package gateway

import (
	"io"
	"net"
)

type Listener struct {
	addr net.Addr
	ch   chan net.Conn
}

func (l *Listener) Receive(conn net.Conn) {
	select {
	case l.ch <- conn:
	default:
	}
}

func (l *Listener) Accept() (net.Conn, error) {
	select {
	case c, ok := <-l.ch:
		if ok {
			return c, nil
		} else {
			return nil, io.ErrClosedPipe
		}
	}
}

func (l *Listener) Close() error {
	close(l.ch)
	return nil
}

func (l *Listener) Addr() net.Addr {
	return l.addr
}

func NewListener(addr net.Addr) *Listener {
	l := &Listener{
		addr: addr,
		ch:   make(chan net.Conn, 2),
	}
	return l
}