/*
 * 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.parser.object;

import static com.google.common.base.Preconditions.checkArgument;
import static org.opendaylight.protocol.util.ByteBufWriteUtil.writeFloat32;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import org.opendaylight.protocol.pcep.PCEPDeserializerException;
import org.opendaylight.protocol.pcep.spi.CommonObjectParser;
import org.opendaylight.protocol.pcep.spi.ObjectSerializer;
import org.opendaylight.protocol.pcep.spi.ObjectUtil;
import org.opendaylight.protocol.util.ByteArray;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.ObjectHeader;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.reoptimization.bandwidth.object.ReoptimizationBandwidth;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.reoptimization.bandwidth.object.ReoptimizationBandwidthBuilder;

/**
 * Parser for Bandwidth.
 */
public class PCEPExistingBandwidthObjectParser extends CommonObjectParser implements ObjectSerializer {

    private static final int CLASS = 5;

    private static final int TYPE = 2;

    public PCEPExistingBandwidthObjectParser() {
        super(CLASS, TYPE);
    }

    @Override
    public ReoptimizationBandwidth parseObject(final ObjectHeader header, final ByteBuf bytes)
            throws PCEPDeserializerException {
        checkArgument(bytes != null && bytes.isReadable(), "Array of bytes is mandatory. Can't be null or empty.");
        if (bytes.readableBytes() != PCEPBandwidthObjectParser.BANDWIDTH_F_LENGTH) {
            throw new PCEPDeserializerException("Wrong length of array of bytes. Passed: " + bytes.readableBytes()
                    + "; Expected: " + PCEPBandwidthObjectParser.BANDWIDTH_F_LENGTH + ".");
        }
        final ReoptimizationBandwidthBuilder builder = new ReoptimizationBandwidthBuilder()
                .setIgnore(header.getIgnore())
                .setProcessingRule(header.getProcessingRule())
                .setBandwidth(
                    new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.network.concepts.rev131125
                        .Bandwidth(ByteArray.getAllBytes(bytes)));
        return builder.build();
    }

    @Override
    public void serializeObject(
            final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.Object object,
            final ByteBuf buffer) {
        checkArgument(object instanceof ReoptimizationBandwidth,
                "Wrong instance of PCEPObject. Passed " + "%s. Needed ReoptimizationBandwidthObject.",
                object.getClass());
        final ByteBuf body = Unpooled.buffer();
        writeFloat32(((ReoptimizationBandwidth) object).getBandwidth(), body);
        ObjectUtil.formatSubobject(TYPE, CLASS, object.getProcessingRule(), object.getIgnore(), body, buffer);
    }
}