from lyra_worker.registry import build_similarity_sources
from lyra_worker.similarity._lastfm import LastfmSource
from lyra_worker.similarity._listenbrainz import ListenBrainzSource


def test_build_returns_listenbrainz_by_default():
    sources = build_similarity_sources({})
    assert len(sources) == 1
    assert isinstance(sources[0], ListenBrainzSource)
    assert sources[0].name == "listenbrainz"


def test_base_url_override_from_config():
    src = build_similarity_sources({"discover.listenBrainzUrl": "http://lb.local"})[0]
    assert src._base == "http://lb.local"


def test_lastfm_added_when_api_key_configured():
    sources = build_similarity_sources({"lastfm.api_key": "secret-key"})
    names = [s.name for s in sources]
    assert names == ["listenbrainz", "lastfm"]
    lastfm = next(s for s in sources if s.name == "lastfm")
    assert isinstance(lastfm, LastfmSource)
    assert lastfm._key == "secret-key"


def test_lastfm_omitted_without_api_key():
    sources = build_similarity_sources({})
    assert all(s.name != "lastfm" for s in sources)