Move Subsonic getArtistInfo2 serialization to serializer

Also fixed JSON serialization by not using lists for the single value fields.

Part-of: <https://dev.funkwhale.audio/funkwhale/funkwhale/-/merge_requests/2695>

api/funkwhale_api/subsonic/serializers.py

@@ -7,6 +7,8 @@ from funkwhale_api.history import models as history_models
 from funkwhale_api.music import models as music_models
 from funkwhale_api.music import utils as music_utils
 
+from .renderers import TagValue
+
 
 def to_subsonic_date(date):
     """
@@ -103,6 +105,23 @@ class GetArtistSerializer(serializers.Serializer):
         return payload
 
 
+class GetArtistInfo2Serializer(serializers.Serializer):
+    def to_representation(self, artist):
+        payload = {}
+        if artist.mbid:
+            payload["musicBrainzId"] = TagValue(artist.mbid)
+        if artist.attachment_cover:
+            payload["mediumImageUrl"] = TagValue(
+                artist.attachment_cover.download_url_medium_square_crop
+            )
+            payload["largeImageUrl"] = TagValue(
+                artist.attachment_cover.download_url_large_square_crop
+            )
+        if artist.description:
+            payload["biography"] = TagValue(artist.description.rendered)
+        return payload
+
+
 def get_track_data(album, track, upload):
     data = {
         "id": track.pk,

api/funkwhale_api/subsonic/views.py

@@ -269,19 +269,8 @@ class SubsonicViewSet(viewsets.GenericViewSet):
     @find_object(music_models.Artist.objects.all(), filter_playable=True)
     def get_artist_info2(self, request, *args, **kwargs):
         artist = kwargs.pop("obj")
-        artist_info = {}
+        data = serializers.GetArtistInfo2Serializer(artist).data
-        if artist.mbid:
+        payload = {"artistInfo2": data}
-            artist_info["musicBrainzId"] = [str(artist.mbid)]
-        if artist.attachment_cover:
-            artist_info["mediumImageUrl"] = [
-                artist.attachment_cover.download_url_medium_square_crop
-            ]
-            artist_info["largeImageUrl"] = [
-                artist.attachment_cover.download_url_large_square_crop
-            ]
-        if artist.description:
-            artist_info["biography"] = [artist.description.rendered]
-        payload = {"artistInfo2": artist_info}
 
         return response.Response(payload, status=200)
 

api/tests/subsonic/test_serializers.py

@@ -4,7 +4,7 @@ import pytest
 from django.db.models.aggregates import Count
 
 from funkwhale_api.music import models as music_models
-from funkwhale_api.subsonic import serializers
+from funkwhale_api.subsonic import renderers, serializers
 
 
 @pytest.mark.parametrize(
@@ -150,6 +150,24 @@ def test_get_artist_serializer(factories):
     assert serializers.GetArtistSerializer(artist).data == expected
 
 
+def test_get_artist_info_2_serializer(factories):
+    content = factories["common.Content"]()
+    artist = factories["music.Artist"](with_cover=True, description=content)
+
+    expected = {
+        "musicBrainzId": artist.mbid,
+        "mediumImageUrl": renderers.TagValue(
+            artist.attachment_cover.download_url_medium_square_crop
+        ),
+        "largeImageUrl": renderers.TagValue(
+            artist.attachment_cover.download_url_large_square_crop
+        ),
+        "biography": renderers.TagValue(artist.description.rendered),
+    }
+
+    assert serializers.GetArtistInfo2Serializer(artist).data == expected
+
+
 @pytest.mark.parametrize(
     "mimetype, extension, expected",
     [