package hash

import (
	"context"
	"crypto/sha256"
	"encoding/hex"
	"errors"

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

var (
	ErrHash = errors.New("wrong hash value")
)

func Hash(ctx context.Context, payload string) (string, error) {
	bytes, err := bcrypt.GenerateFromPassword([]byte(payload), bcrypt.DefaultCost)
	if err != nil {
		return "", ErrHash
	}
	return string(bytes), nil
}

func CompareHash(ctx context.Context, hash string, payload string) bool {
	err := bcrypt.CompareHashAndPassword([]byte(hash), []byte(payload))
	return err == nil
}

func SHA256(ctx context.Context, payload string) string {
	hash := sha256.Sum256([]byte(payload))
	return hex.EncodeToString(hash[:])
}