#ifndef RENDERER_H
#define RENDERER_H

#include <stddef.h>
#include <stdbool.h>
#include "font_pack.h"

typedef struct RenderObject {
    unsigned int x, y;
    unsigned int width, height;
    unsigned int color;
} RenderObject;

typedef struct RenderText {
    RenderObject base;              // Position, size, color
    const char *text;               // String to render
    const FontPack *font;           // Font used for rendering
} RenderText;

typedef struct Renderer {
    volatile unsigned int *fb;
    unsigned int width;
    unsigned int height;
    unsigned int pitch;

    void (*clear_screen)(struct Renderer *renderer, unsigned int color);
    void (*draw_rect)(struct Renderer *renderer, RenderObject *obj);
    void (*draw_text)(struct Renderer *renderer, RenderText *text);
    void (*draw_objects)(struct Renderer *renderer, RenderObject *objs[], unsigned int count);
} Renderer;

// ===== Window definition =====
typedef struct Window {
    RenderObject frame;            // Outer frame of the window
    RenderObject content_area;     // Area inside window (excluding titlebar)
    RenderText title_bar;          // Title bar text
    unsigned int background_color; // Background fill color for content
    bool visible;                  // Visibility flag
} Window;

// Function to initialize a Window
void window_init(Window *win,
                 unsigned int x, unsigned int y,
                 unsigned int width, unsigned int height,
                 const char *title, const FontPack *font,
                 unsigned int title_color, unsigned int bg_color,
                 unsigned int text_color);

// Function to render the Window
void window_draw(Renderer *renderer, Window *win);

// ===== Renderer functions =====
bool renderer_init(Renderer *renderer);
void clear_screen_impl(Renderer *renderer, unsigned int color);
void draw_rect_impl(Renderer *renderer, RenderObject *obj);
void draw_text_impl(Renderer *renderer, RenderText *text);
void draw_objects_impl(Renderer *renderer, RenderObject *objs[], unsigned int count);

#endif // RENDERER_H