package utils

import (
	"crypto/md5"
	"fmt"

	"golang.org/x/crypto/bcrypt"
)

func GeneSalt() string {
	return RandomString(8)
}

//GenePwdHash 给密码就行加密操作
func GenPwdHash(userPassword string) (string, error) {
	hash, err := bcrypt.GenerateFromPassword([]byte(userPassword), bcrypt.DefaultCost)
	if err != nil {
		return "", err
	}
	return string(hash), nil
}

//ValidatePwd 密码比对
func ValidatePwd(userPassword string, hashed string) bool {
	if err := bcrypt.CompareHashAndPassword([]byte(hashed), []byte(userPassword)); err != nil {
		return false
	}
	return true
}

func Hash(s string) string {
	md5Inst := md5.New()
	md5Inst.Write([]byte(s))
	res := md5Inst.Sum(nil)
	// return string(res)
	return fmt.Sprintf("%x", res)
}