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// Base class for H2 manager.
//
// Author: Ivana Hrivnacova, 18/06/2013  (ivana@ipno.in2p3.fr)

#ifndef G4VH2Manager_h
#define G4VH2Manager_h 1

#include "globals.hh"

#include <vector>
#include <memory>

class G4HnManager;

class G4VH2Manager
{
  // Disable using the object managers outside G4VAnalysisManager
  friend class G4VAnalysisManager;
  friend class G4VAnalysisReader;

  public:
    G4VH2Manager() {}
    virtual ~G4VH2Manager() {}

    // deleted copy constructor & assignment operator
    G4VH2Manager(const G4VH2Manager& rhs) = delete;
    G4VH2Manager& operator=(const G4VH2Manager& rhs) =delete;

  protected:
    // Methods for handling histograms
    virtual G4int CreateH2(const G4String& name, const G4String& title,
                           G4int nxbins, G4double xmin, G4double xmax, 
                           G4int nybins, G4double ymin, G4double ymax,
                           const G4String& xunitName = "none", 
                           const G4String& yunitName = "none",
                           const G4String& xfcnName = "none", 
                           const G4String& yfcnName = "none",
                           const G4String& xbinScheme = "linear",
                           const G4String& ybinScheme = "linear") = 0;
                           
    virtual G4int CreateH2(const G4String& name, const G4String& title,
                           const std::vector<G4double>& xedges,
                           const std::vector<G4double>& yedges,
                           const G4String& xunitName = "none", 
                           const G4String& yunitName = "none",
                           const G4String& xfcnName = "none", 
                           const G4String& yfcnName = "none") = 0;
                           
    virtual G4bool SetH2(G4int id,
                           G4int nxbins, G4double xmin, G4double xmax, 
                           G4int nybins, G4double ymin, G4double ymax,
                           const G4String& xunitName = "none", 
                           const G4String& yunitName = "none",
                           const G4String& xfcnName = "none", 
                           const G4String& yfcnName = "none", 
                           const G4String& xbinScheme = "linear",
                           const G4String& ybinScheme = "linear") = 0;

    virtual G4bool SetH2(G4int id,
                           const std::vector<G4double>& xedges,
                           const std::vector<G4double>& yedges,
                           const G4String& xunitName = "none", 
                           const G4String& yunitName = "none",
                           const G4String& xfcnName = "none", 
                           const G4String& yfcnName = "none") = 0;

    virtual G4bool ScaleH2(G4int id, G4double factor) = 0;

    // Methods to fill histograms
    virtual G4bool FillH2(G4int id, G4double xvalue, G4double yvalue,
                          G4double weight = 1.0) = 0;
    
    // Access methods
    virtual G4int  GetH2Id(const G4String& name, G4bool warn = true) const = 0;

    // Access to H2 parameters
    virtual G4int    GetH2Nxbins(G4int id) const = 0;
    virtual G4double GetH2Xmin(G4int id) const = 0;
    virtual G4double GetH2Xmax(G4int id) const = 0;
    virtual G4double GetH2XWidth(G4int id) const = 0;
    virtual G4int    GetH2Nybins(G4int id) const = 0;
    virtual G4double GetH2Ymin(G4int id) const = 0;
    virtual G4double GetH2Ymax(G4int id) const = 0;
    virtual G4double GetH2YWidth(G4int id) const = 0;

    // Setters for attributes for plotting
    virtual G4bool SetH2Title(G4int id, const G4String& title) = 0;
    virtual G4bool SetH2XAxisTitle(G4int id, const G4String& title) = 0;
    virtual G4bool SetH2YAxisTitle(G4int id, const G4String& title) = 0;
    virtual G4bool SetH2ZAxisTitle(G4int id, const G4String& title) = 0;

    // Access attributes for plotting
    virtual G4String GetH2Title(G4int id) const = 0;
    virtual G4String GetH2XAxisTitle(G4int id) const = 0;
    virtual G4String GetH2YAxisTitle(G4int id) const = 0;
    virtual G4String GetH2ZAxisTitle(G4int id) const = 0;

    // Methods to manipulate histograms
    virtual G4bool WriteOnAscii(std::ofstream& output) = 0;

    // Access to Hn manager
    virtual std::shared_ptr<G4HnManager> GetHnManager() = 0;
};

#endif

