/*
 * 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 "otbImageFileReader.h"
#include "otbImageFileWriter.h"
#include "otbImage.h"

#include "otbLmvmPanSharpeningFusionImageFilter.h"

int otbLmvmPanSharpeningFusionImageFilter(int itkNotUsed(argc), char* argv[])
{
  const char* panchro    = argv[1];
  const char* multispect = argv[2];
  const char* output     = argv[3];

  const unsigned int Dimension = 2;
  typedef double     PixelType;

  typedef otb::VectorImage<PixelType, Dimension> VectorImageType;
  typedef otb::Image<PixelType, Dimension>       PanchroImageType;
  typedef otb::ImageFileReader<VectorImageType>  VectorReaderType;
  typedef otb::ImageFileReader<PanchroImageType> ImageReaderType;
  typedef otb::ImageFileWriter<VectorImageType>  VectorImageWriterType;
  typedef otb::LmvmPanSharpeningFusionImageFilter<PanchroImageType, VectorImageType, VectorImageType, double> FilterType;

  VectorReaderType::Pointer      multiSpectReader = VectorReaderType::New();
  ImageReaderType::Pointer       panchroReader    = ImageReaderType::New();
  FilterType::Pointer            filter           = FilterType::New();
  VectorImageWriterType::Pointer writer           = VectorImageWriterType::New();

  multiSpectReader->SetFileName(multispect);
  panchroReader->SetFileName(panchro);

  PanchroImageType::SizeType radius;
  radius[0] = 5;
  radius[1] = 5;
  itk::Array<double> filterCoeffs;
  filterCoeffs.SetSize((2 * radius[0] + 1) * (2 * radius[1] + 1));

  //       double filterTmp[] = {
  //         0.00390625, 0.0078125, 0.0117188, 0.015625, 0.0117188, 0.0078125, 0.00390625,
  //         0.0078125, 0.015625, 0.0234375, 0.03125, 0.0234375, 0.015625, 0.0078125,
  //         0.0117188, 0.0234375, 0.0351562, 0.046875, 0.0351562, 0.0234375, 0.0117188,
  //         0.015625, 0.03125, 0.046875, 0.0625, 0.046875, 0.03125, 0.015625,
  //         0.0117188, 0.0234375, 0.0351562, 0.046875, 0.0351562, 0.0234375, 0.0117188,
  //         0.0078125, 0.015625, 0.0234375, 0.03125, 0.0234375, 0.015625, 0.0078125,
  //         0.00390625, 0.0078125, 0.0117188, 0.015625, 0.0117188, 0.0078125, 0.00390625  };
  //
  //       filterCoeffs.SetData(filterTmp);

  filterCoeffs.Fill(1);

  filter->SetXsInput(multiSpectReader->GetOutput());
  filter->SetPanInput(panchroReader->GetOutput());
  filter->SetRadius(radius);
  filter->SetFilter(filterCoeffs);
  writer->SetInput(filter->GetOutput());
  writer->SetFileName(output);
  writer->Update();

  return EXIT_SUCCESS;
}
