"""Contains information needed to manage accounts."""
from __future__ import annotations
from dataclasses import dataclass, field, fields
from os import getenv
from pickle import dumps, loads
from typing import cast
from cryptography.fernet import Fernet
prop_to_env = {
"ManifoldToken": "ManifoldAPIKey",
"GithubToken": "GithubAccessToken",
}
[docs]@dataclass
class Account:
"""Represent a Manifold account and its related API access keys."""
# Section: Manifold
ManifoldToken: str
ManifoldUsername: str = ''
# Section: GitHub
GithubUsername: str = ''
GithubToken: str = ''
# Section: Telegram
TelegramAPIKey: str = ''
TelegramChatID: str = ''
# Internals section
key: bytes = field(default_factory=Fernet.generate_key, compare=False, repr=False)
[docs] def to_bytes(self) -> bytes:
"""Generate encrypted bytes to represent this account."""
return Fernet(self.key).encrypt(dumps(self))
[docs] @staticmethod
def from_bytes(buff: bytes, key: bytes) -> 'Account':
"""Decrypt and deserialize an Account from an encrypted bytestring."""
return cast(Account, loads(Fernet(key).decrypt(buff)))
[docs] @staticmethod
def from_env() -> 'Account':
"""Try to infer an account from environment variables."""
kwargs = {}
for f in fields(Account):
if f.init:
value = getenv(prop_to_env.get(f.name, f.name), None)
if value is not None:
kwargs[f.name] = value
return Account(key=Fernet.generate_key(), **kwargs)