/* Copyright (C)2013 Pantheon Technologies, s.r.o. All rights reserved. */
package org.opendaylight.openflowjava.protocol.impl.serialization.factories;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.UnpooledByteBufAllocator;
import junit.framework.Assert;

import org.junit.Test;
import org.opendaylight.openflowjava.protocol.impl.deserialization.factories.HelloMessageFactoryTest;
import org.opendaylight.openflowjava.protocol.impl.util.BufferHelper;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev100924.MacAddress;
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 timotej.kubas
 * @author michal.polkorab
 */
public class PortModInputMessageFactoryTest {
    private static final byte MESSAGE_TYPE = 16;
    private static final byte PADDING_IN_PORT_MOD_MESSAGE_01 = 4;
    private static final byte PADDING_IN_PORT_MOD_MESSAGE_02 = 2;
    private static final byte PADDING_IN_PORT_MOD_MESSAGE_03 = 4;
    private static final int MESSAGE_LENGTH = 40;
    
    /**
     * Testing of {@link PortModInputMessageFactory} for correct translation from POJO
     * @throws Exception 
     */
    @Test
    public void testPortModInput() throws Exception {
        PortModInputBuilder builder = new PortModInputBuilder();
        BufferHelper.setupHeader(builder);
        builder.setPortNo(new PortNumber(9L));
        builder.setHwAddress(new MacAddress("08002700B0EB"));
        builder.setConfig(new PortConfig(true, false, true, false));
        builder.setMask(new PortConfig(false, true, false, true));
        builder.setAdvertise(new PortFeatures(true, false, false, false,
                                              false, false, false, true, 
                                              false, false, false, false, 
                                              false, false, false, false));
        PortModInput message = builder.build();
        
        ByteBuf out = UnpooledByteBufAllocator.DEFAULT.buffer();
        PortModInputMessageFactory factory = PortModInputMessageFactory.getInstance();
        factory.messageToBuffer(HelloMessageFactoryTest.VERSION_YET_SUPPORTED, out, message);
        
        BufferHelper.checkHeaderV13(out, MESSAGE_TYPE, MESSAGE_LENGTH);
        Assert.assertEquals("Wrong PortNo", message.getPortNo().getValue().longValue(), out.readUnsignedInt());
        out.skipBytes(PADDING_IN_PORT_MOD_MESSAGE_01);
        Assert.assertEquals("Wrong MacAddress", message.getHwAddress().getValue(), new MacAddress(makeMacAddress(out)).getValue());
        out.skipBytes(PADDING_IN_PORT_MOD_MESSAGE_02);
        Assert.assertEquals("Wrong config", message.getConfig(), createPortConfig(out.readInt()));
        Assert.assertEquals("Wrong mask", message.getMask(), createPortConfig(out.readInt()));
        Assert.assertEquals("Wrong advertise", message.getAdvertise(), createPortFeatures(out.readInt()));
        out.skipBytes(PADDING_IN_PORT_MOD_MESSAGE_03);
    }

    private static PortConfig createPortConfig(long input){
        final Boolean _portDown   = ((input) & 0x01) > 0;
        final Boolean _noRecv    = ((input) & 0x04) > 0;
        final Boolean _noFwd       = ((input) & 0x20) > 0;
        final Boolean _noPacketIn = ((input) & 0x40) > 0;
        return new PortConfig(_portDown, _noRecv, _noFwd, _noPacketIn);
    }
    
    private static PortFeatures createPortFeatures(long input){
        final Boolean _10mbHd = ((input) & 0x01) > 0;
        final Boolean _10mbFd = ((input) & 0x02) > 0;
        final Boolean _100mbHd = ((input) & 0x04) > 0;
        final Boolean _100mbFd = ((input) & 0x08) > 0;
        final Boolean _1gbHd = ((input) & 0x10) > 0;
        final Boolean _1gbFd = ((input) & 0x20) > 0;
        final Boolean _10gbFd = ((input) & 0x40) > 0;
        final Boolean _40gbFd = ((input) & 0x80) > 0;
        final Boolean _100gbFd = ((input) & 0x100) > 0;
        final Boolean _1tbFd = ((input) & 0x200) > 0;
        final Boolean _other = ((input) & 0x400) > 0;
        final Boolean _copper = ((input) & 0x800) > 0;
        final Boolean _fiber = ((input) & 0x1000) > 0;
        final Boolean _autoneg = ((input) & 0x2000) > 0;
        final Boolean _pause = ((input) & 0x4000) > 0;
        final Boolean _pauseAsym = ((input) & 0x8000) > 0;
        return new PortFeatures(_10mbHd, _10mbFd, _100mbHd, _100mbFd, _1gbHd, _1gbFd, _10gbFd,
                _40gbFd, _100gbFd, _1tbFd, _other, _copper, _fiber, _autoneg, _pause, _pauseAsym);
    }
    
    private static String makeMacAddress(ByteBuf input) {
        final int macAddressLength = 6;
        StringBuffer macToString = new StringBuffer();
        
        for(int i=0; i<macAddressLength; i++){
            short mac = 0;
            mac = input.readUnsignedByte();
            macToString.append(String.format("%02X", mac));
        }
        return macToString.toString();
    }
}