/*
 * 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.serialization.factories;

import io.netty.buffer.ByteBuf;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
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.opendaylight.openflow.common.types.rev130731.FlowRemovedReason;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.PacketInReason;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.PortReason;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.GetAsyncOutput;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.async.body.grouping.FlowRemovedMask;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.async.body.grouping.PacketInMask;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.async.body.grouping.PortStatusMask;

/**
 * @author giuseppex.petralia@intel.com
 *
 */

public class GetAsyncReplyMessageFactory implements OFSerializer<GetAsyncOutput> {
    private static final byte MESSAGE_TYPE = 27;

    @Override
    public void serialize(GetAsyncOutput message, ByteBuf outBuffer) {
        ByteBufUtils.writeOFHeader(MESSAGE_TYPE, message, outBuffer, EncodeConstants.EMPTY_LENGTH);
        serializePacketInMask(message.getPacketInMask(), outBuffer);
        serializePortStatusMask(message.getPortStatusMask(), outBuffer);
        serializeFlowRemovedMask(message.getFlowRemovedMask(), outBuffer);
        ByteBufUtils.updateOFHeaderLength(outBuffer);
    }

    private static void serializePacketInMask(List<PacketInMask> packetInMask, ByteBuf outBuffer) {
        if (packetInMask != null) {
            for (PacketInMask currentPacketMask : packetInMask) {
                List<PacketInReason> mask = currentPacketMask.getMask();
                if (mask != null) {
                    Map<Integer, Boolean> packetInReasonMap = new HashMap<>();
                    for (PacketInReason packetInReason : mask) {
                        if (PacketInReason.OFPRNOMATCH.equals(packetInReason)) {
                            packetInReasonMap.put(PacketInReason.OFPRNOMATCH.getIntValue(), true);
                        } else if (PacketInReason.OFPRACTION.equals(packetInReason)) {
                            packetInReasonMap.put(PacketInReason.OFPRACTION.getIntValue(), true);
                        } else if (PacketInReason.OFPRINVALIDTTL.equals(packetInReason)) {
                            packetInReasonMap.put(PacketInReason.OFPRINVALIDTTL.getIntValue(), true);
                        }
                    }
                    outBuffer.writeInt(ByteBufUtils.fillBitMaskFromMap(packetInReasonMap));
                }
            }
        }
    }

    private static void serializePortStatusMask(List<PortStatusMask> portStatusMask, ByteBuf outBuffer) {
        if (portStatusMask != null) {
            for (PortStatusMask currentPortStatusMask : portStatusMask) {
                List<PortReason> mask = currentPortStatusMask.getMask();
                if (mask != null) {
                    Map<Integer, Boolean> portStatusReasonMap = new HashMap<>();
                    for (PortReason packetInReason : mask) {
                        if (PortReason.OFPPRADD.equals(packetInReason)) {
                            portStatusReasonMap.put(PortReason.OFPPRADD.getIntValue(), true);
                        } else if (PortReason.OFPPRDELETE.equals(packetInReason)) {
                            portStatusReasonMap.put(PortReason.OFPPRDELETE.getIntValue(), true);
                        } else if (PortReason.OFPPRMODIFY.equals(packetInReason)) {
                            portStatusReasonMap.put(PortReason.OFPPRMODIFY.getIntValue(), true);
                        }
                    }
                    outBuffer.writeInt(ByteBufUtils.fillBitMaskFromMap(portStatusReasonMap));
                }
            }
        }
    }

    private static void serializeFlowRemovedMask(List<FlowRemovedMask> flowRemovedMask, ByteBuf outBuffer) {
        if (flowRemovedMask != null) {
            for (FlowRemovedMask currentFlowRemovedMask : flowRemovedMask) {
                List<FlowRemovedReason> mask = currentFlowRemovedMask.getMask();
                if (mask != null) {
                    Map<Integer, Boolean> flowRemovedReasonMap = new HashMap<>();
                    for (FlowRemovedReason packetInReason : mask) {
                        if (FlowRemovedReason.OFPRRIDLETIMEOUT.equals(packetInReason)) {
                            flowRemovedReasonMap.put(FlowRemovedReason.OFPRRIDLETIMEOUT.getIntValue(), true);
                        } else if (FlowRemovedReason.OFPRRHARDTIMEOUT.equals(packetInReason)) {
                            flowRemovedReasonMap.put(FlowRemovedReason.OFPRRHARDTIMEOUT.getIntValue(), true);
                        } else if (FlowRemovedReason.OFPRRDELETE.equals(packetInReason)) {
                            flowRemovedReasonMap.put(FlowRemovedReason.OFPRRDELETE.getIntValue(), true);
                        } else if (FlowRemovedReason.OFPRRGROUPDELETE.equals(packetInReason)) {
                            flowRemovedReasonMap.put(FlowRemovedReason.OFPRRGROUPDELETE.getIntValue(), true);
                        }
                    }
                    outBuffer.writeInt(ByteBufUtils.fillBitMaskFromMap(flowRemovedReasonMap));
                }
            }
        }
    }

}