"""The guard in front of a recursive delete.

`sweep_orphans` rmtree's directories under `_HLS_ROOT`, and that root is admin-configurable
(PLEX_HLS_DIR) — it can legitimately be a shared scratch path. `_SESSION_DIR_RE` is the ONLY thing
that keeps the sweep off a neighbour's data, so the names it accepts are pinned here."""
import pytest

from app.plex.stream import _SESSION_DIR_RE


@pytest.mark.parametrize(
    "name",
    [
        "12345_0",  # legacy shape (pre multi-audio): {rating_key}_{start}
        "12345_842",
        "12345_0_None_+0.00",  # current shape, single audio track (audio_ord None)
        "12345_0_2_+0.00",  # current shape, explicit audio_ord
        "12345_842_multi_-1.25",  # multi-audio, negative offset
        "12345_842_multi_+12.50",
    ],
)
def test_our_session_directories_are_swept(name):
    assert _SESSION_DIR_RE.match(name)


@pytest.mark.parametrize(
    "name",
    [
        "backup_2024",  # the class an "optional tail" pattern wrongly matched
        "release_10",
        "important_data_2024",
        "node_modules",
        "logs",
        "plex-hls",
        "12345",  # no start offset — not a session dir
        "12345_0_multi",  # truncated: missing the offset
        "12345_0_multi_1.25",  # offset without its sign
        "snapshot_2024_backup_+1.00",  # session-ish tail, but the key isn't a rating_key
        "backup_2024_multi_+0.00",
        ".config",
    ],
)
def test_foreign_directories_are_left_alone(name):
    assert not _SESSION_DIR_RE.match(name)