[gnome-music/wip/mschraal/tageditor-13feb2020: 47/53] coregrilo: Handle a list of keys for writeback

[Marinus Schraal <mschraal src gnome org>]

commit d101fd69103d7c65c8dc3733e54102dd2b7e23e8
Author: Jean Felder <jfelder src gnome org>
Date:   Sat Nov 23 16:37:53 2019 +0100

    coregrilo: Handle a list of keys for writeback
    
    Several metadata keys can be updated with a single call.

 gnomemusic/coregrilo.py | 11 ++++++-----
 gnomemusic/coresong.py  |  6 +++---
 2 files changed, 9 insertions(+), 8 deletions(-)
---
diff --git a/gnomemusic/coregrilo.py b/gnomemusic/coregrilo.py
index 6c8733f4..790fb60c 100644
--- a/gnomemusic/coregrilo.py
+++ b/gnomemusic/coregrilo.py
@@ -185,23 +185,24 @@ class CoreGrilo(GObject.GObject):
         for wrapper in self._wrappers.values():
             wrapper.populate_album_disc_songs(media, discnr, callback)
 
-    def writeback(self, media, key):
-        """Store the values associated with the key.
+    def writeback(self, media, keys):
+        """Store the values associated with the keys.
 
         :param Grl.Media media: A Grilo media item
-        :param int key: a Grilo metadata key
+        :param list keys: A list of Grilo metadata keys
         """
         def _store_metadata_cb(source, media, failed_keys, data, error):
             if error is not None:
                 self._log.warning(
                     "Error {}: {}".format(error.domain, error.message))
             if failed_keys:
-                self._log.warning("Unable to update {}".format(failed_keys))
+                self._log.warning(
+                    "Unable to writeback {}".format(failed_keys))
 
         for wrapper in self._wrappers.values():
             if media.get_source() == wrapper.source.props.source_id:
                 wrapper.props.source.store_metadata(
-                    media, [key], Grl.WriteFlags.NORMAL, _store_metadata_cb,
+                    media, keys, Grl.WriteFlags.NORMAL, _store_metadata_cb,
                     None)
                 break
 
diff --git a/gnomemusic/coresong.py b/gnomemusic/coresong.py
index f8d5d422..ec8d2371 100644
--- a/gnomemusic/coresong.py
+++ b/gnomemusic/coresong.py
@@ -94,7 +94,7 @@ class CoreSong(GObject.GObject):
             return
 
         self.props.media.set_favourite(self._favorite)
-        self._grilo.writeback(self.props.media, Grl.METADATA_KEY_FAVOURITE)
+        self._grilo.writeback(self.props.media, [Grl.METADATA_KEY_FAVOURITE])
 
     @GObject.Property(type=bool, default=False)
     def selected(self):
@@ -128,14 +128,14 @@ class CoreSong(GObject.GObject):
             return
 
         self.props.media.set_play_count(self.props.play_count + 1)
-        self._grilo.writeback(self.props.media, Grl.METADATA_KEY_PLAY_COUNT)
+        self._grilo.writeback(self.props.media, [Grl.METADATA_KEY_PLAY_COUNT])
 
     def set_last_played(self):
         if not self._is_tracker:
             return
 
         self.props.media.set_last_played(GLib.DateTime.new_now_utc())
-        self._grilo.writeback(self.props.media, Grl.METADATA_KEY_LAST_PLAYED)
+        self._grilo.writeback(self.props.media, [Grl.METADATA_KEY_LAST_PLAYED])
 
     def query_musicbrainz_tags(self, callback):
         """Retrieves metadata keys for this CoreSong