/*

   ____                               ____      ___ ____       ____  ____      ___
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 8P    Y8                              `MM.     d'   MM      6M'    ` `MM.     d'
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MM      MM `M6MMMMb   6MMMMb `MM 6MMb    `MM. d'     MM      YM.        `MM. d'
MM      MM  MM'  `Mb 6M'  `Mb MMM9 `Mb    `MMd       MM       YMMMMb     `MMd
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  YMMMM9    MMYMMM9   YMMMM9 _MM_  _MM_M(_    _)MM_ _MMMMMMM MYMMMM9 _M(_    _)MM_
            MM
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  Copyright (c) 2018, Kenneth Troldal Balslev

  All rights reserved.

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:
  - Redistributions of source code must retain the above copyright
    notice, this list of conditions and the following disclaimer.
  - Redistributions in binary form must reproduce the above copyright
    notice, this list of conditions and the following disclaimer in the
    documentation and/or other materials provided with the distribution.
  - Neither the name of the author nor the
    names of any contributors may be used to endorse or promote products
    derived from this software without specific prior written permission.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

#ifndef OPENXLSX_XLCELLITERATOR_HPP
#define OPENXLSX_XLCELLITERATOR_HPP

#pragma warning(push)
#pragma warning(disable : 4251)
#pragma warning(disable : 4275)

#include <algorithm>

#include "OpenXLSX-Exports.hpp"
#include "XLCell.hpp"
#include "XLCellReference.hpp"
#include "XLIterator.hpp"
#include "XLXmlParser.hpp"

namespace OpenXLSX
{
    class OPENXLSX_EXPORT XLCellIterator
    {
    public:
        using iterator_category = std::forward_iterator_tag;
        using value_type        = XLCell;
        using difference_type   = int64_t;
        using pointer           = XLCell*;
        using reference         = XLCell&;

        /**
         * @brief
         * @param cellRange
         * @param loc
         */
        explicit XLCellIterator(const XLCellRange& cellRange, XLIteratorLocation loc);

        /**
         * @brief
         */
        ~XLCellIterator();

        /**
         * @brief
         * @param other
         */
        XLCellIterator(const XLCellIterator& other);

        /**
         * @brief
         * @param other
         */
        [[maybe_unused]] XLCellIterator(XLCellIterator&& other) noexcept;

        /**
         * @brief
         * @param other
         * @return
         */
        XLCellIterator& operator=(const XLCellIterator& other);

        /**
         * @brief
         * @param other
         * @return
         */
        XLCellIterator& operator=(XLCellIterator&& other) noexcept;

        /**
         * @brief
         * @return
         */
        XLCellIterator& operator++();

        /**
         * @brief
         * @return
         */
        XLCellIterator operator++(int);    // NOLINT

        /**
         * @brief
         * @return
         */
        reference operator*();

        /**
         * @brief
         * @return
         */
        pointer operator->();

        /**
         * @brief
         * @param rhs
         * @return
         */
        bool operator==(const XLCellIterator& rhs) const;

        /**
         * @brief
         * @param rhs
         * @return
         */
        bool operator!=(const XLCellIterator& rhs) const;

        /**
         * @brief
         * @param last
         * @return
         */
        uint64_t distance(const XLCellIterator& last);

    private:
        std::unique_ptr<XMLNode> m_dataNode;             /**< */
        XLCellReference          m_topLeft;              /**< The cell reference of the first cell in the range */
        XLCellReference          m_bottomRight;          /**< The cell reference of the last cell in the range */
        XLCell                   m_currentCell;          /**< */
        XLSharedStrings          m_sharedStrings;        /**< */
        bool                     m_endReached { false }; /**< */
    };

}    // namespace OpenXLSX

// ===== Template specialization for std::distance.
namespace std    // NOLINT
{
    using OpenXLSX::XLCellIterator;
    template<>
    inline typename std::iterator_traits<XLCellIterator>::difference_type distance<XLCellIterator>(XLCellIterator first,
                                                                                                   XLCellIterator last)
    {
        return static_cast<typename std::iterator_traits<XLCellIterator>::difference_type>(first.distance(last));
    }
}    // namespace std

#pragma warning(pop)
#endif    // OPENXLSX_XLCELLITERATOR_HPP