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

#include "SteppingAction.hh"

#include "DetectorConstruction.hh"
#include "G4RunManager.hh"
#include "G4AnalysisManager.hh"
#include "G4DNAElastic.hh"
#include "G4DNAElectronSolvation.hh"
#include "G4Event.hh"
#include "G4EventManager.hh"
#include "G4ITTrackHolder.hh"
#include "G4Molecule.hh"
#include "G4SystemOfUnits.hh"
#include "G4Track.hh"
#include "globals.hh"

#include <map>

using MapOfDelayedLists = std::map<double, std::map<int, G4TrackList*>>;

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SteppingAction::SteppingAction()
  : G4UserSteppingAction()
{
  if (!fpDetector) {
    fpDetector = static_cast<const DetectorConstruction*>
                    (G4RunManager::GetRunManager()->GetUserDetectorConstruction());
  }
}

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void SteppingAction::UserSteppingAction(const G4Step* step)
{
  SetupFlags(step);

  if (fVolumeType == DNAVolumeType::physWorld) {
    step->GetTrack()->SetTrackStatus(fStopAndKill);
  }

  if (fVolumeType == DNAVolumeType::VoxelStraight) {
    return;
  }

  G4double dE = step->GetTotalEnergyDeposit() / eV;
  const G4VProcess* pProcess = step->GetPostStepPoint()->GetProcessDefinedStep();

  // get all processes except G4DNAElectronSolvation
  if ((0 > dE) || (nullptr != dynamic_cast<const G4DNAElectronSolvation*>(pProcess))) {
    return;
  }

  G4double x = step->GetPreStepPoint()->GetPosition().x() / nanometer;
  G4double y = step->GetPreStepPoint()->GetPosition().y() / nanometer;
  G4double z = step->GetPreStepPoint()->GetPosition().z() / nanometer;

  G4double copyNo = G4double(step->GetPreStepPoint()->GetTouchable()->GetVolume()->GetCopyNo());

  G4double eventId =
    G4double(G4EventManager::GetEventManager()->GetConstCurrentEvent()->GetEventID());

  G4AnalysisManager* analysisManager = G4AnalysisManager::Instance();
  analysisManager->FillNtupleDColumn(1, 0, x);
  analysisManager->FillNtupleDColumn(1, 1, y);
  analysisManager->FillNtupleDColumn(1, 2, z);
  analysisManager->FillNtupleDColumn(1, 3, dE);
  analysisManager->FillNtupleDColumn(
    1, 4,
    (step->GetPreStepPoint()->GetKineticEnergy() - step->GetPostStepPoint()->GetKineticEnergy())
      / eV);
  analysisManager->FillNtupleIColumn(1, 5, G4int(fVolumeType));
  analysisManager->FillNtupleDColumn(1, 6, copyNo);
  analysisManager->FillNtupleIColumn(1, 7, eventId);
  analysisManager->AddNtupleRow(1);

  MapOfDelayedLists delayList = G4ITTrackHolder::Instance()->GetDelayedLists();
  for (auto& delayedmap_it : delayList) {
    for (auto& trackList : delayedmap_it.second) {
      if (nullptr == trackList.second) {
        return;
      }
      G4TrackList::iterator itt = trackList.second->begin();
      G4TrackList::iterator endd = trackList.second->end();
      for (; itt != endd; ++itt) {
        G4Track* track = *itt;
        if (track->GetParentID() != step->GetTrack()->GetTrackID()
            || track->GetPosition() != step->GetPostStepPoint()->GetPosition())
        {
          return;
        }

        track->SetTrackStatus(fStopAndKill);
      }
    }
  }
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....

void SteppingAction::SetupFlags(const G4Step* step)
{
  fVolumeType = SetupVolumeType(step->GetPreStepPoint()->GetPhysicalVolume());
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....

DNAVolumeType SteppingAction::SetupVolumeType(const G4VPhysicalVolume* pPhyVolume)
{
  auto it = (fpDetector->GetGeoDataMap()).find(pPhyVolume);

  if (it == (fpDetector->GetGeoDataMap()).end()) {
    G4ExceptionDescription exceptionDescription;
    exceptionDescription << pPhyVolume->GetName() << " is wrong physical volume";
    G4Exception("SteppingAction::SetupVolumeFlag()", "SteppingAction01", FatalException,
                exceptionDescription);
  }

  return it->second;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
