/**********************************************************************
 *
 * GEOS - Geometry Engine Open Source
 * http://geos.osgeo.org
 *
 * Copyright (C) 2006 Refractions Research Inc.
 *
 * This is free software; you can redistribute and/or modify it under
 * the terms of the GNU Lesser General Public Licence as published
 * by the Free Software Foundation.
 * See the COPYING file for more information.
 *
 **********************************************************************/

#ifndef GEOS_GEOM_COORDINATEARRAYSEQUENCE_H
#define GEOS_GEOM_COORDINATEARRAYSEQUENCE_H

#include <geos/export.h>
#include <vector>

#include <geos/geom/CoordinateSequence.h>

#include <geos/inline.h>

// Forward declarations
namespace geos {
namespace geom {
class Coordinate;
}
}


namespace geos {
namespace geom { // geos.geom

/// The default implementation of CoordinateSequence
class GEOS_DLL CoordinateArraySequence : public CoordinateSequence {
public:

    CoordinateArraySequence(const CoordinateArraySequence& cl);

    CoordinateArraySequence(const CoordinateSequence& cl);

    std::unique_ptr<CoordinateSequence> clone() const override;

    const Coordinate& getAt(std::size_t pos) const override;

    /// Copy Coordinate at position i to Coordinate c
    void getAt(std::size_t i, Coordinate& c) const override;

    std::size_t getSize() const override;

    // See dox in CoordinateSequence.h
    void toVector(std::vector<Coordinate>&) const override;

    /// Construct an empty sequence
    CoordinateArraySequence();

    /// Construct sequence moving from given Coordinate vector
    CoordinateArraySequence(std::vector<Coordinate> && coords,
                            std::size_t dimension = 0);

    /// Construct sequence taking ownership of given Coordinate vector
    CoordinateArraySequence(std::vector<Coordinate>* coords,
                            std::size_t dimension = 0);

    /// Construct sequence allocating space for n coordinates
    CoordinateArraySequence(std::size_t n, std::size_t dimension = 0);

    ~CoordinateArraySequence() override = default;

    bool
    isEmpty() const override
    {
        return empty();
    }

    bool
    empty() const
    {
        return vect.empty();
    }

    /// Reset this CoordinateArraySequence to the empty state
    void
    clear()
    {
        vect.clear();
    }

    /// Add a Coordinate to the list
    void add(const Coordinate& c);

    /**
     * \brief Add a coordinate
     * @param c the coordinate to add
     * @param allowRepeated if set to false, repeated coordinates
     *                      are collapsed
     */
    void add(const Coordinate& c, bool allowRepeated);

    /** \brief
     * Inserts the specified coordinate at the specified position in
     * this list.
     *
     * @param i the position at which to insert
     * @param coord the coordinate to insert
     * @param allowRepeated if set to false, repeated coordinates are
     *                      collapsed
     *
     * @note this is a CoordinateList interface in JTS
     */
    void add(std::size_t i, const Coordinate& coord, bool allowRepeated);

    void add(const CoordinateSequence* cl, bool allowRepeated, bool direction);

    void setAt(const Coordinate& c, std::size_t pos) override;

    void setPoints(const std::vector<Coordinate>& v) override;

    void setOrdinate(std::size_t index, std::size_t ordinateIndex,
                     double value) override;

    void expandEnvelope(Envelope& env) const override;

    void closeRing();

    std::size_t getDimension() const override;

    void apply_rw(const CoordinateFilter* filter) override;

    void apply_ro(CoordinateFilter* filter) const override;

private:
    std::vector<Coordinate> vect;
    mutable std::size_t dimension;
};

/// This is for backward API compatibility
typedef CoordinateArraySequence DefaultCoordinateSequence;

} // namespace geos.geom
} // namespace geos

#endif // ndef GEOS_GEOM_COORDINATEARRAYSEQUENCE_H