"""Short labels for buttons (pure, so they can be tested without Telegram)."""


def clip(text: str, n: int = 48) -> str:
    return text if len(text) <= n else text[: n - 1] + "…"


def course_label(code, name: str) -> str:
    """One button line: "code · name" when it fits, else just the name."""
    if code and len(code) + 3 + len(name) <= 36:
        return f"{code} · {name}"
    return clip(name, 36)