////////////////////////////////////////////////////////////////////////
/// \class RAT::Classifiers::IBDClassiferUnseeded
///
/// \brief Classifies an event a possible neutron event from inverse beta decay
///
/// \author name Pawel Mekarski <mekarski@ualberta.ca>
///
/// REVISION HISTORY:\n
///     25/04/2016 : Pawel Mekarski - New RAT Classifier
///
/// \details Checks to see if a triggered event had another event(s) occur in the
///         past set time window O[100s of us].  Returns the number of such events
///         that occured.  A non-zero return idicated a possible IBD event.
///
////////////////////////////////////////////////////////////////////////

#ifndef __RAT_Classifiers_IBDClassifierUnseeded_
#define __RAT_Classifiers_IBDClassifierUnseeded_

#include <RAT/Classifier.hh>
#include <RAT/DS/UniversalTime.hh>

namespace RAT
{
  namespace Classifiers
  {
    class IBDClassifierUnseeded : public Classifier
    {

      public:
        virtual std::string GetName() const { return IBDClassifierUnseeded::Name(); }
        static std::string Name() { return std::string("IBDClassifierUnseeded"); }
        void Initialise(const std::string&) {}
        void BeginOfRun(DS::Run& run);
        void EndOfRun(DS::Run& run) { }
        virtual DS::ClassifierResult GetClassification();
        double UTtoNanoSeconds(RAT::DS::UniversalTime time); ///< Converts UniversalTime to nanoseconds

      private:
        RAT::DS::UniversalTime fTimeWindow; ///< For recording events that occured in this past time window specified
        RAT::DS::UniversalTime fPreviousEventTime; ///< Stored time of the last event
        std::vector<double> fEventTimes; ///< Vector containing the times to the last few events that fell within the time window

    };
  } // namespace Classifiers
} // namespace RAT

#endif