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/*
 * Copyright (c) 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.match;

import static org.opendaylight.yangtools.yang.common.netty.ByteBufUtils.readUint32;

import io.netty.buffer.ByteBuf;
import org.opendaylight.openflowjava.protocol.api.keys.MatchEntryDeserializerKey;
import org.opendaylight.openflowjava.protocol.api.keys.MatchEntrySerializerKey;
import org.opendaylight.openflowjava.protocol.api.util.EncodeConstants;
import org.opendaylight.openflowjava.protocol.api.util.OxmMatchConstants;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev150225.MatchField;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev150225.Nxm1Class;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev150225.OxmClassBase;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev150225.match.entries.grouping.MatchEntry;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowjava.nx.match.rev140421.NxmNxTunIpv4Src;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowjava.nx.match.rev140421.ofj.aug.nx.match.TunIpv4SrcCaseValue;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowjava.nx.match.rev140421.ofj.aug.nx.match.TunIpv4SrcCaseValueBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowjava.nx.match.rev140421.ofj.nxm.nx.match.tun.ipv4.src.grouping.TunIpv4SrcValuesBuilder;

public class TunIpv4SrcCodec extends AbstractMatchCodec {

    private static final int VALUE_LENGTH = 4;
    private static final int NXM_FIELD_CODE = 31;
    public static final MatchEntrySerializerKey SERIALIZER_KEY =
            new MatchEntrySerializerKey<>(EncodeConstants.OF_VERSION_1_3, Nxm1Class.VALUE, NxmNxTunIpv4Src.VALUE);
    public static final MatchEntryDeserializerKey DESERIALIZER_KEY = new MatchEntryDeserializerKey(
            EncodeConstants.OF_VERSION_1_3, OxmMatchConstants.NXM_1_CLASS, NXM_FIELD_CODE);

    @Override
    public void serialize(final MatchEntry input, final ByteBuf outBuffer) {
        serializeHeader(input, outBuffer);
        TunIpv4SrcCaseValue caseValue = (TunIpv4SrcCaseValue) input.getMatchEntryValue();
        outBuffer.writeInt(caseValue.getTunIpv4SrcValues().getValue().intValue());
    }

    @Override
    public MatchEntry deserialize(final ByteBuf message) {
        return deserializeHeaderToBuilder(message)
                .setMatchEntryValue(new TunIpv4SrcCaseValueBuilder()
                    .setTunIpv4SrcValues(new TunIpv4SrcValuesBuilder().setValue(readUint32(message)).build())
                    .build())
                .build();
    }

    @Override
    public int getNxmFieldCode() {
        return NXM_FIELD_CODE;
    }

    @Override
    public int getOxmClassCode() {
        return OxmMatchConstants.NXM_1_CLASS;
    }

    @Override
    public int getValueLength() {
        return VALUE_LENGTH;
    }

    @Override
    public MatchField getNxmField() {
        return NxmNxTunIpv4Src.VALUE;
    }

    @Override
    public OxmClassBase getOxmClass() {
        return Nxm1Class.VALUE;
    }
}