#include "../nostr_core/nostr_platform.h"

#include <fcntl.h>
#include <unistd.h>

int nostr_platform_random(unsigned char *buf, size_t len) {
    if (buf == NULL || len == 0) {
        return -1;
    }

    int fd = open("/dev/urandom", O_RDONLY);
    if (fd < 0) {
        return -1;
    }

    size_t total = 0;
    while (total < len) {
        ssize_t n = read(fd, buf + total, len - total);
        if (n <= 0) {
            close(fd);
            return -1;
        }
        total += (size_t)n;
    }

    close(fd);
    return 0;
}