package can_btm

import (
	"fmt"
	"joylink.club/bj-rtsts-server/third_party/message"
	"joylink.club/bj-rtsts-server/third_party/udp"
	"log/slog"
)

// btm与canet(网口-CAN口转换器)
type btmCanetClient struct {
	//udp
	udpServer udp.UdpServer
	//udp
	udpClient     udp.UdpClient
	localUdpPort  int
	remoteUdpPort int
	remoteIp      string
}

func (s *btmCanetClient) Start() {
	//
	s.udpServer = udp.NewServer(fmt.Sprintf(":%d", s.localUdpPort), s.handleCannetFrames)
	s.udpServer.Listen()
	//
	s.udpClient = udp.NewClient(fmt.Sprintf("%s:%d", s.remoteIp, s.remoteUdpPort))
}

func (s *btmCanetClient) Stop() {
	if s.udpServer != nil {
		s.udpServer.Close()
	}
	if s.udpClient != nil {
		s.udpClient.Close()
	}
}
func (s *btmCanetClient) handleCannetFrames(cfs []byte) {
	//一个cannet 帧 13字节
	if len(cfs) > 0 && len(cfs)%13 == 0 {
		cfSum := len(cfs) / 13
		for cfi := 0; cfi < cfSum; cfi++ {
			cfStart := cfi * 13
			cf := message.NewCanetFrame(cfs[cfStart : cfStart+13])
			fmt.Println(cf.String())
		}
	} else {
		slog.Warn("从cannet接收数据，未满足条件‘len(cfs) > 0 && len(cfs)%13 == 0‘", "len(cfs)", len(cfs))
	}
}