from datetime import datetime, timedelta from uuid import uuid4 USED_TOKENS = set() LOGGED_IN_USERS: dict[str, (int, datetime)] = {} def login_user(user_id: int) -> str: ''' Creates token for user ''' token = str(uuid4()) while token in USED_TOKENS: token = str(uuid4()) if len(USED_TOKENS) > 10_000_000: USED_TOKENS.clear() for token in LOGGED_IN_USERS: USED_TOKENS.add(token) USED_TOKENS.add(token) LOGGED_IN_USERS[token] = user_id, datetime.now() return token def logout_user(token: str): if token in LOGGED_IN_USERS: del LOGGED_IN_USERS[token] def get_user(token: str) -> int | None: if token not in LOGGED_IN_USERS: return None user_id, login_date = LOGGED_IN_USERS[token] time_since_login: timedelta = datetime.now() - login_date if time_since_login.total_seconds() > (60 * 30): # 30 mins del LOGGED_IN_USERS[token] return None return user_id