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

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

int main( int argc, char* argv[] )
{
  if( argc < 4 )
  {
    std::cerr
      << "Usage: " << argv[ 0 ]
      << " plugins_file"
      << " input_image output_image" << std::endl;
    return( 1 );

  } // fi

  // Create interface
  typedef cpPlugins::Interface::Interface TInterface;
  typedef TInterface::TClasses            TClasses;
  TInterface plugins;
  if( !plugins.Load( argv[ 1 ] ) )
  {
    std::cerr << "Failed to load plugins." << std::endl;
    return( 1 );

  } // fi

  // Create objects
  typedef cpPlugins::Interface::ProcessObject TProcessObject;
  typedef cpPlugins::Interface::DataObject    TDataObject;
  typedef cpPlugins::Interface::Parameters    TParameters;
  cpPlugins::Interface::ProcessObject::Pointer reader, writer, otsu;
  reader = plugins.CreateProcessObject( "cpPlugins::ImageReader" );
  writer = plugins.CreateProcessObject( "cpPlugins::ImageWriter" );
  otsu = plugins.CreateProcessObject( "cpPlugins::OtsuThresholdImageFilter" );
  if( reader.IsNull( ) || writer.IsNull( ) || otsu.IsNull( ) )
  {
    std::cerr << "No suitable objects found in plugins." << std::endl;
    return( 1 );

  } // fi

  // Configure reader
  TParameters reader_params = reader->GetDefaultParameters( );
  for( int i = 2; i < argc - 1; ++i )
    reader_params.AddValueToStringList( "FileNames", argv[ i ] );
  reader->SetParameters( reader_params );

  // Configure otsu
  TParameters otsu_params = otsu->GetDefaultParameters( );
  otsu_params.SetValueAsUint( "NumberOfHistogramBins", 100 );
  otsu_params.SetValueAsReal( "InsideValue", 255 );
  otsu_params.SetValueAsReal( "OutsideValue", 0 );
  otsu->SetParameters( otsu_params );

  // Configure writer
  TParameters writer_params = writer->GetDefaultParameters( );
  writer_params.SetValueAsString( "FileName", argv[ argc - 1 ] );
  writer->SetParameters( writer_params );

  // Connect pipeline
  otsu->SetInput( 0, reader->GetOutput< TDataObject >( 0 ) );
  writer->SetInput( 0, otsu->GetOutput< TDataObject >( 0 ) );

  // Execute pipeline
  std::string err = writer->Update( );
  if( err != "" )
  {
    std::cerr << "ERROR: " << err << std::endl;
    return( 1 );

  } // fi
  return( 0 );
}

// eof - $RCSfile$