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/// \file GunPrimaryGeneratorAction.hh
/// \brief Definition of the Common::GunPrimaryGeneratorAction class

#ifndef GunPrimaryGeneratorAction_h
#define GunPrimaryGeneratorAction_h 1

#include "CLHEP/Units/SystemOfUnits.h"

#include "G4ThreeVector.hh"
#include "G4VUserPrimaryGeneratorAction.hh"
#include "globals.hh"

class G4ParticleGun;
class G4Event;

namespace Common
{

/// The primary generator class with particle gun
///
/// \author I. Hrivnacova; IPN Orsay

class GunPrimaryGeneratorAction : public G4VUserPrimaryGeneratorAction
{
  public:
    GunPrimaryGeneratorAction(const G4String& particleName = "geantino",
                              G4double energy = 1. * CLHEP::MeV,
                              G4ThreeVector position = G4ThreeVector(0, 0, 0),
                              G4ThreeVector momentumDirection = G4ThreeVector(0, 0, 1));
    ~GunPrimaryGeneratorAction() override;

    // methods
    void GeneratePrimaries(G4Event*) override;

  private:
    // data members
    G4ParticleGun* fParticleGun = nullptr;
};

}  // namespace Common

#endif