package crypto

import (
	"crypto/sha1"
	"fmt"

	"github.com/Luzifer/go-openssl/v3"
	"golang.org/x/crypto/bcrypt"
)

// SHA1 回傳sha1加密
func SHA1(v string) string {
	h := sha1.New()
	h.Write([]byte(v))
	bs := h.Sum(nil)
	return fmt.Sprintf("%x", bs)
}

func EncryptPassword(pwd string) (string, error) {
	hash, err := bcrypt.GenerateFromPassword([]byte(pwd), bcrypt.DefaultCost)
	if err != nil {
		return "", err
	}

	return string(hash), nil
}

func CheckPassword(pwd, hash string) error {
	return bcrypt.CompareHashAndPassword([]byte(hash), []byte(pwd))
}

func DecryptAES(value, key string) ([]byte, error) {
	o := openssl.New()

	dec, err := o.DecryptBytes(key, []byte(value), openssl.DigestMD5Sum)
	if err != nil {
		return nil, err
	}

	return dec, nil
}

func EncryptAES(value, key string) ([]byte, error) {
	o := openssl.New()

	enc, err := o.EncryptBytes(key, []byte(value), openssl.DigestMD5Sum)
	if err != nil {
		return nil, err
	}

	return enc, nil
}