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//
// Author V.Ivanchenko 15.04.2024
//
// General ion model for simulation of charge decrease.
// Concrete model of ion ionisation is selected on fly.
//

#ifndef G4DNAIonChargeDecreaseModel_h
#define G4DNAIonChargeDecreaseModel_h 1

#include "G4VEmModel.hh"
#include "G4ParticleChangeForGamma.hh"

class G4DNAIonChargeDecreaseModel : public G4VEmModel
{
public:

  G4DNAIonChargeDecreaseModel(const G4ParticleDefinition* p = nullptr, 
		              const G4String& nam = "DNAIonChargeDecrease");

  ~G4DNAIonChargeDecreaseModel() override = default;

  G4DNAIonChargeDecreaseModel & operator=
  (const  G4DNAIonChargeDecreaseModel &right) = delete;
  G4DNAIonChargeDecreaseModel(const G4DNAIonChargeDecreaseModel&) = delete;

  void Initialise(const G4ParticleDefinition*, const G4DataVector&) override;

  G4double CrossSectionPerVolume(const G4Material* material,
				 const G4ParticleDefinition* p,
				 G4double ekin, G4double,
				 G4double) override;

  void SampleSecondaries(std::vector<G4DynamicParticle*>*,
			 const G4MaterialCutsCouple*,
			 const G4DynamicParticle*,
			 G4double, G4double) override;

  void StartTracking(G4Track*) override;

protected:

  G4ParticleChangeForGamma* fParticleChangeForGamma{nullptr};

private:

  const G4DynamicParticle* fDynParticle{nullptr};
  G4VEmModel* fCurrentModel{nullptr};

  // list of concrete ion ionisation models, put extra here
  G4VEmModel* fDummy;
};

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....

#endif