#pragma once

#include <SFML/Graphics/RenderWindow.hpp>
#include <SFML/Graphics/VertexArray.hpp>
#include <SFML/Graphics/Texture.hpp>
#include <SFML/Graphics/Sprite.hpp>
#include <array>

using pos = std::pair<int, int>;

enum class DIRECTION
{
    UP,
    DOWN,
    RIGHT,
    LEFT,

    NONE
};

class Board
{
public:
    explicit Board(int splitting = 6);
    ~Board();

    void draw(sf::RenderWindow& window);
    bool moveSelection(const DIRECTION& direction);
    void onSelectionMode();
    bool isWinCondition() const;

private:

    struct Cell
    {
        std::vector<Cell>::size_type inital_index;
        std::vector<Cell>::size_type current_index;
        sf::Sprite *sprite;
        static float side_length;
    };

    using Cells = std::vector<Cell>;
    using RefCells = std::vector<Cells::size_type>;

    sf::VertexArray rect_selection;
    Cells::size_type selection_index;

    Cells::size_type cells_on_width; // amount of cells on horizontal side of board
    Cells::size_type cells_on_height; // amount of cells on vertical side of board
    Cells vec_field;
    RefCells vec_ref; // map to actual index
    sf::Texture global_texture;
    bool on_selection;

    void setSelectionVertex(Cells::size_type index);
    void swapCells(Cells::size_type curr_cell_ind, Cells::size_type swap_cell_ind);
    Cells::iterator cellByCurrentIndex(Cells::size_type index);
};