/*
 * Copyright (C) 2005-2019 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 otbWrapperMetaDataHelper_h
#define otbWrapperMetaDataHelper_h

#include "otbMetaDataKey.h"
#include "otbImageKeywordlist.h"
#include "otbVectorDataKeywordlist.h"
#include "itkMetaDataDictionary.h"
#include "OTBApplicationEngineExport.h"

namespace otb
{
namespace Wrapper
{

/**
 * \namespace MetaDataHelper
 *
 * \brief Contains small helper functions to manipulate itk::MetaDataDictionary
 *
 * These functions are only here to instanciate the different template function that
 * allow to get/set values in MetaDataDictionary.
 *
 */
namespace MetaDataHelper
{

enum class MDType
{
  String,
  Int,
  Double,
  GCP,
  Vector,
  ImageKWL,
  VectorDataKWL,
  BoolVector
};

OTBApplicationEngine_EXPORT MDType GetType(const std::string& val);

OTBApplicationEngine_EXPORT std::string GetString(const itk::MetaDataDictionary& dict, const std::string& key);
OTBApplicationEngine_EXPORT void SetString(itk::MetaDataDictionary& dict, const std::string& key, const std::string& val);

OTBApplicationEngine_EXPORT unsigned int GetInt(const itk::MetaDataDictionary& dict, const std::string& key);
OTBApplicationEngine_EXPORT void SetInt(itk::MetaDataDictionary& dict, const std::string& key, unsigned int val);

OTBApplicationEngine_EXPORT double GetDouble(const itk::MetaDataDictionary& dict, const std::string& key);
OTBApplicationEngine_EXPORT void SetDouble(itk::MetaDataDictionary& dict, const std::string& key, double val);

OTBApplicationEngine_EXPORT otb::OTB_GCP GetGCP(const itk::MetaDataDictionary& dict, const std::string& key);
OTBApplicationEngine_EXPORT void SetGCP(itk::MetaDataDictionary& dict, const std::string& key, const otb::OTB_GCP& val);

OTBApplicationEngine_EXPORT otb::MetaDataKey::VectorType GetVector(const itk::MetaDataDictionary& dict, const std::string& key);
OTBApplicationEngine_EXPORT void SetVector(itk::MetaDataDictionary& dict, const std::string& key, const otb::MetaDataKey::VectorType& val);

OTBApplicationEngine_EXPORT otb::ImageKeywordlist GetImageKWL(const itk::MetaDataDictionary& dict, const std::string& key);
OTBApplicationEngine_EXPORT void SetImageKWL(itk::MetaDataDictionary& dict, const std::string& key, const otb::ImageKeywordlist& val);

OTBApplicationEngine_EXPORT otb::VectorDataKeywordlist GetVectorDataKWL(const itk::MetaDataDictionary& dict, const std::string& key);
OTBApplicationEngine_EXPORT void SetVectorDataKWL(itk::MetaDataDictionary& dict, const std::string& key, const otb::VectorDataKeywordlist& val);

OTBApplicationEngine_EXPORT otb::MetaDataKey::BoolVectorType GetBoolVector(const itk::MetaDataDictionary& dict, const std::string& key);
OTBApplicationEngine_EXPORT void SetBoolVector(itk::MetaDataDictionary& dict, const std::string& key, const otb::MetaDataKey::BoolVectorType& val);

} // end of namespace MetaDataHelper

} // end of namespace Wrapper
} // end of namespace otb

#endif