Fix PlexKodiConnect Play error in rare scenarios (an older PMS version?), where posting playqueues using an uri server:// is not possible and library:// is necessary

resources/lib/playback.py

@@ -235,7 +235,10 @@ def _playback_init(plex_id, plex_type, playqueue, pos):
     playqueue.clear()
     if plex_type != v.PLEX_TYPE_CLIP:
         # Post to the PMS to create a playqueue - in any case due to Companion
-        xml = PF.init_plex_playqueue(plex_id, plex_type, trailers=trailers)
+        xml = PF.init_plex_playqueue(plex_id,
+                                     plex_type,
+                                     xml.get('librarySectionUUID'),
+                                     trailers=trailers)
         if xml is None:
             LOG.error('Could not get a playqueue xml for plex id %s', plex_id)
             # "Play error"

resources/lib/plex_functions.py

@@ -820,7 +820,7 @@ def get_plex_sections():
     return xml
 
 
-def init_plex_playqueue(plex_id, plex_type, trailers=False):
+def init_plex_playqueue(plex_id, plex_type, section_uuid, trailers=False):
     """
     Returns raw API metadata XML dump for a playlist with e.g. trailers.
     """
@@ -839,8 +839,30 @@ def init_plex_playqueue(plex_id, plex_type, trailers=False):
     try:
         xml[0].tag
     except (IndexError, TypeError, AttributeError):
-        LOG.error("Error retrieving metadata for %s", url)
-        return
+        LOG.warn('Need to initialize Plex playqueue the old fashioned way')
+        xml = init_plex_playqueue_old_fashioned(plex_id, section_uuid, url, args)
+    return xml
+
+
+def init_plex_playqueue_old_fashioned(plex_id, section_uuid, url, args):
+    """
+    In rare cases (old PMS version?), the PMS does not allow to add media using
+    an uri
+        server://<machineIdentifier>/com.plexapp.plugins.library/library...
+    We need to use
+        library://<librarySectionUUID>/item/...
+
+    This involves an extra step to grab the librarySectionUUID for plex_id
+    """
+    args['uri'] = 'library://{0}/item/%2Flibrary%2Fmetadata%2F{1}'.format(
+        section_uuid, plex_id)
+    xml = DU().downloadUrl(utils.extend_url(url, args), action_type="POST")
+    try:
+        xml[0].tag
+    except (IndexError, TypeError, AttributeError):
+        LOG.error('Error initializing the playqueue the old fashioned way %s',
+                  utils.extend_url(url, args))
+        xml = None
     return xml