/*
 * Copyright (c) 2017 Cisco and/or its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package io.fd.hc2vpp.dhcp.read;

import com.google.common.collect.ImmutableSet;
import com.google.inject.Inject;
import io.fd.honeycomb.translate.impl.read.GenericInitListReader;
import io.fd.honeycomb.translate.read.ReaderFactory;
import io.fd.honeycomb.translate.read.registry.ModifiableReaderRegistryBuilder;
import io.fd.vpp.jvpp.core.future.FutureJVppCore;
import javax.annotation.Nonnull;
import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.dhcp.rev180629.Dhcp;
import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.dhcp.rev180629.DhcpBuilder;
import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.dhcp.rev180629.dhcp.attributes.Relays;
import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.dhcp.rev180629.dhcp.attributes.RelaysBuilder;
import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.dhcp.rev180629.dhcp.attributes.relays.Relay;
import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.dhcp.rev180629.relay.attributes.Server;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;

/**
 * Factory producing writers for DHCP plugin's data.
 */
public final class DhcpReaderFactory implements ReaderFactory {

    private static final InstanceIdentifier<Dhcp> DHCP_ID = InstanceIdentifier.create(Dhcp.class);
    private static final InstanceIdentifier<Relays> RELAYS_ID = DHCP_ID.child(Relays.class);
    private static final InstanceIdentifier<Relay> RELAY_ID = RELAYS_ID.child(Relay.class);

    @Inject
    private FutureJVppCore vppApi;

    @Override
    public void init(@Nonnull final ModifiableReaderRegistryBuilder registry) {
        registry.addStructuralReader(DHCP_ID, DhcpBuilder.class);
        registry.addStructuralReader(RELAYS_ID, RelaysBuilder.class);
        registry.subtreeAdd(
            ImmutableSet.of(InstanceIdentifier.create(Relay.class).child(Server.class)),
            new GenericInitListReader<>(RELAY_ID, new io.fd.hc2vpp.dhcp.read.DhcpRelayCustomizer(vppApi))
        );
    }
}