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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 "G4ProcessTable.hh"
#include "G4Radioactivation.hh"
#include "G4SystemOfUnits.hh"
#include "G4TwoVector.hh"
#include "G4UnitsTable.hh"

#include <fstream>

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

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

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void Run::CountProcesses(const G4VProcess* process, G4int iVol)
{
  if (process == nullptr) return;
  G4String procName = process->GetProcessName();
  if (iVol == 1) {
    std::map<G4String, G4int>::iterator it1 = fProcCounter1.find(procName);
    if (it1 == fProcCounter1.end()) {
      fProcCounter1[procName] = 1;
    }
    else {
      fProcCounter1[procName]++;
    }
  }

  if (iVol == 2) {
    std::map<G4String, G4int>::iterator it2 = fProcCounter2.find(procName);
    if (it2 == fProcCounter2.end()) {
      fProcCounter2[procName] = 1;
    }
    else {
      fProcCounter2[procName]++;
    }
  }
}

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void Run::ParticleCount(G4String name, G4double Ekin, G4int iVol)
{
  if (iVol == 1) {
    std::map<G4String, ParticleData>::iterator it = fParticleDataMap1.find(name);
    if (it == fParticleDataMap1.end()) {
      fParticleDataMap1[name] = ParticleData(1, Ekin, Ekin, Ekin);
    }
    else {
      ParticleData& data = it->second;
      data.fCount++;
      data.fEmean += Ekin;
      // update min max
      G4double emin = data.fEmin;
      if (Ekin < emin) data.fEmin = Ekin;
      G4double emax = data.fEmax;
      if (Ekin > emax) data.fEmax = Ekin;
    }
  }

  if (iVol == 2) {
    std::map<G4String, ParticleData>::iterator it = fParticleDataMap2.find(name);
    if (it == fParticleDataMap2.end()) {
      fParticleDataMap2[name] = ParticleData(1, Ekin, Ekin, Ekin);
    }
    else {
      ParticleData& data = it->second;
      data.fCount++;
      data.fEmean += Ekin;
      // update min max
      G4double emin = data.fEmin;
      if (Ekin < emin) data.fEmin = Ekin;
      G4double emax = data.fEmax;
      if (Ekin > emax) data.fEmax = Ekin;
    }
  }
}

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void Run::AddEdep(G4double edep1, G4double edep2)
{
  fEdepTarget += edep1;
  fEdepTarget2 += edep1 * edep1;
  fEdepDetect += edep2;
  fEdepDetect2 += edep2 * edep2;
}

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

  // primary particle info
  //
  fParticle = localRun->fParticle;
  fEkin = localRun->fEkin;

  // accumulate sums
  //
  fEdepTarget += localRun->fEdepTarget;
  fEdepTarget2 += localRun->fEdepTarget2;
  fEdepDetect += localRun->fEdepDetect;
  fEdepDetect2 += localRun->fEdepDetect2;

  // map: processes count in target

  std::map<G4String, G4int>::const_iterator itp1;
  for (itp1 = localRun->fProcCounter1.begin(); itp1 != localRun->fProcCounter1.end(); ++itp1) {
    G4String procName = itp1->first;
    G4int localCount = itp1->second;
    if (fProcCounter1.find(procName) == fProcCounter1.end()) {
      fProcCounter1[procName] = localCount;
    }
    else {
      fProcCounter1[procName] += localCount;
    }
  }

  // map: processes count in detector

  std::map<G4String, G4int>::const_iterator itp2;
  for (itp2 = localRun->fProcCounter2.begin(); itp2 != localRun->fProcCounter2.end(); ++itp2) {
    G4String procName = itp2->first;
    G4int localCount = itp2->second;
    if (fProcCounter2.find(procName) == fProcCounter2.end()) {
      fProcCounter2[procName] = localCount;
    }
    else {
      fProcCounter2[procName] += localCount;
    }
  }

  // map: created particles in target
  std::map<G4String, ParticleData>::const_iterator itc;
  for (itc = localRun->fParticleDataMap1.begin(); itc != localRun->fParticleDataMap1.end(); ++itc) {
    G4String name = itc->first;
    const ParticleData& localData = itc->second;
    if (fParticleDataMap1.find(name) == fParticleDataMap1.end()) {
      fParticleDataMap1[name] =
        ParticleData(localData.fCount, localData.fEmean, localData.fEmin, localData.fEmax);
    }
    else {
      ParticleData& data = fParticleDataMap1[name];
      data.fCount += localData.fCount;
      data.fEmean += localData.fEmean;
      G4double emin = localData.fEmin;
      if (emin < data.fEmin) data.fEmin = emin;
      G4double emax = localData.fEmax;
      if (emax > data.fEmax) data.fEmax = emax;
    }
  }

  // map: created particle in detector
  std::map<G4String, ParticleData>::const_iterator itn;
  for (itn = localRun->fParticleDataMap2.begin(); itn != localRun->fParticleDataMap2.end(); ++itn) {
    G4String name = itn->first;
    const ParticleData& localData = itn->second;
    if (fParticleDataMap2.find(name) == fParticleDataMap2.end()) {
      fParticleDataMap2[name] =
        ParticleData(localData.fCount, localData.fEmean, localData.fEmin, localData.fEmax);
    }
    else {
      ParticleData& data = fParticleDataMap2[name];
      data.fCount += localData.fCount;
      data.fEmean += localData.fEmean;
      G4double emin = localData.fEmin;
      if (emin < data.fEmin) data.fEmin = emin;
      G4double emax = localData.fEmax;
      if (emax > data.fEmax) data.fEmax = emax;
    }
  }

  G4Run::Merge(run);
}

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void Run::EndOfRun()
{
  G4int prec = 5, wid = prec + 2;
  G4int dfprec = G4cout.precision(prec);

  // run condition
  //
  G4String Particle = fParticle->GetParticleName();
  G4cout << "\n The run is " << numberOfEvent << " " << Particle << " of "
         << G4BestUnit(fEkin, "Energy") << " through : ";

  G4cout << "\n Target   : Length = " << G4BestUnit(fDetector->GetTargetLength(), "Length")
         << " Radius    = " << G4BestUnit(fDetector->GetTargetRadius(), "Length")
         << " Material = " << fDetector->GetTargetMaterial()->GetName();
  G4cout << "\n Detector : Length = " << G4BestUnit(fDetector->GetDetectorLength(), "Length")
         << " Thickness = " << G4BestUnit(fDetector->GetDetectorThickness(), "Length")
         << " Material = " << fDetector->GetDetectorMaterial()->GetName() << G4endl;

  if (numberOfEvent == 0) {
    G4cout.precision(dfprec);
    return;
  }

  // compute mean Energy deposited and rms in target
  //
  G4int TotNbofEvents = numberOfEvent;
  fEdepTarget /= TotNbofEvents;
  fEdepTarget2 /= TotNbofEvents;
  G4double rmsEdep = fEdepTarget2 - fEdepTarget * fEdepTarget;
  if (rmsEdep > 0.)
    rmsEdep = std::sqrt(rmsEdep);
  else
    rmsEdep = 0.;

  G4cout << "\n Mean energy deposit in target,   in time window = "
         << G4BestUnit(fEdepTarget, "Energy") << ";  rms = " << G4BestUnit(rmsEdep, "Energy")
         << G4endl;

  // compute mean Energy deposited and rms in detector
  //
  fEdepDetect /= TotNbofEvents;
  fEdepDetect2 /= TotNbofEvents;
  rmsEdep = fEdepDetect2 - fEdepDetect * fEdepDetect;
  if (rmsEdep > 0.)
    rmsEdep = std::sqrt(rmsEdep);
  else
    rmsEdep = 0.;

  G4cout << " Mean energy deposit in detector, in time window = "
         << G4BestUnit(fEdepDetect, "Energy") << ";  rms = " << G4BestUnit(rmsEdep, "Energy")
         << G4endl;

  // frequency of processes in target
  //
  G4cout << "\n Process calls frequency in target :" << G4endl;
  G4int index = 0;
  std::map<G4String, G4int>::iterator it1;
  for (it1 = fProcCounter1.begin(); it1 != fProcCounter1.end(); it1++) {
    G4String procName = it1->first;
    G4int count = it1->second;
    G4String space = " ";
    if (++index % 3 == 0) space = "\n";
    G4cout << " " << std::setw(20) << procName << "=" << std::setw(7) << count << space;
  }
  G4cout << G4endl;

  // frequency of processes in detector
  //
  G4cout << "\n Process calls frequency in detector:" << G4endl;
  index = 0;
  std::map<G4String, G4int>::iterator it2;
  for (it2 = fProcCounter2.begin(); it2 != fProcCounter2.end(); it2++) {
    G4String procName = it2->first;
    G4int count = it2->second;
    G4String space = " ";
    if (++index % 3 == 0) space = "\n";
    G4cout << " " << std::setw(20) << procName << "=" << std::setw(7) << count << space;
  }
  G4cout << G4endl;

  // particles count in target
  //
  G4cout << "\n List of generated particles in target:" << G4endl;

  std::map<G4String, ParticleData>::iterator itc;
  for (itc = fParticleDataMap1.begin(); itc != fParticleDataMap1.end(); itc++) {
    G4String name = itc->first;
    ParticleData data = itc->second;
    G4int count = data.fCount;
    G4double eMean = data.fEmean / count;
    G4double eMin = data.fEmin;
    G4double eMax = data.fEmax;

    G4cout << "  " << std::setw(13) << name << ": " << std::setw(7) << count
           << "  Emean = " << std::setw(wid) << G4BestUnit(eMean, "Energy") << "\t( "
           << G4BestUnit(eMin, "Energy") << " --> " << G4BestUnit(eMax, "Energy") << ")" << G4endl;
  }

  // particles count in detector
  //
  G4cout << "\n List of generated particles in detector:" << G4endl;

  std::map<G4String, ParticleData>::iterator itn;
  for (itn = fParticleDataMap2.begin(); itn != fParticleDataMap2.end(); itn++) {
    G4String name = itn->first;
    ParticleData data = itn->second;
    G4int count = data.fCount;
    G4double eMean = data.fEmean / count;
    G4double eMin = data.fEmin;
    G4double eMax = data.fEmax;

    G4cout << "  " << std::setw(13) << name << ": " << std::setw(7) << count
           << "  Emean = " << std::setw(wid) << G4BestUnit(eMean, "Energy") << "\t( "
           << G4BestUnit(eMin, "Energy") << " --> " << G4BestUnit(eMax, "Energy") << ")" << G4endl;
  }
  G4cout << G4endl;

  // activities in VR mode
  //
  WriteActivity(numberOfEvent);

  // remove all contents in fProcCounter, fCount
  fProcCounter1.clear();
  fProcCounter2.clear();
  fParticleDataMap1.clear();
  fParticleDataMap2.clear();

  // restore default format
  G4cout.precision(dfprec);
}

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void Run::WriteActivity(G4int nevent)
{
  G4ProcessTable* pTable = G4ProcessTable::GetProcessTable();
  G4Radioactivation* rDecay =
    (G4Radioactivation*)pTable->FindProcess("Radioactivation", "GenericIon");

  // output the induced radioactivities (in VR mode only)
  //
  if ((rDecay == 0) || (rDecay->IsAnalogueMonteCarlo())) return;

  G4String fileName = G4AnalysisManager::Instance()->GetFileName() + ".activity";
  std::ofstream outfile(fileName, std::ios::out);

  std::vector<G4RadioactivityTable*> theTables = rDecay->GetTheRadioactivityTables();

  for (size_t i = 0; i < theTables.size(); i++) {
    G4double rate, error;
    outfile << "Radioactivities in decay window no. " << i << G4endl;
    outfile << "Z \tA \tE \tActivity (decays/window) \tError (decays/window) " << G4endl;

    map<G4ThreeVector, G4TwoVector>* aMap = theTables[i]->GetTheMap();
    map<G4ThreeVector, G4TwoVector>::iterator iter;
    for (iter = aMap->begin(); iter != aMap->end(); iter++) {
      rate = iter->second.x() / nevent;
      error = std::sqrt(iter->second.y()) / nevent;
      if (rate < 0.) rate = 0.;  // statically it can be < 0.
      outfile << iter->first.x() << "\t" << iter->first.y() << "\t" << iter->first.z() << "\t"
              << rate << "\t" << error << G4endl;
    }
    outfile << G4endl;
  }
  outfile.close();
}

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