/*=========================================================================
 *
 *  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 "itkTileImageFilter.h"
#include "itkImageFileReader.h"
#include "itkImageSeriesWriter.h"
#include "itkSimpleFilterWatcher.h"
#include "itkTestingMacros.h"

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

  using PixelType = itk::RGBPixel<unsigned char>;
  enum
  {
    InputImageDimension = 2
  };
  enum
  {
    OutputImageDimension = 3
  };

  using InputImageType = itk::Image<PixelType, InputImageDimension>;
  using OutputImageType = itk::Image<PixelType, OutputImageDimension>;
  using ImageReaderType = itk::ImageFileReader<InputImageType>;
  using TilerType = itk::TileImageFilter<InputImageType, OutputImageType>;
  using WriterType = itk::ImageSeriesWriter<OutputImageType, InputImageType>;

  if (argc < 6)
  {
    std::cerr << "Usage: " << std::endl;
    std::cerr << itkNameOfTestExecutableMacro(argv) << "  iSize jSize kSize input1 input2 ... inputn output"
              << std::endl;
    return EXIT_FAILURE;
  }

  itk::FixedArray<unsigned int, 3> layout;
  layout[0] = std::stoi(argv[1]);
  layout[1] = std::stoi(argv[2]);
  layout[2] = std::stoi(argv[3]);

  // Tile the input images
  auto                           tiler = TilerType::New();
  const itk::SimpleFilterWatcher tileWatcher(tiler, "Tiler");
  int                            f = 0;
  for (int i = 4; i < argc - 1; ++i)
  {
    auto reader = ImageReaderType::New();
    reader->SetFileName(argv[i]);
    reader->Update();
    tiler->SetInput(f++, reader->GetOutput());
  }
  tiler->SetLayout(layout);
  unsigned char                      yellow[3] = { 255, 255, 127 };
  const itk::RGBPixel<unsigned char> fillPixel = yellow;
  tiler->SetDefaultPixelValue(fillPixel);
  tiler->Update();
  tiler->GetOutput()->Print(std::cout);

  tiler->Print(std::cout);

  auto writer = WriterType::New();

  writer->SetSeriesFormat(argv[argc - 1]);

  ITK_TRY_EXPECT_NO_EXCEPTION(writer->SetInput(tiler->GetOutput()));

  ITK_TRY_EXPECT_NO_EXCEPTION(writer->Update());


  std::cout << "Test passed." << std::endl;
  return EXIT_SUCCESS;
}
