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// Author: Ivana Hrivnacova, 09/04/2014 (ivana@ipno.in2p3.fr)

#include "G4RootRNtupleManager.hh"
#include "G4AnalysisManagerState.hh"

//_____________________________________________________________________________
G4RootRNtupleManager::G4RootRNtupleManager(const G4AnalysisManagerState& state)
 : G4TRNtupleManager<tools::rroot::ntuple>(state)
{}

//_____________________________________________________________________________
G4RootRNtupleManager::~G4RootRNtupleManager()
{}

// 
// private methods
//

//_____________________________________________________________________________
G4bool G4RootRNtupleManager::GetTNtupleRow(
  G4TRNtupleDescription<tools::rroot::ntuple>* ntupleDescription)
{
  auto ntuple = ntupleDescription->fNtuple;
  auto ntupleBinding = ntupleDescription->fNtupleBinding;

  G4bool isInitialized = ntupleDescription->fIsInitialized;
  if ( ! isInitialized ) {

    if ( ! ntuple->initialize(G4cout, *ntupleBinding) ) {
      G4ExceptionDescription description;
      description 
        << "      " 
        << "Ntuple initialization failed !!"; 
      G4Exception("G4RootRNtuple::GetTNtupleRow()",
                  "Analysis_WR021", JustWarning, description);
      return false;
    }
    ntupleDescription->fIsInitialized = true;
    ntuple->start();
  }

  auto next = ntuple->next();
  if ( next ) {
    if ( ! ntuple->get_row() ) {
      G4ExceptionDescription description;
      description 
        << "      " 
        << "Ntuple get_row() failed !!"; 
      G4Exception("G4RootRNtuple::GetTNtupleRow()",
                  "Analysis_WR021", JustWarning, description);
      return false;
    }
  }  

  return next;
}