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// Base class for readers file managers.
//
// Author: Ivana Hrivnacova, 06/08/2021  (ivana@ijclab.in2p3.fr)

#ifndef G4VRFileManager_h
#define G4VRFileManager_h 1

#include "G4BaseFileManager.hh"
#include "G4VTHnRFileManager.hh"

#include <memory>
#include <string_view>

namespace tools {
namespace histo {
class h1d;
class h2d;
class h3d;
class p1d;
class p2d;
}
}

class G4VRFileManager : public G4BaseFileManager
{
  public:
    explicit G4VRFileManager(const G4AnalysisManagerState& state)
      : G4BaseFileManager(state) {}
    G4VRFileManager() = delete;
    ~G4VRFileManager() override = default;

    // Methods applied to all registered files
    virtual void CloseFiles() = 0;

    // Access to helpers
    template <typename HT>
    std::shared_ptr<G4VTHnRFileManager<HT>> GetHnRFileManager() const;

  protected:
    // Static data members
    static constexpr std::string_view fkClass { "G4VRFileManager" };

    // Data members
    // FileManagers per object type
    std::shared_ptr<G4VTHnRFileManager<tools::histo::h1d>> fH1RFileManager { nullptr };
    std::shared_ptr<G4VTHnRFileManager<tools::histo::h2d>> fH2RFileManager { nullptr };
    std::shared_ptr<G4VTHnRFileManager<tools::histo::h3d>> fH3RFileManager { nullptr };
    std::shared_ptr<G4VTHnRFileManager<tools::histo::p1d>> fP1RFileManager { nullptr };
    std::shared_ptr<G4VTHnRFileManager<tools::histo::p2d>> fP2RFileManager { nullptr };
};

// inline functions

template <>
inline
std::shared_ptr<G4VTHnRFileManager<tools::histo::h1d>>
G4VRFileManager::GetHnRFileManager<tools::histo::h1d>() const
{ return fH1RFileManager; }

template <>
inline
std::shared_ptr<G4VTHnRFileManager<tools::histo::h2d>>
G4VRFileManager::GetHnRFileManager<tools::histo::h2d>() const
{ return fH2RFileManager; }

template <>
inline
std::shared_ptr<G4VTHnRFileManager<tools::histo::h3d>>
G4VRFileManager::GetHnRFileManager<tools::histo::h3d>() const
{ return fH3RFileManager; }

template <>
inline
std::shared_ptr<G4VTHnRFileManager<tools::histo::p1d>>
G4VRFileManager::GetHnRFileManager<tools::histo::p1d>() const
{ return fP1RFileManager; }

template <>
inline
std::shared_ptr<G4VTHnRFileManager<tools::histo::p2d>>
G4VRFileManager::GetHnRFileManager<tools::histo::p2d>() const
{ return fP2RFileManager; }

#endif