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// The messenger class for batch plotting.
// It implements commands in /analysis/plot directory.
//
// Author: Ivana Hrivnacova, 21/10/2015  (ivana@ipno.in2p3.fr)

#ifndef G4PlotMessenger_h
#define G4PlotMessenger_h 1

#include "G4UImessenger.hh"
#include "globals.hh"

#include <memory>
#include <string_view>

class G4PlotParameters;
class G4UIdirectory;
class G4UIcommand;
class G4UIcmdWithAString;
class G4UIparameter;

class G4PlotMessenger : public G4UImessenger
{
  public:
    explicit G4PlotMessenger(G4PlotParameters* plotParameters);
    G4PlotMessenger() = delete;
    ~G4PlotMessenger() override;

    // Methods
    void SetNewValue(G4UIcommand* command, G4String value) final;

  private:
    // Helper functions
    template <typename CMD>
    std::unique_ptr<CMD> CreateCommand(G4String name, G4String guidance);
    void AddIntParameter(
      G4UIcommand& command, G4String name, G4String guidance, G4String range = "");

    // Functions to create commands
    void SetStyleCmd();
    void SetLayoutCmd();
    void SetDimensionsCmd();

    // constants
    static constexpr std::string_view fkClass { "G4PlotMessenger" };

    // Data members
    G4PlotParameters*  fPlotParameters { nullptr }; ///< Associated class
    std::unique_ptr<G4UIdirectory>  fDirectory;

    std::unique_ptr<G4UIcommand>  fSetLayoutCmd;
    std::unique_ptr<G4UIcommand>  fSetDimensionsCmd;
    std::unique_ptr<G4UIcmdWithAString>  fSetStyleCmd;
};

//_____________________________________________________________________________
template <typename CMD>
std::unique_ptr<CMD> G4PlotMessenger::CreateCommand(
  G4String name, G4String guidance)
{
  G4String fullName = "/analysis/plot/" + name;

  auto command = std::make_unique<CMD>(fullName, this);
  command->SetGuidance(guidance.c_str());
  command->AvailableForStates(G4State_PreInit, G4State_Idle);

  return command;
}

#endif