package auth

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

var (
	ErrEmptyPassword     = Error{"password is empty"}
	ErrPasswordIncorrect = Error{"password is incorrect"}
)

type Error struct {
	Err string
}

func (e Error) Error() string {
	return e.Err
}

func HashPassword(password string) (string, error) {
	if password == "" {
		return "", ErrEmptyPassword
	}
	bytes, err := bcrypt.GenerateFromPassword([]byte(password), 14)
	return string(bytes), err
}

func CheckPasswordHash(password, hash string) error {
	err := bcrypt.CompareHashAndPassword([]byte(hash), []byte(password))
	if err != nil {
		return ErrPasswordIncorrect
	}

	return nil
}