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//
 // Hadronic Process: Very Low Energy Neutron X-Sections
 // original by H.P. Wellisch, TRIUMF, 14-Feb-97
//
// 070606 fix for Valgrind error by T. Koi
// 070612 fix memory leaking by T. Koi
// 070615 fix memory leaking by T. Koi
// 080625 fix memory leaking by T. Koi
//
// P. Arce, June-2014 Conversion neutron_hp to particle_hp
//
#ifndef G4ParticleHPPhotonDist_h
#define G4ParticleHPPhotonDist_h 1

#include <fstream>

#include "globals.hh"
#include "G4ios.hh"
#include "globals.hh"
#include "G4ParticleHPVector.hh"
#include "G4ParticleHPLegendreTable.hh"
#include "G4ParticleHPAngularP.hh"
#include "G4ParticleHPPartial.hh"
#include "G4ParticleHPFastLegendre.hh"
#include "G4ParticleHPInterpolator.hh"
#include "G4ReactionProductVector.hh"
#include "G4ReactionProduct.hh"
#include "G4Gamma.hh"
#include "G4InterpolationManager.hh"
#include "G4Cache.hh"

class G4ParticleHPPhotonDist
{
public:

  G4ParticleHPPhotonDist()
      : repFlag( 0 ) 
      , targetMass( 0.0 ) 
      , nDiscrete( 0 ) 
      , isoFlag( 0 )
      , tabulationType( 0 )
      , nDiscrete2( 0 ) 
      , nIso( 0 ) 
      , nPartials( 0 )
      , theInternalConversionFlag( 0 )
      , nGammaEnergies( 0 )
      , theBaseEnergy( 0.0 )
  {

     disType = 0;
     energy = 0;
     theYield = 0;
     thePartialXsec = 0;
     theReactionXsec = 0;
     isPrimary = 0;
     theShells = 0;
     theGammas = 0;
     nNeu = 0;
     theLegendre = 0;
     theAngular = 0;
     distribution = 0;
     probs = 0;
     partials = 0;
     actualMult.Put( 0 );

     theLevelEnergies = 0;
     theTransitionProbabilities = 0;
     thePhotonTransitionFraction = 0;

  }

  ~G4ParticleHPPhotonDist()
  {
     delete [] disType;
     delete [] energy;
     delete [] theYield;
     delete [] thePartialXsec;
//     delete [] theReactionXsec;   
//     DHW: not created in this class 
     delete [] isPrimary;
     delete [] theShells;
     delete [] theGammas;
     delete [] nNeu;
     delete [] theAngular;
     delete [] distribution;
     delete [] probs;

     if ( theLegendre != 0 )
     {
        for ( G4int i = 0 ; i < (nDiscrete2-nIso) ; i++ )
           if ( theLegendre[i] != 0 ) delete[] theLegendre[i]; 

        delete [] theLegendre;
     }

     if ( partials != 0 ) 
     {
        for ( G4int i = 0 ; i < nPartials ; i++ )
           { delete partials[i]; }

        delete [] partials;
     }

     delete [] theLevelEnergies;
     delete [] theTransitionProbabilities;
     delete [] thePhotonTransitionFraction;
     if (actualMult.Get() != 0) delete actualMult.Get();
  }
  
  G4bool InitMean(std::istream & aDataFile);
    
  void InitAngular(std::istream & aDataFile);
  
  void InitEnergies(std::istream & aDataFile);
  
  void InitPartials(std::istream& aDataFile, G4ParticleHPVector* theXsec = 0);
  
  G4ReactionProductVector * GetPhotons(G4double anEnergy);
  
  inline G4double GetTargetMass() {return targetMass;}
  
  inline G4bool NeedsCascade() {return repFlag==2;}
  
  inline G4double GetLevelEnergy() {return theBaseEnergy;}

private:

   G4int repFlag;  //representation as multiplicities or transition probability arrays.
   G4double targetMass;
   
   G4int nDiscrete;  //number of discrete photons 
   G4int* disType;  // discrete, or continuum photons
   G4double* energy;  // photon energies
   G4ParticleHPVector* theYield; // multiplicity as a function of neutron energy.
   G4ParticleHPVector theTotalXsec;
   G4ParticleHPVector* thePartialXsec;
   G4ParticleHPVector* theReactionXsec;
   G4int* isPrimary;
  
   G4int isoFlag; // isotropic or not?
   G4int tabulationType;
   G4int nDiscrete2;
   G4int nIso;
   G4double * theShells;
   G4double * theGammas;
   G4int * nNeu;
   G4InterpolationManager theLegendreManager;
   G4ParticleHPLegendreTable ** theLegendre;
   G4ParticleHPAngularP ** theAngular;
   
   G4int * distribution; // not used for the moment.                                 
   G4int nPartials;
   G4ParticleHPVector *  probs; // probabilities for the partial distributions.
   G4ParticleHPPartial ** partials; // the partials, parallel to the above

   G4Cache< std::vector<G4int>* > actualMult;
   
    // for transition prob arrays start
   G4int theInternalConversionFlag;
   G4int nGammaEnergies;
   G4double theBaseEnergy;
   G4double * theLevelEnergies;
   G4double * theTransitionProbabilities;
   G4double * thePhotonTransitionFraction;
    // for transition prob arrays end

   G4ParticleHPFastLegendre theLegend; // fast look-up for leg-integrals
   G4ParticleHPInterpolator theInt; // interpolation
};

#endif
