package main

import (
	"fmt"
	_ "github.com/go-sql-driver/mysql"
	"math/rand"
	"net"
	"time"
)

// isPrivate checks if the IP address falls within private IP ranges
func isPrivate(ip [4]byte) bool {
	switch {
	case ip[0] == 10:
		return true
	case ip[0] == 172 && ip[1] >= 16 && ip[1] <= 31:
		return true
	case ip[0] == 192 && ip[1] == 168:
		return true
	default:
		return false
	}
}

var triedIPs []net.IP

// generateRandomPublicIP generates a random public IP address
func generateRandomPublicIP() net.IP {
	rand.NewSource(time.Now().UnixNano())
	var ipTemp [4]byte
	var ip net.IP
	for {
		ipTemp[0] = byte(rand.Intn(255)) + 1
		ipTemp[1] = byte(rand.Intn(256))
		ipTemp[2] = byte(rand.Intn(256))
		ipTemp[3] = byte(rand.Intn(256))

		ip = net.IPv4(ipTemp[0], ipTemp[1], ipTemp[2], ipTemp[3])

		// Ensure the generated IP is not in a private range
		if !ip.IsPrivate() && !ip.IsLoopback() { // Exclude 0.x.x.x and 127.x.x.x (loopback)
			dupe := false
			for _, ipTried := range triedIPs {
				if ipTried.Equal(ip) {
					dupe = true
				}
			}
			if !dupe {
				break
			}
		}
	}
	return ip
}

func doIPScan() {
	randomIP := generateRandomPublicIP()
	_, err := PingIP(randomIP, 25565, "")
	if err != nil {
		fmt.Println(err)
	}
}

func main() {
	for i := 0; i < 100000000; i++ {
		go doIPScan()
		time.Sleep(time.Duration(rand.Intn(10)) * time.Millisecond)
	}
}