#ifndef __cpPlugins__Interface__Loader__h__
#define __cpPlugins__Interface__Loader__h__

#include <cpPlugins/Config.h>
#include <cpPlugins/Pipeline/ProcessObject.h>
#include <iostream>
#include <map>
#include <vector>

namespace cpPlugins
{
  namespace Interface
  {
    /**
     */
    class cpPlugins_EXPORT Loader
    {
    public:
      typedef Loader Self;

    public:
      typedef void ( *TContentsFunc )( std::vector< std::string >* );
      typedef void ( *TCreatorFunc )( itk::LightObject::Pointer& ptr, const std::string& c, const std::string& f );
      typedef std::tuple< void*, TContentsFunc, TCreatorFunc > THandlers;
      typedef std::map< std::string, THandlers > TLibraries;
      typedef std::map< std::string, std::map< std::string, std::string > > TFiltersToLibrariesReferences;

    public:
      Loader( );
      virtual ~Loader( );

      void Register( const std::string& filename );
      void RegisterFromDirectory( const std::string& dirname );
      void GuessEnvironment( const std::string& dirname );
      void SaveEnvironment( const std::string& dirname );
      void UnRegister( const std::string& filename );
      void UnRegisterAll( );

      std::map< std::string, std::set< std::string > > GetFilters( ) const;

      cpPlugins::Pipeline::ProcessObject::Pointer CreateFilter(
        const std::string& category, const std::string& filter,
        const std::string& name = ""
        );

    protected:
      static TLibraries m_Libraries;
      static TFiltersToLibrariesReferences m_References;

    public:
      friend std::ostream& operator<<( std::ostream& o, const Loader& l )
        {
          o << "cpPlugins:" << std::endl;
          for( auto c : l.m_References )
          {
            o << "  + " << c.first << std::endl;
            for( auto f : c.second )
              o << "  |--> " << f.first << " (" << f.second << ")" << std::endl;

          } // rof
          return( o );
        }
    };

  } // ecapseman

} // ecapseman

#endif // __cpPlugins__Interface__Loader__h__

// eof - $RCSfile$