#ifndef RENDERER_H
#define RENDERER_H

#include "SDL.h"
#include "SDL_render.h"
#include "SDL_surface.h"
#include "SDL_video.h"
#include <stdbool.h>
#include <stdint.h>

#ifdef __cplusplus
extern "C" {
#endif // !__cplusplus

typedef struct renderer Renderer;

typedef struct {
  float x;
  float y;
  float width;
  float height;
} RenderRect;

/**
 * Attempts to allocate a Renderer object on the heap.
 *
 * Returns the pointer to the object when it succeeds, or NULL if it fails.
 */
Renderer *create_renderer(SDL_Window *window);

/**
 * Returns the valid drawable area that the renderer can use.
 *
 * Useful when rendering on screens that support high DPI since the drawable
 * area is usually bigger than the user-defined size.
 */
void get_render_output_size(Renderer *renderer, int32_t *w, int32_t *h);

void render_clear(const Renderer *renderer, SDL_Color color);
void draw_rect(const Renderer *renderer, SDL_Color color, float x, float y,
               float w, float h);
void fill_rect(const Renderer *renderer, SDL_Color color, float x, float y,
               float w, float h);
void render_surface(const Renderer *renderer, SDL_Surface *surface,
                    const RenderRect *dest);
void render_texture(const Renderer *renderer, SDL_Texture *texture,
                    const RenderRect *src, const RenderRect *dest);
void swap_buffers(const Renderer *renderer);

/**
 * Attempts to load an SDL_Texture from a file path.
 *
 * Returns a pointer to the object if it succeeds or NULL when it fails.
 */
SDL_Texture *load_texture(const Renderer *renderer, const char *path);

/**
 * Frees the memory allocated to the Renderer object and performs the
 * necessary cleanup.
 */
void destroy_renderer(Renderer **renderer);

#ifdef __cplusplus
}
#endif // !__cplusplus

#endif // !RENDERER_H