package crypto

import (
	"crypto/x509"

	"gopkg.in/square/go-jose.v2"
)

// GetPubJWK returns JWK for given keys
func GetPubJWK(algo, keyID string, publicKey interface{}) (string, error) {
	jwk := &jose.JSONWebKeySet{
		Keys: []jose.JSONWebKey{
			{
				Algorithm:                   algo,
				Key:                         publicKey,
				Use:                         "sig",
				KeyID:                       keyID,
				Certificates:                []*x509.Certificate{},
				CertificateThumbprintSHA1:   []uint8{},
				CertificateThumbprintSHA256: []uint8{},
			},
		},
	}
	jwkPublicKey, err := jwk.Keys[0].MarshalJSON()
	if err != nil {
		return "", err
	}
	return string(jwkPublicKey), nil
}