package event

import (
	"encoding/json"
	"fmt"
	"git.rosy.net.cn/jx-callback/globals"
	"io"
	"net"
	"strconv"
	"sync"
)

var (
	//广播频道(通道)
	msgChan   = make(chan string)
	tcpClient = &TcpClient{}
)

type PrintMsg struct {
	PrintNo string `json:"print_no"`
	Data    string `json:"data"`
}

//连接的客户端,吧每个客户端都放进来
type TcpClient struct {
	Clients map[string][]interface{}
	s       *sync.RWMutex
}

func Init() {
	listenTcp()
	go handleTcpMessages()
}

func listenTcp() {
	tcpClient.Clients = make(map[string][]interface{})
	l, err := net.Listen("tcp", ":8000")
	if err != nil {
		fmt.Println("listen error:", err)
		return
	}
	for {
		c, err := l.Accept()
		if err != nil {
			fmt.Println("accept error:", err)
			break
		}
		go handleConn(c)
	}
}

func handleConn(c net.Conn) {
	var (
		printMsg = &PrintMsg{}
	)
	if c == nil {
		globals.SugarLogger.Debugf("conn is nil")
		return
	}
	defer c.Close()
	buffer := make([]byte, 1024)
	for {
		n, err := c.Read(buffer)
		if err != nil {
			if err == io.EOF {
				fmt.Println("connection close")
			} else {
				fmt.Println("ReadString err", err)
			}
			return
		}
		//能转说明是打印信息，不能转说明是打印机的心跳或者连接
		if err = json.Unmarshal(buffer[:n], &printMsg); err == nil {
			//是打印信息就把信息放进chan里，后续根据信息里的printno寻找客户端连接并打印
			msgChan <- string(buffer[:n])
		} else {
			//如果是打印机的心跳或者打印信息返回
			//tcpClient.Clients[]
		}
	}
}

func handleTcpMessages() {
	for {
		//读取通道中的消息
		//msg := <-msgChan
	}
}

func Hextob(str string) []byte {
	slen := len(str)
	bHex := make([]byte, len(str)/2)
	ii := 0
	for i := 0; i < len(str); i = i + 2 {
		if slen != 1 {
			ss := string(str[i]) + string(str[i+1])
			bt, _ := strconv.ParseInt(ss, 16, 32)
			bHex[ii] = byte(bt)
			ii = ii + 1
			slen = slen - 2
		}
	}
	return bHex
}

func int2h8l8(i int64) (h, l string) {
	origin2 := fmt.Sprintf("%b", i)
	flag := 16 - len(origin2)
	for i := 0; i < flag; i++ {
		origin2 = "0" + origin2
	}
	begin8 := origin2[:8]
	end8 := origin2[8:]
	r1, _ := strconv.ParseInt(begin8, 2, 32)
	r2, _ := strconv.ParseInt(end8, 2, 32)
	h = fmt.Sprintf("%x", r1)
	l = fmt.Sprintf("%x", r2)
	if len(h) < 2 {
		h = "0" + h
	}
	if len(l) < 2 {
		l = "0" + l
	}
	return h, l
}