package myth

import (
	"crypto/hmac"
	"crypto/md5"
	"crypto/sha1"
	"crypto/sha256"
	"crypto/sha512"
	"encoding/hex"
)

// SHA512 hash
func SHA512(data []byte) ([]byte, error) {
	hash := sha512.New()
	_, err := hash.Write(data)
	if err != nil {
		return nil, err
	}

	return hash.Sum(nil), nil
}

// HmacSHA256 hmac with sha256
func HmacSHA256(k, s []byte) ([]byte, error) {
	hash := hmac.New(sha256.New, k)
	_, err := hash.Write(s)
	if err != nil {
		return nil, err
	}
	return hash.Sum(nil), nil
}

// SHA256 hash string
func SHA256(data string) string {
	hash := sha256.New()
	hash.Write([]byte(data))
	return hex.EncodeToString(hash.Sum(nil))
}

// MD5 hash string
func MD5(data string) string {
	hash := md5.New()
	hash.Write([]byte(data))
	return hex.EncodeToString(hash.Sum(nil))
}

// SHA1 hash string
func SHA1(data string) string {
	hash := sha1.New()
	hash.Write([]byte(data))
	return hex.EncodeToString(hash.Sum(nil))
}

// HmacSHA1 hmac with sha1
func HmacSHA1(k, s []byte) ([]byte, error) {
	hash := hmac.New(sha1.New, k)
	_, err := hash.Write(s)
	if err != nil {
		return nil, err
	}
	return hash.Sum(nil), nil
}