/*
 * Copyright (c) 2013 Pantheon Technologies s.r.o. 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.protocol.impl.deserialization.match;

import io.netty.buffer.ByteBuf;

import org.opendaylight.openflowjava.protocol.api.extensibility.OFDeserializer;
import org.opendaylight.openflowjava.protocol.impl.util.ByteBufUtils;
import org.opendaylight.openflowjava.protocol.api.util.EncodeConstants;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev100924.MacAddress;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.MacAddressMatchEntry;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.MacAddressMatchEntryBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.oxm.fields.grouping.MatchEntries;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.oxm.fields.grouping.MatchEntriesBuilder;

/**
 * @author michal.polkorab
 *
 */
public abstract class AbstractOxmMacAddressDeserializer extends AbstractOxmMatchEntryDeserializer
        implements OFDeserializer<MatchEntries> {

    @Override
    public MatchEntries deserialize(ByteBuf input) {
        MatchEntriesBuilder builder = processHeader(getOxmClass(), getOxmField(), input);
        addMacAddressAugmentation(builder, input);
        if (builder.isHasMask()) {
            OxmMaskDeserializer.addMaskAugmentation(builder, input, EncodeConstants.MAC_ADDRESS_LENGTH);
        }
        return builder.build();
    }

    private static void addMacAddressAugmentation(MatchEntriesBuilder builder, ByteBuf input) {
        MacAddressMatchEntryBuilder macAddress = new MacAddressMatchEntryBuilder();
        byte[] address = new byte[EncodeConstants.MAC_ADDRESS_LENGTH];
        input.readBytes(address);
        macAddress.setMacAddress(new MacAddress(ByteBufUtils.macAddressToString(address)));
        builder.addAugmentation(MacAddressMatchEntry.class, macAddress.build());
    }
}