package gatewayServer

import (
	"fmt"
	"io"
	"lc-fangdaosha/global"
	"log"
	"net"
	"sync/atomic"
)

var ipAddress = global.Config.Foreign.GatewayServer
var ConnMap = make(map[string]net.Conn, 50)
var openDebug bool = false

// GatewayServe 网关服务
func GatewayServe() {
	listen, err := net.Listen("tcp", ipAddress)
	if err != nil {
		log.Fatalln("服务启动失败 ", err)
	}
	for {
		accept, err := listen.Accept()
		if err != nil {
			log.Fatalln("获取连接失败 ", err)
		}
		go handleConn(accept)
	}
}

var n int32

// handleConn 处理连接
func handleConn(c net.Conn) {
	defer func() {
		atomic.AddInt32(&n, -1)
	}()
	atomic.AddInt32(&n, 1)
	fmt.Printf("连接数 %d\n", atomic.LoadInt32(&n))
	fmt.Printf("当前连接 %s\n", c.RemoteAddr())
	//var filterChan = make(chan []byte, 32)
	var dataChan = make(chan []byte, 32)
	readData := func() {
		for {
			var buf = make([]byte, 1024)
			n, err := c.Read(buf)
			if err != nil {
				if err == io.EOF {
					log.Println("已到达文件结束")
					break
				}
				log.Println("读数据失败", err)
				break
			}
			if n == 0 {
				log.Println("未读取到数据")
				break
			}
			dataChan <- buf[:n]
		}
	}
	handleData := func() {
		for {
			v, ok := <-dataChan
			if !ok {
				return
			}
			adu := UnPack(v)
			c.RemoteAddr()
			ParseAndResponse(adu, c)
		}
	}
	go readData()
	go handleData()
}