package tcp

import (
	"context"
	"log"
	"mpbl3p/proxy"
	"net"
)

func NewListener(ctx context.Context, p *proxy.Proxy, local string, v func() proxy.MacVerifier, g func() proxy.MacGenerator) error {
	laddr, err := net.ResolveTCPAddr("tcp", local)
	if err != nil {
		return err
	}

	listener, err := net.ListenTCP("tcp", laddr)
	if err != nil {
		return err
	}

	go func() {
		for {
			conn, err := listener.AcceptTCP()
			if err != nil {
				panic(err)
			}

			if err := conn.SetWriteBuffer(0); err != nil {
				panic(err)
			}

			f := NewFlowConn(conn)

			log.Printf("received new tcp connection: %v\n", f)

			p.AddConsumer(ctx, &f, g())
			p.AddProducer(ctx, &f, v())
		}
	}()

	return nil
}