#ifndef FCALEventAction_h
#define FCALEventAction_h 1

#include "G4UserEventAction.hh"
#include "TTree.h"

#include "globals.hh"

class G4Event;
class FCALDetectorConstruction;
class FCALPrimaryGeneratorAction;

class TTree;

class FCALEventAction : public G4UserEventAction
{
	public:
	
		enum { kMaxCells = 2000 };
		
		FCALEventAction(FCALDetectorConstruction* detector_Con, FCALPrimaryGeneratorAction* generator_Act, TTree* tree);
	  	~FCALEventAction();

		void BeginOfEventAction(const G4Event*);	// the definiton of a pure virtual method, BeginOfEventAction
		void EndOfEventAction(const G4Event*);		// it is not, actually, required to add the keyword 'virtual'

		void countPhotons(G4double x_Pos, G4double y_Pos);	// the method to count the number of the Photons
		void countHits(G4int copy_No);				// the method to count the number of the Hits
		void addEnergy(G4double photon_Eng, G4int copy_No);	// the method to add energy
		void addEnergyDeposit(G4double energy_Dep, G4int copy_No);	// the method to add energy deposited
		void addEnergyAttenuate(G4double energy_att, G4int copy_No);
		void resetCounters();		// the method to reset

		G4int totalPhotons(G4int num)		{ return total_Photons[num]; }		// return the value currently contained in the total_Photons when the method is invoked. 
		G4int detectedPhotons(G4int num)	{ return detected_Photons[num]; }	// return the value currenly contained in the detected_Photons when the method is invoked.
		G4double totalPhotonEnergy(G4int num)	{ return energy_Detected[num]; }
		G4double totalDepositEnergy(G4int num)	{ return energy_Deposited[num]; }
		G4double totalAttenuateEnergy(G4int num) { return energy_Attenuated[num]; }
		
	private:
		FCALDetectorConstruction* detector_Construction;
		FCALPrimaryGeneratorAction* generator_Action;
		
		G4int n_Cells;
		
		G4int n_ExcitedCells;		// the number of the photocathodes detecting, at least, one optical photon. 
		G4int* total_Photons;		// declare the pointer variable to contain the total number of produced photons. 
		G4int* detected_Photons;	// declare the pointer instance to contain the total number of detected photons. 
		G4double* energy_Detected;
		G4double* energy_Deposited;
		G4double* energy_Attenuated;
		
		Int_t event_ID, n_ExCells, row_No[kMaxCells], column_No[kMaxCells];							// event ID, number of excited cells, row number, column number
		Float_t in_Energy, n_RescaledPhotons[kMaxCells], op_Energy[kMaxCells], dep_Energy[kMaxCells], att_Energy[kMaxCells];	// incident particle energy, number of optical photons, detected optical photon energy, deposited energy
		TTree* FCAL_Tree;
};

#endif /*FCALEventAction_h*/