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// The manager for Root output file operations.

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

#ifndef G4RootFileManager_h
#define G4RootFileManager_h 1

#include "G4VFileManager.hh"
#include "globals.hh"

#include <vector>
#include <memory>

namespace tools {
namespace wroot { 
class file; 
class directory;
}
}  

class G4RootFileManager : public G4VFileManager
{
  public:
    explicit G4RootFileManager(const G4AnalysisManagerState& state);
    virtual ~G4RootFileManager();

    // Methods to manipulate file
    virtual G4bool OpenFile(const G4String& fileName) final;
    virtual G4bool WriteFile() final;
    virtual G4bool CloseFile() final; 

    G4bool CreateHistoDirectory();
    G4bool CreateNtupleDirectory();
    
    // Set methods
    void  SetNofNtupleFiles(G4int nofFiles);
    void  SetBasketSize(unsigned int basketSize);
    void  SetBasketEntries(unsigned int basketEntries);

    // Get methods
    tools::wroot::directory* GetHistoDirectory() const;
    tools::wroot::directory* GetNtupleDirectory() const;
    std::shared_ptr<tools::wroot::file> GetNtupleFile(G4int index) const;
    tools::wroot::directory* GetMainNtupleDirectory(G4int index) const;
    unsigned int GetBasketSize() const;
    unsigned int GetBasketEntries() const;

  private:
    // methods
    G4bool OpenNtupleFiles();
    G4bool WriteFile(std::shared_ptr<tools::wroot::file> rfile, 
                     const G4String& fileName);
    G4bool CloseFile(std::shared_ptr<tools::wroot::file> rfile, 
                     const G4String& fileName);

    // data members
    std::shared_ptr<tools::wroot::file>  fFile;
    tools::wroot::directory*  fHistoDirectory;
    tools::wroot::directory*  fNtupleDirectory;
    G4int  fNofNtupleFiles;
    std::vector<std::shared_ptr<tools::wroot::file> >  fNtupleFiles;
    std::vector<tools::wroot::directory*>  fMainNtupleDirectories;
    unsigned int fBasketSize;
    unsigned int fBasketEntries;
};

// inline functions

inline void  G4RootFileManager::SetNofNtupleFiles(G4int nofFiles)  
{ fNofNtupleFiles = nofFiles; }

inline void  G4RootFileManager::SetBasketSize(unsigned int basketSize)  
{ fBasketSize = basketSize; }

inline void  G4RootFileManager::SetBasketEntries(unsigned int basketEntries)  
{ fBasketEntries = basketEntries; }

inline tools::wroot::directory* G4RootFileManager::GetHistoDirectory() const
{ return fHistoDirectory; }

inline tools::wroot::directory* G4RootFileManager::GetNtupleDirectory() const
{ return fNtupleDirectory; }

inline unsigned int G4RootFileManager::GetBasketSize() const
{ return fBasketSize; }

inline unsigned int G4RootFileManager::GetBasketEntries() const
{ return fBasketEntries; }

#endif