package nnet

import (
	"errors"
	"git.noahlan.cn/noahlan/nnet/config"
	"git.noahlan.cn/noahlan/ntool/nlog"
	"net"
)

func (ngin *Engine) ListenTCP(conf config.TCPServerConf) error {
	err := ngin.setup()
	if err != nil {
		nlog.Errorf("%s failed to setup server, err:%v", ngin.LogPrefix(), err)
		return err
	}

	listener, err := net.Listen(conf.Protocol, conf.Addr)
	if err != nil {
		nlog.Errorf("%s failed to listening at [%s %s] %v", ngin.LogPrefix(), conf.Protocol, conf.Addr, err)
		return err
	}
	nlog.Infof("%s now listening %s at %s...", ngin.LogPrefix(), conf.Protocol, conf.Addr)
	defer func() {
		_ = listener.Close()
		ngin.Stop()
	}()
	for {
		rc, err := listener.Accept()
		if err != nil {
			if errors.Is(err, net.ErrClosed) {
				nlog.Errorf("%s connection closed, err:%v", ngin.LogPrefix(), err)
				return err
			}
			nlog.Errorf("%s accept connection failed, err:%v", ngin.LogPrefix(), err)
			continue
		}

		go ngin.handle(rc)
	}
}