// M Hentz, 2016

#ifndef PrimaryGeneratorAction_h
#define PrimaryGeneratorAction_h 1

#include "G4VUserPrimaryGeneratorAction.hh"
#include "G4GeneralParticleSource.hh"
#include "G4ParticleGun.hh"
#include "G4VPrimaryGenerator.hh"
#include "globals.hh"

class G4Event;
class DetectorConstruction;
class PrimaryGeneratorMessenger;
class FileReader;

class PrimaryGeneratorAction : public G4VUserPrimaryGeneratorAction
{
public:
  PrimaryGeneratorAction();
  ~PrimaryGeneratorAction();

public:
  virtual void GeneratePrimaries( G4Event* );

  void   ResetEbeamCumul() { fEbeamCumul = 0.; }
  G4double GetEbeamCumul() { return fEbeamCumul; }

  G4GeneralParticleSource*    GetParticleGunGPS() { return fParticleGunGPS; }
  G4ParticleGun*              GetParticleGun() { return fParticleGun; }

  void SetInputFileName( G4String filename ) { fInputFileName = filename; }
  void SetPrimaryPosition( G4double primaryPosition ) { fPrimaryPosition = primaryPosition; }

private:
  PrimaryGeneratorMessenger* fPrimaryGenMessenger;

  G4GeneralParticleSource*    fParticleGunGPS;
  G4ParticleGun*              fParticleGun;
  G4double                    fPrimaryEnergy;
  G4double                    fEbeamCumul;
  G4double                    fPrimaryPosition;

  G4bool fFirst;
//  G4bool fGenerateFromInput;

  G4String           fInputFileName;
  static FileReader* fReader;
};

#endif