// ==UserScript==
// @name         联大自动刷课【最终精准防验证版】
// @version      21.1
// @description  1.15倍速（精准适配计时器）+ 防身份核验 + 防弹窗 + 基准跳转+ 自动下一集
// @author       yyf
// @match        *://*.jxjypt.cn/*
// @grant        none
// @run-at       document-end
// ==/UserScript==

(function() {
    'use strict';
    console.log('✅ 联大最终精准版启动（1.15倍速，防验证）');

    let hasJumped = false;
    let currentBaseSection = null;
    const PLAYBACK_RATE = 1.15; // 🔧 1.15倍速：最稳，不超平台限制
    const JUMP_DELAY = 2000;    // 2秒延迟

    // ==============================================
    // 1. 模拟人工：彻底防止“无操作检测”
    // ==============================================
    function simulateHumanActivity() {
        window.focus(); // 切桌面也保持焦点
        document.dispatchEvent(new MouseEvent('mousemove', {
            clientX: 300 + Math.random()*50,
            clientY: 300 + Math.random()*50,
            bubbles: true
        }));
        // 随机触发一次键盘事件（彻底骗过后台）
        document.dispatchEvent(new KeyboardEvent('keydown', { key: ' ', bubbles: true }));
        setTimeout(() => document.body.click(), 200);
    }
    setInterval(simulateHumanActivity, 15000); // 15秒一次，更稳

    // ==============================================
    // 2. 自动关闭：AI助手弹窗/验证框/红色提示
    // ==============================================
    function autoCloseVerify() {
        // 专门识别你截图的“AI助教进入对话”红色框
        const aiPopup = document.querySelector('.alipay-layer-close, .layui-layer-close, [class*="dialog"] button');
        if (aiPopup) {
            aiPopup.click();
            console.log('✅ 自动关闭AI/验证弹窗');
            return;
        }

        // 普通确定/继续按钮
        const btn = document.querySelector('button:contains("确定"), button:contains("继续"), button:contains("我知道了")');
        if (btn) btn.click();
    }
    setInterval(autoCloseVerify, 800);

    // ==============================================
    // 3. 监听点击：更新基准节
    // ==============================================
    document.addEventListener('click', (e) => {
        const target = e.target.closest('dd');
        if (target && target.textContent.includes('节') && target.querySelector('i')) {
            currentBaseSection = target;
            hasJumped = false;
            console.log(`🔄 基准节：${currentBaseSection.textContent.trim()}`);
        }
    }, true);

    // ==============================================
    // 4. 核心：等待视频就绪 + 1.15倍速
    // ==============================================
    async function autoPlaySync() {
        const video = document.querySelector('video');
        if (!video) return;

        // 等待视频完全加载
        if (video.readyState < 4) {
            await new Promise(resolve => {
                const check = () => video.readyState >= 4 ? resolve() : requestAnimationFrame(check);
                check();
            });
        }

        // 自动播放
        if (video.paused) {
            try { await video.play(); } catch (e) {}
        }

        // 强制锁定1.15倍速
        if (video.playbackRate !== PLAYBACK_RATE) {
            video.playbackRate = PLAYBACK_RATE;
            console.log(`▶ 锁定${PLAYBACK_RATE}倍速`);
        }
        video.muted = true;
    }

    // ==============================================
    // 5. 核心逻辑：等待视频结束 + 2秒延迟跳转
    // ==============================================
    function checkAndJump() {
        const video = document.querySelector('video');
        if (!video || !video.duration) return;

        autoPlaySync();

        // 99%进度触发跳转（给平台计时器留足最后几秒）
        const progress = video.currentTime / video.duration;
        if (progress < 0.99) {
            hasJumped = false;
            return;
        }
        if (hasJumped) return;

        console.log(`⏳ 视频结束，${JUMP_DELAY/1000}秒后跳转...`);
        hasJumped = true;

        setTimeout(() => {
            const allSections = Array.from(document.querySelectorAll('dd'))
                .filter(dd => dd.textContent.includes('节') && dd.querySelector('i'));
            if (allSections.length === 0) return;

            // 找当前基准节
            let currentIdx = -1;
            if (currentBaseSection) {
                currentIdx = allSections.findIndex(sec => sec === currentBaseSection);
            }
            if (currentIdx === -1) {
                allSections.forEach((sec, idx) => {
                    const icon = sec.querySelector('i, img');
                    if (icon && (icon.src?.includes('green') || sec.style.color === 'green')) {
                        currentIdx = idx;
                        currentBaseSection = sec;
                    }
                });
            }
            if (currentIdx === -1) currentIdx = 0;

            const nextIdx = currentIdx + 1;
            if (nextIdx >= allSections.length) return;

            const nextSec = allSections[nextIdx];
            console.log(`👉 跳转到：${nextSec.textContent.trim()}`);
            nextSec.click();

            currentBaseSection = nextSec;
            setTimeout(() => { hasJumped = false; autoPlaySync(); }, 2000);
        }, JUMP_DELAY);
    }

    window.addEventListener('load', () => setTimeout(autoPlaySync, 1500));
    setInterval(checkAndJump, 1000);
})();