// ==UserScript==
// @name         华医网自动播放下一课
// @namespace    https://91huayi.com/
// @version      3.1.1
// @description  适配华医网 cme1.91huayi.com，自动播放、自动静音、自动下一课
// @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';

    setTimeout(() => {
        createPanel();
        runAuto();
    }, 1500);

    let enabled = true;

    function createPanel() {
        if (document.getElementById('auto-panel')) return;

        const panel = document.createElement('div');
        panel.id = 'auto-panel';
        panel.style.cssText = 'position:fixed;top:20px;right:20px;z-index:999999;width:240px;background:#fff;border-radius:10px;box-shadow:0 5px 15px rgba(0,0,0,0.1);padding:12px;font-size:12px;font-family:sans-serif;';

        panel.innerHTML = `
<div style="font-weight:bold;margin-bottom:8px;">华医网自动播放 v3.1</div>
<div style="display:flex;gap:6px;margin-bottom:8px;">
<button id="start" style="flex:1;padding:6px;border:none;border-radius:6px;background:#095;background:#fff;color:#095;border:1px solid #095;cursor:pointer;">启动</button>
<button id="stop" style="flex:1;padding:6px;border:none;border-radius:6px;background:#fff;color:c00;border:1px solid #c00;cursor:pointer;">停止</button>
</div>
<div style="color:#666;">状态: <span id="status">运行中</span></div>
`;

        document.body.appendChild(panel);

        drag(panel);

        document.getElementById('start').onclick = () => {
            enabled = true;
            document.getElementById('status').textContent = '运行中';
            document.getElementById('status').style.color = '#095';
        };

        document.getElementById('stop').onclick = () => {
            enabled = false;
            document.getElementById('status').textContent = '已停止';
            document.getElementById('status').style.color = '#c00';
        };
    }

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

    function runAuto() {
        setInterval(() => {
            if (!enabled) return;

            // 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(() => {});
            });

            // 自动关闭弹窗
            document.querySelectorAll('.close,.btn-close,[class*="close"]').forEach(b => {
                if (b.offsetParent) b.click();
            });

            // 视频完成 → 自动下一课
            videos.forEach(v => {
                if (v.duration > 0 && v.currentTime / v.duration > 0.98) {
                    setTimeout(clickNext, 1200);
                }
            });
        }, 800);
    }

    function clickNext() {
        const selectors = [
            '.course-item:not(.finished) .course-title',
            '.lesson-item:not(.played)',
            'button:contains("下一课")',
            'button:contains("继续")',
            'button:contains("下一步")',
            '[class*="next"]', '.next', '.btn-next'
        ];

        for (const s of selectors) {
            const els = document.querySelectorAll(s);
            for (const el of els) {
                if (el.offsetParent) {
                    el.click();
                    return;
                }
            }
        }
    }
})();