from base64 import urlsafe_b64encode
from hashlib import sha3_512


def scramble(secret, value):
    h = sha3_512()
    h.update(f"{secret}{value}".encode())
    return urlsafe_b64encode(h.digest()).rstrip(b"=").decode("ascii")


def get_redis_pass(redis_conf):
    prefix = "requirepass "
    with open(redis_conf, "rt") as fh:
        for line in fh:
            if not line.startswith(prefix):
                continue
            return line[len(prefix) :].rstrip()
    return None