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/// \file Run.cc
/// \brief Implementation of the Run class

#include "Run.hh"

#include "DetectorConstruction.hh"
#include "HistoManager.hh"
#include "PrimaryGeneratorAction.hh"

#include "G4Material.hh"
#include "G4SystemOfUnits.hh"
#include "G4UnitsTable.hh"

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Run::Run(DetectorConstruction* detector) : fDetector(detector) {}

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void Run::SetPrimary(G4ParticleDefinition* particle, G4double energy)
{
  fParticle = particle;
  fEkin = energy;
}

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void Run::AddEdep(G4double e)
{
  fEdeposit += e;
  fEdeposit2 += e * e;
}

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void Run::AddTrackLength(G4double t)
{
  fTrackLen += t;
  fTrackLen2 += t * t;
}

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void Run::AddProjRange(G4double x)
{
  fProjRange += x;
  fProjRange2 += x * x;
}

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void Run::AddStepSize(G4int nb, G4double st)
{
  fNbOfSteps += nb;
  fNbOfSteps2 += nb * nb;
  fStepSize += st;
  fStepSize2 += st * st;
}

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void Run::SetCsdaRange(G4double value)
{
  fCsdaRange = value;
}

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G4double Run::GetCsdaRange()
{
  return fCsdaRange;
}

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void Run::Merge(const G4Run* run)
{
  const Run* localRun = static_cast<const Run*>(run);

  // pass information about primary particle
  fParticle = localRun->fParticle;
  fEkin = localRun->fEkin;

  // accumulate sums
  fEdeposit += localRun->fEdeposit;
  fEdeposit2 += localRun->fEdeposit2;
  fTrackLen += localRun->fTrackLen;
  fTrackLen2 += localRun->fTrackLen2;
  fProjRange += localRun->fProjRange;
  fProjRange2 += localRun->fProjRange2;
  fNbOfSteps += localRun->fNbOfSteps;
  fNbOfSteps2 += localRun->fNbOfSteps2;
  fStepSize += localRun->fStepSize;
  fStepSize2 += localRun->fStepSize2;

  fCsdaRange = localRun->fCsdaRange;

  G4Run::Merge(run);
}

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void Run::EndOfRun()
{
  std::ios::fmtflags mode = G4cout.flags();
  G4cout.setf(std::ios::fixed, std::ios::floatfield);
  G4int prec = G4cout.precision(2);

  // run conditions
  //
  G4Material* material = fDetector->GetAbsorMaterial();
  G4double density = material->GetDensity();
  G4String partName = fParticle->GetParticleName();

  G4cout << "\n ======================== run summary =====================\n";
  G4cout << "\n The run is " << numberOfEvent << " " << partName << " of "
         << G4BestUnit(fEkin, "Energy") << " through "
         << G4BestUnit(fDetector->GetAbsorRadius(), "Length") << " of " << material->GetName()
         << " (density: " << G4BestUnit(density, "Volumic Mass") << ")" << G4endl;

  if (numberOfEvent == 0) {
    G4cout.setf(mode, std::ios::floatfield);
    G4cout.precision(prec);
    return;
  }

  fEdeposit /= numberOfEvent;
  fEdeposit2 /= numberOfEvent;
  G4double rms = fEdeposit2 - fEdeposit * fEdeposit;
  if (rms > 0.)
    rms = std::sqrt(rms);
  else
    rms = 0.;

  G4cout.precision(3);
  G4cout << "\n Total Energy deposited        = " << G4BestUnit(fEdeposit, "Energy") << " +- "
         << G4BestUnit(rms, "Energy") << G4endl;

  // compute track length of primary track
  //
  fTrackLen /= numberOfEvent;
  fTrackLen2 /= numberOfEvent;
  rms = fTrackLen2 - fTrackLen * fTrackLen;
  if (rms > 0.)
    rms = std::sqrt(rms);
  else
    rms = 0.;

  G4cout.precision(3);
  G4cout << "\n Track length of primary track = " << G4BestUnit(fTrackLen, "Length") << " +- "
         << G4BestUnit(rms, "Length");

  // compare with csda range
  //
  G4cout << "\n Range from EmCalculator = " << G4BestUnit(fCsdaRange, "Length")
         << " (from full dE/dx)" << G4endl;

  // compute projected range of primary track
  //
  fProjRange /= numberOfEvent;
  fProjRange2 /= numberOfEvent;
  rms = fProjRange2 - fProjRange * fProjRange;
  if (rms > 0.)
    rms = std::sqrt(rms);
  else
    rms = 0.;

  G4cout << "\n Projected range               = " << G4BestUnit(fProjRange, "Length") << " +- "
         << G4BestUnit(rms, "Length") << G4endl;

  // nb of steps and step size of primary track
  //
  G4double dNofEvents = double(numberOfEvent);
  G4double fNbSteps = fNbOfSteps / dNofEvents, fNbSteps2 = fNbOfSteps2 / dNofEvents;
  rms = fNbSteps2 - fNbSteps * fNbSteps;
  if (rms > 0.)
    rms = std::sqrt(rms);
  else
    rms = 0.;

  G4cout.precision(2);
  G4cout << "\n Nb of steps of primary track  = " << fNbSteps << " +- " << rms;

  fStepSize /= numberOfEvent;
  fStepSize2 /= numberOfEvent;
  rms = fStepSize2 - fStepSize * fStepSize;
  if (rms > 0.)
    rms = std::sqrt(rms);
  else
    rms = 0.;

  G4cout.precision(3);
  G4cout << "\t Step size= " << G4BestUnit(fStepSize, "Length") << " +- "
         << G4BestUnit(rms, "Length") << G4endl;

  // normalize histograms of longitudinal energy profile
  //
  G4AnalysisManager* analysisManager = G4AnalysisManager::Instance();
  G4int ih = 1;
  G4double binWidth = analysisManager->GetH1Width(ih) * analysisManager->GetH1Unit(ih);
  G4double fac = (1. / (numberOfEvent * binWidth)) * (mm / MeV);
  analysisManager->ScaleH1(ih, fac);

  // normalize histogram d(E/E0)/d(r/r0)
  //
  ih = 8;
  binWidth = analysisManager->GetH1Width(ih);
  fac = 1. / (numberOfEvent * binWidth * fEkin);
  analysisManager->ScaleH1(ih, fac);

  // reset default formats
  G4cout.setf(mode, std::ios::floatfield);
  G4cout.precision(prec);
}

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