/*=========================================================================
 *
 *  Copyright NumFOCUS
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *         https://www.apache.org/licenses/LICENSE-2.0.txt
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 *=========================================================================*/

/**
 * This example program shows how to read/write the ITK object
 * itk::ParticleSwarmOptimizer using the traditional SAX-based API and the
 * newly introduced DOM-based API.
 *
 * The program reads a PSO XML file (arg1) using both DOM-based and SAX-based
 * readers, then writes out the loaded PSO object using both DOM-based (arg2)
 * and SAX-based (arg3) writers.
 *
 * Please see [ITK_HOME]/Testing/Data/InputXML/test.pso.xml for an example XML
 * file for the PSO object.
 */

#include "itkParticleSwarmOptimizer.h"

#include "itkParticleSwarmOptimizerSAXReader.h"
#include "itkParticleSwarmOptimizerSAXWriter.h"

#include "itkParticleSwarmOptimizerDOMReader.h"
#include "itkParticleSwarmOptimizerDOMWriter.h"

#include <iostream>
#include "itkMacro.h"

int
main(int argc, char * argv[])
{
  if (argc < 4)
  {
    std::cerr
      << "arguments expected: test-input.pso.xml test-output-DOM.pso.xml "
         "test-output-SAX.pso.xml"
      << std::endl;
    return EXIT_FAILURE;
  }

  try
  {
    // use DOM reader/writer
    {
      itk::ParticleSwarmOptimizer::Pointer optimizer;
      // read the optimizer from an XML file
      auto reader = itk::ParticleSwarmOptimizerDOMReader::New();
      reader->SetFileName(argv[1]);
      reader->Update();
      optimizer = reader->GetOutput();
      // write a DOM object to an XML file
      auto writer = itk::ParticleSwarmOptimizerDOMWriter::New();
      writer->SetInput(optimizer);
      writer->SetFileName(argv[2]);
      writer->Update();
    }

    // use SAX reader/writer
    {
      auto optimizer = itk::ParticleSwarmOptimizer::New();
      // read the optimizer from an XML file
      auto reader = itk::ParticleSwarmOptimizerSAXReader::New();
      reader->SetOutputObject(
        optimizer);                 // method defined in itk::XMLReader<T>
      reader->SetFilename(argv[1]); // method defined in itk::XMLReaderBase
      reader->ReadFile();
      // write a DOM object to an XML file
      auto writer = itk::ParticleSwarmOptimizerSAXWriter::New();
      writer->SetObject(optimizer); // method defined in itk::XMLWriterBase
      writer->SetFilename(argv[3]); // method defined in itk::XMLWriterBase
      writer->WriteFile();
    }
  }
  catch (const itk::ExceptionObject & eo)
  {
    eo.Print(std::cerr);
    return EXIT_FAILURE;
  }
  catch (...)
  {
    std::cerr << "Unknown exception caught!" << std::endl;
    return EXIT_FAILURE;
  }

  return EXIT_SUCCESS;
}
