///////////////////////////////////////////////////////////////////////////////
/// \class RAT::Surfaces
///
/// \brief  Constructs the Surfaces
///
/// \author Phil G Jones <p.g.jones@qmul.ac.uk>
/// \author Benjamin Land <benland100@berkeley.edu> -- contact person
///
/// REVISION HISTORY:\n
///     2013-08-01 : P G Jones - New file. \n
///     2014-06-02 : B J Land - Added unified parameters. \n
///
/// \details Loads surface properties from ratdb and builds the surfaces.
/// Anything other than a Fresnel photon interaction at a boundary
/// between two materials (volumes) must be simulated via the use of a
/// G4OpticalSurface. These methods construct such optical surfaces
/// from database definitions. The geometry building code must however
/// place these surfaces if they are to be used c.f. materials.
///
///////////////////////////////////////////////////////////////////////////////
#ifndef __RAT_Surfaces__
#define __RAT_Surfaces__

#include <RAT/DB.hh>

#include <string>
#include <map>

class G4OpticalSurface;

namespace RAT
{

class Surfaces
{
public:
  /// Load and construct surfaces
  static void LoadSurfaces();

  /// Get an optical surface by name
  ///
  /// @param[in] surfaceName of the surface
  /// @return pointer to the optical surface if found or NULL
  static G4OpticalSurface* GetSurface( const std::string& surfaceName ) { return fsSurfaces[surfaceName]; }

private:
  /// Load the properties in the PROPERTY_LIST
  ///
  /// @param[in] name of the surface
  /// @param[in] dbTable that defines the properties
  static void LoadProperties( const std::string& name,  DBLinkPtr dbTable );

  /// Checks that the argument specifies a surface property
  ///
  /// @param[in] property name of the property
  /// @return true if property is a surface property
  static bool IsSurfaceProperty(const std::string& property);

  static std::map< std::string, G4OpticalSurface* > fsSurfaces; ///< Map of surfaces by name
};


} // namespace RAT

#endif