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/// \file VG01DetectorConstruction.hh
/// \brief Definition of the VG01DetectorConstruction class

#ifndef VG01DetectorConstruction_h
#define VG01DetectorConstruction_h 1

#include "G4GDMLParser.hh"
#include "G4String.hh"
#include "G4VUserDetectorConstruction.hh"

class G4VPhysicalVolume;
class G4FieldManager;
class G4UniformMagField;
class VG01DetectorMessenger;

class VG01DetectorConstruction : public G4VUserDetectorConstruction
{
  public:
    VG01DetectorConstruction();
    ~VG01DetectorConstruction();

    G4VPhysicalVolume* Construct() override;

    void SetGDMLFileName(const G4String& gdmlfile) { fGDMLFileName = gdmlfile; }
    void SetUseVecGeom(bool b) { fUseVecGeom = b; }
    void SetMagFieldValue(const G4double fieldValue) { fglobFieldValue = fieldValue; }

    static G4double GetFieldValue() { return fglobFieldValue; }

  private:
    void CreateMagFieldAndIntegrator();

  private:
    // this static member is for the print out
    static G4double fglobFieldValue;

    G4String fGDMLFileName;
    G4GDMLParser fParser;
    G4VPhysicalVolume* fWorld;
    G4FieldManager* fFieldMgr;
    G4UniformMagField* fUniformMagField;
    bool fUseVecGeom = true;
    VG01DetectorMessenger* fDetectorMessenger = nullptr;
};

#endif