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// Author: Ivana Hrivnacova, 18/06/2013  (ivana@ipno.in2p3.fr)

#include "G4CsvNtupleManager.hh"
#include "G4CsvFileManager.hh"
#include "G4AnalysisManagerState.hh"
#include "G4AnalysisUtilities.hh"

using namespace G4Analysis;

//
// utility methods
//

//_____________________________________________________________________________
G4CsvNtupleManager::G4CsvNtupleManager(const G4AnalysisManagerState& state)
 : G4TNtupleManager<tools::wcsv::ntuple, std::ofstream>(state)
{}

//
// private methods
//

//_____________________________________________________________________________
void G4CsvNtupleManager::CreateTNtupleFromBooking(
  CsvNtupleDescription* ntupleDescription)
{
  // create a file for this ntuple
  if ( ! fFileManager->CreateNtupleFile(ntupleDescription) ) return;

  // create ntuple
  ntupleDescription->SetNtuple(
    new tools::wcsv::ntuple(
          *(ntupleDescription->GetFile()), G4cerr, ntupleDescription->GetNtupleBooking()));
 }

//_____________________________________________________________________________
void G4CsvNtupleManager::FinishTNtuple(
  CsvNtupleDescription* ntupleDescription,
  G4bool /*fromBooking*/)
{

  // Do nothing if the base file name was not yet defined
  if (fFileManager->GetFileName().size() == 0u) return;

  // Create ntuple from booking
  if (ntupleDescription->GetNtuple() == nullptr) {
    CreateTNtupleFromBooking(ntupleDescription);
  }

  // Return if creating ntuple failed
  if (ntupleDescription->GetNtuple() == nullptr) {
    Warn("Creating ntuple has failed.", fkClass, "FinishTNtuple");
    return;
  }

  // Write header if ntuple already exists
  if ( ! WriteHeader(ntupleDescription->GetNtuple()) ) {
    Warn("Writing ntuple header has failed.", fkClass, "FinishTNtuple");
  }
}

//_____________________________________________________________________________
G4bool G4CsvNtupleManager::WriteHeader(tools::wcsv::ntuple* ntuple) const
{
// Write header if ntuple already exists and if this option is activated.
// When both Hippo and Commented headers are selected, only Commented
// header, which reading is supported.
// Return false only if an error occurred.

  if ( fIsCommentedHeader ) {
    return ntuple->write_commented_header(G4cout);
  }

  // write hippo header (if activated and if not commented header)
  if ( fIsHippoHeader ) {
    ntuple->write_hippo_header();
    return true;
  }

  return true;
}