import os
import tempfile

lock_dir_path = os.path.join(tempfile.gettempdir(), "rwa-session-service")
lock_file_path = os.path.join(lock_dir_path, "rwa-session-service.lock")


def lock():
    """Create lock file."""
    os.makedirs(lock_dir_path, exist_ok=True)
    with open(lock_file_path, "w") as f:
        f.write("lock")


def is_locked():
    """Check if the lock file exists."""
    return os.path.exists(lock_file_path)


def unlock():
    """Remove the lock file."""
    try:
        os.remove(lock_file_path)
    except FileNotFoundError:
        pass