/*
 * Copyright (c) 2013 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.pcep.spi.pojo;

import com.google.common.base.Preconditions;

import io.netty.buffer.ByteBuf;

import org.opendaylight.protocol.concepts.HandlerRegistry;
import org.opendaylight.protocol.pcep.spi.PCEPDeserializerException;
import org.opendaylight.protocol.pcep.spi.XROSubobjectParser;
import org.opendaylight.protocol.pcep.spi.XROSubobjectRegistry;
import org.opendaylight.protocol.pcep.spi.XROSubobjectSerializer;
import org.opendaylight.protocol.util.Values;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.exclude.route.object.xro.Subobject;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev130820.basic.explicit.route.subobjects.SubobjectType;
import org.opendaylight.yangtools.yang.binding.DataContainer;

public final class SimpleXROSubobjectRegistry implements XROSubobjectRegistry {
    private final HandlerRegistry<DataContainer, XROSubobjectParser, XROSubobjectSerializer> handlers = new HandlerRegistry<>();

    public AutoCloseable registerSubobjectParser(final int subobjectType, final XROSubobjectParser parser) {
        Preconditions.checkArgument(subobjectType >= 0 && subobjectType <= Values.UNSIGNED_SHORT_MAX_VALUE);
        return this.handlers.registerParser(subobjectType, parser);
    }

    public AutoCloseable registerSubobjectSerializer(final Class<? extends SubobjectType> subobjectClass,
            final XROSubobjectSerializer serializer) {
        return this.handlers.registerSerializer(subobjectClass, serializer);
    }

    @Override
    public Subobject parseSubobject(final int type, final ByteBuf buffer, final boolean mandatory) throws PCEPDeserializerException {
        Preconditions.checkArgument(type >= 0 && type <= Values.UNSIGNED_SHORT_MAX_VALUE);
        final XROSubobjectParser parser = this.handlers.getParser(type);
        if (parser == null) {
            return null;
        }
        return parser.parseSubobject(buffer, mandatory);
    }

    @Override
    public byte[] serializeSubobject(Subobject subobject) {
        final XROSubobjectSerializer serializer = this.handlers.getSerializer(subobject.getSubobjectType().getImplementedInterface());
        if (serializer == null) {
            return null;
        }
        return serializer.serializeSubobject(subobject);
    }
}