/*
 * 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.protocol.bgp.parser.spi.pojo;

import com.google.common.collect.Lists;
import io.netty.buffer.ByteBuf;
import java.util.List;
import org.junit.Assert;
import org.mockito.Mock;
import org.mockito.Mockito;
import org.mockito.MockitoAnnotations;
import org.opendaylight.protocol.bgp.parser.BGPDocumentedException;
import org.opendaylight.protocol.bgp.parser.BGPParsingException;
import org.opendaylight.protocol.bgp.parser.spi.AbstractBGPExtensionProviderActivator;
import org.opendaylight.protocol.bgp.parser.spi.AttributeParser;
import org.opendaylight.protocol.bgp.parser.spi.AttributeSerializer;
import org.opendaylight.protocol.bgp.parser.spi.BGPExtensionProviderContext;
import org.opendaylight.protocol.bgp.parser.spi.BgpPrefixSidTlvParser;
import org.opendaylight.protocol.bgp.parser.spi.BgpPrefixSidTlvSerializer;
import org.opendaylight.protocol.bgp.parser.spi.CapabilityParser;
import org.opendaylight.protocol.bgp.parser.spi.CapabilitySerializer;
import org.opendaylight.protocol.bgp.parser.spi.MessageParser;
import org.opendaylight.protocol.bgp.parser.spi.MessageSerializer;
import org.opendaylight.protocol.bgp.parser.spi.NextHopParserSerializer;
import org.opendaylight.protocol.bgp.parser.spi.NlriParser;
import org.opendaylight.protocol.bgp.parser.spi.NlriSerializer;
import org.opendaylight.protocol.bgp.parser.spi.ParameterParser;
import org.opendaylight.protocol.bgp.parser.spi.ParameterSerializer;
import org.opendaylight.protocol.bgp.parser.spi.PeerSpecificParserConstraint;
import org.opendaylight.protocol.bgp.parser.spi.extended.community.ExtendedCommunityParser;
import org.opendaylight.protocol.bgp.parser.spi.extended.community.ExtendedCommunitySerializer;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv4Address;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.open.message.BgpParameters;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.open.message.bgp.parameters.optional.capabilities.CParameters;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.path.attributes.AttributesBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.path.attributes.attributes.bgp.prefix.sid.bgp.prefix.sid.tlvs.BgpPrefixSidTlv;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.attributes.MpReachNlriBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.attributes.MpUnreachNlriBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.Ipv4AddressFamily;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.Ipv6AddressFamily;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.UnicastSubsequentAddressFamily;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.extended.community.extended.community.RouteTargetIpv4Case;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.next.hop.CNextHop;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.next.hop.c.next.hop.Ipv4NextHopCase;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.next.hop.c.next.hop.Ipv4NextHopCaseBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.next.hop.c.next.hop.Ipv6NextHopCase;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.next.hop.c.next.hop.ipv4.next.hop._case.Ipv4NextHopBuilder;
import org.opendaylight.yangtools.yang.binding.DataObject;
import org.opendaylight.yangtools.yang.binding.Notification;

public class BgpTestActivator extends AbstractBGPExtensionProviderActivator {

    protected static final int TYPE = 0;
    private static final String EMPTY = "";

    @Mock
    protected AttributeSerializer attrSerializer;
    @Mock
    protected AttributeParser attrParser;

    @Mock
    protected ParameterParser paramParser;
    @Mock
    protected ParameterSerializer paramSerializer;

    @Mock
    protected CapabilityParser capaParser;
    @Mock
    protected CapabilitySerializer capaSerializer;

    @Mock
    protected MessageParser msgParser;
    @Mock
    protected MessageSerializer msgSerializer;

    @Mock
    protected NlriParser nlriParser;
    @Mock
    protected NlriSerializer nlriSerializer;

    @Mock
    protected ExtendedCommunityParser exParser;
    @Mock
    protected ExtendedCommunitySerializer exSerializer;

    protected NextHopParserSerializer nextHopParserSerializer;

    @Mock
    protected BgpPrefixSidTlvParser sidTlvParser;
    @Mock
    protected BgpPrefixSidTlvSerializer sidTlvSerializer;

    @Override
    protected List<AutoCloseable> startImpl(final BGPExtensionProviderContext context) {
        initMock();
        final List<AutoCloseable> regs = Lists.newArrayList();
        regs.add(context.registerAttributeParser(TYPE, this.attrParser));
        regs.add(context.registerAttributeSerializer(DataObject.class, this.attrSerializer));

        regs.add(context.registerParameterParser(TYPE, this.paramParser));
        regs.add(context.registerParameterSerializer(BgpParameters.class, this.paramSerializer));

        regs.add(context.registerCapabilityParser(TYPE, this.capaParser));
        regs.add(context.registerCapabilitySerializer(CParameters.class, this.capaSerializer));

        regs.add(context.registerBgpPrefixSidTlvParser(TYPE, this.sidTlvParser));
        regs.add(context.registerBgpPrefixSidTlvSerializer(BgpPrefixSidTlv.class, this.sidTlvSerializer));

        regs.add(context.registerMessageParser(TYPE, this.msgParser));
        regs.add(context.registerMessageSerializer(Notification.class, this.msgSerializer));

        regs.add(context.registerAddressFamily(Ipv4AddressFamily.class, 1));
        regs.add(context.registerAddressFamily(Ipv6AddressFamily.class, 2));
        regs.add(context.registerSubsequentAddressFamily(UnicastSubsequentAddressFamily.class, 1));

        this.nextHopParserSerializer = new NextHopParserSerializer() {
            @Override
            public CNextHop parseNextHop(final ByteBuf buffer) throws BGPParsingException {
                return new Ipv4NextHopCaseBuilder().setIpv4NextHop(new Ipv4NextHopBuilder().setGlobal(new Ipv4Address("127.0.0.1")).build()).build();
            }
            @Override
            public void serializeNextHop(final CNextHop cNextHop, final ByteBuf byteAggregator) {
                final byte[] mpReachBytes = {
                    0x7f, 0x00, 0x00, 0x01
                };
                byteAggregator.writeBytes(mpReachBytes);
            }
        };

        regs.add(context.registerNlriParser(Ipv4AddressFamily.class, UnicastSubsequentAddressFamily.class, this
            .nlriParser, this.nextHopParserSerializer, Ipv4NextHopCase.class));
        regs.add(context.registerNlriParser(Ipv6AddressFamily.class, UnicastSubsequentAddressFamily.class, this
            .nlriParser, this.nextHopParserSerializer, Ipv6NextHopCase.class));
        regs.add(context.registerNlriSerializer(DataObject.class, this.nlriSerializer));

        regs.add(context.registerExtendedCommunityParser(0, 0, this.exParser));
        regs.add(context.registerExtendedCommunitySerializer(RouteTargetIpv4Case.class, this.exSerializer));

        return regs;
    }

    private void initMock() {
        MockitoAnnotations.initMocks(this);
        try {
            Mockito.doNothing().when(this.attrParser).parseAttribute(Mockito.any(ByteBuf.class), Mockito.any(AttributesBuilder.class),
                Mockito.any(PeerSpecificParserConstraint.class));
            Mockito.doReturn(EMPTY).when(this.attrParser).toString();
            Mockito.doNothing().when(this.attrSerializer).serializeAttribute(Mockito.any(DataObject.class), Mockito.any(ByteBuf.class));
            Mockito.doReturn(EMPTY).when(this.attrSerializer).toString();

            Mockito.doReturn(null).when(this.paramParser).parseParameter(Mockito.any(ByteBuf.class));
            Mockito.doReturn(EMPTY).when(this.paramParser).toString();
            Mockito.doNothing().when(this.paramSerializer).serializeParameter(Mockito.any(BgpParameters.class), Mockito.any(ByteBuf.class));
            Mockito.doReturn(EMPTY).when(this.paramSerializer).toString();

            Mockito.doReturn(null).when(this.capaParser).parseCapability(Mockito.any(ByteBuf.class));
            Mockito.doReturn(EMPTY).when(this.capaParser).toString();
            Mockito.doNothing().when(this.capaSerializer).serializeCapability(Mockito.any(CParameters.class), Mockito.any(ByteBuf.class));
            Mockito.doReturn(EMPTY).when(this.capaSerializer).toString();

            Mockito.doReturn(null).when(this.sidTlvParser).parseBgpPrefixSidTlv(Mockito.any(ByteBuf.class));
            Mockito.doReturn(EMPTY).when(this.sidTlvParser).toString();
            Mockito.doNothing().when(this.sidTlvSerializer).serializeBgpPrefixSidTlv(Mockito.any(BgpPrefixSidTlv.class), Mockito.any(ByteBuf.class));
            Mockito.doReturn(EMPTY).when(this.sidTlvSerializer).toString();
            Mockito.doReturn(0).when(this.sidTlvSerializer).getType();

            Mockito.doReturn(Mockito.mock(Notification.class)).when(this.msgParser).parseMessageBody(Mockito.any(ByteBuf.class), Mockito.anyInt(),
                Mockito.any(PeerSpecificParserConstraint.class));
            Mockito.doReturn(EMPTY).when(this.msgParser).toString();
            Mockito.doNothing().when(this.msgSerializer).serializeMessage(Mockito.any(Notification.class), Mockito.any(ByteBuf.class));
            Mockito.doReturn(EMPTY).when(this.msgSerializer).toString();

            Mockito.doNothing().when(this.nlriParser).parseNlri(Mockito.any(ByteBuf.class), Mockito.any(MpUnreachNlriBuilder.class), Mockito.any());
            Mockito.doNothing().when(this.nlriParser).parseNlri(Mockito.any(ByteBuf.class), Mockito.any(MpReachNlriBuilder.class), Mockito.any());
            Mockito.doReturn(EMPTY).when(this.nlriParser).toString();

        } catch (BGPDocumentedException | BGPParsingException e) {
            Assert.fail();
        }
    }

}