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/*
 * RequestManager.cpp
 *
 * Copyright (C) 2008 Matthias Schiffer <matthias@gamezock.de>
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 */

#include "RequestManager.h"
#include "Request/Request.h"

#include <iostream>

namespace Mad {
namespace Common {

void RequestManager::receiveHandler(Net::Connection *connection, const Net::Packet &packet) {
  std::map<Net::Connection*,RequestMap*>::iterator it = requestMaps.find(connection);

  if(it == requestMaps.end()) {
    // TODO: Error
    std::cerr << "Received a packet from an unregistered connection." << std::endl;

    return;
  }

  RequestMap *requestMap = it->second;
  RequestHandler *request = requestMap->findRequest(packet.getRequestId());

  if(request) {
    request->handlePacket(connection, packet);

    if(request->isFinished())
      requestMap->deleteRequest(packet.getRequestId());

    return;
  }

  std::map<Net::Packet::Type,RequestHandlerFactory*>::iterator factoryIt = requestHandlerFactories.find(packet.getType());
  if(factoryIt != requestHandlerFactories.end()) {
    request = factoryIt->second->createRequestHandler();
    request->handlePacket(connection, packet);

    if(!request->isFinished())
      requestMap->addRequest(packet.getRequestId(), request);
    else
      delete request;

    return;
  }


  switch(packet.getType()) {
    case Net::Packet::TYPE_DISCONNECT:
      connection->send(Net::Packet(Net::Packet::TYPE_OK, packet.getRequestId()));
      connection->disconnect();
      break;
    case Net::Packet::TYPE_IDENTIFY:
      std::cout << "Received identify request from '" << std::string((char*)packet.getData(), packet.getLength()) << "'." << std::endl;

      connection->send(Net::Packet(Net::Packet::TYPE_IDENTIFY, packet.getRequestId(), packet.getData(), packet.getLength()));
      break;
    default:
      std::cerr << "Received an unexpected packet." << std::endl;
  }
}

bool RequestManager::sendRequest(Net::Connection *connection, Request::Request *request) {
  std::map<Net::Connection*,RequestMap*>::iterator it = requestMaps.find(connection);

  if(it == requestMaps.end())
    return false;

  RequestMap *requestMap = it->second;

  uint16_t id;
  do {
    id = getRequestId();
  } while(requestMap->findRequest(id));

  if(!request->sendRequest(connection, id))
    return false;

  requestMap->addRequest(id, request);

  return true;
}

}
}