from pathlib import Path
import time

LOCK_DIR = Path("/var/run/tg-bot")
LOCK_DIR.mkdir(parents=True, exist_ok=True)


def lock_path(name: str) -> Path:
    return LOCK_DIR / f"{name}.lock"


def acquire_lock(name: str) -> bool:
    p = lock_path(name)
    if p.exists():
        return False
    p.write_text(str(time.time()))
    return True


def release_lock(name: str):
    p = lock_path(name)
    if p.exists():
        p.unlink()