Add getPlaylist(id) to RemotePlaylistManager

Co-authored-by: Haggai Eran <haggai.eran@gmail.com>

Author: Stypox

app/src/main/java/org/schabi/newpipe/database/playlist/dao/PlaylistRemoteDAO.java

@@ -34,7 +34,7 @@ public interface PlaylistRemoteDAO extends BasicDAO<PlaylistRemoteEntity> {
 
     @Query("SELECT * FROM " + REMOTE_PLAYLIST_TABLE + " WHERE "
             + REMOTE_PLAYLIST_ID + " = :playlistId")
-    Flowable<List<PlaylistRemoteEntity>> getPlaylist(long playlistId);
+    Flowable<PlaylistRemoteEntity> getPlaylist(long playlistId);
 
     @Query("SELECT * FROM " + REMOTE_PLAYLIST_TABLE + " WHERE "
             + REMOTE_PLAYLIST_URL + " = :url AND " + REMOTE_PLAYLIST_SERVICE_ID + " = :serviceId")

app/src/main/java/org/schabi/newpipe/local/playlist/RemotePlaylistManager.java

@@ -26,6 +26,10 @@ public Flowable<List<PlaylistRemoteEntity>> getPlaylists() {
         return playlistRemoteTable.getPlaylists().subscribeOn(Schedulers.io());
     }
 
+    public Flowable<PlaylistRemoteEntity> getPlaylist(final long playlistId) {
+        return playlistRemoteTable.getPlaylist(playlistId).subscribeOn(Schedulers.io());
+    }
+
     public Flowable<List<PlaylistRemoteEntity>> getPlaylist(final PlaylistInfo info) {
         return playlistRemoteTable.getPlaylist(info.getServiceId(), info.getUrl())
                 .subscribeOn(Schedulers.io());