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/**
    @file

    This file declares the interface of set GIS operations. These are
    set operations that compute a geometry given two input geometries.
*/

#ifndef SQL_GIS_SETOPS_H_INCLUDED
#define SQL_GIS_SETOPS_H_INCLUDED

#include <memory>  // std::unique_ptr

#include "sql/dd/types/spatial_reference_system.h"  // dd::Spatial_reference_system
#include "sql/gis/geometries.h"

namespace gis {

/// Finds the difference between two geometries.
///
/// @param[in] srs The spatial reference system.
/// @param[in] g1 Input geometry.
/// @param[in] g2 Input geometry.
/// @param[in] func_name Function name used in error reporting.
/// @param[out] result Result.
///
/// @retval false Success.
/// @retval true An error has occurred. The error has been reported with
/// my_error().
bool difference(const dd::Spatial_reference_system *srs, const Geometry *g1,
                const Geometry *g2, const char *func_name,
                std::unique_ptr<Geometry> *result) noexcept;

/// Finds the symdifference between two geometries.
///
/// @param[in] srs The spatial reference system.
/// @param[in] g1 Input geometry.
/// @param[in] g2 Input geometry.
/// @param[in] func_name Function name used in error reporting.
/// @param[out] result Result.
///
/// @retval false Success.
/// @retval true An error has occurred. The error has been reported with
/// my_error().
bool symdifference(const dd::Spatial_reference_system *srs, const Geometry *g1,
                   const Geometry *g2, const char *func_name,
                   std::unique_ptr<Geometry> *result) noexcept;

/// Finds the union of two geometries.
///
/// @param[in] srs The spatial reference system.
/// @param[in] g1 Input geometry.
/// @param[in] g2 Input geometry.
/// @param[in] func_name Function name used in error reporting.
/// @param[out] result Result. Invalid if `result_null`.
/// @param[out] result_null Whether result is `NULL` instead of `result`.
///
/// @retval false Success.
/// @retval true An error has occurred. The error has been reported with
/// my_error().
bool union_(const dd::Spatial_reference_system *srs, const Geometry *g1,
            const Geometry *g2, const char *func_name,
            std::unique_ptr<Geometry> *result, bool *result_null) noexcept;

/// Finds the intersection between two geometries.
///
/// @param[in] srs The spatial reference system.
/// @param[in] g1 Input geometry.
/// @param[in] g2 Input geometry.
/// @param[in] func_name Function name used in error reporting.
/// @param[out] result Result.
///
/// @retval false Success.
/// @retval true An error has occurred. The error has been reported with
/// my_error().
bool intersection(const dd::Spatial_reference_system *srs, const Geometry *g1,
                  const Geometry *g2, const char *func_name,
                  std::unique_ptr<Geometry> *result) noexcept;

}  // namespace gis

#endif  // SQL_GIS_SETOPS_H_INCLUDED