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/*
 * Copyright (c) 2014, 2015 Cisco Systems, Inc. and others.  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.ActionRegMove;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowjava.nx.action.rev140421.ofj.aug.nx.action.ActionRegMoveBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowjava.nx.action.rev140421.ofj.nx.action.reg.move.grouping.NxActionRegMoveBuilder;

public class RegMoveCodec extends AbstractActionCodec {

    public static final byte SUBTYPE = 6; // NXAST_REG_MOVE
    public static final NiciraActionSerializerKey SERIALIZER_KEY = new NiciraActionSerializerKey(
            EncodeConstants.OF_VERSION_1_3, ActionRegMove.class);
    public static final NiciraActionDeserializerKey DESERIALIZER_KEY = new NiciraActionDeserializerKey(
            EncodeConstants.OF_VERSION_1_3, SUBTYPE);

    @Override
    public void serialize(final Action input, final ByteBuf outBuffer) {
        ActionRegMove actionRegMove = (ActionRegMove) input.getActionChoice();
        final int startIndex = outBuffer.writerIndex();
        serializeHeader(EncodeConstants.EMPTY_LENGTH, SUBTYPE, outBuffer);
        outBuffer.writeShort(actionRegMove.getNxActionRegMove().getNBits().toJava());
        outBuffer.writeShort(actionRegMove.getNxActionRegMove().getSrcOfs().toJava());
        outBuffer.writeShort(actionRegMove.getNxActionRegMove().getDstOfs().toJava());
        writeNxmHeader(actionRegMove.getNxActionRegMove().getSrc(), outBuffer);
        writeNxmHeader(actionRegMove.getNxActionRegMove().getDst(), outBuffer);
        writePaddingAndSetLength(outBuffer, startIndex);
    }

    @Override
    public Action deserialize(final ByteBuf message) {
        final int startIndex = message.readerIndex();
        final var actionBuilder = deserializeHeader(message)
            .setActionChoice(new ActionRegMoveBuilder()
                .setNxActionRegMove(new NxActionRegMoveBuilder()
                    .setNBits(readUint16(message))
                    .setSrcOfs(readUint16(message))
                    .setDstOfs(readUint16(message))
                    .setSrc(readNxmHeader(message))
                    .setDst(readNxmHeader(message))
                    .build())
                .build());
        skipPadding(message, startIndex);

        return actionBuilder.build();
    }
}