#include <stddef.h>
#include <stdlib.h>
#include <stdio.h>
#include "maps.h"
struct Maps* load_maps(char* filename) {
    FILE* f = fopen(filename, "r");
    if (f == NULL) {
        return NULL;
    }
    int num_maps;
    int num_read = fread(&num_maps, 4, 1, f);

    if (num_read != 1 || num_maps > 10000) {
        return NULL;
    }

    int mapfile_size = sizeof(struct Map) * num_maps;
    struct Maps *maps = (struct Maps *)malloc(mapfile_size + 4);
    maps->num_maps = num_maps;
    num_read = fread(&maps->maps, 1, mapfile_size, f);
    if (num_read != mapfile_size) {
        return NULL;
    }
    fclose(f);
    return maps;
}