[YouTube Music] Fix uploader and stream count for album/playlist info items

- handles autogenerated albums instead of returning an error for invalid uploader url
- extracts uploader url of playlists too using another method
- getStreamCount() now returns ITEM_COUNT_UNKNOWN because no info is included in the JSON

extractor/src/main/java/org/schabi/newpipe/extractor/services/youtube/extractors/YoutubeMusicAlbumOrPlaylistInfoItemExtractor.java

@@ -5,32 +5,34 @@ import com.grack.nanojson.JsonObject;
 import org.schabi.newpipe.extractor.Image;
 import org.schabi.newpipe.extractor.exceptions.ParsingException;
 import org.schabi.newpipe.extractor.playlist.PlaylistInfoItemExtractor;
-import org.schabi.newpipe.extractor.utils.Utils;
 
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 import java.util.List;
 
-import static org.schabi.newpipe.extractor.ListExtractor.ITEM_COUNT_MORE_THAN_100;
 import static org.schabi.newpipe.extractor.ListExtractor.ITEM_COUNT_UNKNOWN;
 import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.getTextFromObject;
 import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.getImagesFromThumbnailsArray;
 import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.getUrlFromNavigationEndpoint;
 import static org.schabi.newpipe.extractor.services.youtube.linkHandler.YoutubeSearchQueryHandlerFactory.MUSIC_ALBUMS;
-import static org.schabi.newpipe.extractor.services.youtube.linkHandler.YoutubeSearchQueryHandlerFactory.MUSIC_PLAYLISTS;
 import static org.schabi.newpipe.extractor.utils.Utils.isNullOrEmpty;
 
 public class YoutubeMusicAlbumOrPlaylistInfoItemExtractor implements PlaylistInfoItemExtractor {
     private final JsonObject albumOrPlaylistInfoItem;
-    private final JsonArray descriptionElements;
-    private final String searchType;
+    private final JsonObject descriptionElementUploader;
 
     public YoutubeMusicAlbumOrPlaylistInfoItemExtractor(final JsonObject albumOrPlaylistInfoItem,
                                                         final JsonArray descriptionElements,
                                                         final String searchType) {
         this.albumOrPlaylistInfoItem = albumOrPlaylistInfoItem;
-        this.descriptionElements = descriptionElements;
-        this.searchType = searchType;
+
+        if (searchType.equals(MUSIC_ALBUMS)) {
+            // "Album", " • ", uploader, " • ", year
+            this.descriptionElementUploader = descriptionElements.getObject(2);
+        } else {
+            // uploader, " • ", view count
+            this.descriptionElementUploader = descriptionElements.getObject(0);
+        }
     }
 
     @Nonnull
@@ -92,12 +94,7 @@ public class YoutubeMusicAlbumOrPlaylistInfoItemExtractor implements PlaylistInf
 
     @Override
     public String getUploaderName() throws ParsingException {
-        final String name;
-        if (searchType.equals(MUSIC_ALBUMS)) {
-            name = descriptionElements.getObject(2).getString("text");
-        } else {
-            name = descriptionElements.getObject(0).getString("text");
-        }
+        final String name = descriptionElementUploader.getString("text");
 
         if (!isNullOrEmpty(name)) {
             return name;
@@ -109,10 +106,7 @@ public class YoutubeMusicAlbumOrPlaylistInfoItemExtractor implements PlaylistInf
     @Nullable
     @Override
     public String getUploaderUrl() throws ParsingException {
-        if (searchType.equals(MUSIC_PLAYLISTS)) {
-            return null;
-        }
-
+        // first try obtaining the uploader from the menu (will not work for MUSIC_PLAYLISTS though)
         final JsonArray items = albumOrPlaylistInfoItem.getObject("menu")
                 .getObject("menuRenderer")
                 .getArray("items");
@@ -127,7 +121,15 @@ public class YoutubeMusicAlbumOrPlaylistInfoItemExtractor implements PlaylistInf
             }
         }
 
-        throw new ParsingException("Could not get uploader URL");
+        // then try obtaining it from the uploader description element
+        if (descriptionElementUploader.has("navigationEndpoint")) {
+            return getUrlFromNavigationEndpoint(
+                    descriptionElementUploader.getObject("navigationEndpoint"));
+        } else {
+            // if there is no navigationEndpoint for the uploader
+            // then this playlist/album is likely autogenerated
+            return null;
+        }
     }
 
     @Override
@@ -137,21 +139,7 @@ public class YoutubeMusicAlbumOrPlaylistInfoItemExtractor implements PlaylistInf
 
     @Override
     public long getStreamCount() throws ParsingException {
-        if (searchType.equals(MUSIC_ALBUMS)) {
-            return ITEM_COUNT_UNKNOWN;
-        }
-
-        final String count = descriptionElements.getObject(2)
-                .getString("text");
-
-        if (!isNullOrEmpty(count)) {
-            if (count.contains("100+")) {
-                return ITEM_COUNT_MORE_THAN_100;
-            } else {
-                return Long.parseLong(Utils.removeNonDigitCharacters(count));
-            }
-        }
-
-        throw new ParsingException("Could not get stream count");
+        // YouTube Music album and playlist info items don't expose the stream count anywhere...
+        return ITEM_COUNT_UNKNOWN;
     }
 }

extractor/src/test/java/org/schabi/newpipe/extractor/services/youtube/search/YoutubeMusicSearchExtractorTest.java

@@ -57,7 +57,9 @@ public class YoutubeMusicSearchExtractorTest {
     }
 
     public static class MusicAlbums extends DefaultSearchExtractorTest implements InitYoutubeTest {
-        private static final String QUERY = "johnny sellah";
+        // searching for "scenography" on 28/07/2025 returns some autogenerated albums,
+        // and we want to test the extraction of those, too
+        private static final String QUERY = "scenography";
 
         @Override
         protected SearchExtractor createExtractor() throws Exception {