package nnet

import (
	"git.noahlan.cn/noahlan/nnet/conn"
	"git.noahlan.cn/noahlan/ntool/nlog"
	"github.com/goburrow/serial"
	"sync"
)

// ListenSerial 监听串口消息
func (ngin *Engine) ListenSerial(conf serial.Config) error {
	err := ngin.setup()
	if err != nil {
		nlog.Errorf("%s failed to setup server, err:%v", ngin.LogPrefix(), err)
		return err
	}

	port, err := serial.Open(&conf)
	if err != nil {
		nlog.Errorf("%s failed to open %s, err:%v", ngin.LogPrefix(), conf.Address, err)
		return err
	}

	nlog.Infof("%s now open %s at rate:%d ...", ngin.LogPrefix(), conf.Address, conf.BaudRate)
	defer func() {
		_ = port.Close()
		ngin.Stop()
	}()

	var wg sync.WaitGroup
	wg.Add(1)

	ngin.handle(conn.NewSerialConn(port, &conf))

	go func() {
		for {
			select {
			case <-ngin.dieChan:
				wg.Done()
			default:
			}
		}
	}()

	wg.Wait()

	return nil
}