Matcher: Musicbrainz: Support more formats for release dates

matcher/matcher/providers/musicbrainz.py

@@ -186,10 +186,16 @@ def _get_album(self, album_id: str) -> Any | None:
         )
 
     def _get_album_release_date(self, album: Any) -> date | None:
-        try:
-            return datetime.strptime(album["first-release-date"], "%Y-%m-%d").date()
-        except Exception:
-            pass
+        str_release_date = album.get("first-release-date")
+        if not str_release_date:
+            return None
+        for format in ["%Y-%m-%d", "%Y-%m", "%Y"]:
+            try:
+                parsed = datetime.strptime(str_release_date, format)
+                if parsed:
+                    return parsed.date()
+            except Exception:
+                continue
 
     def _get_album_genres(self, album: Any) -> List[str] | None:
         try:

matcher/tests/providers/musicbrainz.py

@@ -101,6 +101,15 @@ def test_get_album_release_date_and_genres_and_type(self):
         type = provider.get_album_type(album)
         self.assertIs(AlbumType.STUDIO, type)
 
+    def test_get_album_release_date_month_only(self):
+        provider: MusicBrainzProvider = (
+            Context().get().get_provider(MusicBrainzProvider)
+        )  # pyright: ignore
+        album = provider.get_album("88f4aea6-617a-305b-ab3d-9433dc2d5c6f")
+        self.assertIsNotNone(album)
+        release_date = provider.get_album_release_date(album)
+        self.assertEqual(release_date, datetime.date(1994, 11, 1))
+
     def test_get_album_type(self):
         scenarios: List[Tuple[str, AlbumType]] = [
             # Massive Attack - No Protection