from __future__ import annotations

import shutil
from datetime import datetime, timezone
from pathlib import Path


def utcnow() -> str:
    return datetime.now(timezone.utc).replace(microsecond=0).isoformat()


def parse_time(value: str) -> datetime:
    return datetime.fromisoformat(value)


def free_gb(path: Path) -> float:
    usage = shutil.disk_usage(path)
    return usage.free / (1024**3)