// Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License, version 2.0,
// as published by the Free Software Foundation.
//
// This program is also distributed with certain software (including
// but not limited to OpenSSL) that is licensed under separate terms,
// as designated in a particular file or component or in included license
// documentation.  The authors of MySQL hereby grant you an additional
// permission to link the program and your derivative works with the
// separately licensed software that they have included with MySQL.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License, version 2.0, for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA.

/// @file
///
/// This file implements the disjoint functor and function.

#include <boost/geometry.hpp>

#include "sql/dd/types/spatial_reference_system.h"  // dd::Spatial_reference_system
#include "sql/gis/box.h"
#include "sql/gis/box_traits.h"
#include "sql/gis/disjoint_functor.h"
#include "sql/gis/geometries.h"
#include "sql/gis/geometries_traits.h"
#include "sql/gis/mbr_utils.h"
#include "sql/gis/relops.h"
#include "sql/sql_exception_handler.h"  // handle_gis_exception

namespace bg = boost::geometry;

namespace gis {

/// Apply a Disjoint functor to two geometries, which both may be geometry
/// collections, and return the boolean result of the functor applied on each
/// combination of elements in the collections.
///
/// @tparam GC Coordinate specific gometry collection type.
///
/// @param f Functor to apply.
/// @param g1 First geometry.
/// @param g2 Second geometry.
///
/// @retval true g1 is disjoint from g2.
/// @retval false g1 isn't disjoint from g2.
template <typename GC>
static bool geometry_collection_apply_disjoint(const Disjoint &f,
                                               const Geometry *g1,
                                               const Geometry *g2) {
  if (g1->type() == Geometry_type::kGeometrycollection) {
    const auto gc1 = down_cast<const GC *>(g1);
    for (const auto g1_i : *gc1) {
      if (!geometry_collection_apply_disjoint<GC>(f, g1_i, g2)) return false;
    }
  } else if (g2->type() == Geometry_type::kGeometrycollection) {
    const auto gc2 = down_cast<const GC *>(g2);
    for (const auto g2_j : *gc2) {
      if (!geometry_collection_apply_disjoint<GC>(f, g1, g2_j)) return false;
    }
  } else {
    return f(g1, g2);
  }

  return true;
}

Disjoint::Disjoint(double semi_major, double semi_minor)
    : m_geographic_pl_pa_strategy(
          bg::srs::spheroid<double>(semi_major, semi_minor)),
      m_geographic_ll_la_aa_strategy(
          bg::srs::spheroid<double>(semi_major, semi_minor)) {}

bool Disjoint::operator()(const Geometry *g1, const Geometry *g2) const {
  return apply(*this, g1, g2);
}

bool Disjoint::operator()(const Box *b1, const Box *b2) const {
  DBUG_ASSERT(b1->coordinate_system() == b2->coordinate_system());
  switch (b1->coordinate_system()) {
    case Coordinate_system::kCartesian:
      return eval(down_cast<const Cartesian_box *>(b1),
                  down_cast<const Cartesian_box *>(b2));
    case Coordinate_system::kGeographic:
      return eval(down_cast<const Geographic_box *>(b1),
                  down_cast<const Geographic_box *>(b2));
  }

  DBUG_ASSERT(false);
  return false;
}

bool Disjoint::eval(const Geometry *g1, const Geometry *g2) const {
  // All parameter type combinations have been implemented.
  DBUG_ASSERT(false);
  throw not_implemented_exception::for_non_projected(*g1, *g2);
}

//////////////////////////////////////////////////////////////////////////////

// disjoint(Cartesian_point, *)

bool Disjoint::eval(const Cartesian_point *g1,
                    const Cartesian_point *g2) const {
  return bg::disjoint(*g1, *g2);
}

bool Disjoint::eval(const Cartesian_point *g1,
                    const Cartesian_linestring *g2) const {
  return bg::disjoint(*g1, *g2);
}

bool Disjoint::eval(const Cartesian_point *g1,
                    const Cartesian_polygon *g2) const {
  return bg::disjoint(*g1, *g2);
}

bool Disjoint::eval(const Cartesian_point *g1,
                    const Cartesian_geometrycollection *g2) const {
  return geometry_collection_apply_disjoint<Cartesian_geometrycollection>(
      *this, g1, g2);
}

bool Disjoint::eval(const Cartesian_point *g1,
                    const Cartesian_multipoint *g2) const {
  return bg::disjoint(*g1, *g2);
}

bool Disjoint::eval(const Cartesian_point *g1,
                    const Cartesian_multilinestring *g2) const {
  return bg::disjoint(*g1, *g2);
}

bool Disjoint::eval(const Cartesian_point *g1,
                    const Cartesian_multipolygon *g2) const {
  return bg::disjoint(*g1, *g2);
}

//////////////////////////////////////////////////////////////////////////////

// disjoint(Cartesian_linestring, *)

bool Disjoint::eval(const Cartesian_linestring *g1,
                    const Cartesian_point *g2) const {
  return bg::disjoint(*g1, *g2);
}

bool Disjoint::eval(const Cartesian_linestring *g1,
                    const Cartesian_linestring *g2) const {
  return bg::disjoint(*g1, *g2);
}

bool Disjoint::eval(const Cartesian_linestring *g1,
                    const Cartesian_polygon *g2) const {
  return bg::disjoint(*g1, *g2);
}

bool Disjoint::eval(const Cartesian_linestring *g1,
                    const Cartesian_geometrycollection *g2) const {
  return geometry_collection_apply_disjoint<Cartesian_geometrycollection>(
      *this, g1, g2);
}

bool Disjoint::eval(const Cartesian_linestring *g1,
                    const Cartesian_multipoint *g2) const {
  return bg::disjoint(*g1, *g2);
}

bool Disjoint::eval(const Cartesian_linestring *g1,
                    const Cartesian_multilinestring *g2) const {
  return bg::disjoint(*g1, *g2);
}

bool Disjoint::eval(const Cartesian_linestring *g1,
                    const Cartesian_multipolygon *g2) const {
  return bg::disjoint(*g1, *g2);
}

//////////////////////////////////////////////////////////////////////////////

// disjoint(Cartesian_polygon, *)

bool Disjoint::eval(const Cartesian_polygon *g1,
                    const Cartesian_point *g2) const {
  return bg::disjoint(*g1, *g2);
}

bool Disjoint::eval(const Cartesian_polygon *g1,
                    const Cartesian_linestring *g2) const {
  return bg::disjoint(*g1, *g2);
}

bool Disjoint::eval(const Cartesian_polygon *g1,
                    const Cartesian_polygon *g2) const {
  return bg::disjoint(*g1, *g2);
}

bool Disjoint::eval(const Cartesian_polygon *g1,
                    const Cartesian_geometrycollection *g2) const {
  return geometry_collection_apply_disjoint<Cartesian_geometrycollection>(
      *this, g1, g2);
}

bool Disjoint::eval(const Cartesian_polygon *g1,
                    const Cartesian_multipoint *g2) const {
  return eval(g2, g1);
}

bool Disjoint::eval(const Cartesian_polygon *g1,
                    const Cartesian_multilinestring *g2) const {
  return bg::disjoint(*g1, *g2);
}

bool Disjoint::eval(const Cartesian_polygon *g1,
                    const Cartesian_multipolygon *g2) const {
  return bg::disjoint(*g1, *g2);
}

//////////////////////////////////////////////////////////////////////////////

// disjoint(Cartesian_geometrycollection, *)

bool Disjoint::eval(const Cartesian_geometrycollection *g1,
                    const Geometry *g2) const {
  return geometry_collection_apply_disjoint<Cartesian_geometrycollection>(
      *this, g1, g2);
}

//////////////////////////////////////////////////////////////////////////////

// disjoint(Cartesian_multipoint, *)

bool Disjoint::eval(const Cartesian_multipoint *g1,
                    const Cartesian_point *g2) const {
  return bg::disjoint(*g1, *g2);
}

bool Disjoint::eval(const Cartesian_multipoint *g1,
                    const Cartesian_linestring *g2) const {
  return bg::disjoint(*g1, *g2);
}

bool Disjoint::eval(const Cartesian_multipoint *g1,
                    const Cartesian_polygon *g2) const {
  // All points in g1 must be disjoint from g2.
  for (auto &pt : *g1) {
    if (!bg::disjoint(pt, *g2)) return false;
  }
  return true;
}

bool Disjoint::eval(const Cartesian_multipoint *g1,
                    const Cartesian_geometrycollection *g2) const {
  return geometry_collection_apply_disjoint<Cartesian_geometrycollection>(
      *this, g1, g2);
}

bool Disjoint::eval(const Cartesian_multipoint *g1,
                    const Cartesian_multipoint *g2) const {
  return bg::disjoint(*g1, *g2);
}

bool Disjoint::eval(const Cartesian_multipoint *g1,
                    const Cartesian_multilinestring *g2) const {
  return bg::disjoint(*g1, *g2);
}

bool Disjoint::eval(const Cartesian_multipoint *g1,
                    const Cartesian_multipolygon *g2) const {
  // All points in g1 must be disjoint from g2.
  for (auto &pt : *g1) {
    if (!bg::disjoint(pt, *g2)) return false;
  }
  return true;
}

//////////////////////////////////////////////////////////////////////////////

// disjoint(Cartesian_multilinestring, *)

bool Disjoint::eval(const Cartesian_multilinestring *g1,
                    const Cartesian_point *g2) const {
  return bg::disjoint(*g1, *g2);
}

bool Disjoint::eval(const Cartesian_multilinestring *g1,
                    const Cartesian_linestring *g2) const {
  return bg::disjoint(*g1, *g2);
}

bool Disjoint::eval(const Cartesian_multilinestring *g1,
                    const Cartesian_polygon *g2) const {
  return bg::disjoint(*g1, *g2);
}

bool Disjoint::eval(const Cartesian_multilinestring *g1,
                    const Cartesian_geometrycollection *g2) const {
  return geometry_collection_apply_disjoint<Cartesian_geometrycollection>(
      *this, g1, g2);
}

bool Disjoint::eval(const Cartesian_multilinestring *g1,
                    const Cartesian_multipoint *g2) const {
  return bg::disjoint(*g1, *g2);
}

bool Disjoint::eval(const Cartesian_multilinestring *g1,
                    const Cartesian_multilinestring *g2) const {
  return bg::disjoint(*g1, *g2);
}

bool Disjoint::eval(const Cartesian_multilinestring *g1,
                    const Cartesian_multipolygon *g2) const {
  return bg::disjoint(*g1, *g2);
}

//////////////////////////////////////////////////////////////////////////////

// disjoint(Cartesian_multipolygon, *)

bool Disjoint::eval(const Cartesian_multipolygon *g1,
                    const Cartesian_point *g2) const {
  return bg::disjoint(*g1, *g2);
}

bool Disjoint::eval(const Cartesian_multipolygon *g1,
                    const Cartesian_linestring *g2) const {
  return bg::disjoint(*g1, *g2);
}

bool Disjoint::eval(const Cartesian_multipolygon *g1,
                    const Cartesian_polygon *g2) const {
  return bg::disjoint(*g1, *g2);
}

bool Disjoint::eval(const Cartesian_multipolygon *g1,
                    const Cartesian_geometrycollection *g2) const {
  return geometry_collection_apply_disjoint<Cartesian_geometrycollection>(
      *this, g1, g2);
}

bool Disjoint::eval(const Cartesian_multipolygon *g1,
                    const Cartesian_multipoint *g2) const {
  return eval(g2, g1);
}

bool Disjoint::eval(const Cartesian_multipolygon *g1,
                    const Cartesian_multilinestring *g2) const {
  return bg::disjoint(*g1, *g2);
}

bool Disjoint::eval(const Cartesian_multipolygon *g1,
                    const Cartesian_multipolygon *g2) const {
  return bg::disjoint(*g1, *g2);
}

//////////////////////////////////////////////////////////////////////////////

// disjoint(Geographic_point, *)

bool Disjoint::eval(const Geographic_point *g1,
                    const Geographic_point *g2) const {
  // Default strategy is OK. P/P computations do not depend on shape of
  // ellipsoid.
  return bg::disjoint(*g1, *g2);
}

bool Disjoint::eval(const Geographic_point *g1,
                    const Geographic_linestring *g2) const {
  return bg::disjoint(*g1, *g2, m_geographic_pl_pa_strategy);
}

bool Disjoint::eval(const Geographic_point *g1,
                    const Geographic_polygon *g2) const {
  return bg::disjoint(*g1, *g2, m_geographic_pl_pa_strategy);
}

bool Disjoint::eval(const Geographic_point *g1,
                    const Geographic_geometrycollection *g2) const {
  return geometry_collection_apply_disjoint<Geographic_geometrycollection>(
      *this, g1, g2);
}

bool Disjoint::eval(const Geographic_point *g1,
                    const Geographic_multipoint *g2) const {
  // Default strategy is OK. P/P computations do not depend on shape of
  // ellipsoid.
  return bg::disjoint(*g1, *g2);
}

bool Disjoint::eval(const Geographic_point *g1,
                    const Geographic_multilinestring *g2) const {
  return bg::disjoint(*g1, *g2, m_geographic_pl_pa_strategy);
}

bool Disjoint::eval(const Geographic_point *g1,
                    const Geographic_multipolygon *g2) const {
  return bg::disjoint(*g1, *g2, m_geographic_pl_pa_strategy);
}

//////////////////////////////////////////////////////////////////////////////

// disjoint(Geographic_linestring, *)

bool Disjoint::eval(const Geographic_linestring *g1,
                    const Geographic_point *g2) const {
  return bg::disjoint(*g1, *g2, m_geographic_pl_pa_strategy);
}

bool Disjoint::eval(const Geographic_linestring *g1,
                    const Geographic_linestring *g2) const {
  return bg::disjoint(*g1, *g2, m_geographic_ll_la_aa_strategy);
}

bool Disjoint::eval(const Geographic_linestring *g1,
                    const Geographic_polygon *g2) const {
  return bg::disjoint(*g1, *g2, m_geographic_ll_la_aa_strategy);
}

bool Disjoint::eval(const Geographic_linestring *g1,
                    const Geographic_geometrycollection *g2) const {
  return geometry_collection_apply_disjoint<Geographic_geometrycollection>(
      *this, g1, g2);
}

bool Disjoint::eval(const Geographic_linestring *g1,
                    const Geographic_multipoint *g2) const {
  return bg::disjoint(*g1, *g2, m_geographic_pl_pa_strategy);
}

bool Disjoint::eval(const Geographic_linestring *g1,
                    const Geographic_multilinestring *g2) const {
  return bg::disjoint(*g1, *g2, m_geographic_ll_la_aa_strategy);
}

bool Disjoint::eval(const Geographic_linestring *g1,
                    const Geographic_multipolygon *g2) const {
  return bg::disjoint(*g1, *g2, m_geographic_ll_la_aa_strategy);
}

//////////////////////////////////////////////////////////////////////////////

// disjoint(Geographic_polygon, *)

bool Disjoint::eval(const Geographic_polygon *g1,
                    const Geographic_point *g2) const {
  return bg::disjoint(*g1, *g2, m_geographic_pl_pa_strategy);
}

bool Disjoint::eval(const Geographic_polygon *g1,
                    const Geographic_linestring *g2) const {
  return bg::disjoint(*g1, *g2, m_geographic_ll_la_aa_strategy);
}

bool Disjoint::eval(const Geographic_polygon *g1,
                    const Geographic_polygon *g2) const {
  return bg::disjoint(*g1, *g2, m_geographic_ll_la_aa_strategy);
}

bool Disjoint::eval(const Geographic_polygon *g1,
                    const Geographic_geometrycollection *g2) const {
  return geometry_collection_apply_disjoint<Geographic_geometrycollection>(
      *this, g1, g2);
}

bool Disjoint::eval(const Geographic_polygon *g1,
                    const Geographic_multipoint *g2) const {
  return eval(g2, g1);
}

bool Disjoint::eval(const Geographic_polygon *g1,
                    const Geographic_multilinestring *g2) const {
  return bg::disjoint(*g1, *g2, m_geographic_ll_la_aa_strategy);
}

bool Disjoint::eval(const Geographic_polygon *g1,
                    const Geographic_multipolygon *g2) const {
  return bg::disjoint(*g1, *g2, m_geographic_ll_la_aa_strategy);
}

//////////////////////////////////////////////////////////////////////////////

// disjoint(Geographic_geometrycollection, *)

bool Disjoint::eval(const Geographic_geometrycollection *g1,
                    const Geometry *g2) const {
  return geometry_collection_apply_disjoint<Geographic_geometrycollection>(
      *this, g1, g2);
}

//////////////////////////////////////////////////////////////////////////////

// disjoint(Geographic_multipoint, *)

bool Disjoint::eval(const Geographic_multipoint *g1,
                    const Geographic_point *g2) const {
  // Default strategy is OK. P/P computations do not depend on shape of
  // ellipsoid.
  return bg::disjoint(*g1, *g2);
}

bool Disjoint::eval(const Geographic_multipoint *g1,
                    const Geographic_linestring *g2) const {
  return bg::disjoint(*g1, *g2, m_geographic_pl_pa_strategy);
}

bool Disjoint::eval(const Geographic_multipoint *g1,
                    const Geographic_polygon *g2) const {
  // All points in g1 must be disjoint from g2.
  for (auto &pt : *g1) {
    if (!bg::disjoint(pt, *g2, m_geographic_pl_pa_strategy)) return false;
  }
  return true;
}

bool Disjoint::eval(const Geographic_multipoint *g1,
                    const Geographic_geometrycollection *g2) const {
  return geometry_collection_apply_disjoint<Geographic_geometrycollection>(
      *this, g1, g2);
}

bool Disjoint::eval(const Geographic_multipoint *g1,
                    const Geographic_multipoint *g2) const {
  // Default strategy is OK. P/P computations do not depend on shape of
  // ellipsoid.
  return bg::disjoint(*g1, *g2);
}

bool Disjoint::eval(const Geographic_multipoint *g1,
                    const Geographic_multilinestring *g2) const {
  return bg::disjoint(*g1, *g2, m_geographic_pl_pa_strategy);
}

bool Disjoint::eval(const Geographic_multipoint *g1,
                    const Geographic_multipolygon *g2) const {
  // All points in g1 must be disjoint from g2.
  for (auto &pt : *g1) {
    if (!bg::disjoint(pt, *g2, m_geographic_pl_pa_strategy)) return false;
  }
  return true;
}

//////////////////////////////////////////////////////////////////////////////

// disjoint(Geographic_multilinestring, *)

bool Disjoint::eval(const Geographic_multilinestring *g1,
                    const Geographic_point *g2) const {
  return bg::disjoint(*g1, *g2, m_geographic_pl_pa_strategy);
}

bool Disjoint::eval(const Geographic_multilinestring *g1,
                    const Geographic_linestring *g2) const {
  return bg::disjoint(*g1, *g2, m_geographic_ll_la_aa_strategy);
}

bool Disjoint::eval(const Geographic_multilinestring *g1,
                    const Geographic_polygon *g2) const {
  return bg::disjoint(*g1, *g2, m_geographic_ll_la_aa_strategy);
}

bool Disjoint::eval(const Geographic_multilinestring *g1,
                    const Geographic_geometrycollection *g2) const {
  return geometry_collection_apply_disjoint<Geographic_geometrycollection>(
      *this, g1, g2);
}

bool Disjoint::eval(const Geographic_multilinestring *g1,
                    const Geographic_multipoint *g2) const {
  return bg::disjoint(*g1, *g2, m_geographic_pl_pa_strategy);
}

bool Disjoint::eval(const Geographic_multilinestring *g1,
                    const Geographic_multilinestring *g2) const {
  return bg::disjoint(*g1, *g2, m_geographic_ll_la_aa_strategy);
}

bool Disjoint::eval(const Geographic_multilinestring *g1,
                    const Geographic_multipolygon *g2) const {
  return bg::disjoint(*g1, *g2, m_geographic_ll_la_aa_strategy);
}

//////////////////////////////////////////////////////////////////////////////

// disjoint(Geographic_multipolygon, *)

bool Disjoint::eval(const Geographic_multipolygon *g1,
                    const Geographic_point *g2) const {
  return bg::disjoint(*g1, *g2, m_geographic_pl_pa_strategy);
}

bool Disjoint::eval(const Geographic_multipolygon *g1,
                    const Geographic_linestring *g2) const {
  return bg::disjoint(*g1, *g2, m_geographic_ll_la_aa_strategy);
}

bool Disjoint::eval(const Geographic_multipolygon *g1,
                    const Geographic_polygon *g2) const {
  return bg::disjoint(*g1, *g2, m_geographic_ll_la_aa_strategy);
}

bool Disjoint::eval(const Geographic_multipolygon *g1,
                    const Geographic_geometrycollection *g2) const {
  return geometry_collection_apply_disjoint<Geographic_geometrycollection>(
      *this, g1, g2);
}

bool Disjoint::eval(const Geographic_multipolygon *g1,
                    const Geographic_multipoint *g2) const {
  return eval(g2, g1);
}

bool Disjoint::eval(const Geographic_multipolygon *g1,
                    const Geographic_multilinestring *g2) const {
  return bg::disjoint(*g1, *g2, m_geographic_ll_la_aa_strategy);
}

bool Disjoint::eval(const Geographic_multipolygon *g1,
                    const Geographic_multipolygon *g2) const {
  return bg::disjoint(*g1, *g2, m_geographic_ll_la_aa_strategy);
}

//////////////////////////////////////////////////////////////////////////////

// disjoint(Box, Box)

bool Disjoint::eval(const Cartesian_box *b1, const Cartesian_box *b2) const {
  return bg::disjoint(*b1, *b2);
}

bool Disjoint::eval(const Geographic_box *b1, const Geographic_box *b2) const {
  return bg::disjoint(*b1, *b2);
}

//////////////////////////////////////////////////////////////////////////////

bool disjoint(const dd::Spatial_reference_system *srs, const Geometry *g1,
              const Geometry *g2, const char *func_name, bool *disjoint,
              bool *null) noexcept {
  try {
    DBUG_ASSERT(g1->coordinate_system() == g2->coordinate_system());
    DBUG_ASSERT(srs == nullptr ||
                ((srs->is_cartesian() &&
                  g1->coordinate_system() == Coordinate_system::kCartesian) ||
                 (srs->is_geographic() &&
                  g1->coordinate_system() == Coordinate_system::kGeographic)));

    if ((*null = (g1->is_empty() || g2->is_empty()))) return false;

    Disjoint disjoint_func(srs ? srs->semi_major_axis() : 0.0,
                           srs ? srs->semi_minor_axis() : 0.0);
    *disjoint = disjoint_func(g1, g2);
  } catch (...) {
    handle_gis_exception(func_name);
    return true;
  }

  return false;
}

bool mbr_disjoint(const dd::Spatial_reference_system *srs, const Geometry *g1,
                  const Geometry *g2, const char *func_name, bool *disjoint,
                  bool *null) noexcept {
  try {
    DBUG_ASSERT(g1->coordinate_system() == g2->coordinate_system());
    DBUG_ASSERT(srs == nullptr ||
                ((srs->is_cartesian() &&
                  g1->coordinate_system() == Coordinate_system::kCartesian) ||
                 (srs->is_geographic() &&
                  g1->coordinate_system() == Coordinate_system::kGeographic)));

    if ((*null = (g1->is_empty() || g2->is_empty()))) return false;

    Disjoint disjoint_func(srs ? srs->semi_major_axis() : 0.0,
                           srs ? srs->semi_minor_axis() : 0.0);

    switch (g1->coordinate_system()) {
      case Coordinate_system::kCartesian: {
        Cartesian_box mbr1;
        box_envelope(g1, srs, &mbr1);
        Cartesian_box mbr2;
        box_envelope(g2, srs, &mbr2);
        *disjoint = disjoint_func(&mbr1, &mbr2);
        break;
      }
      case Coordinate_system::kGeographic: {
        Geographic_box mbr1;
        box_envelope(g1, srs, &mbr1);
        Geographic_box mbr2;
        box_envelope(g2, srs, &mbr2);
        *disjoint = disjoint_func(&mbr1, &mbr2);
        break;
      }
    }
  } catch (...) {
    handle_gis_exception(func_name);
    return true;
  }

  return false;
}

}  // namespace gis