// Copyright (c) 2014-2015 Thomas Fussell
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, WRISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE
//
// @license: http://www.opensource.org/licenses/mit-license.php
// @author: see AUTHORS file
#include <xlnt/worksheet/cell_vector.hpp>
#include <xlnt/cell/cell.hpp>

namespace xlnt {

cell_vector::iterator::iterator(worksheet ws, const cell_reference &start_cell, major_order order)
    : ws_(ws), current_cell_(start_cell), range_(start_cell.to_range()), order_(order)
{
}

cell_vector::iterator::iterator(const iterator &other)
{
    *this = other;
}

bool cell_vector::iterator::operator==(const iterator &other) const
{
    return ws_ == other.ws_ && current_cell_ == other.current_cell_ && order_ == other.order_;
}

bool cell_vector::iterator::operator!=(const iterator &other) const
{
    return !(*this == other);
}

cell_vector::iterator &cell_vector::iterator::operator--()
{
    if (order_ == major_order::row)
    {
        current_cell_.set_column_index(current_cell_.get_column_index() - 1);
    }
    else
    {
        current_cell_.set_row(current_cell_.get_row() - 1);
    }

    return *this;
}

cell_vector::iterator cell_vector::iterator::operator--(int)
{
    iterator old = *this;
    --*this;
    return old;
}

cell_vector::iterator &cell_vector::iterator::operator++()
{
    if (order_ == major_order::row)
    {
        current_cell_.set_column_index(current_cell_.get_column_index() + 1);
    }
    else
    {
        current_cell_.set_row(current_cell_.get_row() + 1);
    }

    return *this;
}

cell_vector::iterator cell_vector::iterator::operator++(int)
{
    iterator old = *this;
    ++*this;
    return old;
}

cell_vector::const_iterator::const_iterator(worksheet ws, const cell_reference &start_cell, major_order order)
    : ws_(ws), current_cell_(start_cell), range_(start_cell.to_range()), order_(order)
{
}

cell_vector::const_iterator::const_iterator(const const_iterator &other)
{
    *this = other;
}

bool cell_vector::const_iterator::operator==(const const_iterator &other) const
{
    return ws_ == other.ws_ && current_cell_ == other.current_cell_ && order_ == other.order_;
}

bool cell_vector::const_iterator::operator!=(const const_iterator &other) const
{
    return !(*this == other);
}

cell_vector::const_iterator &cell_vector::const_iterator::operator--()
{
    if (order_ == major_order::row)
    {
        current_cell_.set_column_index(current_cell_.get_column_index() - 1);
    }
    else
    {
        current_cell_.set_row(current_cell_.get_row() - 1);
    }

    return *this;
}

cell_vector::const_iterator cell_vector::const_iterator::operator--(int)
{
    const_iterator old = *this;
    --*this;
    return old;
}

cell_vector::const_iterator &cell_vector::const_iterator::operator++()
{
    if (order_ == major_order::row)
    {
        current_cell_.set_column_index(current_cell_.get_column_index() + 1);
    }
    else
    {
        current_cell_.set_row(current_cell_.get_row() + 1);
    }

    return *this;
}

cell_vector::const_iterator cell_vector::const_iterator::operator++(int)
{
    const_iterator old = *this;
    ++*this;
    return old;
}

cell cell_vector::iterator::operator*()
{
    return ws_[current_cell_];
}

cell_vector::iterator cell_vector::begin()
{
    return iterator(ws_, ref_.get_top_left(), order_);
}

cell_vector::iterator cell_vector::end()
{
    if (order_ == major_order::row)
    {
        auto past_end = ref_.get_bottom_right();
        past_end.set_column_index(past_end.get_column_index() + 1);
        return iterator(ws_, past_end, order_);
    }

    auto past_end = ref_.get_bottom_right();
    past_end.set_row(past_end.get_row() + 1);
    return iterator(ws_, past_end, order_);
}

cell_vector::const_iterator cell_vector::cbegin() const
{
    return const_iterator(ws_, ref_.get_top_left(), order_);
}

cell_vector::const_iterator cell_vector::cend() const
{
    if (order_ == major_order::row)
    {
        auto past_end = ref_.get_bottom_right();
        past_end.set_column_index(past_end.get_column_index() + 1);
        return const_iterator(ws_, past_end, order_);
    }

    auto past_end = ref_.get_bottom_right();
    past_end.set_row(past_end.get_row() + 1);
    return const_iterator(ws_, past_end, order_);
}

cell cell_vector::operator[](std::size_t cell_index)
{
    return get_cell(cell_index);
}

std::size_t cell_vector::num_cells() const
{
    if (order_ == major_order::row)
    {
        return ref_.get_width() + 1;
    }

    return ref_.get_height() + 1;
}

cell_vector::cell_vector(worksheet ws, const range_reference &reference, major_order order)
    : ws_(ws), ref_(reference), order_(order)
{
}

cell cell_vector::front()
{
    if (order_ == major_order::row)
    {
        return get_cell(ref_.get_top_left().get_column().index);
    }

    return get_cell(ref_.get_top_left().get_row());
}

cell cell_vector::back()
{
    if (order_ == major_order::row)
    {
        return get_cell(ref_.get_bottom_right().get_column().index);
    }

    return get_cell(ref_.get_top_left().get_row());
}

cell cell_vector::get_cell(std::size_t index)
{
    if (order_ == major_order::row)
    {
        return ws_.get_cell(ref_.get_top_left().make_offset((int)index, 0));
    }

    return ws_.get_cell(ref_.get_top_left().make_offset(0, (int)index));
}

std::size_t cell_vector::length() const
{
    return num_cells();
}

cell_vector::const_iterator cell_vector::begin() const
{
    return cbegin();
}
cell_vector::const_iterator cell_vector::end() const
{
    return cend();
}

} // namespace xlnt