"""Unit tests for the Apple Music service layer."""

import pytest
from pytest_mock import MockerFixture

from contributor.connectors.apple_music import AppleArtist


@pytest.fixture
def apple_artist():
    return AppleArtist(
        identifier="123456",
        name="Test Artist",
        genres=["Pop", "Rock"],
        url="https://music.apple.com/artist/123456",
    )


@pytest.fixture
def mock_apple_music_client(mocker: MockerFixture):
    return mocker.patch("contributor.logic.service.apple_music._apple_music_client")


class TestArtistSearch:
    @pytest.fixture(autouse=True)
    def _setup(self, mock_apple_music_client):
        self.client = mock_apple_music_client

    def test_returns_artists(self, apple_artist: AppleArtist):
        self.client.search.return_value = [apple_artist]

        from contributor.logic.service.apple_music import artist_search

        result = artist_search(query="test", limit=10, offset=0, localization="en")

        assert result == [apple_artist]

    def test_passes_arguments_to_client(self, apple_artist: AppleArtist):
        self.client.search.return_value = [apple_artist]

        from contributor.logic.service.apple_music import artist_search

        artist_search(query="test query", limit=5, offset=10, localization="fr")

        self.client.search.assert_called_once_with(
            query="test query",
            limit=5,
            offset=10,
            localization="fr",
        )

    def test_returns_empty_list_when_no_results(self):
        self.client.search.return_value = []

        from contributor.logic.service.apple_music import artist_search

        result = artist_search(
            query="nonexistent", limit=10, offset=0, localization=None
        )

        assert result == []


class TestGetArtistById:
    @pytest.fixture(autouse=True)
    def _setup(self, mock_apple_music_client):
        self.client = mock_apple_music_client

    def test_returns_artist(self, apple_artist: AppleArtist):
        self.client.get_artist_by_id.return_value = apple_artist

        from contributor.logic.service.apple_music import get_artist_by_id

        result = get_artist_by_id("123456")

        assert result == apple_artist

    def test_passes_artist_id_to_client(self, apple_artist: AppleArtist):
        self.client.get_artist_by_id.return_value = apple_artist

        from contributor.logic.service.apple_music import get_artist_by_id

        get_artist_by_id("123456")

        self.client.get_artist_by_id.assert_called_once_with(artist_id="123456")

    def test_returns_none_when_not_found(self):
        self.client.get_artist_by_id.return_value = None

        from contributor.logic.service.apple_music import get_artist_by_id

        result = get_artist_by_id("unknown")

        assert result is None