package main

import (
	"bufio"
	"fmt"
	"log"
	"net"
	"strings"
	"time"
)

func echo(c net.Conn, shout string, t time.Duration) {
	for _ = range 3 {
		fmt.Fprintln(c, "\t", strings.ToUpper(shout))
		time.Sleep(t)
	}
}

func handleConn(conn net.Conn) {

	count := 1
	defer fmt.Println("CLosed Connection")
	defer conn.Close()

	fmt.Println("Accepted connection")

	ticker := time.NewTicker(2*time.Second)

	input := bufio.NewScanner(conn)
	select {
	case <- ticker.C:
		fmt.Println("TIMEOUT")
	default:
		fmt.Println("DEFAULT")
	}

	for input.Scan() {
		fmt.Println("TICK")
		switch input.Text() {
		case "info":
			fmt.Printf("INFO %d",count)
		default:
			count++
			go func() {
				defer func (){
					count--
				}()
				echo(conn, input.Text(), 1*time.Second)
			}()

		}
	}
}

func main() {
	listener, err := net.Listen("tcp", ":9090")
	if err != nil {
		log.Fatalf("Error %v", err)
	}

	for {
		conn, err := listener.Accept()
		if err != nil {
			log.Fatalf("Error in Accept %s", err)
		}
		go handleConn(conn)
	}
}