#include <cstdlib>
#include <iostream>
#include <string>

#include <cpPlugins/Interface/Interface.h>
#include <cpPlugins/Interface/DataObject.h>
#include <cpPlugins/Interface/ProcessObject.h>

// -------------------------------------------------------------------------
typedef cpPlugins::Interface::Interface     TInterface;
typedef cpPlugins::Interface::DataObject    TDataObject;
typedef TInterface::TClasses                TClasses;
typedef cpPlugins::Interface::ProcessObject TProcessObject;
typedef cpPlugins::Interface::Parameters    TParameters;

// -------------------------------------------------------------------------
void SaveImage(
  TInterface& plugins, const std::string& fname, TDataObject* image
  )
{
  TProcessObject::Pointer writer;
  writer = plugins.CreateProcessObject( "cpPlugins::Plugins::ImageWriter" );
  if( writer.IsNull( ) )
  {
    std::cerr << "No suitable writer found in plugins." << std::endl;
    return;

  } // fi
  // Configure reader
  TParameters writer_params = writer->GetDefaultParameters( );
  writer_params.AddValueToStringList( "FileName", fname );
  writer->SetParameters( writer_params );

  writer->SetInput( 0, image );
  std::string msg = writer->Update( );
  if( msg != "" )
    std::cerr << "ERROR: " << msg << std::endl;
}

// -------------------------------------------------------------------------
int main( int argc, char* argv[] )
{
  if( argc < 8 )
  {
    std::cerr
      << "Usage: " << argv[ 0 ]
      << " plugins_file"
      << " input_image"
      << " output_hue_image output_saturation_image output_value_image"
      << " dimensions pixel_type" << std::endl;
    return( 1 );

  } // fi
  std::string plugins_file = argv[ 1 ];
  std::string input_image_file = argv[ 2 ];
  std::string output_hue_image_file = argv[ 3 ];
  std::string output_saturation_image_file = argv[ 4 ];
  std::string output_value_image_file = argv[ 5 ];
  unsigned int dimensions = std::atoi( argv[ 6 ] );
  std::string pixel_type = argv[ 7 ];

  // Create interface

  TInterface plugins;
  plugins.Load( plugins_file );

  // Create objects
  TProcessObject::Pointer reader;
  TProcessObject::Pointer filter;

  reader = plugins.CreateProcessObject( "cpPlugins::Plugins::ImageReader" );
  if( reader.IsNull( ) )
  {
    std::cerr << "No suitable reader found in plugins." << std::endl;
    return( 1 );

  } // fi
  filter = plugins.CreateProcessObject( "cpPlugins::Plugins::RGBImageToHSVChannelsFilter" );
  if( filter.IsNull( ) )
  {
    std::cerr << "No suitable filter found in plugins." << std::endl;
    return( 1 );

  } // fi

  // Configure reader
  TParameters reader_params = reader->GetDefaultParameters( );
  reader_params.SetValueAsString( "FileName", input_image_file );
  reader_params.SetValueAsString( "PixelType", pixel_type );
  reader_params.SetValueAsUint( "ImageDimension", dimensions );
  reader_params.SetValueAsUint( "IsColorImage", 1 );
  reader->SetParameters( reader_params );

  // Connect pipeline
  filter->SetInput( 0, reader->GetOutput( 0 ) );

  // Save outputs
  SaveImage( plugins, output_hue_image_file, filter->GetOutput( 0 ) );
  SaveImage( plugins, output_saturation_image_file, filter->GetOutput( 1 ) );
  SaveImage( plugins, output_value_image_file, filter->GetOutput( 2 ) );

  return( 0 );
}

// eof - $RCSfile$