// ==UserScript==
// @name         华医网课程自动切换工具
// @namespace    https://91huayi.com/
// @version      3.2.0
// @description  自动播放、静音、关闭弹窗、点击继续学习、自动下一课 | 带控制面板
// @author       auto
// @match        https://cme1.91huayi.com/cme/*
// @match        https://cme1.91huayi.com/*
// @match        *://*.91huayi.com/*
// @grant        none
// @run-at       document-end
// ==/UserScript==

(function() {
    'use strict';

    let enabled = true;
    let logBox = null;

    // 延迟启动保证页面加载完
    setTimeout(() => {
        createPanel();
        startLoop();
    }, 1600);

    // 创建控制面板（可拖动）
    function createPanel() {
        const panel = document.createElement('div');
        panel.id = 'huayi-auto-panel';
        panel.style.cssText = `
            position:fixed; top:20px; right:20px; z-index:999999;
            width:260px; background:#fff; border-radius:10px;
            box-shadow:0 5px 20px rgba(0,0,0,0.15); padding:12px;
            font-size:12px; font-family:system-ui; cursor:move;
        `;

        panel.innerHTML = `
            <div style="font-weight:bold; margin-bottom:8px;">华医网全自动 v5.0</div>
            <div style="display:flex; gap:6px; margin-bottom:8px;">
                <button id="start-btn" style="flex:1; padding:6px; border:none; border-radius:6px; background:#060; color:#fff; cursor:pointer;">启动</button>
                <button id="stop-btn" style="flex:1; padding:6px; border:none; border-radius:6px; background:#c00; color:#fff; cursor:pointer;">停止</button>
            </div>
            <div style="margin-bottom:6px;">状态：<span id="status-text" style="color:#060">运行中</span></div>
            <div style="height:70px; overflow-y:auto; background:#f6f6f6; padding:4px; border-radius:4px; font-size:11px;" id="log"></div>
        `;

        document.body.appendChild(panel);
        makeDraggable(panel);
        logBox = document.getElementById('log');
        addLog('脚本已启动');

        // 按钮事件
        document.getElementById('start-btn').onclick = () => {
            enabled = true;
            document.getElementById('status-text').innerHTML = '运行中';
            document.getElementById('status-text').style.color = '#060';
            addLog('已启动');
        };

        document.getElementById('stop-btn').onclick = () => {
            enabled = false;
            document.getElementById('status-text').innerHTML = '已停止';
            document.getElementById('status-text').style.color = '#c00';
            addLog('已停止');
        };
    }

    // 拖动面板
    function makeDraggable(el) {
        let drag = false, x, y;
        el.addEventListener('mousedown', e => {
            drag = true;
            x = e.clientX - el.getBoundingClientRect().left;
            y = e.clientY - el.getBoundingClientRect().top;
        });
        document.addEventListener('mousemove', e => {
            if (!drag) return;
            el.style.left = (e.clientX - x) + 'px';
            el.style.top = (e.clientY - y) + 'px';
            el.style.right = 'auto';
        });
        document.addEventListener('mouseup', () => drag = false);
    }

    // 日志输出
    function addLog(text) {
        if (!logBox) return;
        const d = new Date();
        const time = `${d.getHours().toString().padStart(2,'0')}:${d.getMinutes().toString().padStart(2,'0')}:${d.getSeconds().toString().padStart(2,'0')}`;
        logBox.innerHTML += `[${time}] ${text}\n`;
        logBox.scrollTop = logBox.scrollHeight;
    }

    // 主循环
    function startLoop() {
        setInterval(() => {
            if (!enabled) return;

            // 1. 自动静音 + 自动播放
            const videos = document.querySelectorAll('video');
            videos.forEach(v => {
                v.muted = true;
                if (v.paused && v.duration > 0) {
                    v.play().catch(() => {});
                }
            });

            // 2. 自动关闭弹窗
            autoClosePopup();

            // 3. 自动点【继续学习】按钮（视频弹窗必备）
            autoClickContinue();

            // 4. 视频播完 → 下一课
            autoPlayNext();

        }, 700);
    }

    // 自动关闭弹窗
    function autoClosePopup() {
        const closeButtons = document.querySelectorAll(`
            .close, .btn-close, [class*="close"], [id*="close"],
            button:contains("确定"), button:contains("知道了")
        `);
        closeButtons.forEach(btn => {
            if (btn.offsetParent) {
                btn.click();
                addLog('已关闭弹窗');
            }
        });
    }

    // ============== 你要的【自动点继续学习】 ==============
    function autoClickContinue() {
        const buttons = document.querySelectorAll(`
            button:contains("继续学习"),
            button:contains("继续"),
            button:contains("继续观看"),
            .continue, .btn-continue,
            [class*="continue"], [id*="continue"]
        `);

        buttons.forEach(btn => {
            if (btn.offsetParent && btn.textContent.includes('继续')) {
                btn.click();
                addLog('已点击【继续学习】');
            }
        });
    }

    // ============== 视频播完自动下一课 ==============
    function autoPlayNext() {
        const videos = document.querySelectorAll('video');
        videos.forEach(v => {
            if (v.duration > 0 && v.currentTime / v.duration >= 0.96) {
                setTimeout(() => {
                    goNext();
                    addLog('视频已完成 → 跳转到下一课');
                }, 1200);
            }
        });
    }

    function goNext() {
        const nextSelectors = [
            '.next', '.btn-next', '.next-lesson', '.lesson-next',
            'button:contains("下一课")',
            'button:contains("下一步")',
            'button:contains("继续学习")',
            '.course-item:not(.finished) .title',
            '.lesson-item:not(.played) .name'
        ];

        for (const sel of nextSelectors) {
            const list = document.querySelectorAll(sel);
            for (const el of list) {
                if (el.offsetParent) {
                    el.click();
                    addLog('已点击下一课');
                    return;
                }
            }
        }
    }

})();