package utils

import (
	"fmt"
	"github.com/google/uuid"
	"net"
	"strings"
	"sync"
	"time"
)

type UuidUtil struct {
	lock    sync.Mutex
	uuidint int
}

var Uuid = &UuidUtil{}

func (u *UuidUtil) CreateUUID() string {
	u.lock.Lock()
	defer u.lock.Unlock()
	// 生成基于字符串的 UUID
	key := fmt.Sprintln(IP.Get192Ip(), time.Now().Format("2006-01-02_15-04-05"), u.uuidint)
	u.uuidint++
	u1 := uuid.NewSHA1(uuid.Nil, []byte(key))
	return u1.String()
}

type IpUtil struct {
	Ip string
}

var IP = &IpUtil{}

func (i *IpUtil) Get192Ip() string {
	if i.Ip == "" {
		i.Ip = Get192Ip()
		return i.Ip
	}
	return i.Ip
}

func Get192Ip() string {
	interfaces, err := net.Interfaces()
	if err != nil {
		return ""
	}
	for _, iface := range interfaces {
		addrs, err := iface.Addrs()
		if err != nil {
			continue
		}
		for _, addr := range addrs {
			ip, _, _ := net.ParseCIDR(addr.String())
			if ip != nil {
				ipStr := ip.String()
				if strings.HasPrefix(ipStr, "192") {
					return ipStr
				}
			}
		}
	}
	return ""
}