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// Class template for read ntuple managers for all output types.
//
// Author: Ivana Hrivnacova, 20/07/2017 (ivana@ipno.in2p3.fr)

#ifndef G4TRNtupleManager_h
#define G4TRNtupleManager_h 1

#include "G4BaseRNtupleManager.hh"
#include "G4TRNtupleDescription.hh"
#include "globals.hh"

#include <vector>
#include <string_view>

template <typename NT>
class G4TRNtupleManager : public G4BaseRNtupleManager
{
  public:
    G4TRNtupleManager() = delete;

  protected:
    explicit G4TRNtupleManager(const G4AnalysisManagerState& state);
    ~G4TRNtupleManager() override;

    // Methods to manipulate ntuples
    G4bool IsEmpty() const;
    G4bool Reset();

    // Access methods
    NT* GetNtuple() const;
    NT* GetNtuple(G4int ntupleId) const;

    // Functions independent from the output type
    //
    // Methods to read ntuple from a file
    G4int SetNtuple(G4TRNtupleDescription<NT>* rntupleDescription);

    // Methods to bind ntuple (from base class)
    using G4BaseRNtupleManager::SetNtupleIColumn;
    using G4BaseRNtupleManager::SetNtupleFColumn;
    using G4BaseRNtupleManager::SetNtupleDColumn;
    using G4BaseRNtupleManager::SetNtupleSColumn;

    // Methods to bind ntuple
    G4bool SetNtupleIColumn(G4int ntupleId, const G4String& columnName, G4int& value) final;
    G4bool SetNtupleFColumn(G4int ntupleId, const G4String& columnName, G4float& value) final;
    G4bool SetNtupleDColumn(G4int ntupleId, const G4String& columnName, G4double& value) final;
    G4bool SetNtupleSColumn(G4int ntupleId, const G4String& columnName, G4String& value) final;

    // Bind the ntuple columns of vector type
    G4bool SetNtupleIColumn(
      G4int ntupleId, const G4String& columnName, std::vector<G4int>& vector) override;
    G4bool SetNtupleFColumn(
      G4int ntupleId, const G4String& columnName, std::vector<G4float>& vector) override;
    G4bool SetNtupleDColumn(
      G4int ntupleId, const G4String& columnName, std::vector<G4double>& vector) override;
    G4bool SetNtupleSColumn(
      G4int ntupleId, const G4String& columnName, std::vector<std::string>& vector) override;

    using G4BaseRNtupleManager::GetNtupleRow;
    G4bool GetNtupleRow(G4int ntupleId) final;

    // Access methods
    G4int GetNofNtuples() const final;

    // Utility method
    G4TRNtupleDescription<NT>*  GetNtupleDescriptionInFunction(G4int id,
                                         std::string_view function,
                                         G4bool warn = true) const;

  private:
    // Fuctions which are specific to output type
    //
    virtual G4bool GetTNtupleRow(G4TRNtupleDescription<NT>* rntupleDescription) = 0;

    // Common implementation
    //
    template <typename T>
    G4bool SetNtupleTColumn(G4int ntupleId, const G4String& name,
                            T& value);

    template <typename T>
    G4bool SetNtupleTColumn(G4int ntupleId, const G4String& name,
                            std::vector<T>& vector);

    // Static data members
    static constexpr std::string_view fkClass { "G4TRNtupleManager<NT>" };

    // Data members
    std::vector<G4TRNtupleDescription<NT>*> fNtupleDescriptionVector;
};

#include "G4TRNtupleManager.icc"

#endif