Improve caching and updating of playlist details anxdpanic#1024

- Update playlist details every day
- Cache details of own playlists for later use

resources/lib/youtube_plugin/youtube/client/youtube.py

@@ -883,7 +883,7 @@ def get_channel_sections(self, channel_id, **kwargs):
                                 **kwargs)
 
     def get_playlists_of_channel(self, channel_id, page_token='', **kwargs):
-        params = {'part': 'snippet',
+        params = {'part': 'snippet,status,contentDetails',
                   'maxResults': str(self.max_results())}
         if channel_id == 'mine':
             params['mine'] = True

resources/lib/youtube_plugin/youtube/helper/resource_manager.py

@@ -251,7 +251,7 @@ def get_playlists(self, ids, suppress_errors=False, defer_cache=False):
             result = {}
         else:
             data_cache = context.get_data_cache()
-            result = data_cache.get_items(ids, data_cache.ONE_MONTH)
+            result = data_cache.get_items(ids, data_cache.ONE_DAY)
         to_update = [id_ for id_ in ids
                      if id_ not in result
                      or not result[id_]
@@ -415,6 +415,30 @@ def get_related_playlists(self, channel_id, defer_cache=False):
             return None
         return item.get('contentDetails', {}).get('relatedPlaylists')
 
+    def get_my_playlists(self, channel_id, page_token, defer_cache=False):
+        context = self._context
+        client = self._provider.get_client(context)
+
+        result = client.get_playlists_of_channel(channel_id, page_token)
+        if not result:
+            return None
+
+        new_data = {
+            yt_item['id']: yt_item
+            for yt_item in result.get('items', [])
+            if yt_item
+        }
+        if new_data:
+            context.debug_log and context.log_debug(
+                'ResourceManager.get_my_playlists'
+                ' - Retrieved new data for playlists'
+                '\n\tPlaylist IDs: {ids}'
+                .format(ids=list(new_data))
+            )
+            self.cache_data(new_data, defer=defer_cache)
+
+        return result
+
     def get_videos(self,
                    ids,
                    live_details=False,

resources/lib/youtube_plugin/youtube/provider.py

@@ -470,9 +470,7 @@ def on_channel_playlists(provider, context, re_match):
         else:
             result = False
 
-        json_data = provider.get_client(context).get_playlists_of_channel(
-            channel_id, page_token
-        )
+        json_data = resource_manager.get_my_playlists(channel_id, page_token)
         if not json_data:
             return result