package sltcpsrv

import (
	"bufio"
	"flag"
	"fmt"
	"io"
	"log"
	"net"
	"strings"
)

var (
	isDebug = flag.Bool("d", false, "Turn on debugging")
)

func ListenAndServe(port int) {
	ln, err := net.Listen("tcp", fmt.Sprintf(":%d", port))
	if err != nil {
		log.Fatal(err)
	}

	log.Printf("Listening on %v\n", ln.Addr())

	for {
		conn, err := ln.Accept()
		if err != nil {
			log.Printf("WARN: Failed to accept connection!: %+v\n", err)
			continue
		}

		go handleConnection(conn)
	}
}

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

	connBuf := bufio.NewReader(conn)

	for {
		line, err := connBuf.ReadString('\n')
		if err != nil {
			if err == io.EOF {
				break
			}

			log.Printf("Failed to read line: %+v\n", err)
			return
		}

		msg := newMessage([]byte(strings.TrimSpace(line)))
		if msg != nil {
			fmt.Printf("%v: %+v\n", conn.RemoteAddr(), msg)
		}
	}
}