"""Characterize album labeling (donor: album_label, fit_label; webapp.query.album_of
mirrors album_label — asserted identical here)."""
from pathlib import Path

import photo_analyzer as pa
from webapp import query


def test_album_label_leaf_folder_relative():
    lib = Path("/lib")
    assert pa.album_label(Path("/lib/Urlaub/Rom/a.jpg"), lib) == "Urlaub/Rom"
    assert pa.album_label(Path("/lib/Urlaub/Venedig/a.jpg"), lib) == "Urlaub/Venedig"
    assert pa.album_label(Path("/lib/a.jpg"), lib) == "(root)"
    assert pa.album_label(Path("/elsewhere/x/a.jpg"), lib) == "x", \
        "outside library → bare parent name"
    assert pa.album_label(Path("/lib/x/a.jpg"), None) == "x"


def test_webapp_album_of_mirrors_album_label():
    lib = Path("/lib")
    for p in ("/lib/Urlaub/Rom/a.jpg", "/lib/a.jpg", "/other/x/a.jpg"):
        assert query.album_of(p, lib) == pa.album_label(Path(p), lib), p


def test_albums_service_album_label_matches_donor():
    # Parity: the extracted single implementation (US03-01) matches the donor rule
    # (donor_ledger.yaml: pa-album-label, wa-album-of). The service takes a tuple of
    # library roots; the donor takes one Path.
    from photo_pipeline.services.albums import album_label

    lib = Path("/lib")
    for p in ("/lib/Urlaub/Rom/a.jpg", "/lib/a.jpg", "/other/x/a.jpg", "/lib/x/y/a.jpg"):
        assert album_label(p, (lib,)) == pa.album_label(Path(p), lib), p
    # No configured roots → bare parent name, like the donor with library=None.
    assert album_label("/lib/x/a.jpg", ()) == pa.album_label(Path("/lib/x/a.jpg"), None)


def test_fit_label_left_truncates():
    assert pa.fit_label("short", 10) == "short"
    assert pa.fit_label("Urlaub/Somewhere/Rom", 8) == "…ere/Rom"
    assert len(pa.fit_label("Urlaub/Somewhere/Rom", 8)) == 8