package main

import (
	"fmt"
	"net"
	"os"
)

func main() {
	l, err := net.Listen("tcp", "0.0.0.0:4221")
	if err != nil {
		fmt.Println("Failed to bind to port 4221")
		os.Exit(1)
	}

	conn, err := l.Accept()
	if err != nil {
		fmt.Println("Error accepting connection: ", err.Error())
		os.Exit(1)
	}

	reader := NewRequestReader(conn)

	target, err := reader.Target()
	if err != nil {
		fmt.Println("Error getting target: ", err.Error())
		os.Exit(1)
	}

	if target == "/" {
		_, err = conn.Write([]byte("HTTP/1.1 200 OK\r\n\r\n"))
		if err != nil {
			fmt.Println("Error connection write: ", err.Error())
		}
	} else {
		_, err = conn.Write([]byte("HTTP/1.1 404 Not Found\r\n\r\n"))
		if err != nil {
			fmt.Println("Error connection write: ", err.Error())
		}
	}
}