📄 markdown_file_server.js

🏠 首页 
const http = require('http');
const fs = require('fs');
const path = require('path');
const url = require('url');
const https = require('https');

const PORT = 8081;
const DIRECTORY = '/data/ai-output';

// 动态加载 marked.js
let marked = null;
function loadMarked(callback) {
    if (marked) {
        callback();
        return;
    }
    
    // 下载 marked.min.js
    const markedUrl = 'https://cdn.jsdelivr.net/npm/marked/marked.min.js';
    https.get(markedUrl, (res) => {
        let data = '';
        res.on('data', chunk => data += chunk);
        res.on('end', () => {
            try {
                // 简单的marked实现（备用）
                marked = require('./marked_simple.js');
                console.log('✅ 使用简化版Markdown解析器');
                callback();
            } catch (e) {
                console.log('⚠️ 使用基础Markdown解析');
                marked = basicMarkdown;
                callback();
            }
        });
    }).on('error', () => {
        marked = basicMarkdown;
        callback();
    });
}

// 基础Markdown解析器
function basicMarkdown(text) {
    return text
        // 转义HTML
        .replace(/&/g, '&')
        .replace(/</g, '&lt;')
        .replace(/>/g, '&gt;')
        // 标题
        .replace(/^#### (.*$)/gim, '<h4>$1</h4>')
        .replace(/^### (.*$)/gim, '<h3>$1</h3>')
        .replace(/^## (.*$)/gim, '<h2>$1</h2>')
        .replace(/^# (.*$)/gim, '<h1>$1</h1>')
        // 粗体斜体
        .replace(/\*\*\*(.*?)\*\*\*/g, '<strong><em>$1</em></strong>')
        .replace(/\*\*(.*?)\*\*/g, '<strong>$1</strong>')
        .replace(/\*(.*?)\*/g, '<em>$1</em>')
        // 代码块
        .replace(/```(\w*)\n([\s\S]*?)```/g, '<pre><code class="language-$1">$2</code></pre>')
        .replace(/`(.*?)`/g, '<code>$1</code>')
        // 链接
        .replace(/\[([^\]]+)\]\(([^)]+)\)/g, '<a href="$2" target="_blank">$1</a>')
        // 图片
        .replace(/!\[([^\]]*)\]\(([^)]+)\)/g, '<img src="$2" alt="$1" style="max-width:100%;">')
        // 待办事项
        .replace(/^- \[ \] (.*)$/gim, '<li class="todo"><input type="checkbox" disabled> $1</li>')
        .replace(/^- \[x\] (.*)$/gim, '<li class="todo"><input type="checkbox" checked disabled> $1</li>')
        // 列表
        .replace(/^- (.*)$/gim, '<li>$1</li>')
        .replace(/^\d+\. (.*)$/gim, '<li>$1</li>')
        // 引用
        .replace(/^> (.*)$/gim, '<blockquote>$1</blockquote>')
        // 水平线
        .replace(/^---$/gim, '<hr>')
        // 表格（简单实现）
        .replace(/^\|(.+)\|$/gm, (match, content) => {
            const cells = content.split('|').map(c => c.trim());
            if (cells.every(c => /^[-:]+$/.test(c))) return ''; // 分隔行
            const tag = 'td';
            return '<tr>' + cells.map(c => `<${tag}>${c}</${tag}>`).join('') + '</tr>';
        })
        // 段落
        .replace(/\n\n/g, '</p><p>')
        .replace(/\n/g, '<br>');
}

// 生成HTML页面（使用CDN加载marked.js和highlight.js）
function generatePage(markdownContent, filename) {
    return `<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>${filename}</title>
    
    <!-- 引入 marked.js -->
    <script src="https://cdn.jsdelivr.net/npm/marked/marked.min.js"></script>
    
    <!-- 引入 highlight.js 代码高亮 -->
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/highlight.js@11.9.0/styles/github-dark.min.css">
    <script src="https://cdn.jsdelivr.net/npm/highlight.js@11.9.0/lib/core.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/highlight.js@11.9.0/lib/languages/javascript.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/highlight.js@11.9.0/lib/languages/python.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/highlight.js@11.9.0/lib/languages/bash.min.js"></script>
    
    <style>
        * { margin: 0; padding: 0; box-sizing: border-box; }
        
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            line-height: 1.8;
            color: #333;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            padding: 20px;
        }
        
        .container {
            max-width: 1000px;
            margin: 0 auto;
            background: white;
            border-radius: 12px;
            box-shadow: 0 20px 60px rgba(0,0,0,0.3);
            overflow: hidden;
        }
        
        .header {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
        }
        
        .header h1 {
            font-size: 24px;
            font-weight: 600;
        }
        
        .toolbar {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }
        
        .btn {
            display: inline-block;
            padding: 10px 20px;
            background: white;
            color: #667eea;
            text-decoration: none;
            border-radius: 6px;
            font-weight: 500;
            transition: all 0.3s;
            border: none;
            cursor: pointer;
        }
        
        .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(0,0,0,0.2);
        }
        
        .btn-primary {
            background: #00C853;
            color: white;
        }
        
        .content {
            padding: 40px;
        }
        
        /* Markdown 样式 */
        .markdown-body h1 { 
            color: #2c3e50; 
            border-bottom: 3px solid #667eea; 
            padding-bottom: 15px; 
            margin: 30px 0 20px 0;
            font-size: 32px;
        }
        
        .markdown-body h2 { 
            color: #34495e; 
            border-bottom: 2px solid #95a5a6; 
            padding-bottom: 10px; 
            margin: 25px 0 15px 0;
            font-size: 26px;
        }
        
        .markdown-body h3 { 
            color: #7f8c8d; 
            margin: 20px 0 10px 0;
            font-size: 22px;
        }
        
        .markdown-body h4 {
            color: #95a5a6;
            margin: 15px 0 10px 0;
            font-size: 18px;
        }
        
        .markdown-body p { 
            margin: 15px 0; 
            line-height: 1.8;
        }
        
        .markdown-body table { 
            border-collapse: collapse; 
            width: 100%; 
            margin: 20px 0; 
            font-size: 14px;
            overflow-x: auto;
            display: block;
        }
        
        .markdown-body th, .markdown-body td { 
            border: 1px solid #e0e0e0; 
            padding: 12px 15px; 
            text-align: left; 
        }
        
        .markdown-body th { 
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white; 
            font-weight: 600;
        }
        
        .markdown-body tr:nth-child(even) { background-color: #f9f9f9; }
        .markdown-body tr:hover { background-color: #f0f0ff; }
        
        .markdown-body code { 
            background: #f4f4f4; 
            padding: 3px 8px; 
            border-radius: 4px; 
            font-size: 0.9em;
            font-family: 'Courier New', Consolas, monospace;
            color: #e74c3c;
        }
        
        .markdown-body pre { 
            background: #2c3e50; 
            color: #ecf0f1; 
            padding: 20px; 
            border-radius: 8px; 
            overflow-x: auto;
            margin: 20px 0;
        }
        
        .markdown-body pre code { 
            background: none; 
            padding: 0; 
            color: #ecf0f1;
            font-size: 14px;
        }
        
        .markdown-body blockquote { 
            border-left: 5px solid #667eea; 
            padding: 15px 20px; 
            margin: 20px 0; 
            color: #7f8c8d;
            background: #f9f9f9;
            border-radius: 0 8px 8px 0;
        }
        
        .markdown-body a { 
            color: #667eea; 
            text-decoration: none; 
            border-bottom: 1px dashed #667eea;
        }
        
        .markdown-body a:hover { 
            color: #764ba2;
            border-bottom-style: solid;
        }
        
        .markdown-body hr {
            border: none;
            height: 2px;
            background: linear-gradient(to right, transparent, #667eea, transparent);
            margin: 30px 0;
        }
        
        .markdown-body ul, .markdown-body ol {
            padding-left: 30px;
            margin: 15px 0;
        }
        
        .markdown-body li {
            margin: 8px 0;
            line-height: 1.6;
        }
        
        .markdown-body .todo {
            list-style: none;
            margin-left: -30px;
        }
        
        .markdown-body img {
            max-width: 100%;
            border-radius: 8px;
            margin: 15px 0;
        }
        
        .footer {
            text-align: center;
            padding: 20px;
            background: #f5f5f5;
            color: #999;
            font-size: 14px;
        }
        
        @media (max-width: 768px) {
            .header {
                flex-direction: column;
                align-items: flex-start;
            }
            
            .content {
                padding: 20px;
            }
            
            .markdown-body h1 { font-size: 24px; }
            .markdown-body h2 { font-size: 20px; }
            .markdown-body h3 { font-size: 18px; }
        }
    </style>
</head>
<body>
    <div class="container">
        <div class="header">
            <h1>📄 ${filename}</h1>
            <div class="toolbar">
                <button class="btn" onclick="toggleRaw()">📝 切换源码</button>
                <a href="${filename}" download class="btn btn-primary">⬇️ 下载文件</a>
            </div>
        </div>
        <div class="content">
            <div id="rendered" class="markdown-body"></div>
            <div id="raw" style="display:none;">
                <pre style="white-space: pre-wrap; word-wrap: break-word; background: #f5f5f5; padding: 20px; border-radius: 8px;">${markdownContent.replace(/</g, '&lt;').replace(/>/g, '&gt;')}</pre>
            </div>
        </div>
        <div class="footer">
            由增强版文件服务器生成 • ${new Date().toLocaleString('zh-CN')} • 支持Markdown渲染
        </div>
    </div>
    
    <script>
        // 配置 marked
        marked.setOptions({
            breaks: true,
            gfm: true,
            highlight: function(code, lang) {
                if (lang && hljs.getLanguage(lang)) {
                    return hljs.highlight(code, { language: lang }).value;
                }
                return code;
            }
        });
        
        // 渲染Markdown
        const markdownContent = ${JSON.stringify(markdownContent)};
        document.getElementById('rendered').innerHTML = marked.parse(markdownContent);
        
        // 切换源码/渲染视图
        let showRaw = false;
        function toggleRaw() {
            showRaw = !showRaw;
            document.getElementById('rendered').style.display = showRaw ? 'none' : 'block';
            document.getElementById('raw').style.display = showRaw ? 'block' : 'none';
        }
    </script>
</body>
</html>`;
}

const server = http.createServer((req, res) => {
    const parsedUrl = url.parse(req.url, true);
    const pathname = decodeURIComponent(parsedUrl.pathname);
    const filePath = path.join(DIRECTORY, pathname);
    
    console.log(`[${new Date().toLocaleString('zh-CN')}] ${req.method} ${pathname}`);
    
    // 检查文件是否存在
    if (!fs.existsSync(filePath)) {
        res.writeHead(404, {'Content-Type': 'text/html; charset=utf-8'});
        res.end('<h1>404 - 文件未找到</h1><p><a href="/">返回首页</a></p>');
        return;
    }
    
    const stat = fs.statSync(filePath);
    
    // 如果是目录，列出文件
    if (stat.isDirectory()) {
        const files = fs.readdirSync(filePath);
        const list = files.map(f => {
            const fstat = fs.statSync(path.join(filePath, f));
            const icon = fstat.isDirectory() ? '📁' : '📄';
            const size = fstat.isFile() ? `(${(fstat.size / 1024).toFixed(1)} KB)` : '';
            return `<li style="margin: 10px 0;"><a href="${path.join(pathname, f)}" style="color: #667eea; text-decoration: none; border-bottom: 1px dashed #667eea;">${icon} ${f}</a> <span style="color: #999; font-size: 12px;">${size}</span></li>`;
        }).join('');
        
        const html = generatePage(`<h2>📁 目录列表</h2><ul style="list-style: none; padding-left: 0;">${list}</ul>`, '文件列表');
        res.writeHead(200, {'Content-Type': 'text/html; charset=utf-8'});
        res.end(html);
        return;
    }
    
    // 读取文件
    const content = fs.readFileSync(filePath, 'utf-8');
    const ext = path.extname(filePath).toLowerCase();
    
    // 如果是Markdown且没有raw参数，渲染为HTML
    if (ext === '.md' && !parsedUrl.query.raw) {
        const html = generatePage(content, path.basename(filePath));
        res.writeHead(200, {'Content-Type': 'text/html; charset=utf-8'});
        res.end(html);
    } else {
        // 其他文件或raw模式，直接返回
        const mimeTypes = {
            '.md': 'text/markdown; charset=utf-8',
            '.txt': 'text/plain; charset=utf-8',
            '.html': 'text/html; charset=utf-8',
            '.css': 'text/css; charset=utf-8',
            '.js': 'application/javascript; charset=utf-8',
            '.json': 'application/json; charset=utf-8',
            '.png': 'image/png',
            '.jpg': 'image/jpeg',
            '.jpeg': 'image/jpeg',
            '.gif': 'image/gif',
            '.pdf': 'application/pdf',
            '.zip': 'application/zip'
        };
        
        const mimeType = mimeTypes[ext] || 'application/octet-stream';
        res.writeHead(200, {
            'Content-Type': mimeType,
            'Content-Length': stat.size,
            'Access-Control-Allow-Origin': '*'
        });
        res.end(content);
    }
});

// 启动服务器
loadMarked(() => {
    server.listen(PORT, () => {
        console.log('✅ 增强版文件服务器运行中');
        console.log(`📁 服务目录: ${DIRECTORY}`);
        console.log(`🌐 访问地址: http://proxy.mossai.icu:${PORT}`);
        console.log('🎨 功能: Markdown渲染(使用marked.js)、代码高亮、UTF-8编码、美观界面');
    });
});