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//
// ------------------------------------------------------------
//      GEANT 4 class header file
//      CERN Geneva Switzerland
//
//
//      ------------ GammaRayTelPrimaryGeneratorAction  ------
//           by G.Santin, F.Longo & R.Giannitrapani (30 nov 2000)
//
// ************************************************************

#ifndef GammaRayTelPrimaryGeneratorAction_h
#define GammaRayTelPrimaryGeneratorAction_h 1

#include "G4SystemOfUnits.hh"
#include "G4VUserPrimaryGeneratorAction.hh"
#include "globals.hh"

class G4ParticleGun;
class G4Event;
class GammaRayTelDetectorConstruction;
class GammaRayTelPrimaryGeneratorMessenger;
class G4GeneralParticleSource;

class GammaRayTelPrimaryGeneratorAction: public G4VUserPrimaryGeneratorAction {
public:
	explicit GammaRayTelPrimaryGeneratorAction();

	~GammaRayTelPrimaryGeneratorAction() override;

	void GeneratePrimaries(G4Event *event) override;

	void SetRndmFlag(G4String value) {
		rndmFlag = value;
	}

	void SetSourceType(G4int value) {
		sourceType = value;
	}

	void SetSpectrumType(G4int value) {
		spectrumType = value;
	}

	void SetVertexRadius(G4double value) {
		vertexRadius = value;
	}

	void SetSourceGen(G4bool value) {
		sourceGun = value;
	}

private:
	G4ParticleGun *particleGun;

	G4GeneralParticleSource *particleSource;

	const GammaRayTelDetectorConstruction *detector;

	GammaRayTelPrimaryGeneratorMessenger *gunMessenger;

	G4String rndmFlag{"off"}; // flag for a random impact point

	G4int sourceType{0};

	G4double vertexRadius{15. * cm};

	G4int spectrumType{0};

	G4bool sourceGun{false}; // false for GeneralParticleSource
};
#endif