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//
// particle_hp -- source file
// J.P. Wellisch, Nov-1996
// A prototype of the low energy neutron transport model.
//
// T.Koi 02-08-06 Modified Harmonise to resolve x-section trouble at high-end.
//
// P. Arce, June-2014 Conversion neutron_hp to particle_hp
// V. Ivanchenko July-2023 converted back capture
//
#include "G4ParticleHPElementData.hh"

G4ParticleHPElementData::G4ParticleHPElementData()
{
  precision = 0.02;
  theFissionData = new G4ParticleHPVector;
  theCaptureData = new G4ParticleHPVector;
  theElasticData = new G4ParticleHPVector;
  theInelasticData = new G4ParticleHPVector;
  theIsotopeWiseData = nullptr;
  theBuffer = nullptr;
}

G4ParticleHPElementData::~G4ParticleHPElementData()
{
  delete theFissionData;
  delete theCaptureData;
  delete theElasticData;
  delete theInelasticData;
  delete[] theIsotopeWiseData;
}

void G4ParticleHPElementData::Init(G4Element* theElement,
                                   G4ParticleDefinition* projectile,
                                   const char* dataDirVariable)
{
  auto nIso = (G4int)theElement->GetNumberOfIsotopes();
  auto Z = theElement->GetZasInt();
  const std::size_t dsize = nIso > 0 ? nIso : 1;
  theIsotopeWiseData = new G4ParticleHPIsoData[dsize];

  for (G4int i1 = 0; i1 < nIso; ++i1) {
    G4int A = theElement->GetIsotope(i1)->GetN();
    G4int M = theElement->GetIsotope(i1)->Getm();
    G4double frac = theElement->GetRelativeAbundanceVector()[i1] / CLHEP::perCent;
    UpdateData(A, Z, M, i1, frac, projectile, dataDirVariable);
  }
}

void G4ParticleHPElementData::UpdateData(G4int A, G4int Z, G4int M, G4int index,
                                         G4double abundance,
                                         G4ParticleDefinition* projectile,
                                         const char* dataDirVariable)
{
  // Reads in the Data, using G4ParticleHPIsoData[], and its Init
  theIsotopeWiseData[index].Init(A, Z, M, abundance, projectile, dataDirVariable);

  theBuffer = theIsotopeWiseData[index].MakeElasticData();
  Harmonise(theElasticData, theBuffer);
  delete theBuffer;

  theBuffer = theIsotopeWiseData[index].MakeInelasticData();
  Harmonise(theInelasticData, theBuffer);
  delete theBuffer;

  theBuffer = theIsotopeWiseData[index].MakeCaptureData();
  Harmonise(theCaptureData, theBuffer);
  delete theBuffer;

  theBuffer = theIsotopeWiseData[index].MakeFissionData();
  Harmonise(theFissionData, theBuffer);
  delete theBuffer;
}

void G4ParticleHPElementData::Harmonise(G4ParticleHPVector*& theStore, G4ParticleHPVector* theNew)
{
  if (theNew == nullptr) {
    return;
  }
  G4int s_tmp = 0, n = 0, m_tmp = 0;
  auto theMerge = new G4ParticleHPVector(theStore->GetVectorLength());
  while (theStore->GetEnergy(s_tmp) < theNew->GetEnergy(0)
         && s_tmp < theStore->GetVectorLength())  // Loop checking, 11.05.2015, T. Koi
  {
    theMerge->SetData(m_tmp++, theStore->GetEnergy(s_tmp), theStore->GetXsec(s_tmp));
    ++s_tmp;
  }
  G4ParticleHPVector* active = theStore;
  G4ParticleHPVector* passive = theNew;
  G4ParticleHPVector* tmp;
  G4int a = s_tmp, p = n, t;
  while (a < active->GetVectorLength()
         && p < passive->GetVectorLength())  // Loop checking, 11.05.2015, T. Koi
  {
    if (active->GetEnergy(a) <= passive->GetEnergy(p)) {
      theMerge->SetData(m_tmp, active->GetEnergy(a), active->GetXsec(a));
      G4double x = theMerge->GetEnergy(m_tmp);
      G4double y = std::max(0., passive->GetXsec(x));
      theMerge->SetData(m_tmp, x, theMerge->GetXsec(m_tmp) + y);
      ++m_tmp;
      ++a;
    }
    else {
      tmp = active;
      t = a;
      active = passive;
      a = p;
      passive = tmp;
      p = t;
    }
  }
  while (a != active->GetVectorLength())  // Loop checking, 11.05.2015, T. Koi
  {
    theMerge->SetData(m_tmp++, active->GetEnergy(a), active->GetXsec(a));
    ++a;
  }
  while (p != passive->GetVectorLength())  // Loop checking, 11.05.2015, T. Koi
  {
    G4double x = passive->GetEnergy(p);
    G4double y = std::max(0., active->GetXsec(x));
    theMerge->SetData(m_tmp++, x, passive->GetXsec(p) + y);
    ++p;
  }
  delete theStore;
  theStore = theMerge;
}

G4ParticleHPVector*
G4ParticleHPElementData::MakePhysicsVector(G4Element* theElement,
                                           G4ParticleDefinition* projectile,
                                           G4ParticleHPFissionData* theSet,
                                           char* dataDirVariable)
{
  Init(theElement, projectile, dataDirVariable);
  return GetData(theSet);
}

G4ParticleHPVector*
G4ParticleHPElementData::MakePhysicsVector(G4Element* theElement,
                                           G4ParticleDefinition* projectile,
                                           G4NeutronHPCaptureData* theSet,
                                           char* dataDirVariable)
{
  Init(theElement, projectile, dataDirVariable);
  return GetData(theSet);
}

G4ParticleHPVector*
G4ParticleHPElementData::MakePhysicsVector(G4Element* theElement,
                                           G4ParticleDefinition* projectile,
                                           G4ParticleHPElasticData* theSet,
                                           char* dataDirVariable)
{
  Init(theElement, projectile, dataDirVariable);
  return GetData(theSet);
}
G4ParticleHPVector*
G4ParticleHPElementData::MakePhysicsVector(G4Element* theElement,
                                           G4ParticleDefinition* projectile,
                                           G4ParticleHPInelasticData* theSet,
                                           char* dataDirVariable)
{
  Init(theElement, projectile, dataDirVariable);
  return GetData(theSet);
}