/*!
 * @file connection_monitor.h
    \brief provides information about the quality of a connection.
 */

#ifndef _CONNECTION_MONITOR_H
#define _CONNECTION_MONITOR_H

#include "base_object.h"
#include "netdefs.h"

#include <map>

#define N_PACKETS_FOR_PING 20
#define MSECS_TO_CALC_BWIDTH 1000
#define SECS_TO_TIMEOUT 10

class ConnectionMonitor : virtual public BaseObject
{
  public:
    ConnectionMonitor( int userId );
    virtual ~ConnectionMonitor();

    void processUnzippedOutgoingPacket( byte * data, int length, int stateId );
    void processUnzippedIncomingPacket( byte * data, int length, int stateId, int ackedState );

    
    void calculatePing();
    
    //TODO
    bool hasTimedOut(){ return false; return ( lastPacketTick + SECS_TO_TIMEOUT*1000 < SDL_GetTicks() ) && nIncomingPackets > 0; }
    
    int getMaxPacketSize();
    
  private:
    float calculateBandWidth( std::map<int,int> packetHistory, int tick );
    
    int userId;       //!< user's id 

    std::map<int,int>   sentStateTicks;
    
    std::map<int,int>   incomingUnzippedPacketHistory;
    std::map<int,int>   outgoingUnzippedPacketHistory;
    
    std::map<int,int>   incomingZippedPacketHistory;
    std::map<int,int>   outgoingZippedPacketHistory;
    
    std::list<int>      ackDelay;
    int                 ping;

    float               incomingUnzippedBandWidth;
    float               outgoingUnzippedBandWidth;
    
    float               incomingZippedBandWidth;
    float               outgoingZippedBandWidth;
    
    int                 nIncomingPackets;
    int                 nOutgoingPackets;
    
    int                 lastPacketTick;
  };

#endif