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// The MIT License (MIT)
//
// Copyright (c) 2014-2016 Brno University of Technology, PRISTINE project
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

#include "IntPDUFG.h"
#include <vector>

IntPDUFG::IntPDUFG(){}

IntPDUFG::~ IntPDUFG(){}

void IntPDUFG::initialize(){
    // Display active policy name.
    cDisplayString& disp = getDisplayString();
    disp.setTagArg("t", 1, "t");
    disp.setTagArg("t", 0, getClassName());

    //Set Forwarding policy
    fwd = check_and_cast<IntPDUForwarding *>
        (getModuleByPath("^.^.relayAndMux.pduForwardingPolicy"));
    onPolicyInit();
}

PDUFGNeighbor * IntPDUFG::getNextNeighbor(const Address &destination, const std::string& qos){

    RMTPorts ports = fwd->lookup(destination, qos);
    if(ports.size() >= 0){
        for(RMTPorts::iterator it = ports.begin(); it != ports.end(); it++){
            RMTPort * p = (*it);
            for(EIter it2 = neiState.begin(); it2 != neiState.end(); ++it2 ){
                PDUFGNeighbor * e = (*it2);
                // Found the port used for the forwarding table; so it's the next neighbor.
                if(p == e->getPort()){
                        return e;
                }
            }
        }
    }

    return NULL;
}

void IntPDUFG::insertFlowInfo(Address addr, QoSCube qos, RMTPort * port) {
    EV << "New flow -> <" << addr << " , " << qos.getQosId() << "> at " << port->getFullPath()<<endl;

    //Insert Flow into neighbour state
    neiState.push_back(new PDUFGNeighbor(addr, qos.getQosId(), port));

    // Inform child policy of changes
    insertedFlow(addr, qos, port);
}

void IntPDUFG::removeFlowInfo(RMTPort * port)
{
    for(EIter it = neiState.begin(); it != neiState.end(); ++it )
    {
        PDUFGNeighbor * e = (*it);
        if(port == e->getPort()) {
            Address addr = e->getDestAddr();

            // Remove flow from neighbour state
            neiState.erase(it);

            // Inform child policy of changes
            removedFlow(addr, port);
            return;
        }
    }
}