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#ifndef G4IonICRU73Data_h
#define G4IonICRU73Data_h 1

//---------------------------------------------------------------------------
//
// ClassName:   G4IonICRU73Data
//
// Description: Data on stopping power
//
// Author:      Vladimir Ivanchenko
//
// Creation date: 23.10.2021
//
// Class Description:
//
// Container for parameterised data on ion stopping power
//

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#include <vector>
#include <iostream>
#include "globals.hh"

class G4PhysicsLogVector;
class G4PhysicsFreeVector;
class G4Material;

class G4IonICRU73Data 
{ 
public: 

  explicit G4IonICRU73Data();

  ~G4IonICRU73Data();

  // should be called before each run
  void Initialise();

  // Z - atomic number of the projectile
  // e - energy per nucleon, loge = log(e)
  // if data for a given combination Z/material exist the DEDX > 0. 
  G4double GetDEDX(const G4Material*, const G4int Z,
                   const G4double e, const G4double loge) const;

  // hide assignment operator
  G4IonICRU73Data & operator = (const  G4IonICRU73Data &right) = delete;
  G4IonICRU73Data(const  G4IonICRU73Data&) = delete;

private:

  void ReadMaterialData(const G4Material* mat, const G4double fact, 
                        const G4bool type);

  void ReadElementData(const G4Material* mat, G4bool type);

  G4PhysicsLogVector* FindOrBuildElementData(const G4int Z, 
                                             const G4int Z1, 
                                             G4bool useICRU90);

  G4PhysicsLogVector* RetrieveVector(std::ostringstream& in,
                                     G4bool warn);

  G4double fEmin;
  G4double fEmax;

  std::vector<G4int> fMatIndex;
  // projectile (3<= Z <= 80), target element (1 <= Z <= 92)
  const G4int ZPROJMAX = 80;
  const G4int ZTARGMAX = 92;
  std::vector<G4PhysicsLogVector*>* fMatData[81] = {nullptr};
  G4PhysicsLogVector* fElmData[81][93] = {{nullptr}};
  G4PhysicsFreeVector* fVector = nullptr;

  G4int fNbins = 0;
  G4int fNbinsPerDecade = 10;
  G4int fVerbose = 0;
  G4bool fSpline = false;
  G4String fDataDirectory = "";
};

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#endif