package crypto

import (
	"crypto/sha256"

	"git.mleku.dev/mleku/nostr/crypto/ec/schnorr"
	"git.mleku.dev/mleku/nostr/crypto/ec/secp256k1"
	"git.mleku.dev/mleku/nostr/encoders/bech32encoding"
)

func NsecToBytes(nsec string) ([]byte, error) {
	return bech32encoding.NsecToBytes(nsec)
}

func PubKeyFromPrivKey(privKeyBytes []byte) ([]byte, error) {
	sk := secp256k1.SecKeyFromBytes(privKeyBytes)
	pub := sk.PubKey()
	return schnorr.SerializePubKey(pub), nil
}

func SignSchnorr(privKeyBytes, message []byte) ([]byte, error) {
	sk := secp256k1.SecKeyFromBytes(privKeyBytes)
	sig, err := schnorr.Sign(sk, message)
	if err != nil {
		return nil, err
	}
	return sig.Serialize(), nil
}

func Sha256(data []byte) []byte {
	h := sha256.Sum256(data)
	return h[:]
}