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// Author: Ivana Hrivnacova, 15/09/2020  (ivana@ipno.in2p3.fr)

#include "G4AnalysisUtilities.hh"

#include "tools/wcsv_histo"
#include "tools/histo/h1d"
#include "tools/histo/h2d"
#include "tools/histo/h3d"
#include "tools/histo/p1d"
#include "tools/histo/p2d"

//_____________________________________________________________________________
template <>
inline
G4bool G4CsvHnFileManager<tools::histo::p1d>::Write(
  std::ofstream& hnfile, tools::histo::p1d* ht)
{
  return tools::wcsv::pto(hnfile, ht->s_cls(), *ht);
}

//_____________________________________________________________________________
template <>
inline
G4bool G4CsvHnFileManager<tools::histo::p2d>::Write(
  std::ofstream& hnfile, tools::histo::p2d* ht)
{
  return tools::wcsv::pto(hnfile, ht->s_cls(), *ht);
}

//_____________________________________________________________________________
template <typename HT>
inline
G4bool G4CsvHnFileManager<HT>::Write(
  std::ofstream& hnfile, HT* ht)
{
  return tools::wcsv::hto(hnfile, ht->s_cls(), *ht);
}

//_____________________________________________________________________________
template <typename HT>
inline
G4bool G4CsvHnFileManager<HT>::WriteExtra(
  HT* ht, const G4String& htName, const G4String& fileName)
{
  // create a new file
  std::ofstream hnFile(fileName);

  // Do nothing if there is no file
  if ( ! hnFile.is_open() ) return false;

  auto result = Write(hnFile, ht);

  if ( ! result ) {
    G4Analysis::Warn(
      "Saving " + G4Analysis::GetHnType<HT>() + " " + htName + " failed",
      fkClass, "WriteExtra");
    return false;
  }
  hnFile.close();
  return true;
}

//_____________________________________________________________________________
template <typename HT>
inline
G4bool G4CsvHnFileManager<HT>::Write(
  HT* ht, const G4String& htName, G4String& fileName)
{
  if ( fileName.empty() ) {
    // should not happen
    G4cerr << "!!! Csv file name not defined." << G4endl;
    G4cerr << "!!! Write " << htName << " failed." << G4endl;
    return false;
  }

  // Update fileName with cycle number
  fileName = fFileManager->GetHnFileName(fileName, fFileManager->GetCycle());

  auto hnFile = fFileManager->GetTFile(fileName, false);
  if ( ! hnFile ) {
    // If histogram file name was not defined per object
    // a file should be created from the provided default file name
    auto hnFileName = fFileManager->GetHnFileName(G4Analysis::GetHnType<HT>(), htName);

    // If histo directory name is set and if this directory exists
    // add directory path to hnFileName
    if ( fFileManager->IsHistoDirectory() ) {
      hnFileName = "./" + fFileManager->GetHistoDirectoryName() + "/" + hnFileName;
    }

    if ( ! hnFileName.empty() ) {
      hnFile = fFileManager->CreateTFile(hnFileName);
    }

    if ( ! hnFile ) {
      G4Analysis::Warn("Failed to get Csv file " + fileName, fkClass, "Write");
      return false;
    }
    fileName = hnFileName;
  }

  return Write(*hnFile, ht);
}