/*
 * RequestManager.h
 *
 * 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/>.
 */

#ifndef MAD_COMMON_REQUESTMANAGER_H_
#define MAD_COMMON_REQUESTMANAGER_H_

#include "Request/Request.h"
#include <Net/Connection.h>
#include <map>

namespace Mad {
namespace Common {

class RequestManager {
  private:
    class RequestMap : private std::map<unsigned short,Request::Request*> {
      private:
        // Prevent shallow copy
        RequestMap(const RequestMap &o);
        RequestMap& operator=(const RequestMap &o);

      public:
        RequestMap() {}

        ~RequestMap() {
          for(iterator it = begin(); it != end(); ++it)
            delete it->second;
        }

        bool addRequest(unsigned short id, Request::Request *info) {
          return insert(std::make_pair(id, info)).second;
        }

        Request::Request* findRequest(unsigned short id) {
          iterator it = find(id);
          if(it == end())
            return 0;

          return it->second;
        }

        bool deleteRequest(unsigned short id) {
          iterator it = find(id);
          if(it == end())
            return false;

          delete it->second;

          erase(it);
          return true;
        }
    };

    // Prevent shallow copy
    RequestManager(const RequestManager &o);
    RequestManager& operator=(const RequestManager &o);

    std::map<Net::Connection*,RequestMap*> requestMaps;
    unsigned short requestId;

    unsigned short getRequestId() {
      return requestId+=2;
    }

    void receiveHandler(Net::Connection *connection, const Net::Packet &packet);

  public:
    void registerConnection(Net::Connection *connection) {
      requestMaps.insert(std::make_pair(connection, new RequestMap()));

      connection->signalReceive().connect(sigc::mem_fun(this, &RequestManager::receiveHandler));
    }

    void unregisterConnection(Net::Connection *connection) {
      std::map<Net::Connection*,RequestMap*>::iterator it = requestMaps.find(connection);

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

      delete it->second;

      requestMaps.erase(it);
    }

    bool sendRequest(Net::Connection *connection, Request::Request *request);

    RequestManager(bool core) : requestId(core ? -2 : -1) {}

    virtual ~RequestManager() {
      for(std::map<Net::Connection*,RequestMap*>::iterator it = requestMaps.begin(); it != requestMaps.end(); ++it)
        delete it->second;
    }
};

}
}

#endif /* MAD_COMMON_REQUESTMANAGER_H_ */