/*
 * Copyright (c) 2014 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.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.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.MacAddress;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev150225.Nxm0Class;
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.ofj.nxm.of.match.eth.dst.grouping.EthDstValuesBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowjava.nx.match.rev140421.oxm.container.match.entry.value.EthDstCaseValue;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowjava.nx.match.rev140421.oxm.container.match.entry.value.EthDstCaseValueBuilder;
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.NxmOfEthDstGrouping;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowplugin.extension.nicira.match.rev140714.NxmOfEthDstKey;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowplugin.extension.nicira.match.rev140714.nxm.of.eth.dst.grouping.NxmOfEthDst;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowplugin.extension.nicira.match.rev140714.nxm.of.eth.dst.grouping.NxmOfEthDstBuilder;
import org.opendaylight.yangtools.yang.binding.Augmentation;

/**
 * Convert to/from SAL flow model to openflowjava model for EthDstCase.
 *
 * @author msunal
 */
public class EthDstConvertor implements ConvertorToOFJava<MatchEntry>, ConvertorFromOFJava<MatchEntry, MatchPath> {

    @Override
    public ExtensionAugment<? extends Augmentation<Extension>> convert(MatchEntry input, MatchPath path) {
        EthDstCaseValue ethDstCaseValue = (EthDstCaseValue) input.getMatchEntryValue();
        return resolveAugmentation(
                new NxmOfEthDstBuilder().setMacAddress(ethDstCaseValue.getEthDstValues().getMacAddress()).build(), path,
                NxmOfEthDstKey.class);
    }

    @Override
    public MatchEntry convert(Extension extension) {
        Optional<NxmOfEthDstGrouping> matchGrouping = MatchUtil.ETH_DST_RESOLVER.findExtension(extension);
        if (!matchGrouping.isPresent()) {
            throw new CodecPreconditionException(extension);
        }
        MacAddress macAddress = matchGrouping.get().getNxmOfEthDst().getMacAddress();
        EthDstCaseValueBuilder ethDstCaseValueBuilder = new EthDstCaseValueBuilder();
        ethDstCaseValueBuilder.setEthDstValues(new EthDstValuesBuilder()
                .setMacAddress(macAddress).build());
        return MatchUtil.createDefaultMatchEntryBuilder(
                org.opendaylight.yang.gen.v1.urn.opendaylight.openflowjava.nx.match.rev140421.NxmOfEthDst.class,
                Nxm0Class.class, ethDstCaseValueBuilder.build()).build();
    }

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