"""Utilities for dealing with Indy conventions."""
from os import getenv, makedirs, urandom
from os.path import isdir, join
from pathlib import Path
from platform import system
[docs]async def generate_pr_nonce() -> str:
"""Generate a nonce for a proof request."""
# equivalent to indy.anoncreds.generate_nonce
return str(int.from_bytes(urandom(10), "big"))
[docs]def indy_client_dir(subpath: str = None, create: bool = False) -> str:
"""Return '/'-terminated subdirectory of indy-client directory.
Args:
subpath: subpath within indy-client structure
create: whether to create subdirectory if absent
"""
home = Path.home()
target_dir = join(
home,
(
"Documents"
if isdir(join(home, "Documents"))
else getenv("EXTERNAL_STORAGE", "") if system() == "Linux" else ""
),
".indy_client",
subpath if subpath else "",
"", # set trailing separator
)
if create:
makedirs(target_dir, exist_ok=True)
return target_dir