Add an optional argument to metadata_published

tubesync/sync/models.py

@@ -1033,8 +1033,9 @@ class Media(models.Model):
         return self.loaded_metadata.get(field, '').strip()
 
     @property
-    def metadata_published(self):
+    def metadata_published(self, timestamp=None):
         published_dt = None
+        if timestamp is None:
             field = self.get_metadata_field('timestamp')
             timestamp = self.loaded_metadata.get(field, None)
         if timestamp is not None: