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/// \file medical/fanoCavity/src/Run.cc
/// \brief Implementation of the Run class
//
// $Id: Run.cc 71035 2013-06-10 09:17:35Z gcosmo $
// 
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#include "Run.hh"
#include "DetectorConstruction.hh"
#include "PrimaryGeneratorAction.hh"
#include "HistoManager.hh"

#include "G4Run.hh"
#include "G4RunManager.hh"
#include "G4UnitsTable.hh"
#include "G4EmCalculator.hh"
#include "G4Electron.hh"

#include "G4SystemOfUnits.hh"
#include "Randomize.hh"
#include <iomanip>

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Run::Run(DetectorConstruction* det,PrimaryGeneratorAction *kin )
:fDetector(det),fKinematic(kin), fProcCounter(0), fMateWall(0),fMateCavity(0)

{

    //geometry
    //
    fWallThickness = fDetector->GetWallThickness();
    fWallRadius    = fDetector->GetWallRadius();
    fMateWall      = fDetector->GetWallMaterial();
    fDensityWall   = fMateWall->GetDensity();

    fCavityThickness = fDetector->GetCavityThickness();
    fCavityRadius    = fDetector->GetCavityRadius();
    fSurfaceCavity   = CLHEP::pi*fCavityRadius*fCavityRadius;
    fVolumeCavity    = fSurfaceCavity*fCavityThickness;
    fMateCavity      = fDetector->GetCavityMaterial();
    fDensityCavity   = fMateCavity->GetDensity();
    fMassCavity      = fVolumeCavity*fDensityCavity;

    //process counter
    //
    fProcCounter = new ProcessesCount;

    //kinetic energy of charged secondary a creation
    //
    fEsecondary = fEsecondary2 = 0.;
    fNbSec = 0;

    //charged particles and energy flow in cavity
    //
    fPartFlowCavity[0] = fPartFlowCavity[1] = 0;
    fEnerFlowCavity[0] = fEnerFlowCavity[1] = 0.;

    //total energy deposit and charged track segment in cavity
    //
    fEdepCavity = fEdepCavity2 = fTrkSegmCavity = 0.;
    fNbEventCavity = 0;

    //survey convergence
    //
    fOldEmean = fOldDose = 0.;

    //stepLenth of charged particles
    //
    fStepWall = fStepWall2 = fStepCavity = fStepCavity2 =0.;
    fNbStepWall = fNbStepCavity = 0;

    //histograms
    //
    G4AnalysisManager* analysisManager = G4AnalysisManager::Instance();
    if ( analysisManager->IsActive() ) {
      analysisManager->OpenFile();
    }
}

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Run::~Run()
{
}

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void Run::EndOfRun()
{ // Only call by Master thread
    std::ios::fmtflags mode = G4cout.flags();
    G4cout.setf(std::ios::fixed,std::ios::floatfield);

    if (numberOfEvent == 0) return;

    //run conditions
    //
    G4ParticleDefinition* particle = fKinematic->GetParticleGun()
                                            ->GetParticleDefinition();
    G4String partName = particle->GetParticleName();
    G4double energy = fKinematic->GetParticleGun()->GetParticleEnergy();

    G4cout <<"\n ======================== run summary ======================\n";

    G4int prec = G4cout.precision(3);

    G4cout <<"\n The run consists of "<<numberOfEvent<<" "<< partName << " of "
           << G4BestUnit(energy,"Energy") << " through 2*"
           << G4BestUnit(fWallThickness,"Length") << " of "
           << fMateWall->GetName() << " (density: "
           << G4BestUnit(fDensityWall,"Volumic Mass") << ")" << G4endl;

    G4cout << "\n the cavity is "
           << G4BestUnit(fCavityThickness,"Length") << " of "
           << fMateCavity->GetName() << " (density: "
           << G4BestUnit(fDensityCavity,"Volumic Mass") << "); Mass = "
           << G4BestUnit(fMassCavity,"Mass") << G4endl;

    G4cout<<"\n ============================================================\n";

    //frequency of processes
    //
    G4cout << "\n Process calls frequency --->";
    for (size_t i=0; i< fProcCounter->size();i++) {
       G4String procName = (*fProcCounter)[i]->GetName();
       G4int    count    = (*fProcCounter)[i]->GetCounter();
       G4cout << "  " << procName << "= " << count;
    }
    G4cout << G4endl;

    //extract cross sections with G4EmCalculator
    //
    G4EmCalculator emCalculator;
    G4cout << "\n Gamma crossSections in wall material :";
    G4double sumc = 0.0;
    for (size_t i=0; i< fProcCounter->size();i++) {
      G4String procName = (*fProcCounter)[i]->GetName();
      G4double massSigma =
      emCalculator.ComputeCrossSectionPerVolume(energy,particle,
                                               procName,fMateWall)/fDensityWall;
      if (massSigma > 0.) {
        sumc += massSigma;
        G4cout << "  " << procName << "= "
               << G4BestUnit(massSigma, "Surface/Mass");
      }
    }
    G4cout << "   --> total= "
           << G4BestUnit(sumc, "Surface/Mass") << G4endl;

    //mean kinetic energy of secondary electrons
    //
    if (fNbSec == 0) return;
    G4double meanEsecond = fEsecondary/fNbSec,meanEsecond2= fEsecondary2/fNbSec;
    G4double varianceEsec = meanEsecond2 - meanEsecond*meanEsecond;
    G4double dToverT = 0.;
    if (varianceEsec>0.) dToverT = std::sqrt(varianceEsec/fNbSec)/meanEsecond;
    G4double csdaRange =
        emCalculator.GetCSDARange(meanEsecond,G4Electron::Electron(),fMateWall);

    G4cout.precision(4);
    G4cout
      << "\n Mean energy of secondary e- = " << G4BestUnit(meanEsecond,"Energy")
      << " +- " << 100*dToverT << " %"
      << "  (--> range in wall material = "  << G4BestUnit(csdaRange,"Length")
      << ")"
      << G4endl;

    //compute mass energy transfer coefficient
    //
    G4double massTransfCoef = sumc*meanEsecond/energy;

    G4cout << " Mass_energy_transfer coef: "
           << G4BestUnit(massTransfCoef, "Surface/Mass")
           << G4endl;

    //stopping power from EmCalculator
    //
    G4double dedxWall =
        emCalculator.GetDEDX(meanEsecond,G4Electron::Electron(),fMateWall);
    dedxWall /= fDensityWall;
    G4double dedxCavity =
        emCalculator.GetDEDX(meanEsecond,G4Electron::Electron(),fMateCavity);
    dedxCavity /= fDensityCavity;

    G4cout
      << "\n StoppingPower in wall   = "
      << G4BestUnit(dedxWall,"Energy*Surface/Mass")
      << "\n               in cavity = "
      << G4BestUnit(dedxCavity,"Energy*Surface/Mass")
      << G4endl;

    //charged particle flow in cavity
    //
    G4cout
      << "\n Charged particle flow in cavity :"
      << "\n      Enter --> nbParticles = " << fPartFlowCavity[0]
      << "\t Energy = " << G4BestUnit (fEnerFlowCavity[0], "Energy")
      << "\n      Exit  --> nbParticles = " << fPartFlowCavity[1]
      << "\t Energy = " << G4BestUnit (fEnerFlowCavity[1], "Energy")
      << G4endl;

    if (fPartFlowCavity[0] == 0) return;

    //beam energy fluence
    //
    G4double rBeam = fWallRadius*(fKinematic->GetBeamRadius());
    G4double surfaceBeam = CLHEP::pi*rBeam*rBeam;

    //error on Edep in cavity
    //
    if (fNbEventCavity == 0) return;
    G4double meanEdep  = fEdepCavity/fNbEventCavity;
    G4double meanEdep2 = fEdepCavity2/fNbEventCavity;
    G4double varianceEdep = meanEdep2 - meanEdep*meanEdep;
    G4double dEoverE = 0.;
    if(varianceEdep>0.) dEoverE=std::sqrt(varianceEdep/fNbEventCavity)/meanEdep;

    //total dose in cavity
    //
    G4double doseCavity = fEdepCavity/fMassCavity;
    G4double doseOverBeam = doseCavity*surfaceBeam/(numberOfEvent*energy);

    //track length in cavity
    G4double meantrack = fTrkSegmCavity/fPartFlowCavity[0];

    G4cout.precision(4);
    G4cout
      << "\n Total edep in cavity = "      << G4BestUnit(fEdepCavity,"Energy")
      << " +- " << 100*dEoverE << " %"
      << "\t Total charged trackLength = " <<G4BestUnit(fTrkSegmCavity,"Length")
      << "   (mean value = " << G4BestUnit(meantrack,"Length") << ")"
      << "\n Total dose in cavity = " << doseCavity/(MeV/mg) << " MeV/mg"
      << "\n Dose/EnergyFluence   = " << G4BestUnit(doseOverBeam,"Surface/Mass")
      << G4endl;

    //ratio simulation/theory
    //
    G4double ratio = doseOverBeam/massTransfCoef;
    G4double error = ratio*std::sqrt(dEoverE*dEoverE + dToverT*dToverT);

    G4cout.precision(5);
    G4cout
      << "\n (Dose/EnergyFluence)/Mass_energy_transfer = " << ratio
      << " +- " << error << G4endl;

    //compute mean step size of charged particles
    //
    fStepWall /= fNbStepWall; fStepWall2 /= fNbStepWall;
    G4double rms = fStepWall2 - fStepWall*fStepWall;
    if (rms>0.) rms = std::sqrt(rms); else rms = 0.;

    G4cout.precision(4);
    G4cout
      << "\n StepSize of ch. tracks in wall   = "
      << G4BestUnit(fStepWall,"Length") << " +- " << G4BestUnit( rms,"Length")
      << "\t (nbSteps/track = " << double(fNbStepWall)/fNbSec << ")";

    fStepCavity /= fNbStepCavity; fStepCavity2 /= fNbStepCavity;
    rms = fStepCavity2 - fStepCavity*fStepCavity;
    if (rms>0.) rms = std::sqrt(rms); else rms = 0.;

    G4cout
     << "\n StepSize of ch. tracks in cavity = "
     << G4BestUnit(fStepCavity,"Length") << " +- " << G4BestUnit( rms,"Length")
     << "\t (nbSteps/track = "<<double(fNbStepCavity)/fPartFlowCavity[0] << ")";

    G4cout << G4endl;

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

    // delete and remove all contents in fProcCounter
    while (fProcCounter->size()>0){
      OneProcessCount* aProcCount=fProcCounter->back();
      fProcCounter->pop_back();
      delete aProcCount;
    }
    delete fProcCounter;

}

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void Run::SurveyConvergence(G4int NbofEvents)
{
  if (NbofEvents == 0) return;

  //mean kinetic energy of secondary electrons
  //
  G4double meanEsecond = 0.;
  if (fNbSec > 0) meanEsecond = fEsecondary/fNbSec;
  G4double rateEmean = 0.;
  // compute variation rate (%), iteration to iteration
  if (fOldEmean > 0.) rateEmean = 100*(meanEsecond/fOldEmean - 1.);
  fOldEmean = meanEsecond;

  //beam energy fluence
  //
  G4double rBeam = fWallRadius*(fKinematic->GetBeamRadius());
  G4double surfaceBeam = CLHEP::pi*rBeam*rBeam;
  G4double beamEnergy = fKinematic->GetParticleGun()->GetParticleEnergy();

  //total dose in cavity
  //
  G4double doseCavity = fEdepCavity/fMassCavity;
  G4double doseOverBeam = doseCavity*surfaceBeam/(NbofEvents*beamEnergy);
  G4double rateDose = 0.;
  // compute variation rate (%), iteration to iteration
  if (fOldDose > 0.) rateDose = 100*(doseOverBeam/fOldDose - 1.);
  fOldDose = doseOverBeam;

  std::ios::fmtflags mode = G4cout.flags();
  G4cout.setf(std::ios::fixed,std::ios::floatfield);
  G4int prec = G4cout.precision(3);

  G4cout << "\n ---> NbofEvents= " << NbofEvents
         << "   NbOfelectr= " << fNbSec
         << "   Tkin= " << G4BestUnit(meanEsecond,"Energy")
         << " (" << rateEmean << " %)"
         << "   NbOfelec in cav= " << fPartFlowCavity[0]
         << "   Dose/EnFluence= " << G4BestUnit(doseOverBeam,"Surface/Mass")
         << " (" << rateDose << " %)"
         << G4endl;

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

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void Run::Merge(const G4Run* run) {

   const Run* localRun = static_cast<const Run*>(run);

  fPartFlowCavity[0]+= localRun->fPartFlowCavity[0];
  fPartFlowCavity[1]+= localRun->fPartFlowCavity[1];
  fEnerFlowCavity[0]+= localRun->fEnerFlowCavity[0];
  fEnerFlowCavity[1]+= localRun->fEnerFlowCavity[1];
    fEdepCavity     += localRun->fEdepCavity;
    fEdepCavity2      += localRun->fEdepCavity2;
    fTrkSegmCavity    += localRun->fTrkSegmCavity;
    fNbEventCavity    += localRun->fNbEventCavity;

    fStepWall       += localRun->fStepWall;
    fStepWall2      += localRun->fStepWall2;
  fStepCavity     += localRun->fStepCavity;
  fStepCavity2    += localRun->fStepCavity2;
  fNbStepWall       += localRun->fNbStepWall;
  fNbStepCavity     += localRun->fNbStepCavity;

  fEsecondary      += localRun->fEsecondary;
  fEsecondary2     += localRun->fEsecondary2;

  fNbSec       += localRun->fNbSec;

    // ???  G4double                fOldEmean
  // ??? G4Double         fOldDose;

  // Merge ProcessCount varaibles
  std::vector<OneProcessCount*>::iterator it;
  for ( it = localRun->fProcCounter->begin();it !=localRun->fProcCounter->end();
       it++  )
  {
    OneProcessCount* process = *it;
    for ( G4int i = 0; i < process->GetCounter() ; i++)
      this->CountProcesses(process->GetName());
  }

  G4Run::Merge(run);

}

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void Run::CountProcesses(G4String procName)
{
   //does the process  already encounted ?
   size_t nbProc = fProcCounter->size();
   size_t i = 0;
   while ((i<nbProc)&&((*fProcCounter)[i]->GetName()!=procName)) i++;
   if (i == nbProc) fProcCounter->push_back( new OneProcessCount(procName));

   (*fProcCounter)[i]->Count();
}

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