////////////////////////////////////////////////////////////////////////
/// \class RAT::Classifiers::BiPoCumulTimeResid
///
/// \brief:  Classifies post-reconstruction as In-Window BiPo-Coincidence
///
/// \author name:  Krish Majumdar <Krishanu.Majumdar@physics.ox.ac.uk>
///
/// REVISION HISTORY:
///     26/10/2013 : Krish Majumdar - new file
///     29/01/2014 : Krish Majumdar - added parameters to plot the distribution
///     13/02/2014 : Krish Majumdar - changes as requested for Pull Request
///     24/04/2015 : Matt Mottram - updated initialisation to dynamically load material
///     30/04/2015 : Matt Mottram - added failover to default material PDF
///     09/02/2015 : Matt Mottram - update default material
///     01/09/2020 : Logan Lebanowski - Properly account for partial fill
///
/// \details  Uses the Normalised Cumulative Time Residuals distribution
///           to classify events as either pileup BiPo coincidence events
///           or not.  The classifier returns the gamma value resulting
///           from a KS test between the 130Te and events distributions.
///
////////////////////////////////////////////////////////////////////////

#ifndef __RAT_Classifiers_BiPoCumulTimeResid_
#define __RAT_Classifiers_BiPoCumulTimeResid_

#include <string>
#include <RAT/SeededClassifier.hh>
#include <RAT/Classifier.hh>
#include <RAT/DU/LightPathCalculator.hh>

namespace RAT
{
  namespace DS
  {
    class FitResult;
  }

  namespace Classifiers
  {
    class BiPoCumulTimeResid : public SeededClassifier
    {

    public:
      virtual std::string GetName() const { return BiPoCumulTimeResid::Name(); }
      static std::string Name() { return std::string("BiPoCumulTimeResid"); }
      void Initialise(const std::string& param);
      void BeginOfRun(DS::Run& run);
      void EndOfRun(DS::Run&) { }
      void DefaultSeed();
      void SetSeed(const DS::FitResult& seed);
      virtual DS::ClassifierResult GetClassification();

    private:
      std::string fIndex; ///< Required index
      double fMinTimeResidual; ///< The minimum time residual to be considered in the Cumulative Time Residuals distribution
      double fMaxTimeResidual; ///< The maximum time residual to be considered in the Cumulative Time Residuals distribution
      std::vector<double> fCumulativeFractions; ///< Vector of cumulative time residual probabilities for SIGNAL events
      TVector3 fEventPosition; ///< The fitted event position, used for calculating the event's time residuals
      double fEventTime; ///< The fitted event time, used for calculating the event's time residuals
      DU::LightPathCalculator fLightPath; ///< Light path calculator for a given run
      bool fPartialFlag;
    };
  } //::Classifier
} //::RAT

#endif