/*
 *   ORXONOX - the hottest 3D action shooter ever to exist
 *                    > www.orxonox.net <
 *
 *
 *   License notice:
 *
 *   This program is free software; you can redistribute it and/or
 *   modify it under the terms of the GNU General Public License
 *   as published by the Free Software Foundation; either version 2
 *   of the License, or (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 *
 *   Author:
 *      Oliver Scheuss <scheusso [at] ee.ethz.ch>, (C) 2008
 *   Co-authors:
 *      ...
 *
 */

#include "FunctionCallManager.h"
#include "packet/FunctionCalls.h"
#include "core/GameMode.h"
#include "GamestateHandler.h"
#include "Host.h"
#include "util/OrxAssert.h"

namespace orxonox {

std::map<uint32_t, packet::FunctionCalls*> FunctionCallManager::sPeerMap_;
std::vector<std::pair<FunctionCall, std::pair<uint32_t, uint32_t>>> FunctionCallManager::sIncomingFunctionCallBuffer_;


void FunctionCallManager::addCall(uint32_t functionID, uint32_t objectID, uint32_t peerID, const MultiType& mt1, const MultiType& mt2, const MultiType& mt3, const MultiType& mt4, const MultiType& mt5)
{
  // If the peerID doesn't exist yet in the map...
  if(sPeerMap_.find(peerID) == sPeerMap_.end())
  {
    // ... add a new FunctionCalls packet for the peer
    FunctionCallManager::sPeerMap_[peerID] = new packet::FunctionCalls;
    FunctionCallManager::sPeerMap_[peerID]->setPeerID(peerID);
  }

  // Add a new function call to the peer
  FunctionCallManager::sPeerMap_[peerID]->addCall(functionID, objectID, mt1, mt2, mt3, mt4, mt5);
}

/**
 * Send all function calls in sPeerMap_ to a given host, then clear sPeerMap_
 * @param host The host to send the function calls to
 */
void FunctionCallManager::sendCalls(orxonox::Host* host)
{
  for (const auto& mapEntry : FunctionCallManager::sPeerMap_ )
  {
    assert(!FunctionCallManager::sPeerMap_.empty());
    mapEntry.second->send(host);
  }
  FunctionCallManager::sPeerMap_.clear();
}

/**
 * Place an incoming function call in the queue for processing.
 */
void FunctionCallManager::bufferIncomingFunctionCall(const orxonox::FunctionCall& fctCall, uint32_t minGamestateID, uint32_t peerID)
{
  FunctionCallManager::sIncomingFunctionCallBuffer_.emplace_back(fctCall, std::make_pair(minGamestateID, peerID));
}

/**
 * Process queue of incoming function calls.
 */
void FunctionCallManager::processBufferedFunctionCalls()
{
  std::vector<std::pair<FunctionCall, std::pair<uint32_t, uint32_t>>>::iterator it = FunctionCallManager::sIncomingFunctionCallBuffer_.begin();
  while( it != FunctionCallManager::sIncomingFunctionCallBuffer_.end() )
  {
    OrxAssert( Host::getActiveInstance(), "No Host class existing" );
    if( it->second.first <= Host::getActiveInstance()->getLastReceivedGamestateID(it->second.second) && it->first.execute() )
      FunctionCallManager::sIncomingFunctionCallBuffer_.erase(it++);
    else
    {
      ++it;
    }
  }
}


} //namespace orxonox