/*
 * 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.openflowplugin.extension.vendor.nicira.convertor.match;

import java.util.Optional;
import org.opendaylight.openflowjava.nx.api.NiciraConstants;
import org.opendaylight.openflowplugin.extension.api.ConvertorFromOFJava;
import org.opendaylight.openflowplugin.extension.api.ConvertorToOFJava;
import org.opendaylight.openflowplugin.extension.api.ExtensionAugment;
import org.opendaylight.openflowplugin.extension.api.path.MatchPath;
import org.opendaylight.openflowplugin.extension.vendor.nicira.convertor.CodecPreconditionException;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev150225.oxm.container.match.entry.value.ExperimenterIdCase;
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.OfjAugNxExpMatch;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowjava.nx.match.rev140421.oxm.container.match.entry.value.experimenter.id._case.nx.exp.match.entry.value.NshcCaseValue;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowjava.nx.match.rev140421.oxm.container.match.entry.value.experimenter.id._case.nx.exp.match.entry.value.NshcCaseValueBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowplugin.extension.general.rev140714.ExtensionKey;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowplugin.extension.general.rev140714.general.extension.grouping.Extension;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowplugin.extension.nicira.match.rev140714.NxAugMatchNodesNodeTableFlow;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowplugin.extension.nicira.match.rev140714.NxAugMatchNodesNodeTableFlowBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowplugin.extension.nicira.match.rev140714.NxAugMatchNotifPacketIn;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowplugin.extension.nicira.match.rev140714.NxAugMatchNotifPacketInBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowplugin.extension.nicira.match.rev140714.NxAugMatchNotifSwitchFlowRemoved;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowplugin.extension.nicira.match.rev140714.NxAugMatchNotifSwitchFlowRemovedBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowplugin.extension.nicira.match.rev140714.NxAugMatchPacketInMessage;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowplugin.extension.nicira.match.rev140714.NxAugMatchPacketInMessageBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowplugin.extension.nicira.match.rev140714.NxAugMatchRpcGetFlowStats;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowplugin.extension.nicira.match.rev140714.NxAugMatchRpcGetFlowStatsBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowplugin.extension.nicira.match.rev140714.NxmNxNshc1Grouping;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowplugin.extension.nicira.match.rev140714.NxmNxNshc1Key;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowplugin.extension.nicira.match.rev140714.nxm.nx.nshc._1.grouping.NxmNxNshc1;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowplugin.extension.nicira.match.rev140714.nxm.nx.nshc._1.grouping.NxmNxNshc1Builder;
import org.opendaylight.yangtools.yang.binding.Augmentation;

public class Nshc1Convertor implements ConvertorToOFJava<MatchEntry>, ConvertorFromOFJava<MatchEntry, MatchPath> {

    @Override
    public ExtensionAugment<? extends Augmentation<Extension>> convert(MatchEntry input, MatchPath path) {
        ExperimenterIdCase experimenterIdCase = (ExperimenterIdCase) input.getMatchEntryValue();
        OfjAugNxExpMatch ofjAugNxExpMatch = experimenterIdCase.augmentation(OfjAugNxExpMatch.class);
        NshcCaseValue nshcCaseValue = (NshcCaseValue) ofjAugNxExpMatch.getNxExpMatchEntryValue();
        NxmNxNshc1 nxmNxNshc1 = new NxmNxNshc1Builder()
                .setValue(nshcCaseValue.getNshc())
                .setMask(nshcCaseValue.getMask())
                .build();
        return resolveAugmentation(nxmNxNshc1, path, NxmNxNshc1Key.class);
    }

    @Override
    public MatchEntry convert(Extension extension) {
        Optional<NxmNxNshc1Grouping> matchGrouping = MatchUtil.NSC1_RESOLVER.findExtension(extension);
        if (!matchGrouping.isPresent()) {
            throw new CodecPreconditionException(extension);
        }
        Long value = matchGrouping.get().getNxmNxNshc1().getValue();
        Long mask = matchGrouping.get().getNxmNxNshc1().getMask();
        MatchEntry matchEntry = buildMatchEntry(value, mask);
        return matchEntry;
    }

    public static MatchEntry buildMatchEntry(Long value, Long mask) {
        NshcCaseValue nshcCaseValue = new NshcCaseValueBuilder().setNshc(value).setMask(mask).build();
        return MatchUtil.createExperimenterMatchEntryBuilder(
                org.opendaylight.yang.gen.v1.urn.opendaylight.openflowjava.nx.match.rev140421.NxmNxNshc1.class,
                NiciraConstants.NX_NSH_VENDOR_ID,
                nshcCaseValue).setHasMask(mask != null).build();
    }

    private static ExtensionAugment<? extends Augmentation<Extension>> resolveAugmentation(
            NxmNxNshc1 value,
            MatchPath path, Class<? extends ExtensionKey> key) {
        switch (path) {
            case FLOWS_STATISTICS_UPDATE_MATCH:
                return new ExtensionAugment<>(NxAugMatchNodesNodeTableFlow.class,
                        new NxAugMatchNodesNodeTableFlowBuilder().setNxmNxNshc1(value).build(), key);
            case FLOWS_STATISTICS_RPC_MATCH:
                return new ExtensionAugment<>(NxAugMatchRpcGetFlowStats.class,
                        new NxAugMatchRpcGetFlowStatsBuilder().setNxmNxNshc1(value).build(), key);
            case PACKET_RECEIVED_MATCH:
                return new ExtensionAugment<>(NxAugMatchNotifPacketIn.class, new NxAugMatchNotifPacketInBuilder()
                        .setNxmNxNshc1(value).build(), key);
            case SWITCH_FLOW_REMOVED_MATCH:
                return new ExtensionAugment<>(NxAugMatchNotifSwitchFlowRemoved.class,
                        new NxAugMatchNotifSwitchFlowRemovedBuilder().setNxmNxNshc1(value).build(), key);
            case PACKET_IN_MESSAGE_MATCH:
                return new ExtensionAugment<>(NxAugMatchPacketInMessage.class,
                        new NxAugMatchPacketInMessageBuilder().setNxmNxNshc1(value).build(), key);
            default:
                throw new CodecPreconditionException(path);
        }
    }
}