#ifndef JNR_RENDERER_H
#define JNR_RENDERER_H

#include <SDL2/SDL.h>
#include <stdbool.h>
#include "config.h"
#include "util/vec2.h"

/* Forward declaration */
typedef struct Camera Camera;

typedef enum DrawLayer {
    LAYER_BG_FAR,       /* parallax background - far  */
    LAYER_BG_NEAR,      /* parallax background - near */
    LAYER_TILES_BG,     /* tile background layer      */
    LAYER_ENTITIES,     /* players, enemies, items    */
    LAYER_TILES_FG,     /* tile foreground layer      */
    LAYER_PARTICLES,    /* effects                    */
    LAYER_HUD,          /* UI overlay (screen-space)  */
    LAYER_COUNT
} DrawLayer;

typedef struct Sprite {
    SDL_Texture *texture;
    SDL_Rect     src;       /* source rect in spritesheet       */
    Vec2         pos;       /* world position (top-left)        */
    Vec2         size;      /* render size in world pixels      */
    bool         flip_x;
    bool         flip_y;
    DrawLayer    layer;
    uint8_t      alpha;     /* 0-255                            */
    double       rotation;  /* degrees, clockwise               */
} Sprite;

void renderer_init(SDL_Renderer *r);
void renderer_set_clear_color(SDL_Color color);
void renderer_clear(void);
void renderer_submit(const Sprite *sprite);
void renderer_flush(const Camera *cam);
void renderer_present(void);
void renderer_shutdown(void);

/* Convenience: draw a filled rect (debug / HUD) */
void renderer_draw_rect(Vec2 pos, Vec2 size, SDL_Color color, DrawLayer layer, const Camera *cam);

#endif /* JNR_RENDERER_H */