/*
 * Copyright (C) 2005-2020 Centre National d'Etudes Spatiales (CNES)
 *
 * This file is part of Orfeo Toolbox
 *
 *     https://www.orfeo-toolbox.org/
 *
 * 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
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * 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 "itkMacro.h"

#include "otbWaterSqrtSpectralAngleImageFilter.h"
#include "otbImage.h"
#include "otbVectorImage.h"
#include "otbImageFileReader.h"
#include "otbImageFileWriter.h"

int otbWaterSqrtSpectralAngleImageFilter(int itkNotUsed(argc), char* argv[])
{
  const unsigned int Dimension = 2;
  typedef otb::VectorImage<double, Dimension> InputImageType;
  typedef otb::Image<double, Dimension>       OutputImageType;

  typedef otb::ImageFileReader<InputImageType>  ReaderType;
  typedef otb::ImageFileWriter<OutputImageType> WriterType;

  typedef otb::WaterSqrtSpectralAngleImageFilter<InputImageType, OutputImageType> WaterSqrtSpectralAngleImageFilterType;

  // Instantiating objects
  WaterSqrtSpectralAngleImageFilterType::Pointer filter = WaterSqrtSpectralAngleImageFilterType::New();
  
  ReaderType::Pointer                            reader = ReaderType::New();
  WriterType::Pointer                            writer = WriterType::New();

  const char* inputFilename  = argv[1];
  const char* outputFilename = argv[2];

  unsigned int blueChannel(::atoi(argv[3]));
  unsigned int greenChannel(::atoi(argv[4]));
  unsigned int redChannel(::atoi(argv[5]));
  unsigned int nirChannel(::atoi(argv[6]));

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

  filter->GetFunctor().SetBlueChannel(blueChannel);
  filter->GetFunctor().SetGreenChannel(greenChannel);
  filter->GetFunctor().SetRedChannel(redChannel);
  filter->GetFunctor().SetNIRChannel(nirChannel);

  filter->SetInput(reader->GetOutput());
  writer->SetInput(filter->GetOutput());
  
  writer->Update();
  return EXIT_SUCCESS;
}
