from favorite_stickers.naming import pack_name, pack_title


def test_first_pack_uses_stable_bot_owned_name() -> None:
    assert pack_name("FavoriteKeeperBot", 123456, 1) == (
        "favorites_123456_by_favoritekeeperbot"
    )
    assert pack_title("FavoriteKeeperBot", 123456, 1) == (
        "FavoriteKeeperBot - Favorites 123456"
    )


def test_next_pack_has_number_suffix() -> None:
    assert pack_name("FavoriteKeeperBot", 123456, 2) == (
        "favorites_123456_2_by_favoritekeeperbot"
    )
    assert pack_title("FavoriteKeeperBot", 123456, 2) == (
        "FavoriteKeeperBot - Favorites 123456 [2]"
    )


def test_names_respect_telegram_length_limit() -> None:
    username = "a" * 32
    assert len(pack_name(username, 9_223_372_036_854_775_807, 9999)) <= 64
    assert len(pack_title(username, 9_223_372_036_854_775_807, 9999)) <= 64


def test_short_name_never_contains_consecutive_underscores() -> None:
    name = pack_name("my__favorite_bot", 123, 2)
    assert "__" not in name
    assert name.endswith("_by_my_favorite_bot")