////////////////////////////////////////////////////////////////////////
/// \class RAT::PMTConstructor
///
/// \brief   Class that constructs the PMT Logical Volume using \n
///          the PMT parameters
///
/// \author  Phil Jones <p.jones22@physics.ox.ac.uk>
/// \author Aksel Hallin <aksel.hallin@ualberta.ca> -- contact person
///
/// REVISION HISTORY:\n
///     07/09 : P.Jones - First Revision, new file. \n
///     08/10 : P.Jones - Added model parameterization \n
///     03/12 : P.Jones - Split into base class to allow square and
///                       cylindrical derived classes. \n
///
/// \details  Takes the PMT parameters and constructs a PMT
///          solid and places it into a logical volume
///
////////////////////////////////////////////////////////////////////////


#ifndef __RAT_PMTConstructor__
#define __RAT_PMTConstructor__

#include <RAT/PMTConstructorParams.hh>
#include <RAT/ConstructorBase.hh>

#include <vector>
#include <string>

class G4PVPlacement;
class G4LogicalVolume;
class GLG4TorusStack;
class G4OpticalSurface;

namespace RAT
{

class PMTConstructor : public ConstructorBase
{
public:
  /// Constructor for the class, needs parameters and a name
  PMTConstructor( const std::string& prefix, ///< PMT Volume base name, i.e. prefix
                  const PMTConstructorParams& params ///< Parameters that define the pmt
                );
  virtual ~PMTConstructor() {}

  /// Construct the solids and logical PMT volumes
  virtual void ConstructLogical() = 0;
  /// Second stage of construction, add the logical surfaces (post placement in mother volume)
  void ConstructPhysical( G4PVPlacement* bodyPhys );
  /// Returns the logical volume for the bucket
  G4LogicalVolume* GetLogicalVolume();
  /// Returns the Max height above the pmt equator of the bucket
  virtual double GetMaxHeight() = 0;
  /// Returns the Max depth below the pmt equator of the bucket (note returns a -ive number)
  virtual double GetMaxDepth() = 0;
  /// Returns the Max radius
  virtual double GetHexRadius() = 0;
  /// Returns the z coord of the base of the pure photocathode
  double GetPhotocathodeBase();
  /// Returns the PMT type
  std::string GetType();
  /// Returns the Photocathode surface
  G4OpticalSurface* GetPhotocathodeSurface();
  /// Returns the Mirror surface
  G4OpticalSurface* GetMirrorSurface();
  /// Returns the name of the optical model
  std::string GetModelType();
  /// Returns the name of the params for the optical model
  std::string GetModelParams();
  /// Returns the pmt shape
  inline PMTConstructorParams::EShape GetShape();
protected:
  /// Set the visualisation and detector properties
  void SetAttributes();

  PMTConstructorParams fPMTParameters; ///< The parameters that define a PMT

  std::string fPrefix; ///< The name used for the solids

  G4LogicalVolume* fBodyLogic; ///< The body logical volume
  G4LogicalVolume* fInner1Logic; ///< The inner (1=Upper) logical
  G4LogicalVolume* fInner2Logic; ///< The inner overlap region logical, may be NULL if PMT has no overlap region
  G4LogicalVolume* fInner3Logic; ///< The inner (3=Lower) logical
  G4LogicalVolume* fDynode1Logic; ///< The dynode logical (or top only)
  G4LogicalVolume* fDynode2Logic; ///< The dynode logical (bottom or middle only)
  G4LogicalVolume* fDynode3Logic; ///< The dynode logical (bottom only)

  G4PVPlacement* fInner1Phys;
  G4PVPlacement* fInner2Phys;
  G4PVPlacement* fInner3Phys;
private:
  ///To prevent usage
  PMTConstructor();
};

inline std::string
PMTConstructor::GetType()
{
  return fPMTParameters.fPMTType;
}

inline G4OpticalSurface*
PMTConstructor::GetPhotocathodeSurface()
{
  //Needed for optical Models
  return fPMTParameters.fPhotocathodeSurface;
}

inline G4OpticalSurface*
PMTConstructor::GetMirrorSurface()
{
  //Needed for optical Models
  return fPMTParameters.fMirrorSurface;
}

inline double
PMTConstructor::GetPhotocathodeBase()
{
  // Needed for GLG4 PMT optical model
  return fPMTParameters.fPCMirrorOverlapTop;
}

inline PMTConstructorParams::EShape
PMTConstructor::GetShape()
{
  return fPMTParameters.fShape;
}

} //::RAT

#endif