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/// \file B4cCalorimeterSD.cc
/// \brief Implementation of the B4cCalorimeterSD class

#include "CalorimeterSD.hh"
#include "G4HCofThisEvent.hh"
#include "G4Step.hh"
#include "G4ThreeVector.hh"
#include "G4SDManager.hh"
#include "G4ios.hh"

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CalorimeterSD::CalorimeterSD(
                            const G4String& name, 
                            const G4String& hitsCollectionName
)

 : G4VSensitiveDetector(name),
   fHitsCollection(nullptr)

{
  collectionName.insert(hitsCollectionName);
}

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CalorimeterSD::~CalorimeterSD()
{ 
}

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void CalorimeterSD::Initialize(G4HCofThisEvent* hce)
{
  // Create hits collection
  fHitsCollection 
    = new CalorHitsCollection(SensitiveDetectorName, collectionName[0]);

  // Add this collection in hce
  auto hcID 
    = G4SDManager::GetSDMpointer()->GetCollectionID(collectionName[0]);
  hce->AddHitsCollection( hcID, fHitsCollection ); 

  // Create hits
  // fNofCells for cells + one more for total sums 
  //for (G4int i=0; i<fNofCells+1; i++ ) {
   fHitsCollection->insert(new CalorHit());
  //}
}

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G4bool CalorimeterSD::ProcessHits(G4Step* step,
                                     G4TouchableHistory*)
{  
  // energy deposit
  auto edep = step->GetTotalEnergyDeposit();
  
  // step length
  G4double stepLength = 0.;
  if ( step->GetTrack()->GetDefinition()->GetPDGCharge() != 0. ) {
    stepLength = step->GetStepLength();
  }

  if ( edep==0. && stepLength == 0. ) return false;      

  auto touchable = (step->GetPreStepPoint()->GetTouchable());
    
  // Get calorimeter cell id 
 // auto layerNumber = touchable->GetReplicaNumber(1);
  
  // Get hit accounting data for this cell
 // auto hit = (*fHitsCollection);
 // if ( ! hit ) {
  //  G4ExceptionDescription msg;
  //  msg << "Cannot access hit " << layerNumber; 
   // G4Exception("B4cCalorimeterSD::ProcessHits()",
    //  "MyCode0004", FatalException, msg);
  //}         

  // Get hit for total accounting
  auto hitTotal 
    = (*fHitsCollection)[fHitsCollection->entries()-1];
  
  // Add values
  //hit->Add(edep, stepLength);
  hitTotal->Add(edep, stepLength); 
  /*G4cout<<"-------------"<<G4endl;
    G4cout<<"edep="<<edep<<G4endl;
G4cout<<"-------------"<<G4endl;*/
  return true;
}

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void CalorimeterSD::EndOfEvent(G4HCofThisEvent*)
{
  if ( verboseLevel>1 ) { 
     auto nofHits = fHitsCollection->entries();
     G4cout
       << G4endl 
       << "-------->Hits Collection: in this event they are " << nofHits 
       << " hits in the tracker chambers: " << G4endl;
     for ( G4int i=0; i<nofHits; i++ ) (*fHitsCollection)[i]->Print();
  }
}

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