////////////////////////////////////////////////////////////////////////
/// \class RAT::Classifiers::ITR
///
/// \brief  Calculates the ITR for an event
///
/// \author name Eric Marzec <marzece@sas.upenn.edu>
///
/// REVISION HISTORY:\n
///     07/05/2013 : Eric Marzec - New file /n
///     05/22/2017 : J Caravaca - Add ability to use selectors /n
///
/// \details Gives the ITR for an event, that is, the ratio of PMT hit
/// 	    time residuals that fall within the in-time window to those
///	    that fall without.
///
////////////////////////////////////////////////////////////////////////

#ifndef __RAT_Classifiers_ITR_
#define __RAT_Classifiers_ITR_

#include <RAT/SeededClassifier.hh>
#include <RAT/SelectorClassifier.hh>
#include <RAT/DU/LightPathCalculator.hh>
#include <RAT/DS/FitResult.hh>

namespace RAT
{
  namespace DS
  {
    class FitResult;
  }

  namespace Classifiers
  {

    class ITR : public SeededClassifier, public SelectorClassifier
    {
    public:
      virtual std::string GetName() const  { return ITR::Name(); }

      static std::string Name() { return std::string( "ITR" ); }

      void Initialise( const std::string& );

      void BeginOfRun(DS::Run& run);

      void EndOfRun(DS::Run&) { }

      virtual DS::ClassifierResult GetClassification();
      /// Set the seed to default
      void DefaultSeed();
      /// Set the seed from seed
      void SetSeed( const DS::FitResult& seed );

    private:
      std::string fIndex; ///< Optional database index
      TVector3 fEventPos;
      double fEventTime;
      double fUpperTimeLimit;
      double fLowerTimeLimit;
      DU::LightPathCalculator fLightPath; ///< Light path calculator for a given run
      DS::FitVertex fSeedVertex;

    };

  } //::Classifier

} //::RAT

#endif