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/*
 * Copyright (c) 2018 SUSE LINUX GmbH.  All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
 * and is available at http://www.eclipse.org/legal/epl-v10.html
 */
package org.opendaylight.openflowjava.nx.codec.action;

import static org.opendaylight.yangtools.yang.common.netty.ByteBufUtils.readUint16;

import io.netty.buffer.ByteBuf;
import org.opendaylight.openflowjava.nx.api.NiciraActionDeserializerKey;
import org.opendaylight.openflowjava.nx.api.NiciraActionSerializerKey;
import org.opendaylight.openflowjava.protocol.api.util.EncodeConstants;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.action.rev150203.actions.grouping.Action;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowjava.nx.action.rev140421.ofj.aug.nx.action.ActionOutputReg2;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowjava.nx.action.rev140421.ofj.aug.nx.action.ActionOutputReg2Builder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowjava.nx.action.rev140421.ofj.nx.action.output.reg2.grouping.NxActionOutputReg2Builder;

public class OutputReg2Codec extends AbstractActionCodec {

    public static final byte SUBTYPE = 32; // NXAST_OUTPUT_REG2
    public static final NiciraActionSerializerKey SERIALIZER_KEY =
            new NiciraActionSerializerKey(EncodeConstants.OF_VERSION_1_3, ActionOutputReg2.class);
    public static final NiciraActionDeserializerKey DESERIALIZER_KEY =
            new NiciraActionDeserializerKey(EncodeConstants.OF_VERSION_1_3, SUBTYPE);

    @Override
    public Action deserialize(final ByteBuf message) {
        final int startIndex = message.readerIndex();
        final var actionBuilder = deserializeHeader(message)
            .setActionChoice(new ActionOutputReg2Builder()
                .setNxActionOutputReg2(new NxActionOutputReg2Builder()
                    .setNBits(readUint16(message))
                    .setMaxLen(readUint16(message))
                    .setSrc(readNxmHeader(message))
                    .build())
                .build());
        skipPadding(message, startIndex);

        return actionBuilder.build();
    }

    @Override
    public void serialize(final Action input, final ByteBuf outBuffer) {
        ActionOutputReg2 action = (ActionOutputReg2) input.getActionChoice();
        final int startIndex = outBuffer.writerIndex();
        serializeHeader(EncodeConstants.EMPTY_LENGTH, SUBTYPE, outBuffer);
        outBuffer.writeShort(action.getNxActionOutputReg2().getNBits().shortValue());
        outBuffer.writeShort(action.getNxActionOutputReg2().getMaxLen().shortValue());
        writeNxmHeader(action.getNxActionOutputReg2().getSrc(), outBuffer);
        writePaddingAndSetLength(outBuffer, startIndex);
    }
}