//
// \class RAT::Classifiers::TimeCentroid
//
// \brief Classifier to identify topological similarity of PMT hits, which can be used as a metric for spatial coincidence
//
// \author Jia-Shian Wang <jia-shian.wang@physics.ox.ac.uk>
//
// REVISION HISTORY:\n
//   29 Jul 2020: J Wang - basic structure
//
// Details can be foudn at DocDB doc-6568
//

#ifndef __RAT_Classifiers_TimeCentroid__
#define __RAT_Classifiers_TimeCentroid__

#include <string>

#include <RAT/DS/ClassifierResult.hh>
#include <RAT/Classifier.hh>
#include <RAT/SelectorClassifier.hh>

namespace RAT {

  namespace Classifiers {

    class TimeCentroid : public SelectorClassifier {

    public:

      virtual std::string GetName() const { return TimeCentroid::Name(); }

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

      void Initialise(const std::string& param);

      void BeginOfRun(DS::Run& run);

      void EndOfRun(DS::Run&) {}

      virtual DS::ClassifierResult GetClassification();

    private:

      //number of PMTs to use
      double fN_pmt;

      //scale constant
      double fC;

      //lower end of time window
      double ftime_low;

      //upper end of time window
      double ftime_up;

      //Nhit limit of event
      double fNhit_lim;

      //db table index
      std::string fIndex;
    };

  } //::Classifier

} //::RAT

#endif