#define __UNDAR_ARENA_SIZE__ 64000

#include "../libc.h"
#include "../strbuf.h"
#include <stdio.h>

typedef struct Point Point;
struct Point {
	u32 x;
	u32 y;
};

Point *
Point_init(Arena *a, u32 x, u32 y)
{
	Point *this = (Point *)aalloc(a, sizeof(Point));
	this->x = x;
	this->y = y;
	return this;
}

char*
Point_toS(Arena *a, Point *this)
{    
    u32 __UNDAR_FN_CHECKPOINT_REF__ = a->count;

    StrBuf *buf = StrBuf_init(a);
    StrBuf_append(a, buf, "[x:");
    StrBuf_append(a, buf,nat_to_string(a, this->x));
    StrBuf_append(a, buf, ", y:");
    StrBuf_append(a, buf,nat_to_string(a, this->y));
    StrBuf_append(a, buf, "]");

    ARENA_RETURN_STRBUF(a, __UNDAR_FN_CHECKPOINT_REF__, buf);
}

typedef struct Rect Rect;
struct Rect {
	Point top_left;
	Point bottom_right;
	u32 width;
	u32 height;
};

Rect *
Rect_init(Arena *a, Point *tl, Point *br, u32 width, u32 height)
{
	Rect *this = (Rect *)aalloc(a, sizeof(Rect));
	mcpy(&this->top_left, tl, sizeof(Point));
    mcpy(&this->bottom_right, br, sizeof(Point));
	this->width = width;
	this->height = height;
	return this;
}

char*
Rect_toS(Arena *a, Rect *this)
{
    u32 __UNDAR_FN_CHECKPOINT_REF__ = a->count;

    StrBuf *buf = StrBuf_init(a);
    StrBuf_append(a, buf, "[top_left: ");
    StrBuf_append(a, buf,Point_toS(a,&this->top_left));
    StrBuf_append(a, buf,", bottom_right: ");
    StrBuf_append(a, buf,Point_toS(a,&this->bottom_right));
    StrBuf_append(a, buf, ", width:");    
    StrBuf_append(a, buf,nat_to_string(a,this->width));
    StrBuf_append(a, buf, ", height:");    
    StrBuf_append(a, buf,nat_to_string(a,this->height));
    StrBuf_append(a, buf, "]");

    ARENA_RETURN_STRBUF(a, __UNDAR_FN_CHECKPOINT_REF__, buf);
}

Rect *
create_geometry(Arena *a)
{
    u32 __UNDAR_FN_CHECKPOINT_REF__ = a->count;

    Point *tl = Point_init(a, 10, 20);
    Point *br = Point_init(a, 100, 200);
    Rect *final_rect = Rect_init(a, tl, br, 90, 180);

    ARENA_RETURN(a, __UNDAR_FN_CHECKPOINT_REF__, final_rect, Rect);
}

int main() {
	u8 tape[__UNDAR_ARENA_SIZE__];
	Arena arena = {tape, 0, __UNDAR_ARENA_SIZE__};
    Rect *r = create_geometry(&arena);
    printf("%s\n", Rect_toS(&arena, r));
    return 0;
}