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#include <stdio.h>

typedef struct true_t {
    char _;
} true_t;

true_t TRUE;

typedef struct false_t {
    char _;
} false_t;

false_t FALSE;

int f_true() {
    return 1;
}

int f_false() {
    return 0;
}

#define bool_v(B) _Generic((B *) (0), true_t *: TRUE, false_t *: FALSE)
#define bool_v_to_int(B) _Generic(B, true_t: 1, false_t: 0)

#define v_to_bool(V) typeof(V)

#define is_string_v(X) _Generic((X), \
        char *: 1,                   \
        default: 0)

#define is_string_t(X) typeof(_Generic((X), \
        char *: TRUE,                       \
        default: FALSE))


#define has_signature_v(X, R, ...)         \
    _Generic((X),                          \
            SignatureM(R, __VA_ARGS__): 1, \
            default: 0)

#define has_signature_t(X, R, ...)            \
    typeof(_Generic((X),                      \
            SignatureM(R, __VA_ARGS__): TRUE, \
            default: FALSE))

#define to_string(x) _Generic((x), \
        true_t: "true",            \
        false_t: "false",          \
        char*: x,                  \
        const char*: x)

#define has_same_type_v(X, Y)       \
    _Generic(has_same_type_t(X, Y), \
            true_t: 1,              \
            false_t: 0)

#define has_same_type_t(X, Y) typeof(_Generic((X), \
        typeof(Y): TRUE,                           \
        default: FALSE))

#define SignatureM(R, ...) R (*)(__VA_ARGS__)

#define is_same_t(X, Y)          \
    typeof(_Generic(((X *) (0)), \
            Y *: TRUE,           \
            default: FALSE))

#define and_t(X, Y)                                                    \
    typeof(_Generic(bool_v(X),                                         \
            true_t: _Generic(bool_v(Y), true_t: TRUE, false_t: FALSE), \
            false_t: _Generic(bool_v(Y), true_t: FALSE, false_t: FALSE)))

#define or_t(X, Y)                                                    \
    typeof(_Generic(bool_v(X),                                        \
            true_t: _Generic(bool_v(Y), true_t: TRUE, false_t: TRUE), \
            false_t: _Generic(bool_v(Y), true_t: TRUE, false_t: FALSE)))

#define not_t(X)               \
    typeof(_Generic(bool_v(X), \
            true_t: FALSE,     \
            false_t: TRUE))

#define result_t(X, ...) typeof((X) (__VA_ARGS__))

#define id_sig(T) SignatureM(T, void)
#define true_sig id_sig(true_t)
#define false_sig id_sig(false_t)
#define _0 false_sig
#define _1 true_sig

#define bool_sig_v(S) _Generic((S) (0), true_sig: TRUE, false_sig: FALSE)
#define bool_sig_int(S) _Generic((S) (0), true_sig: 1, false_sig: 0)
#define bool_sig_t(S) typeof(bool_sig_v(S))

#define sig_apply_res_t(X) typeof(((X) (0))())

#define is_same_sig_t(SA, SB) typeof(_Generic((SA) (0), SB: TRUE, default: FALSE))

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// Глобальные переменные

uint8_t *map = NULL;
int map_width = 0;
int map_height = 0;

bool load_level(const char *filename) {
    FILE *file = fopen(filename, "r");
    if (!file) {
        printf("Ошибка: Не удалось открыть файл %s\n", filename);
        return false;
    }

    char lines[512][512];
    int h = 0;
    char buffer[512];

    while (fgets(buffer, sizeof(buffer), file)) {
        buffer[strcspn(buffer, "\r\n")] = 0;
        if (buffer[0] == '\0' || buffer[0] == ';') continue;

        bool contains_map_char = false;
        for(int i=0; buffer[i]; i++) {
            if (strchr("#$@.*+ ", buffer[i])) {
                contains_map_char = true;
                break;
            }
        }
        
        if (contains_map_char) {
            strncpy(lines[h], buffer, 511);
            h++;
            if (h >= 512) break;
        }
        if (h > 0 && buffer[0] == '\0') break;
    }
    fclose(file);

    if (h == 0) return false;

    int w = 0;
    for (int i = 0; i < h; i++) {
        int len = strlen(lines[i]);
        if (len > w) w = len;
    }

    map = malloc(w * h * sizeof(uint8_t));
    map_width = w;
    map_height = h;
    memset(map, CELL_EMPTY, w * h);

    for (int y = 0; y < h; y++) {
        for (int x = 0; x < w; x++) {
            char c = (x < (int)strlen(lines[y])) ? lines[y][x] : ' ';
            if (c == '#') map[y * w + x] = CELL_WALL;
            else if (c == '$') map[y * w + x] = CELL_CUBE;
            else if (c == '.') map[y * w + x] = CELL_TARGET;
            else if (c == '*') map[y * w + x] = CELL_CUBE_ON_TARGET;
            else if (c == '@') { map[y * w + x] = CELL_EMPTY; playerX = x; playerY = y; }
            else if (c == '+') { map[y * w + x] = CELL_TARGET; playerX = x; playerY = y; }
            else map[y * w + x] = CELL_EMPTY;
        }
    }
    return true;
}