/*
 * Copyright (c) 2013 Pantheon Technologies s.r.o. 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.openflowjava.protocol.impl.serialization.factories;

import io.netty.buffer.ByteBuf;
import org.opendaylight.openflowjava.protocol.api.extensibility.OFSerializer;
import org.opendaylight.openflowjava.protocol.api.util.EncodeConstants;
import org.opendaylight.openflowjava.util.ByteBufUtils;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.IetfYangUtil;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.PortConfigV10;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.PortFeaturesV10;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.PortModInput;

/**
 * Translates PortMod messages.
 *
 * @author michal.polkorab
 */
public class OF10PortModInputMessageFactory implements OFSerializer<PortModInput> {

    private static final byte MESSAGE_TYPE = 15;
    private static final byte PADDING_IN_PORT_MOD_MESSAGE = 4;

    @Override
    public void serialize(final PortModInput message, final ByteBuf outBuffer) {
        ByteBufUtils.writeOFHeader(MESSAGE_TYPE, message, outBuffer, EncodeConstants.EMPTY_LENGTH);
        outBuffer.writeShort(message.getPortNo().getValue().intValue());
        outBuffer.writeBytes(IetfYangUtil.macAddressBytes(message.getHwAddress()));
        outBuffer.writeInt(createPortConfigBitmask(message.getConfigV10()));
        outBuffer.writeInt(createPortConfigBitmask(message.getMaskV10()));
        outBuffer.writeInt(createPortFeaturesBitmask(message.getAdvertiseV10()));
        outBuffer.writeZero(PADDING_IN_PORT_MOD_MESSAGE);
        ByteBufUtils.updateOFHeaderLength(outBuffer);
    }

    private static int createPortConfigBitmask(final PortConfigV10 config) {
        return ByteBufUtils.fillBitMask(0,
                config.getPortDown(),
                config.getNoStp(),
                config.getNoRecv(),
                config.getNoRecvStp(),
                config.getNoFlood(),
                config.getNoFwd(),
                config.getNoPacketIn());
    }

    private static int createPortFeaturesBitmask(final PortFeaturesV10 feature) {
        return ByteBufUtils.fillBitMask(0,
                feature.get_10mbHd(),
                feature.get_10mbFd(),
                feature.get_100mbHd(),
                feature.get_100mbFd(),
                feature.get_1gbHd(),
                feature.get_1gbFd(),
                feature.get_10gbFd(),
                feature.getCopper(),
                feature.getFiber(),
                feature.getAutoneg(),
                feature.getPause(),
                feature.getPauseAsym());
    }

}