package main

import (
	"net"
)

func main() {
	port := ":8888"
	tcpAddr, err := net.ResolveTCPAddr("tcp", port)
	if err != nil {
		panic(err)
	}

	listner, err := net.ListenTCP("tcp", tcpAddr)
	if err != nil {
		panic(err)
	}

	for {
		conn, err := listner.Accept()
		if err != nil {
			continue
		}

		go handle(conn)
	}
}

func handle(conn net.Conn) {
	defer conn.Close()

	conn.Write([]byte("Command: "))
	command := readLine(conn)
	if command == "hello" {
		conn.Write([]byte("Hello\n"))
	} else {
		conn.Write([]byte("Good bye\n"))
	}

}

func readLine(conn net.Conn) string {
	buf := make([]byte, 64)
	read_len, err := conn.Read(buf)
	if err != nil {
		return ""
	} else if read_len == 0 {
		return ""
	}

	command := buf[:read_len-1]
	return string(command)
}