module main

import net.http
import hono

fn main() {
	// ===== 1. 应用初始化 =====
	mut app := hono.Hono.new()
	
	// ===== 2. 中间件配置 =====
	
	// 日志中间件
	app.use(fn (mut c hono.Context, next fn (mut hono.Context) http.Response) http.Response {
		println('[LOG] ${c.req.method} ${c.url}')
		return next(mut c)
	})
	
	// 认证中间件
	app.use(fn (mut c hono.Context, next fn (mut hono.Context) http.Response) http.Response {
		println("url path: ${c.url}")
		token := c.query['token']
		if c.url != "/" &&  token == '' {
			c.status(401)
			return c.json('{"error": "Unauthorized", "message": "Token required"}')
		}
		return next(mut c)
	})
	
	// ===== 3. 静态文件服务中间件 =====
	
	// 默认静态文件服务（./public 目录）
	app.use(hono.serve_static_default())
	
	// 资源文件服务（./static 目录）
	app.use(hono.serve_static_path('/assets', './static'))
	
	// 上传文件服务（./uploads 目录）
	options := hono.StaticOptions{
		root: './uploads'
		path: '/files'
		index: 'index.html'
		dotfiles: false
		etag: true
		last_modified: true
		max_age: 3600  // 1小时缓存
		headers: {
			'X-Served-By': 'V-Hono'
			'X-Static-Files': 'true'
		}
	}
	app.use(hono.serve_static(options))
	
	// ===== 4. 基础路由 =====
	
	// 根路径 - 欢迎页面
	app.get('/', fn (mut c hono.Context) http.Response {
		html_content := '<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>V-Hono 完整示例</title>
    <style>
        body { font-family: Arial, sans-serif; max-width: 1200px; margin: 0 auto; padding: 20px; }
        .section { margin: 20px 0; padding: 15px; border: 1px solid #ddd; border-radius: 5px; }
        .endpoint { background: #f5f5f5; padding: 10px; margin: 5px 0; border-radius: 3px; }
        .feature { color: #2c5aa0; font-weight: bold; }
        .static-section { background: #e8f4fd; border-left: 4px solid #2196F3; }
        .api-section { background: #f3e5f5; border-left: 4px solid #9C27B0; }
        .file-section { background: #e8f5e8; border-left: 4px solid #4CAF50; }
        .route-section { background: #fff3e0; border-left: 4px solid #FF9800; }
    </style>
</head>
<body>
    <h1>🚀 V-Hono 完整示例</h1>
    <p>A lightweight web framework for V with static file serving</p>
    
    <div class="section static-section">
        <h2>📁 静态文件服务</h2>
        <div class="endpoint">
            <strong>默认目录:</strong> <code>/</code> → <code>./public</code>
        </div>
        <div class="endpoint">
            <strong>资源目录:</strong> <code>/assets</code> → <code>./static</code>
        </div>
        <div class="endpoint">
            <strong>文件目录:</strong> <code>/files</code> → <code>./uploads</code>
        </div>
        <p><strong>测试文件:</strong></p>
        <ul>
            <li><a href="/test.txt">/test.txt</a> (来自 ./public/test.txt)</li>
            <li><a href="/assets/style.css">/assets/style.css</a> (来自 ./static/style.css)</li>
            <li><a href="/files/sample.json">/files/sample.json</a> (来自 ./uploads/sample.json)</li>
        </ul>
    </div>
    
    <div class="section api-section">
        <h2>🔧 API 端点</h2>
        <div class="endpoint">
            <strong>健康检查:</strong> <a href="/api/health">/api/health</a>
        </div>
        <div class="endpoint">
            <strong>静态文件状态:</strong> <a href="/api/status">/api/status</a>
        </div>
        <div class="endpoint">
            <strong>静态文件信息:</strong> <a href="/api/static-info">/api/static-info</a>
        </div>
        <div class="endpoint">
            <strong>基础路由:</strong> <a href="/hello">/hello</a>
        </div>
    </div>
    
    <div class="section file-section">
        <h2>📄 文件服务端点</h2>
        <div class="endpoint">
            <strong>基本文件服务:</strong> <a href="/file/test.txt">/file/test.txt</a>
        </div>
        <div class="endpoint">
            <strong>缓存文件服务:</strong> <a href="/file-cached/test.txt">/file-cached/test.txt</a>
        </div>
        <div class="endpoint">
            <strong>文件下载:</strong> <a href="/download/downloadable.txt">/download/downloadable.txt</a>
        </div>
        <div class="endpoint">
            <strong>图片文件服务:</strong> <a href="/image/style.css">/image/style.css</a>
        </div>
        <div class="endpoint">
            <strong>安全文件服务:</strong> <a href="/safe-file/test.txt">/safe-file/test.txt</a>
        </div>
    </div>
    
    <div class="section route-section">
        <h2>🎯 动态路由示例</h2>
        <div class="endpoint">
            <strong>单参数:</strong> <a href="/users/123">/users/123</a>
        </div>
        <div class="endpoint">
            <strong>多参数:</strong> <a href="/posts/456/comments/789">/posts/456/comments/789</a>
        </div>
        <div class="endpoint">
            <strong>嵌套参数:</strong> <a href="/api/users/101/posts/202">/api/users/101/posts/202</a>
        </div>
    </div>
    
    <div class="section">
        <h2>✨ 特性</h2>
        <ul>
            <li class="feature">🚀 高性能路由系统（Trie + Hybrid）</li>
            <li class="feature">🛡️ 路径遍历攻击防护</li>
            <li class="feature">📁 自动索引文件支持</li>
            <li class="feature">🔒 点文件访问控制</li>
            <li class="feature">🏷️ ETag 和 Last-Modified 支持</li>
            <li class="feature">💾 可配置缓存策略</li>
            <li class="feature">🎯 智能 Content-Type 检测</li>
            <li class="feature">🔧 洋葱模型中间件</li>
            <li class="feature">🔄 支持所有 HTTP 方法</li>
            <li class="feature">📊 路由性能统计</li>
        </ul>
    </div>
    
    <div class="section">
        <h2>🧪 测试命令</h2>
        <pre>
# 静态文件测试
curl http://localhost:8080/test.txt
curl http://localhost:8080/assets/style.css
curl http://localhost:8080/files/sample.json

# 文件服务测试
curl http://localhost:8080/file/test.txt
curl http://localhost:8080/file-cached/test.txt
curl http://localhost:8080/download/downloadable.txt
curl http://localhost:8080/image/style.css
curl http://localhost:8080/safe-file/test.txt

# API 测试
curl http://localhost:8080/api/health
curl http://localhost:8080/api/status
curl http://localhost:8080/hello

# 动态路由测试
curl http://localhost:8080/users/123
curl http://localhost:8080/posts/456/comments/789

# POST 测试
curl -X POST http://localhost:8080/api/users -d "{\\"name\\":\\"John\\"}"
curl -X POST "http://localhost:8080/api/test/create/456?token=abc123" -d "{\\"name\\":\\"Test\\"}"
        </pre>
    </div>
</body>
</html>'
		return c.html(html_content)
	})
	
	// 基础路由
	app.get('/hello', fn (mut c hono.Context) http.Response {
		return c.text('Hello, World!')
	})
	
	// ===== 5. API 路由 =====
	
	// 健康检查
	app.get('/api/health', fn (mut c hono.Context) http.Response {
		c.status(200)
		return c.json('{"status": "ok", "message": "Health check passed"}')
	})
	
	// 静态文件服务状态
	app.get('/api/status', fn (mut c hono.Context) http.Response {
		return c.json('{"status": "ok", "static_files": "enabled"}')
	})
	
	// 静态文件服务信息
	app.get('/api/static-info', fn (mut c hono.Context) http.Response {
		return c.json('{
			"static_directories": [
				{"path": "/", "root": "./public"},
				{"path": "/assets", "root": "./static"},
				{"path": "/files", "root": "./uploads"}
			],
			"features": [
				"Path traversal protection",
				"Auto index files",
				"ETag support",
				"Last-Modified headers",
				"Configurable caching",
				"Custom headers"
			]
		}')
	})
	
	// ===== 6. 动态路由 =====
	
	// 单参数路由
	app.get('/users/:id', fn (mut c hono.Context) http.Response {
		user_id := c.params['id']
		return c.json('{"user_id": "${user_id}", "name": "John Doe"}')
	})
	
	// 多参数路由
	app.get('/posts/:id/comments/:comment_id', fn (mut c hono.Context) http.Response {
		post_id := c.params['id']
		comment_id := c.params['comment_id']
		return c.json('{"post_id": "${post_id}", "comment_id": "${comment_id}", "content": "Great post!"}')
	})
	
	// 嵌套参数路由
	app.get('/api/users/:user_id/posts/:post_id', fn (mut c hono.Context) http.Response {
		user_id := c.params['user_id']
		post_id := c.params['post_id']
		return c.json('{"user_id": "${user_id}", "post_id": "${post_id}", "title": "Sample Post"}')
	})
	
	// ===== 7. HTTP 方法示例 =====
	
	// POST 请求
	app.post('/api/users', fn (mut c hono.Context) http.Response {
		println('=== POST 请求信息 ===')
		println('请求体: ${c.body}')
		println('查询参数: ${c.query}')
		
		c.status(201)
		return c.json('{"message": "User created", "data": "${c.body}"}')
	})
	
	// 带参数的 POST 请求
	app.post('/api/users/:id', fn (mut c hono.Context) http.Response {
		user_id := c.params['id']
		
		println('=== 带参数的 POST 请求信息 ===')
		println('用户ID: ${user_id}')
		println('请求体: ${c.body}')
		println('查询参数: ${c.query}')
		
		c.status(200)
		return c.json('{"message": "User updated", "user_id": "${user_id}", "data": "${c.body}"}')
	})
	
	// 复杂的 POST 请求
	app.post('/api/test/:action/:id', fn (mut c hono.Context) http.Response {
		action := c.params['action']
		id := c.params['id']
		
		println('=== 复杂 POST 请求信息 ===')
		println('动作: ${action}')
		println('ID: ${id}')
		println('查询参数: ${c.query}')
		println('请求体: ${c.body}')
		
		// 构建响应JSON
		mut response := '{'
		response += '"message": "复杂测试",'
		response += '"params": {'
		response += '"action": "${action}",'
		response += '"id": "${id}"'
		response += '},'
		response += '"query": {'
		
		// 添加查询参数
		mut query_count := 0
		for key, value in c.query {
			if query_count > 0 {
				response += ','
			}
			response += '"${key}": "${value}"'
			query_count++
		}
		
		response += '},'
		response += '"body": "${c.body}"'
		response += '}'
		
		c.status(200)
		return c.json(response)
	})
	
	// PUT 请求示例
	app.put('/api/users/:id', fn (mut c hono.Context) http.Response {
		user_id := c.params['id']
		c.status(200)
		return c.json('{"message": "User replaced", "user_id": "${user_id}", "data": "${c.body}"}')
	})
	
	// DELETE 请求示例
	app.delete('/api/users/:id', fn (mut c hono.Context) http.Response {
		user_id := c.params['id']
		c.status(204)
		return c.text('')
	})
	
	// PATCH 请求示例
	app.patch('/api/users/:id', fn (mut c hono.Context) http.Response {
		user_id := c.params['id']
		c.status(200)
		return c.json('{"message": "User partially updated", "user_id": "${user_id}", "data": "${c.body}"}')
	})
	
	// HEAD 请求示例
	app.head('/api/users/:id', fn (mut c hono.Context) http.Response {
		user_id := c.params['id']
		c.headers['X-User-ID'] = user_id
		c.status(200)
		return c.text('')
	})
	
	// OPTIONS 请求示例
	app.options('/api/users/:id', fn (mut c hono.Context) http.Response {
		c.headers['Allow'] = 'GET, POST, PUT, DELETE, PATCH, HEAD, OPTIONS'
		c.headers['Access-Control-Allow-Origin'] = '*'
		c.headers['Access-Control-Allow-Methods'] = 'GET, POST, PUT, DELETE, PATCH, HEAD, OPTIONS'
		c.status(200)
		return c.text('')
	})
	
	// ===== 8. 文件服务功能 =====
	
	// 基本文件服务示例
	app.get('/file/:filename', fn (mut c hono.Context) http.Response {
		filename := c.params['filename']
		file_path := 'public/${filename}'
		return c.file(file_path)
	})
	
	// 带选项的文件服务示例
	app.get('/file-cached/:filename', fn (mut c hono.Context) http.Response {
		filename := c.params['filename']
		file_path := 'public/${filename}'
		
		options := hono.FileOptions{
			max_age: 3600  // 缓存1小时
			headers: {
				'X-Served-By': 'v-hono'
			}
		}
		
		return c.file_with_options(file_path, options)
	})
	
	// 自定义Content-Type的文件服务
	app.get('/download/:filename', fn (mut c hono.Context) http.Response {
		filename := c.params['filename']
		file_path := 'uploads/${filename}'
		
		options := hono.FileOptions{
			content_type: 'application/octet-stream'
			headers: {
				'Content-Disposition': 'attachment; filename="${filename}"'
			}
		}
		
		return c.file_with_options(file_path, options)
	})
	
	// 图片文件服务示例
	app.get('/image/:filename', fn (mut c hono.Context) http.Response {
		filename := c.params['filename']
		file_path := 'static/${filename}'
		
		options := hono.FileOptions{
			max_age: 86400  // 缓存24小时
			headers: {
				'X-Image-Type': 'static'
			}
		}
		
		return c.file_with_options(file_path, options)
	})
	
	// 禁用缓存的文件服务
	app.get('/dynamic/:filename', fn (mut c hono.Context) http.Response {
		filename := c.params['filename']
		file_path := 'dynamic/${filename}'
		
		options := hono.FileOptions{
			no_cache: true
			headers: {
				'X-Dynamic': 'true'
			}
		}
		
		return c.file_with_options(file_path, options)
	})
	
	// ===== 9. 错误处理示例 =====
	
	// 安全文件服务
	app.get('/safe-file/:filename', fn (mut c hono.Context) http.Response {
		filename := c.params['filename']
		
		// 安全检查：只允许访问特定目录
		if filename.contains('..') || filename.starts_with('/') {
			c.status(403)
			return c.text('Access denied')
		}
		
		file_path := 'public/${filename}'
		return c.file(file_path)
	})
	
	// 404 错误处理
	app.get('/**', fn (mut c hono.Context) http.Response {
		c.status(404)
		return c.json('{"error": "Not Found", "message": "The requested resource was not found"}')
	})
	
	// ===== 10. 服务器启动 =====
	
	println('🚀 V-Hono 完整示例启动中...')
	println('📍 服务器地址: http://localhost:8080')
	println('')
	println('📁 静态文件服务:')
	println('  - 默认: ./public (访问路径: /)')
	println('  - 资源: ./static (访问路径: /assets)')
	println('  - 文件: ./uploads (访问路径: /files)')
	println('')
	println('🔧 API 端点:')
	println('  - GET /api/health')
	println('  - GET /api/status')
	println('  - GET /api/static-info')
	println('  - GET /hello')
	println('')
	println('📄 文件服务端点:')
	println('  - GET /file/:filename - 基本文件服务')
	println('  - GET /file-cached/:filename - 缓存文件服务')
	println('  - GET /download/:filename - 文件下载')
	println('  - GET /image/:filename - 图片文件服务')
	println('  - GET /dynamic/:filename - 动态文件服务')
	println('  - GET /safe-file/:filename - 安全文件服务')
	println('')
	println('🎯 动态路由:')
	println('  - GET /users/123')
	println('  - GET /posts/456/comments/789')
	println('  - GET /api/users/101/posts/202')
	println('')
	println('📝 HTTP 方法示例:')
	println('  - POST /api/users')
	println('  - POST /api/users/123')
	println('  - POST /api/test/create/456')
	println('  - PUT /api/users/123')
	println('  - DELETE /api/users/123')
	println('  - PATCH /api/users/123')
	println('  - HEAD /api/users/123')
	println('  - OPTIONS /api/users/123')
	println('')
	println('🧪 测试命令示例:')
	println('  # 静态文件测试')
	println('  curl http://localhost:8080/test.txt')
	println('  curl http://localhost:8080/assets/style.css')
	println('  curl http://localhost:8080/files/sample.json')
	println('')
	println('  # 文件服务测试')
	println('  curl http://localhost:8080/file/test.txt')
	println('  curl http://localhost:8080/file-cached/test.txt')
	println('  curl http://localhost:8080/download/downloadable.txt')
	println('  curl http://localhost:8080/image/style.css')
	println('  curl http://localhost:8080/safe-file/test.txt')
	println('')
	println('  # API 测试')
	println('  curl http://localhost:8080/api/health')
	println('  curl http://localhost:8080/api/status')
	println('  curl http://localhost:8080/hello')
	println('')
	println('  # 动态路由测试')
	println('  curl http://localhost:8080/users/123')
	println('  curl http://localhost:8080/posts/456/comments/789')
	println('')
	println('  # POST 测试')
	println('  curl -X POST http://localhost:8080/api/users -d "{\\"name\\":\\"John\\"}"')
	println('  curl -X POST "http://localhost:8080/api/test/create/456?token=abc123" -d "{\\"name\\":\\"Test\\"}"')
	
	app.listen(':8080')
}