from django.urls import reverse

from funkwhale_api.instance import stats


def test_can_get_stats_via_api(db, api_client, mocker):
    stats = {
        'foo': 'bar'
    }
    mocker.patch('funkwhale_api.instance.stats.get', return_value=stats)
    url = reverse('api:v1:instance:stats')
    response = api_client.get(url)
    assert response.data == stats


def test_get_users(mocker):
    mocker.patch(
        'funkwhale_api.users.models.User.objects.count', return_value=42)

    assert stats.get_users() == 42


def test_get_music_duration(factories):
    factories['music.TrackFile'].create_batch(size=5, duration=360)

    # duration is in hours
    assert stats.get_music_duration() == 0.5


def test_get_listenings(mocker):
    mocker.patch(
        'funkwhale_api.history.models.Listening.objects.count',
         return_value=42)
    assert stats.get_listenings() == 42


def test_get_track_favorites(mocker):
    mocker.patch(
        'funkwhale_api.favorites.models.TrackFavorite.objects.count',
         return_value=42)
    assert stats.get_track_favorites() == 42


def test_get_tracks(mocker):
    mocker.patch(
        'funkwhale_api.music.models.Track.objects.count',
         return_value=42)
    assert stats.get_tracks() == 42


def test_get_albums(mocker):
    mocker.patch(
        'funkwhale_api.music.models.Album.objects.count',
         return_value=42)
    assert stats.get_albums() == 42


def test_get_artists(mocker):
    mocker.patch(
        'funkwhale_api.music.models.Artist.objects.count',
         return_value=42)
    assert stats.get_artists() == 42


def test_get(mocker):
    keys = [
        'users',
        'tracks',
        'albums',
        'artists',
        'track_favorites',
        'listenings',
        'music_duration',
    ]
    mocks = [
        mocker.patch.object(stats, 'get_{}'.format(k), return_value=i)
        for i, k in enumerate(keys)
    ]

    expected = {
        k: i for i, k in enumerate(keys)
    }

    assert stats.get() == expected