/*
 * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
 * or more contributor license agreements. Licensed under the "Elastic License
 * 2.0", the "GNU Affero General Public License v3.0 only", and the "Server Side
 * Public License v 1"; you may not use this file except in compliance with, at
 * your election, the "Elastic License 2.0", the "GNU Affero General Public
 * License v3.0 only", or the "Server Side Public License, v 1".
 */

package org.elasticsearch.common.io.stream;

import org.elasticsearch.TransportVersion;
import org.elasticsearch.core.Nullable;

import java.io.IOException;

/**
 * This {@link StreamOutput} writes nowhere. It can be used to check if serialization would
 * be successful writing to a specific version.
 */
public final class VersionCheckingStreamOutput extends StreamOutput {

    public VersionCheckingStreamOutput(TransportVersion version) {
        setTransportVersion(version);
    }

    @Override
    public void writeByte(byte b) throws IOException {
        // no-op
    }

    @Override
    public void writeBytes(byte[] b, int offset, int length) throws IOException {
        // no-op
    }

    @Override
    public void flush() throws IOException {
        // no-op

    }

    @Override
    public void close() throws IOException {
        // no-op

    }

    @Override
    public void writeNamedWriteable(NamedWriteable namedWriteable) throws IOException {
        if (namedWriteable instanceof VersionedNamedWriteable vnw) {
            checkVersionCompatibility(vnw);
        }
        super.writeNamedWriteable(namedWriteable);
    }

    @Override
    public void writeOptionalNamedWriteable(@Nullable NamedWriteable namedWriteable) throws IOException {
        if (namedWriteable != null && namedWriteable instanceof VersionedNamedWriteable vnw) {
            checkVersionCompatibility(vnw);
        }
        super.writeOptionalNamedWriteable(namedWriteable);
    }

    private void checkVersionCompatibility(VersionedNamedWriteable namedWriteable) {
        if (namedWriteable.getMinimalSupportedVersion().after(getTransportVersion())) {
            throw new IllegalArgumentException(
                "["
                    + namedWriteable.getWriteableName()
                    + "] was released first in version "
                    + namedWriteable.getMinimalSupportedVersion().toReleaseVersion()
                    + ", failed compatibility check trying to send it to node with version "
                    + getTransportVersion().toReleaseVersion()
            );
        }
    }
}