#ifndef __ANTARESDAQ_PHYSICSEVENT__
#define __ANTARESDAQ_PHYSICSEVENT__

#include <ostream>
#include <iomanip>
#include <vector>
#include <limits>

#include <TROOT.h>
#include <TObject.h>

#include "antares-dataformat/DataTypes.hh"
#include "antares-dataformat/Ars.hh"
#include "antares-dataformat/EventPreamble.hh"


/**
 * Template hit.
 */
template<class T>
class ARS_Hit : public T {
public:
  typedef T data_type;

  /** LCM identifier */
  unsigned short lcm_id;
  /** ARS identifier */
  unsigned char  ars_id;

  /**
   * Default constructor.
   */
  ARS_Hit() :
    T(),
    lcm_id(0),
    ars_id(0)
  {}

  /**
   * print ASCII
   * \param out     output stream
   * \param object  hit
   * \return        output stream
   */
  friend std::ostream& operator<<(std::ostream& out, const ARS_Hit& object)
  {
    using namespace std;
    
    out << setw(5) << (int) object. lcm_id << ' ' 
	<< setw(2) << (int) object. ars_id << ' ';
    out << static_cast<const T&>(object);

    return out;
  }

  ClassDef(ARS_Hit, 2);
};

ClassDefT2(ARS_Hit,T);
ClassImpT(ARS_Hit,T);


/**
 * SPE hit
 */
class SPE_Hit : public ARS_Hit<SPE_Item> {
public:
  /** 
   * Default constructor.
   */
  SPE_Hit() :
    ARS_Hit<SPE_Item>() 
  {}

  ClassDef(SPE_Hit, 2);
};


/**
 * AWF hit
 */
class AWF_Hit : public ARS_Hit<AWF_Item> {
public:
  /** 
   * Default constructor.
   */
  AWF_Hit() :
    ARS_Hit<AWF_Item>() 
  {}

  ClassDef(AWF_Hit, 2);
};


/**
 * DWF hit
 */
class DWF_Hit : public ARS_Hit<DWF_Item> {
public:
  /** 
   * Default constructor.
   */
  DWF_Hit() :
    ARS_Hit<DWF_Item>() 
  {}

  ClassDef(DWF_Hit, 2);
};


/**
 * Triggered SPE hit
 */
class TriggeredSPE_Hit : public SPE_Hit {
public:
  /** 
   * Default constructor.
   */
  TriggeredSPE_Hit() :
    SPE_Hit() 
  {}

  ClassDef(TriggeredSPE_Hit, 2);
};


/**
 * Physics event
 */
class PhysicsEvent :
  public EventPreamble
{
protected:
  unsigned int EventType_;
  unsigned int TriggerCounter_;
  double       MinT_;
  double       MaxT_;
  float        MaxA_;
  float        TotA_;
    
  std::vector<TriggeredSPE_Hit> TriggeredSPEHits_;
  std::vector<SPE_Hit>          SPEHits_;
  std::vector<AWF_Hit>          AWFHits_;
  std::vector<DWF_Hit>          DWFHits_;

public:
  /**
   * Default constructor.
   */
  PhysicsEvent() :
    EventPreamble(),
    EventType_(0),
    TriggerCounter_(0),
    MinT_(+std::numeric_limits<double>::max()),
    MaxT_(-std::numeric_limits<double>::max()),
    MaxA_(0),
    TotA_(0)
  {}

  /**
   * Virtual destructor.
   */
  virtual ~PhysicsEvent()
  {}
  
  /** Identifier of processor that created this event */
  const unsigned short FrameTarget()    const { return frameTarget; }
  /** most significant word of frametime */
  const unsigned int   FrameTime1()     const { return frameTime1; }
  /** least significant word of frametime */
  const unsigned int   FrameTime2()     const { return frameTime2; }
  /** frame index */
  const unsigned int   FrameIndex()     const { return frameIndex; }
  /** Run number */
  const unsigned int   RunNumber()      const { return runNumber; }

  /** Type of PhysicsEvent */
  const unsigned int   EventType()      const { return EventType_; }
  /** Trigger nr. since start of run */
  const unsigned int   TriggerCounter() const { return TriggerCounter_; }
  /** time of first hit in event */
  const double         MinT()           const { return MinT_; }
  /** time of last hit in event */
  const double         MaxT()           const { return MaxT_; }
  /** amplitude of largest hit in event */
  const float          MaxA()           const { return MaxA_; }
  /** sum of all amplitudes */
  const float          TotA()           const { return TotA_; }

  /** Triggered hits */
  const std::vector<TriggeredSPE_Hit>& TriggeredSPEHits() const { return TriggeredSPEHits_; }
  /** SPE hits */
  const std::vector<SPE_Hit>& SPE_Hits()                  const { return SPEHits_; }
  /** Waveform hits */
  const std::vector<AWF_Hit>& AWF_Hits()                  const { return AWFHits_; }
  /** Dynode hits */
  const std::vector<DWF_Hit>& DWF_Hits()                  const { return DWFHits_; }

  /**
   * Template vector<T>::iterator
   */
  template<class T> class const_iterator : public std::vector<T>::const_iterator {
  public:
    const_iterator() :
      std::vector<T>::const_iterator()
    {}
    
    const_iterator(const typename std::vector<T>::const_iterator& i) :
      std::vector<T>::const_iterator(i)
    {}

    const_iterator& operator=(const typename std::vector<T>::const_iterator& i)
    {
      (typename std::vector<T>::const_iterator&) *this = i;
      return *this;
    }
  };
  
  /** template size method for nested vector */
  template<class T> size_t size() const;

  /** template begin const_iterator for nested vector */
  template<class T> typename std::vector<T>::const_iterator begin() const;
  
  /** template end const_iterator for nested vector */
  template<class T> typename std::vector<T>::const_iterator end()   const;

  /**
   * Print ASCII.
   *
   * \param out     output stream
   * \param object  physics event
   * \return        output stream
   */
  friend std::ostream& operator<<(std::ostream& out, const PhysicsEvent& object)
  {
    using namespace std;
    
    out << " +-------------------------------------+ "               << endl;
    out << " |  EventType_      " << object.EventType_               << endl;
    out << " |  RunNumber_      " << object.RunNumber()              << endl;
    out << " |  TriggerCounter_ " << object.TriggerCounter_          << endl;
    out << " |  FrameTarget_    " << object.FrameTarget()            << endl;
    out << " |  FrameTime1_     " << object.FrameTime1()             << endl;
    out << " |  FrameTime2_     " << object.FrameTime2()             << endl;
    out << " |  FrameIndex_     " << object.FrameIndex()             << endl;
    out << setprecision(11) << setw(14) 
	<< " |  MinT_           " << object.MinT_                    << endl;
    out << setprecision(11) << setw(14) 
	<< " |  MaxT_           " << object.MaxT_                    << endl;
    out << setprecision( 6) << setw(10) 
	<< " |  MaxA_           " << object.MaxA_                    << endl;
    out << setprecision( 6) << setw(10) 
	<< " |  TotA_           " << object.TotA_                    << endl;
    out << " +-------------------------------------+ "               << endl;
    out << " | Triggered hits   " << object.TriggeredSPEHits_.size() << endl;
    out << " | SPE hits         " << object.SPEHits_.size()          << endl;
    out << " | AWF hits         " << object.AWFHits_.size()          << endl;
    out << " | DWF hits         " << object.DWFHits_.size()          << endl;
    out << " +-------------------------------------+ "               << endl;
    out << endl;

    return out;
  }

  ClassDef(PhysicsEvent, 2);
};


/** specialisation for TriggeredSPE_Hit size */
template<> inline size_t
PhysicsEvent::size<TriggeredSPE_Hit>() const
{
  return TriggeredSPEHits_.size();
}

/** specialisation for SPE_Hit size */
template<> inline size_t
PhysicsEvent::size<SPE_Hit>() const
{
  return SPEHits_.size();
}

/** specialisation for AWF_Hit size */
template<> inline size_t
PhysicsEvent::size<AWF_Hit>() const
{
  return AWFHits_.size();
}

/** specialisation for DWF_Hit size */
template<> inline size_t
PhysicsEvent::size<DWF_Hit>() const
{
  return DWFHits_.size();
}

/** specialisation for TriggeredSPE_Hit iterator begin */
template<> inline std::vector<TriggeredSPE_Hit>::const_iterator
PhysicsEvent::begin<TriggeredSPE_Hit>() const
{
  return TriggeredSPEHits_.begin();
}

/** specialisation for TriggeredSPE_Hit iterator end */
template<> inline std::vector<TriggeredSPE_Hit>::const_iterator
PhysicsEvent::end<TriggeredSPE_Hit>() const
{
  return TriggeredSPEHits_.end();
}

/** specialisation for SPE_Hit iterator begin */
template<> inline std::vector<SPE_Hit>::const_iterator
PhysicsEvent::begin<SPE_Hit>() const
{
  return SPEHits_.begin();
}

/** specialisation for SPE_Hit iterator end */
template<> inline std::vector<SPE_Hit>::const_iterator
PhysicsEvent::end<SPE_Hit>() const
{
  return SPEHits_.end();
}

/** specialisation for AWF_Hit iterator begin */
template<> inline std::vector<AWF_Hit>::const_iterator
PhysicsEvent::begin<AWF_Hit>() const
{
  return AWFHits_.begin();
}

/** specialisation for AWF_Hit iterator end */
template<> inline std::vector<AWF_Hit>::const_iterator
PhysicsEvent::end<AWF_Hit>() const
{
  return AWFHits_.end();
}

/** specialisation for DWF_Hit iterator begin */
template<> inline std::vector<DWF_Hit>::const_iterator
PhysicsEvent::begin<DWF_Hit>() const
{
  return DWFHits_.begin();
}

/** specialisation for DWF_Hit iterator end */
template<> inline std::vector<DWF_Hit>::const_iterator
PhysicsEvent::end<DWF_Hit>() const
{
  return DWFHits_.end();
}


/**
 * equal operator for SPE hit.
 *
 * \param  first       SPE hit
 * \param  second      SPE hit
 * \return             true if first equals second; else false
 */
inline bool operator==(const SPE_Hit& first, const SPE_Hit& second)
{
  return (first.lcm_id    == second.lcm_id    &&
	  first.ars_id    == second.ars_id    &&
	  first.timestamp == second.timestamp &&
	  first.tvc       == second.tvc       &&
	  first.avc       == second.avc);
}

/**
 * not-equal operator for SPE hit.
 *
 * \param  first       SPE hit
 * \param  second      SPE hit
 * \return             true if first not equals second; else false
 */
inline bool operator!=(const SPE_Hit& first, const SPE_Hit& second)
{
  return (first.lcm_id    != second.lcm_id    ||
	  first.ars_id    != second.ars_id    ||
	  first.timestamp != second.timestamp ||
	  first.tvc       != second.tvc       ||
	  first.avc       != second.avc);
}


/**
 * equal operator for physics event.
 *
 * \param  first       physics event
 * \param  second      physics event
 * \return             true if first equals second; else false
 */
inline bool operator==(const PhysicsEvent& first, const PhysicsEvent& second)
{
  return (first.MinT() < second.MaxT() &&
	  first.MaxT() > second.MinT());
}

/**
 * not-equal operator for physics event.
 *
 * \param  first       physics event
 * \param  second      physics event
 * \return             true if first not equals second; else false
 */
inline bool operator!=(const PhysicsEvent& first, const PhysicsEvent& second)
{
  return (first.MinT() > second.MaxT() ||
	  first.MaxT() < second.MinT());
}

/**
 * Comparator for physics event; earliest event first.
 *
 * \param  first       physics event
 * \param  second      physics event
 * \return             true if first earlier than second; else false
 */
inline bool operator<(const PhysicsEvent& first, const PhysicsEvent& second)
{
  return first.MinT() < second.MinT();
}

/**
 * Specialisation of STL distance.
 *
 * \param  first       first position
 * \param  second      last  position
 * \return             distance
 */
template<class T>
inline typename std::vector<T>::difference_type distance(typename std::vector<T>::const_iterator  first,
							 typename PhysicsEvent::const_iterator<T> second)
{
  return std::distance(first, (typename std::vector<T>::const_iterator&) second);
}
 
#endif