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// P. Arce, June-2014 Conversion neutron_hp to particle_hp
//
#ifndef G4ParticleHPLegendreTable_h
#define G4ParticleHPLegendreTable_h 1

#include "G4InterpolationManager.hh"
#include "G4ios.hh"
#include "globals.hh"

#include <CLHEP/Units/SystemOfUnits.h>

#include <fstream>

class G4ParticleHPLegendreTable
{
  public:
    G4ParticleHPLegendreTable()
    {
      nCoeff = 0;
      theCoeff = nullptr;
      theRep = 0;
      theEnergy = 0.0;
      theTemp = 0.0;
    }
    ~G4ParticleHPLegendreTable() { delete[] theCoeff; }

    void operator=(const G4ParticleHPLegendreTable& aSet)
    {
      if (&aSet != this) {
        theRep = aSet.theRep;
        theEnergy = aSet.theEnergy;
        theTemp = aSet.theTemp;
        theManager = aSet.theManager;
        nCoeff = aSet.nCoeff;
        delete[] theCoeff;
        theCoeff = new G4double[nCoeff];
        for (G4int i = 0; i < nCoeff; i++) {
          theCoeff[i] = aSet.theCoeff[i];
        }
      }
    }

    inline void Init(std::istream& aDataFile)
    {
      G4double eNeu, coeff;
      G4int nPoly;
      aDataFile >> eNeu >> nPoly;
      eNeu *= CLHEP::eV;
      Init(eNeu, nPoly);
      for (G4int l = 0; l < nPoly; l++) {
        aDataFile >> coeff;
        SetCoeff(l + 1, coeff);
      }
    }

    inline void Init(G4double e, G4int n)
    {
      nCoeff = n + 1;
      theCoeff = new G4double[nCoeff];
      for (G4int i = 0; i < nCoeff; i++)
        theCoeff[i] = 0;
      theCoeff[0] = 1.;
      theEnergy = e;
      //    G4cout << "G4ParticleHPLegendreTable::Init called "<<e<<" "<<n<<G4endl;
    }
    inline void SetEnergy(G4double energy) { theEnergy = energy; }
    inline void SetTemperature(G4double temp) { theTemp = temp; }
    inline void SetCoeff(G4int l, G4double coeff) { theCoeff[l] = coeff; }
    inline void SetRepresentation(G4int aRep) { theRep = aRep; }

    inline G4double GetCoeff(G4int l) { return theCoeff[l]; }
    inline G4double GetEnergy() { return theEnergy; }
    inline G4double GetTemperature() { return theTemp; }
    inline G4int GetNumberOfPoly() { return nCoeff; }
    inline G4int GetRepresentation() { return theRep; }
    inline const G4InterpolationManager& GetManager() { return theManager; }

  private:
    G4int theRep;
    G4double theEnergy;
    G4double theTemp;
    G4int nCoeff;
    G4InterpolationManager theManager;  // knows the interpolation between stores
    G4double* theCoeff;
};

#endif