package client

import (
	"fmt"
	"net/http"
	"net/url"
)

type Client struct {
	mode string
}

func NewClient(mode string) *Client {
	return &Client{mode: mode}
}

func (c *Client) Start(configPath string) error {
	fmt.Printf("🎯 Starting client in %s mode...\n", c.mode)
	fmt.Printf("📁 Loading config from: %s\n", configPath)
	
	switch c.mode {
	case "http":
		return c.startHTTPProxy()
	case "global":
		return c.startGlobalProxy()
	case "transparent":
		return c.startTransparentProxy()
	default:
		return fmt.Errorf("unsupported mode: %s", c.mode)
	}
}

func (c *Client) startHTTPProxy() error {
	fmt.Println("🌐 Starting HTTP proxy mode...")
	fmt.Println("💡 Setting up HTTP proxy on :8080")
	
	// 简单的HTTP代理实现示例
	proxyURL, _ := url.Parse("socks5://127.0.0.1:1080")
	
	server := &http.Server{
		Addr: ":8080",
		Handler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
			fmt.Printf("📝 Proxy request: %s %s\n", r.Method, r.URL)
			w.WriteHeader(http.StatusOK)
			w.Write([]byte(fmt.Sprintf("Proxied via %s", proxyURL)))
		}),
	}
	
	fmt.Println("✅ HTTP proxy started on :8080")
	return server.ListenAndServe()
}

func (c *Client) startGlobalProxy() error {
	fmt.Println("🌍 Starting global proxy mode...")
	fmt.Println("💡 This will configure system-wide proxy settings")
	fmt.Println("⚠️  Requires administrator privileges")
	
	// TODO: 实现全局代理设置
	select {} // 保持运行
}

func (c *Client) startTransparentProxy() error {
	fmt.Println("🔍 Starting transparent proxy mode...")
	fmt.Println("💡 This will intercept network traffic transparently")
	fmt.Println("⚠️  Requires root privileges and iptables support")
	
	// TODO: 实现透明代理
	select {} // 保持运行
}