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/// \file EmCalorimeterSD.cc
/// \brief Implementation of the B5::EmCalorimeterSD class

#include "EmCalorimeterSD.hh"

#include "Constants.hh"
#include "EmCalorimeterHit.hh"

#include "G4HCofThisEvent.hh"
#include "G4SDManager.hh"
#include "G4Step.hh"

namespace B5
{

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EmCalorimeterSD::EmCalorimeterSD(G4String name) : G4VSensitiveDetector(name)
{
  collectionName.insert("EMcalorimeterColl");
}

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void EmCalorimeterSD::Initialize(G4HCofThisEvent* hce)
{
  fHitsCollection = new EmCalorimeterHitsCollection(SensitiveDetectorName, collectionName[0]);
  if (fHCID < 0) {
    fHCID = G4SDManager::GetSDMpointer()->GetCollectionID(fHitsCollection);
  }
  hce->AddHitsCollection(fHCID, fHitsCollection);

  // fill calorimeter hits with zero energy deposition
  for (auto i = 0; i < kNofEmCells; i++) {
    fHitsCollection->insert(new EmCalorimeterHit(i));
  }
}

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G4bool EmCalorimeterSD::ProcessHits(G4Step* step, G4TouchableHistory*)
{
  auto edep = step->GetTotalEnergyDeposit();
  if (edep == 0.) return true;

  auto touchable = step->GetPreStepPoint()->GetTouchable();
  auto physical = touchable->GetVolume();
  auto copyNo = physical->GetCopyNo();

  auto hit = (*fHitsCollection)[copyNo];
  // check if it is first touch
  if (!(hit->GetLogV())) {
    // fill volume information
    hit->SetLogV(physical->GetLogicalVolume());
    G4AffineTransform transform = touchable->GetHistory()->GetTopTransform();
    transform.Invert();
    hit->SetRot(transform.NetRotation());
    hit->SetPos(transform.NetTranslation());
  }
  // add energy deposition
  hit->AddEdep(edep);

  return true;
}

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

}  // namespace B5