from dataclasses import dataclass
from typing import Final
import os


@dataclass(frozen=True)
class Constants:

    TOR_BOOTSTRAP_TIMEOUT: Final[int] = int(
        os.environ.get("TOR_BOOTSTRAP_TIMEOUT", "90")
    )

    TOR_CONTROL_SOCKET_FILENAME: Final[str] = "tor.sock"
    TOR_PROCESS_IDENTIFIER_FILENAME: Final[str] = "tor.pid"
    TOR_INSTANCE_LOCK_FILENAME: Final[str] = "lock"