#ifndef CELL_H
#define CELL_H

#include "entity.h"
#include <memory>
#include <SFML/Graphics/Color.hpp>

class Hero;
class Level;

using HeroPtr = std::unique_ptr<Hero>;
using LevelPtr = std::unique_ptr<Level>;

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

/// Represents interface for all level cells
class Cell : public Entity
{
protected:
    sf::Color cell_color;

public:
    Cell(coordinate cell_x = 0,
         coordinate cell_y = 0,
         const sf::Color &color = sf::Color::White);

    virtual ~Cell() override;

    sf::Color color() const noexcept;

    /// Determine if Hero can move onto this cell or not
    virtual bool onMovingTo(HeroPtr &hero, LevelPtr &level) = 0;
};

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

/// Any cell where Hero is free to move
class PassableCell : public Cell
{
public:
    PassableCell(coordinate cell_x = 0,
                 coordinate cell_y = 0,    // Brown
                 const sf::Color &color = sf::Color(165, 42, 42));

    virtual ~PassableCell() override;

    virtual bool onMovingTo(HeroPtr &hero, LevelPtr &level) override;
};

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

/// A cell which requires Hero to spend a charge for bridge to move on
class WaterCell : public Cell
{
public:
    WaterCell(coordinate cell_x = 0,
              coordinate cell_y = 0,
              const sf::Color &color = sf::Color::Blue);

    virtual ~WaterCell() override;

    virtual bool onMovingTo(HeroPtr &hero, LevelPtr &level) override;
};

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

/// A cell which is impossible to move on
class WallCell : public Cell
{
public:
    WallCell(coordinate cell_x = 0,
             coordinate cell_y = 0,      // Gray
             const sf::Color &color = sf::Color(125, 125, 125));

    virtual ~WallCell() override;

    virtual bool onMovingTo(HeroPtr &hero, LevelPtr &level) override;
};

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

/// A cell which gives hero a charge
class ChargeCell : public Cell
{
private:
    int cell_charges;

public:
    ChargeCell(coordinate cell_x = 0,
               coordinate cell_y = 0,
               int has_charges = 1,
               const sf::Color &color = sf::Color::Green);

    virtual ~ChargeCell() override;

    virtual bool onMovingTo(HeroPtr &hero, LevelPtr &level) override;
};

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

/// A cell which moves hero to next level
class ExitCell : public Cell
{
public:
    ExitCell(coordinate cell_x = 0,
             coordinate cell_y = 0,
             const sf::Color &color = sf::Color::Red);

    virtual ~ExitCell() override;

    virtual bool onMovingTo(HeroPtr &hero, LevelPtr &level) override;
};

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

/// A cell which teleports hero to following coordinates
class TeleportCell : public Cell
{
private:
    coordinate new_x, new_y;

public:
    TeleportCell(coordinate cell_x = 0,
                 coordinate cell_y = 0,
                 coordinate new_cell_x = 0,
                 coordinate new_cell_y = 0,      // Purple
                 const sf::Color &color = sf::Color(128, 0, 128));

    virtual ~TeleportCell() override;

    virtual bool onMovingTo(HeroPtr &hero, LevelPtr &level) override;
};

#endif // CELL_H