frostfs-sdk-java/models/src/main/java/info/frostfs/sdk/mappers/SignatureMapper.java

package info.frostfs.sdk.mappers;

import com.google.protobuf.ByteString;
import frostfs.refs.Types;
import info.frostfs.sdk.dto.Signature;

import static java.util.Objects.isNull;

public class SignatureMapper {
    private static final String ERROR_UNKNOWN_VALUE_TEMPLATE = "Unknown SignatureScheme. Value: %s.";

    private SignatureMapper() {
    }

    public static Types.Signature toGrpcMessage(Signature signature) {
        if (isNull(signature)) {
            return null;
        }

        var scheme = Types.SignatureScheme.forNumber(signature.getScheme().value);
        if (isNull(scheme)) {
            throw new IllegalArgumentException(
                    String.format(ERROR_UNKNOWN_VALUE_TEMPLATE, signature.getScheme().name())
            );
        }

        return Types.Signature.newBuilder()
                .setKey(ByteString.copyFrom(signature.getKey()))
                .setSign(ByteString.copyFrom(signature.getSign()))
                .setScheme(scheme)
                .build();
    }
}