from __future__ import annotations

import os


def env_str(name: str, default: str = "") -> str:
    return os.getenv(name, default)


def env_int(name: str, default: int) -> int:
    raw = os.getenv(name)
    if raw is None or raw == "":
        return default
    return int(raw)


def env_float(name: str, default: float) -> float:
    raw = os.getenv(name)
    if raw is None or raw == "":
        return default
    return float(raw)


def env_bool(name: str, default: bool = False) -> bool:
    raw = os.getenv(name)
    if raw is None:
        return default
    return raw.strip().lower() in {"1", "true", "yes", "on"}