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//
// Based on the work described in
// Rad Res 163, 98-111 (2005)
// D. Emfietzoglou, H. Nikjoo
// 
// Authors of the class (2014):
// I. Kyriakou (kyriak@cc.uoi.gr)
// D. Emfietzoglou (demfietz@cc.uoi.gr)
// S. Incerti (incerti@cenbg.in2p3.fr)
//

#ifndef G4DNAEmfietzoglouIonisationModel_h
#define G4DNAEmfietzoglouIonisationModel_h 1

#include "G4VEmModel.hh"
#include "G4ParticleChangeForGamma.hh"
#include "G4ProductionCutsTable.hh"
#include "G4VAtomDeexcitation.hh"
#include "G4NistManager.hh"
#include "G4Electron.hh"
#include "G4Proton.hh"

#include "G4DNACrossSectionDataSet.hh"
#include "G4DNAGenericIonsManager.hh"
#include "G4LogLogInterpolation.hh"
#include "G4DNAEmfietzoglouWaterIonisationStructure.hh"

class G4DNAEmfietzoglouIonisationModel : public G4VEmModel
{

public:

  G4DNAEmfietzoglouIonisationModel(const G4ParticleDefinition* p = nullptr,
                                   const G4String& nam =
                                       "DNAEmfietzoglouIonisationModel");

  ~G4DNAEmfietzoglouIonisationModel() override;

  G4DNAEmfietzoglouIonisationModel & operator=(const G4DNAEmfietzoglouIonisationModel &right) = delete;
  G4DNAEmfietzoglouIonisationModel(const G4DNAEmfietzoglouIonisationModel&) = delete;

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

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

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

  G4double DifferentialCrossSection(G4ParticleDefinition * aParticleDefinition,
                                  G4double k,
                                  G4double energyTransfer,
                                  G4int shell);

  inline void SelectFasterComputation(G4bool input);

  inline void SelectStationary(G4bool input); 

protected:

  G4ParticleChangeForGamma* fParticleChangeForGamma;

private:

  G4bool fasterCode;

  G4bool statCode;

  // Water density table
  const std::vector<G4double>* fpMolWaterDensity;

  // Deexcitation manager to produce fluo photons and e-
  G4VAtomDeexcitation* fAtomDeexcitation;

  std::map<G4String, G4double, std::less<G4String> > lowEnergyLimit;
  std::map<G4String, G4double, std::less<G4String> > highEnergyLimit;

  G4bool isInitialised{false};
  G4int verboseLevel;

  // Cross section

  using MapFile = std::map<G4String, G4String, std::less<G4String>>;
  MapFile tableFile; // useful ?

  using MapData = std::map<G4String, G4DNACrossSectionDataSet *, std::less<G4String>>;
  MapData tableData;

  // Final state

  G4DNAEmfietzoglouWaterIonisationStructure waterStructure;

  G4double RandomizeEjectedElectronEnergy(G4ParticleDefinition * aParticleDefinition,
                                          G4double incomingParticleEnergy,
                                          G4int shell);

  G4double RandomizeEjectedElectronEnergyFromCumulatedDcs(G4ParticleDefinition * aParticleDefinition,
                                                          G4double incomingParticleEnergy,
                                                          G4int shell);

  G4double RandomTransferedEnergy(G4ParticleDefinition * aParticleDefinition,
                                  G4double incomingParticleEnergy,
                                  G4int shell);

  G4double Interpolate(G4double e1,
                       G4double e2,
                       G4double e,
                       G4double xs1,
                       G4double xs2);

  G4double QuadInterpolator(G4double e11,
                            G4double e12,
                            G4double e21,
                            G4double e22,
                            G4double x11,
                            G4double x12,
                            G4double x21,
                            G4double x22,
                            G4double t1,
                            G4double t2,
                            G4double t,
                            G4double e);

  using TriDimensionMap = std::map<G4double, std::map<G4double, G4double>>;

  TriDimensionMap eDiffCrossSectionData[6];
  TriDimensionMap eNrjTransfData[6]; // for cumulated dcs

  TriDimensionMap pDiffCrossSectionData[6];

  std::vector<G4double> eTdummyVec;

  using VecMap = std::map<G4double, std::vector<G4double>>;

  VecMap eVecm;

  VecMap eProbaShellMap[6]; // for cumulated dcs

  // Partial cross section

  G4int RandomSelect(G4double energy, const G4String& particle);

};

inline void G4DNAEmfietzoglouIonisationModel::SelectFasterComputation(G4bool input)
{
  fasterCode = input;
}

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

inline void G4DNAEmfietzoglouIonisationModel::SelectStationary (G4bool input)
{ 
    statCode = input; 
}		 

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

#endif