wsglw.net/train/courseware/list?cid=*
// @match         https://bjdcpx.wsglw.net/train/courseware/cc?cwid=*
// @grant        GM_xmlhttpRequest
// @grant        unsafeWindow
// @run-at       document-end
// ==/UserScript==


(function() {
    'use strict';

    // ===== 配置 =====
    const SAFE_RATE = 1;          // 安全倍速
    const MIN_WATCH = 0.95;          // 最小观看比例
    const HEARTBEAT_INTERVAL = 25000;// 心跳间隔(ms)
    // ================

    let video = document.querySelector('video');
    let isPolyv = !!window.player;

    // 1. 安全设置倍速
    const safeSetRate = () => {
        if (isPolyv) {
            try {
                window.player.j2s_setPlaybackRate?.(SAFE_RATE);
                window.player.setPlaybackRate?.(SAFE_RATE);
            } catch(e) {}
        }
        if (video) {
            try {
                video._realPlaybackRate = SAFE_RATE;
                video.defaultPlaybackRate = SAFE_RATE;
            } catch(e) {}
        }
    };

    // 2. 模拟真实观看行为
    const simulateHuman = () => {
        let lastReportTime = 0;
        const reportProgress = () => {
            const now = Date.now();
            if (now - lastReportTime < HEARTBEAT_INTERVAL) return;

            const duration = video?.duration ||
                parseInt(unsafeWindow.course_ware_duration) ||
                60 * 45; // 默认45分钟

            const fakeTime = Math.min(
                duration * MIN_WATCH,
                lastReportTime / 1000 * SAFE_RATE
            );

            console.log(`[模拟进度] 上报时间: ${Math.floor(fakeTime)}s`);
            lastReportTime = now;
        };

        setInterval(reportProgress, 5000);
    };

    // 3. 等待视频加载
    const waitForVideo = (retry = 0) => {
        if (retry > 15) return;

        video = document.querySelector('video');
        isPolyv = !!window.player;

        if (video || isPolyv) {
            safeSetRate();
            simulateHuman();
            console.log('[系统] 初始化完成，安全模式已启动');
        } else {
            setTimeout(() => waitForVideo(retry + 1), 1000);
        }
    };

    waitForVideo();
})();