/*
 * Copyright (c) 2015 NetIDE Consortium 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.deserialization.factories;

import io.netty.buffer.ByteBuf;
import org.opendaylight.openflowjava.protocol.api.extensibility.OFDeserializer;
import org.opendaylight.openflowjava.protocol.api.util.EncodeConstants;
import org.opendaylight.openflowjava.util.ByteBufUtils;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.PortConfig;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.PortFeatures;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.PortNumber;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.PortModInput;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.PortModInputBuilder;

/**
 * @author giuseppex.petralia@intel.com
 *
 */
public class PortModInputMessageFactory implements OFDeserializer<PortModInput> {

    private static final byte PADDING_IN_PORT_MOD_MESSAGE_1 = 4;
    private static final byte PADDING_IN_PORT_MOD_MESSAGE_2 = 2;
    private static final byte PADDING_IN_PORT_MOD_MESSAGE_3 = 4;

    @Override
    public PortModInput deserialize(final ByteBuf rawMessage) {
        PortModInputBuilder builder = new PortModInputBuilder();
        builder.setVersion((short) EncodeConstants.OF13_VERSION_ID);
        builder.setXid(rawMessage.readUnsignedInt());
        builder.setPortNo(new PortNumber(rawMessage.readUnsignedInt()));
        rawMessage.skipBytes(PADDING_IN_PORT_MOD_MESSAGE_1);
        builder.setHwAddress(ByteBufUtils.readIetfMacAddress(rawMessage));
        rawMessage.skipBytes(PADDING_IN_PORT_MOD_MESSAGE_2);
        builder.setConfig(createPortConfig(rawMessage.readUnsignedInt()));
        builder.setMask(createPortConfig(rawMessage.readUnsignedInt()));
        builder.setAdvertise(createPortFeatures(rawMessage.readUnsignedInt()));
        rawMessage.skipBytes(PADDING_IN_PORT_MOD_MESSAGE_3);
        return builder.build();
    }

    private static PortConfig createPortConfig(final long input) {
        final Boolean pcPortDown = ((input) & (1 << 0)) != 0;
        final Boolean pcNRecv = ((input) & (1 << 2)) != 0;
        final Boolean pcNFwd = ((input) & (1 << 5)) != 0;
        final Boolean pcNPacketIn = ((input) & (1 << 6)) != 0;
        return new PortConfig(pcNFwd, pcNPacketIn, pcNRecv, pcPortDown);
    }

    private static PortFeatures createPortFeatures(final long input) {
        final Boolean pf10mbHd = ((input) & (1 << 0)) != 0;
        final Boolean pf10mbFd = ((input) & (1 << 1)) != 0;
        final Boolean pf100mbHd = ((input) & (1 << 2)) != 0;
        final Boolean pf100mbFd = ((input) & (1 << 3)) != 0;
        final Boolean pf1gbHd = ((input) & (1 << 4)) != 0;
        final Boolean pf1gbFd = ((input) & (1 << 5)) != 0;
        final Boolean pf10gbFd = ((input) & (1 << 6)) != 0;
        final Boolean pf40gbFd = ((input) & (1 << 7)) != 0;
        final Boolean pf100gbFd = ((input) & (1 << 8)) != 0;
        final Boolean pf1tbFd = ((input) & (1 << 9)) != 0;
        final Boolean pfOther = ((input) & (1 << 10)) != 0;
        final Boolean pfCopper = ((input) & (1 << 11)) != 0;
        final Boolean pfFiber = ((input) & (1 << 12)) != 0;
        final Boolean pfAutoneg = ((input) & (1 << 13)) != 0;
        final Boolean pfPause = ((input) & (1 << 14)) != 0;
        final Boolean pfPauseAsym = ((input) & (1 << 15)) != 0;
        return new PortFeatures(pf100gbFd, pf100mbFd, pf100mbHd, pf10gbFd, pf10mbFd, pf10mbHd, pf1gbFd, pf1gbHd,
                pf1tbFd, pf40gbFd, pfAutoneg, pfCopper, pfFiber, pfOther, pfPause, pfPauseAsym);
    }
}