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/// \file DetectorConstruction.hh
/// \brief Definition of the DetectorConstruction class

#ifndef DetectorConstruction_h
#define DetectorConstruction_h 1

#include "G4VPhysicalVolume.hh"
#include "G4VUserDetectorConstruction.hh"
#include "globals.hh"

class G4Material;
class DetectorMessenger;

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class DetectorConstruction : public G4VUserDetectorConstruction
{
  public:
    DetectorConstruction();
    ~DetectorConstruction();

  public:
    void SetMaterialScatter(G4String);
    void SetThicknessScatter(G4double);

    virtual G4VPhysicalVolume* Construct();

    void UpdateGeometry();

  public:
    void PrintGeometry();

    G4double GetThicknessWorld() { return fThickness_World; };
    G4double GetRadiusWorld() { return fRadius_World; };
    G4double GetThicknessFrame() { return fThickness_Frame; };

    G4Material* GetMaterialScatter() { return fMaterial_ScatterFoil; };
    G4double GetThicknessScatter() { return fThickness_ScatterFoil; };

    G4double GetZdist_foil_detector()
    {
      return fThickness_Frame - fZfront_ScatterFoil - 0.5 * fThickness_ScatterFoil;
    };

    const G4VPhysicalVolume* GetpvolWorld() { return fPvol_World; };
    const G4VPhysicalVolume* GetpvolFrame() { return fPvol_Frame; };

  private:
    G4Material* fMaterial_World;
    G4double fRadius_World;
    G4double fThickness_World;

    G4Material* fMaterial_Frame;
    G4double fThickness_Frame;
    G4double fZfront_Frame;

    G4Material* fMaterial_ExitWindow;
    G4double fThickness_ExitWindow;
    G4double fZfront_ExitWindow;

    G4Material* fMaterial_ScatterFoil;
    G4double fThickness_ScatterFoil;
    G4double fZfront_ScatterFoil;

    G4Material* fMaterial_MonitorChbr;
    G4double fThickness_MonitorChbr;
    G4double fZfront_MonitorChbr;

    G4Material* fMaterial_Bag;
    G4double fThickness_Bag;
    G4double fZfront_Bag;

    G4Material* fMaterial_Gas;
    G4double fThickness_Gas;

    G4Material* fMaterial_Ring;
    G4double fThickness_Ring;
    G4double fInnerRadius_Ring;

    G4VPhysicalVolume* fPvol_World;
    G4VPhysicalVolume* fPvol_Frame;

    DetectorMessenger* fDetectorMessenger;

  private:
    void DefineMaterials();
    void GeometryParameters();
    G4VPhysicalVolume* ConstructVolumes();
};

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#endif