/*
 * Copyright (c) 2016 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.openflowplugin.openflow.md.core.sal.convertor.match.cases;

import java.util.Optional;
import javax.annotation.Nonnull;
import org.opendaylight.openflowplugin.api.OFConstants;
import org.opendaylight.openflowplugin.openflow.md.core.sal.convertor.ConvertorExecutor;
import org.opendaylight.openflowplugin.openflow.md.core.sal.convertor.common.ConvertorCase;
import org.opendaylight.openflowplugin.openflow.md.core.sal.convertor.match.data.MatchResponseConvertorData;
import org.opendaylight.openflowplugin.openflow.md.util.ByteUtil;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv6FlowLabel;
import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.flow.MatchBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.model.match.types.rev131026.ipv6.match.fields.Ipv6LabelBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.model.match.types.rev131026.match.layer._3.match.Ipv6MatchBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev150225.match.entry.value.grouping.match.entry.value.Ipv6FlabelCase;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev150225.match.entry.value.grouping.match.entry.value.ipv6.flabel._case.Ipv6Flabel;

public class OfToSalIpv6FlabelCase extends ConvertorCase<Ipv6FlabelCase, MatchBuilder, MatchResponseConvertorData> {
    public OfToSalIpv6FlabelCase() {
        super(Ipv6FlabelCase.class, true, OFConstants.OFP_VERSION_1_0, OFConstants.OFP_VERSION_1_3);
    }

    @Override
    public Optional<MatchBuilder> process(@Nonnull Ipv6FlabelCase source, MatchResponseConvertorData data, ConvertorExecutor convertorExecutor) {
        final MatchBuilder matchBuilder = data.getMatchBuilder();
        final Ipv6MatchBuilder ipv6MatchBuilder = data.getIpv6MatchBuilder();

        Ipv6Flabel ipv6Flabel = source.getIpv6Flabel();

        if (ipv6Flabel != null) {
            Ipv6LabelBuilder ipv6LabelBuilder = new Ipv6LabelBuilder();
            ipv6LabelBuilder.setIpv6Flabel(new Ipv6FlowLabel(ipv6Flabel.getIpv6Flabel()));
            byte[] mask = ipv6Flabel.getMask();

            if (mask != null) {
                ipv6LabelBuilder.setFlabelMask(new Ipv6FlowLabel(ByteUtil.bytesToUnsignedInt(mask)));
            }

            ipv6MatchBuilder.setIpv6Label(ipv6LabelBuilder.build());
            matchBuilder.setLayer3Match(ipv6MatchBuilder.build());
        }

        return Optional.of(matchBuilder);
    }
}