/*
 * 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.
 */

#ifndef otbOGRDataSourceToLabelImageFilter_h
#define otbOGRDataSourceToLabelImageFilter_h

#include "itkImageToImageFilter.h"
#include "otbMacro.h"


#include "gdal.h"
#include "gdal_alg.h"
#include "otbOGRDataSourceWrapper.h"
#include <string>

namespace otb
{

/** \class OGRDataSourceToLabelImageFilter
 *  \brief Burn geometries from the specified VectorData into raster
 *
 *  This class handles burning several input \c OGRDataSource into the
 *  output raster.  It has two different modes:
 *  - either the burn values are extracted from a field set by
 *    the user (default field is DN). This is the default behaviour,
 *  - or the burn values are made of foreground (when inside
 *    geometries) and background (outside geometries) values, which can
 *    be set by the user. One can set this behaviour by disable the
 *    BurnAttributeMode using the BurnAttributeModeOff() method.
 *
 *  Please note that the background value is also used in
 *  BurnAttributeModeOn() to fill areas where there are no geometries.
 *
 *  Setting the output raster information can be done in two ways by:
 *    - Setting the Origin/Size/Spacing of the output image
 *    - Using an existing image as support via SetOutputParametersFromImage(ImageBase)
 *
 *
 * \ingroup OTBConversion
 */
template <class TOutputImage>
class ITK_EXPORT OGRDataSourceToLabelImageFilter : public itk::ImageSource<TOutputImage>
{
public:
  /** Standard class typedefs */
  typedef OGRDataSourceToLabelImageFilter Self;
  typedef itk::ImageSource<TOutputImage>  Superclass;
  typedef itk::SmartPointer<Self>         Pointer;
  typedef itk::SmartPointer<const Self>   ConstPointer;

  /** Run-time type information (and related methods). */
  itkTypeMacro(OGRDataSourceToLabelImageFilter, itk::ImageSource);

  /** Method for creation through the object factory. */
  itkNewMacro(Self);

  typedef TOutputImage                                OutputImageType;
  typedef typename OutputImageType::Pointer           OutputImagePointer;
  typedef typename OutputImageType::SizeType          OutputSizeType;
  typedef typename OutputImageType::IndexType         OutputIndexType;
  typedef typename OutputImageType::SpacingType       OutputSpacingType;
  typedef typename OutputImageType::PointType         OutputOriginType;
  typedef typename OutputImageType::RegionType        OutputImageRegionType;
  typedef typename OutputImageType::PixelType         OutputImagePixelType;
  typedef typename OutputImageType::InternalPixelType OutputImageInternalPixelType;

  /** VectorData typedefs*/
  typedef ogr::DataSource                     OGRDataSourceType;
  typedef typename OGRDataSourceType::Pointer OGRDataSourcePointerType;
  typedef ogr::Layer                          OGRLayerType;

  typedef itk::ImageBase<OutputImageType::ImageDimension> ImageBaseType;

  /** Get Nth input \c OGRDataSource */
  const OGRDataSourceType* GetInput(unsigned int idx);

  /** Method for adding a \c OGRDataSource to rasterize  */
  virtual void AddOGRDataSource(const OGRDataSourceType* ds);

  /** Set the size of the output image. */
  itkSetMacro(OutputSize, OutputSizeType);

  /** Get the size of the output image. */
  itkGetConstReferenceMacro(OutputSize, OutputSizeType);

  /** Set the origin of the output image.
   * \sa GetOrigin()
   */
  itkSetMacro(OutputOrigin, OutputOriginType);
  virtual void SetOutputOrigin(const double origin[2]);
  virtual void SetOutputOrigin(const float origin[2]);

  itkGetConstReferenceMacro(OutputOrigin, OutputOriginType);

  /** Set the spacing (size of a pixel) of the output image.
  * \sa GetSignedSpacing()
  */
  virtual void SetOutputSpacing(const OutputSpacingType& spacing);
  virtual void SetOutputSpacing(const double spacing[2]);
  virtual void SetOutputSpacing(const float spacing[2]);

  /** Set/Get Output Projection Ref */
  itkSetStringMacro(OutputProjectionRef);
  itkGetStringMacro(OutputProjectionRef);

  /** Set the attribute field on the \c OGRFeature to be used as burn value in the output image*/
  itkSetStringMacro(BurnAttribute);
  itkGetStringMacro(BurnAttribute);

  /** Set/Get the background value */
  itkSetMacro(BackgroundValue, OutputImageInternalPixelType);
  itkGetConstReferenceMacro(BackgroundValue, OutputImageInternalPixelType);

  /** Set/Get the foreground value */
  itkSetMacro(ForegroundValue, OutputImageInternalPixelType);
  itkGetConstReferenceMacro(ForegroundValue, OutputImageInternalPixelType);

  /** Set/Get the BurnAttributeMode flag */
  itkSetMacro(BurnAttributeMode, bool);
  itkGetConstReferenceMacro(BurnAttributeMode, bool);
  itkBooleanMacro(BurnAttributeMode);

  /** Set/Get the AllTouchedMode flag */
  itkSetMacro(AllTouchedMode, bool);
  itkGetConstReferenceMacro(AllTouchedMode, bool);
  itkBooleanMacro(AllTouchedMode);

  /** Useful to set the output parameters from an existing image*/
  void SetOutputParametersFromImage(const ImageBaseType* image);

protected:
  void GenerateData() override;

  OGRDataSourceToLabelImageFilter();
  ~OGRDataSourceToLabelImageFilter() override
  {
  }

  void GenerateOutputInformation() override;

  void PrintSelf(std::ostream& os, itk::Indent indent) const override;

private:
  OGRDataSourceToLabelImageFilter(const Self&) = delete;
  void operator=(const Self&) = delete;

  std::vector<OGRLayerH> m_SrcDataSetLayers;
  std::vector<int>       m_BandsToBurn;

  // Field used to extract the burn value
  std::string m_BurnAttribute;

  // Output params
  std::string                  m_OutputProjectionRef;
  OutputSpacingType            m_OutputSpacing;
  OutputOriginType             m_OutputOrigin;
  OutputSizeType               m_OutputSize;
  OutputIndexType              m_OutputStartIndex;
  OutputImageInternalPixelType m_BackgroundValue;
  OutputImageInternalPixelType m_ForegroundValue;
  bool                         m_BurnAttributeMode;
  bool                         m_AllTouchedMode;
}; // end of class VectorDataToLabelImageFilter

} // end of namespace otb


#ifndef OTB_MANUAL_INSTANTIATION
#include "otbOGRDataSourceToLabelImageFilter.hxx"
#endif

#endif
