package main

import (
	//"github.com/joaojeronimo/go-crc16"
	"bytes"
	"encoding/binary"
	"encoding/hex"
	"fmt"
	"net"
	"strconv"
	"time"

	"git.wecise.com/wecise/gosnmp"
	"git.wecise.com/wecise/odbserver/lib/wgwaiter"
	"gitee.com/wecisecode/util/logger"
	//"git.wecise.com/wecise/util/cast"
	//"strconv"
)

func IntToBytes(data int64) []byte {
	bytebuf := bytes.NewBuffer([]byte{})
	binary.Write(bytebuf, binary.BigEndian, data)
	return bytebuf.Bytes()
}

func ipToHexString(ip string) string {
	ipa := net.ParseIP(ip)
	p1 := fmt.Sprintf("%X", ipa[12])
	if len(p1) == 1 {
		p1 = "0" + p1
	}
	p2 := fmt.Sprintf("%X", ipa[13])
	if len(p2) == 1 {
		p2 = "0" + p2
	}
	p3 := fmt.Sprintf("%X", ipa[14])
	if len(p3) == 1 {
		p3 = "0" + p3
	}
	p4 := fmt.Sprintf("%X", ipa[15])
	if len(p4) == 1 {
		p4 = "0" + p4
	}
	s := fmt.Sprintf("%s%s%s%s", p1, p2, p3, p4)
	return s
}

func HexStringToBytes(s string) []byte {
	b, _ := hex.DecodeString(s)
	return b
}

func main() {

	n := 100
	snmp := &gosnmp.GoSNMP{
		Port:               uint16(161),
		Transport:          "udp",
		Community:          "2811",
		Timeout:            time.Duration(2) * time.Second,
		Retries:            3,
		ExponentialTimeout: false,
		MaxOids:            gosnmp.MaxOids,
	}

	snmp.Version = gosnmp.Version2c

	lg := logger.New()
	lg.SetConsole(true)
	//params.Logger = lg
	snmp.Logger = gosnmp.NewLogger(lg)
	snmp.Target = "192.168.169.26"
	snmp.Retries = 3

	snmp.OnRetry = func(gs *gosnmp.GoSNMP) {
		logger.Warn("Found that SNMP has a retry action.")
	}

	if err := snmp.Connect(); err != nil {
		return
	}

	defer func() {
		if snmp.Conn != nil {
			if err := snmp.Conn.Close(); err != nil {
				logger.Warnf("Close rping conn error: %v", err)
			}
		}
	}()

	wg := wgwaiter.NewWaiter()

	for i := 0; i < n; i++ {
		wg.AddOne()
		go run(snmp, i, wg)
		if err := wg.Wait(50 * time.Second); err != nil {
			fmt.Printf("####err ==>%v\n", err)
		}
	}

	/*if err := wg.Wait(50 * time.Second); err != nil {
		fmt.Printf("####err ==>%v\n",err)
	}*/

	//time.Sleep(time.Second)

	print("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n")
	for i := 0; i < n; i++ {
		id := fmt.Sprintf("123456%d", i)
		if m, err := get(snmp, id); err != nil {
			fmt.Printf("####err ==>%v\n", err)
		} else {
			fmt.Printf("######## %i===> %v\n", i, m)
		}
	}

	print("bbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n")
	/*for i:=0 ; i<n ; i++ {

		id	   := fmt.Sprintf("123456%d", i)


		res, err := snmp.Set([]gosnmp.SnmpPDU{
			{
				Name:  ".1.3.6.1.4.1.9.9.16.1.1.1.16." + id,
				Type:  gosnmp.Integer,
				Value: 6,
			},
		})

		if err != nil {
			fmt.Printf("%v",err)
		}
		if res == nil {
			fmt.Printf("nulllllll")
		}else if res.Error != gosnmp.NoError {
			fmt.Printf("%v", res.Error)
		}
	}*/

}

func run(snmp *gosnmp.GoSNMP, i int, wg *wgwaiter.WgWaiter) {
	defer wg.Done()

	ip := "192.168.174.91"

	setstr := "matrix"
	id := fmt.Sprintf("123456%d", i)

	//if i%10 == 1 {
	//logger.Errorf("--------------")
	//ip = "192.168.0.1"
	//}

	pdus := []gosnmp.SnmpPDU{
		//{
		//	Name: ".1.3.6.1.4.1.9.9.16.1.1.1.16." + id,
		//	Type: gosnmp.Integer,
		//	Value: 4,
		//},
		{
			Name:  ".1.3.6.1.4.1.9.9.16.1.1.1.16." + id,
			Type:  gosnmp.Integer,
			Value: 6,
		},
		{
			Name:  ".1.3.6.1.4.1.9.9.16.1.1.1.16." + id,
			Type:  gosnmp.Integer,
			Value: 5,
		},
		{
			Name:  ".1.3.6.1.4.1.9.9.16.1.1.1.15." + id,
			Type:  gosnmp.OctetString,
			Value: setstr,
		},
		{
			Name:  ".1.3.6.1.4.1.9.9.16.1.1.1.2." + id,
			Type:  gosnmp.Integer,
			Value: 1,
		},
		{
			Name:  ".1.3.6.1.4.1.9.9.16.1.1.1.3." + id,
			Type:  gosnmp.HexString,
			Value: HexStringToBytes(ipToHexString(ip)),
			//Value: HexStringToBytes(ipToHexString(t.Host)),
		},
		{
			Name:  ".1.3.6.1.4.1.9.9.16.1.1.1.4." + id,
			Type:  gosnmp.Integer,
			Value: 5,
		},
		{
			Name:  ".1.3.6.1.4.1.9.9.16.1.1.1.5." + id,
			Type:  gosnmp.Integer,
			Value: 64,
		},
		{
			Name:  ".1.3.6.1.4.1.9.9.16.1.1.1.6." + id,
			Type:  gosnmp.Integer,
			Value: 500,
		},
		//{
		//	Name: ".1.3.6.1.4.1.9.9.16.1.1.1.3." + id,
		//	Type: gosnmp.IPAddress,
		//	Value: t.Server,
		//},
		{
			Name:  ".1.3.6.1.4.1.9.9.16.1.1.1.17." + id,
			Type:  gosnmp.OctetString,
			Value: "",
		},
	}

	for k := range pdus {
		res, err := snmp.Set([]gosnmp.SnmpPDU{pdus[k]})
		if err != nil {
			logger.Errorf("set %s error: %v", pdus[k].Name, err)
		}

		if res == nil {
			logger.Errorf("set %s result error: %v", pdus[k].Name, res)
		} else if res.Error != gosnmp.NoError {
			logger.Errorf("set %s result error: %v", pdus[k].Name, res.Error)
		}
	}

	name := ".1.3.6.1.4.1.9.9.16.1.1.1.16." + id
	res, err := snmp.Set([]gosnmp.SnmpPDU{
		{
			Name:  name,
			Type:  gosnmp.Integer,
			Value: 1,
		},
	})
	if err != nil {
		logger.Errorf("set %s error: %v", name, err)
	}

	if res == nil {
		logger.Errorf("set %s result error: %v", name, res)
	} else if res.Error != gosnmp.NoError {
		logger.Errorf("set %s result error: %v", name, res.Error)
	}

}

func get(snmp *gosnmp.GoSNMP, id string) (map[string]interface{}, error) {
	time.Sleep(50 * time.Millisecond)
	m := make(map[string]interface{})

	res, err := snmp.Get([]string{
		".1.3.6.1.4.1.9.9.16.1.1.1.10." + id,
	})
	if err != nil {
		return nil, err
	}
	var numberPackets int64
	for _, pdu := range res.Variables {
		logger.Debugf("rping cisco get: name=%s type=%s value=%v", pdu.Name, pdu.Type.String(), pdu.Value)
		switch pdu.Name {
		case ".1.3.6.1.4.1.9.9.16.1.1.1.10." + id:
			switch pdu.Type {
			case gosnmp.Integer, gosnmp.Gauge32, gosnmp.Counter32, gosnmp.TimeTicks, gosnmp.Counter64:
				numberPackets = gosnmp.ToBigInt(pdu.Value).Int64()
				m["numberPackets"] = numberPackets
			}
		}
	}
	//if numberPackets == 0 {
	//	return nil, fmt.Errorf("no responses received")
	//}

	res, err = snmp.Get([]string{
		".1.3.6.1.4.1.9.9.16.1.1.1.13." + id,
		".1.3.6.1.4.1.9.9.16.1.1.1.11." + id,
		".1.3.6.1.4.1.9.9.16.1.1.1.12." + id,
	})
	if err != nil {
		return nil, err
	}

	for _, pdu := range res.Variables {
		logger.Debugf("rping cisco get: name=%s type=%s value=%v", pdu.Name, pdu.Type.String(), pdu.Value)
		switch pdu.Name {
		case ".1.3.6.1.4.1.9.9.16.1.1.1.13." + id:
			switch pdu.Type {
			case gosnmp.Integer, gosnmp.Gauge32, gosnmp.Counter32, gosnmp.TimeTicks, gosnmp.Counter64:
				m["maxRTT"] = gosnmp.ToBigInt(pdu.Value).Int64()
			}
		case ".1.3.6.1.4.1.9.9.16.1.1.1.11." + id:
			switch pdu.Type {
			case gosnmp.Integer, gosnmp.Gauge32, gosnmp.Counter32, gosnmp.TimeTicks, gosnmp.Counter64:
				m["minRTT"] = gosnmp.ToBigInt(pdu.Value).Int64()
			}
		case ".1.3.6.1.4.1.9.9.16.1.1.1.12." + id:
			switch pdu.Type {
			case gosnmp.Integer, gosnmp.Gauge32, gosnmp.Counter32, gosnmp.TimeTicks, gosnmp.Counter64:
				m["averageRTT"] = gosnmp.ToBigInt(pdu.Value).Int64()
			}
		}
	}

	respondPercent, _ := strconv.ParseFloat(fmt.Sprintf("%.0f", float64(numberPackets)/float64(3)*100), 10)
	m["respondPercent"] = respondPercent

	return m, nil
}

/*
func wait(snmp *gosnmp.GoSNMP, id string) int {
	oid := ".1.3.6.1.4.1.9.9.16.1.1.1.14." + id
	var count int
	for count < t.Timeout {
		res, err := snmp.Get([]string{oid})
		if err == nil && res.Variables != nil {
			for _, pdu := range res.Variables {
				logger.Debugf("rping cisco wait: name=%s type=%s value=%v", pdu.Name, pdu.Type.String(), pdu.Value)
				var s string
				switch pdu.Type {
				case gosnmp.OctetString:
					s = string(pdu.Value.([]byte))
				case gosnmp.Integer:
					s = cast.ToString(gosnmp.ToBigInt(pdu.Value).Int64())
				}
				if s == "1" {
					return 0
				} else if s == "true" {
					return 1
				}
				break
			}
		}
		time.Sleep(time.Second)
		count++
	}
	return 2
}*/