#ifndef _FUS_UTIL_H_
#define _FUS_UTIL_H_

#include <stdlib.h>
#include <stdbool.h>
#include <SDL2/SDL.h>

#include "str_utils.h"
#include "file_utils.h"

#ifndef NO_EXECINFO
#   include <execinfo.h> /* backtrace_symbols_fd */
#   define BACKTRACE(N) { \
    void *buffer[N]; \
    backtrace_symbols_fd(buffer, N, 2); \
}
#else
#   define BACKTRACE(N) ;
#endif

#define ERR_INFO() fprintf(stderr, "%s:%s:%i: ", \
    __FILE__, __func__, __LINE__)
#define RET_IF_SDL_NZ(x) { \
    if((x) != 0){ \
        ERR_INFO(); \
        fprintf(stderr, "SDL error: %s\n", SDL_GetError()); \
        return 2;}}
#define RET_IF_SDL_NULL(x) { \
    if((x) == NULL){ \
        ERR_INFO(); \
        fprintf(stderr, "SDL error: %s\n", SDL_GetError()); \
        return 2;}}
#define RET_NULL_IF_SDL_NZ(x) { \
    if((x) != 0){ \
        ERR_INFO(); \
        fprintf(stderr, "SDL error: %s\n", SDL_GetError()); \
        return NULL;}}
#define RET_NULL_IF_SDL_NULL(x) { \
    if((x) == NULL){ \
        ERR_INFO(); \
        fprintf(stderr, "SDL error: %s\n", SDL_GetError()); \
        return NULL;}}

#define MAX_SPACES 256

int int_min(int x, int y);
int int_max(int x, int y);
int linear_interpolation(int x0, int x1, int t, int t_max);
void interpolate_color(SDL_Color *c, Uint8 r, Uint8 g, Uint8 b,
    int t, int t_max);
void get_spaces(char *spaces, int max_spaces, int n_spaces);
void palette_printf(SDL_Palette *pal);
SDL_Surface *surface8_create(int w, int h,
    bool use_rle, bool use_colorkey, SDL_Palette *pal);
SDL_Surface *surface32_create(int w, int h,
    bool use_rle, bool use_colorkey);
Uint8 *surface8_get_pixel_ptr(SDL_Surface *surface, int x, int y);
Uint32 *surface32_get_pixel_ptr(SDL_Surface *surface, int x, int y);

#endif