/*=========================================================================
 *
 *  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 "itkImageFileReader.h"
#include "itkImageFileWriter.h"
#include "itkImageRegionConstIterator.h"
#include "itkNumericTraits.h"
#include <iostream>
#include "itkTestingMacros.h"

using PixelType = unsigned long long;
using ImageType = itk::Image<PixelType, 3>;

int
verifyContent(ImageType::Pointer image)
{
  itk::ImageRegionConstIterator<ImageType> it(image, image->GetBufferedRegion());
  unsigned long long                       imageSize = 4 * 3 * 2;
  unsigned long long                       value = 1;
  while (!it.IsAtEnd() && value <= imageSize)
  {
    if (value == imageSize)
    {
      // last pixel is maximum 64-bit value
      value = itk::NumericTraits<PixelType>::max();
    }

    if (it.Get() != value)
    {
      std::cerr << "Failure reading value " << value << ". Instead got: " << it.Get() << std::endl;
      return EXIT_FAILURE;
    }

    ++it;
    ++value;
  }
  return EXIT_SUCCESS;
}

int
itk64bitTest(int argc, char * argv[])
{
  if (argc < 3)
  {
    std::cerr << "Invocation syntax:\n\t" << itkNameOfTestExecutableMacro(argv);
    std::cerr << " Test64bit.nrrd Test64bit.mha" << std::endl;
    return EXIT_FAILURE;
  }

  int returnValue = EXIT_SUCCESS;
  using ReaderType = itk::ImageFileReader<ImageType>;
  auto reader = ReaderType::New();
  reader->SetFileName(argv[1]); // Input/Test64bit.nrrd

  try
  {
    std::cout << "Reading " << argv[1] << std::endl;
    reader->Update();
    ImageType::Pointer image = reader->GetOutput();
    returnValue += verifyContent(image);

    std::cout << "Writing " << argv[2] << std::endl;
    using WriterType = itk::ImageFileWriter<ImageType>;
    auto writer = WriterType::New();
    writer->SetInput(image);
    writer->SetFileName(argv[2]);
    writer->Update();

    std::cout << "Reading " << argv[2] << std::endl;
    reader->SetFileName(argv[2]);
    reader->Update();
    ImageType::Pointer image2 = reader->GetOutput();
    returnValue += verifyContent(image2);
  }
  catch (const itk::ExceptionObject & exc)
  {
    std::cerr << exc;
    return EXIT_FAILURE;
  }

  if (returnValue)
  {
    std::cout << "Test FAILED" << std::endl;
  }
  else
  {
    std::cout << "Test PASSED" << std::endl;
  }
  return returnValue;
}
