/*=========================================================================
 *
 *  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.
 *
 *=========================================================================*/

#include "itkJPEG2000ImageIOFactory.h"
#include "itkImageFileReader.h"
#include "itkImageFileWriter.h"
#include "itkRegionOfInterestImageFilter.h"
#include "itkTestingMacros.h"

int
itkJPEG2000ImageIORegionOfInterest(int argc, char * argv[])
{

  if (argc < 7)
  {
    std::cerr << "Missing parameters." << std::endl;
    std::cerr << "Usage: " << itkNameOfTestExecutableMacro(argv);
    std::cerr << " inputImageFile  outputImageFile " << std::endl;
    std::cerr << " startX startY sizeX sizeY " << std::endl;
    return EXIT_FAILURE;
  }

  //  Register the factory
  itk::JPEG2000ImageIOFactory::RegisterOneFactory();

  //  Image types are defined below.
  using InputPixelType = unsigned char;
  using OutputPixelType = unsigned char;
  constexpr unsigned int Dimension{ 2 };

  using InputImageType = itk::Image<InputPixelType, Dimension>;
  using OutputImageType = itk::Image<OutputPixelType, Dimension>;

  using ReaderType = itk::ImageFileReader<InputImageType>;
  using WriterType = itk::ImageFileWriter<OutputImageType>;

  //  The RegionOfInterestImageFilter type is instantiated using
  //  the input and output image types. A filter object is created with the
  //  New() method and assigned to a \doxygen{SmartPointer}.
  using FilterType = itk::RegionOfInterestImageFilter<InputImageType, OutputImageType>;
  auto filter = FilterType::New();

  //  The RegionOfInterestImageFilter requires a region to be
  //  defined by the user. The region is specified by an \doxygen{Index}
  //  indicating the pixel where the region starts and an \doxygen{Size}
  //  indicating how many pixels the region has along each dimension. In this
  //  example, the specification of the region is taken from the command line
  //  arguments (this example assumes that a 2D image is being processed).
  OutputImageType::IndexType     start{ std::stoi(argv[3]), std::stoi(argv[4]) };
  OutputImageType::SizeValueType start_x = std::stoi(argv[5]);
  OutputImageType::SizeValueType start_y = std::stoi(argv[6]);
  OutputImageType::SizeType      size{ start_x, start_y };

  OutputImageType::RegionType desiredRegion{ start, size };
  //  Then the region is passed to the filter using the
  //  SetRegionOfInterest() method.

  filter->SetRegionOfInterest(desiredRegion);

  auto reader = ReaderType::New();
  auto writer = WriterType::New();

  const std::string inputFilename = argv[1];
  const std::string outputFilename = argv[2];

  reader->SetFileName(inputFilename);
  writer->SetFileName(outputFilename);

  filter->SetInput(reader->GetOutput());
  writer->SetInput(filter->GetOutput());

  ITK_TRY_EXPECT_NO_EXCEPTION(writer->Update());


  return EXIT_SUCCESS;
}
