#pragma once

// FIXME: this header can't be included because this is an API header, and SDL2 development
// headers won't be bundled with crepe. Why is this facade in the API namespace?

#include <SDL2/SDL_render.h>
#include <functional>
#include <memory>

#include "Asset.h"
#include "types.h"

namespace crepe {

class SDLContext;
class Animator;

/**
 * \class Texture
 * \brief Manages texture loading and properties.
 *
 * The Texture class is responsible for loading an image from a source and providing access to
 * its dimensions. Textures can be used for rendering.
 */
class Texture {

public:
	/**
	 * \brief Constructs a Texture from an Asset resource.
	 * \param src Asset with texture data to load.
	 */
	Texture(const Asset & src);

	/**
	 * \brief Destroys the Texture instance, freeing associated resources.
	 */
	~Texture();
	// FIXME: this constructor shouldn't be necessary because this class doesn't manage memory

	Texture(Texture && other) noexcept;
	Texture & operator=(Texture && other) noexcept;
	Texture(const Texture &) = delete;
	Texture & operator=(const Texture &) = delete;

	/**
	 * \brief Gets the width and height of the texture.
	 * \return Width and height of the texture in pixels.
	 */
	ivec2 get_size() const;

private:
	/**
	 * \brief Loads the texture from an Asset resource.
	 * \param res Unique pointer to an Asset resource to load the texture from.
	 */
	void load(const Asset & res);

private:
	//! The texture of the class from the library
	std::unique_ptr<SDL_Texture, std::function<void(SDL_Texture *)>> texture;

	//! Grants SDLContext access to private members.
	friend class SDLContext;

	//! Grants Animator access to private members.
	friend class Animator;
};

} // namespace crepe