add description

src/ytdl_sub/entries/base_entry.py

@@ -10,6 +10,7 @@ from typing import final
 
 from yt_dlp.utils import sanitize_filename
 
+from ytdl_sub.entries.variables.kwargs import DESCRIPTION
 from ytdl_sub.entries.variables.kwargs import TITLE
 from ytdl_sub.entries.variables.kwargs import WEBPAGE_URL
 
@@ -93,7 +94,7 @@ class BaseEntryVariables:
         str
             The description if it exists. Otherwise, returns an emtpy string.
         """
-        return self.kwargs_get("description", "")
+        return self.kwargs_get(DESCRIPTION, "")
 
 
 # pylint: enable=no-member

src/ytdl_sub/entries/entry_parent.py

@@ -68,20 +68,15 @@ class EntryParent(BaseEntry):
         }
 
     def _parent_variables(self, parent_type: str) -> Dict:
-        if parent_type == ParentType.SOURCE:
-            return {
-                SOURCE_ENTRY: self._kwargs,
-                SOURCE_TITLE: self.title,
-                SOURCE_WEBPAGE_URL: self.webpage_url,
-                SOURCE_UID: self.uid,
-                SOURCE_DESCRIPTION: self.description,
-            }
+        def _(source_key: str, playlist_key: str) -> str:
+            return playlist_key if parent_type == ParentType.SOURCE else source_key
+
         return {
-            PLAYLIST_ENTRY: self._kwargs,
-            PLAYLIST_TITLE: self.title,
-            PLAYLIST_WEBPAGE_URL: self.webpage_url,
-            PLAYLIST_UID: self.uid,
-            PLAYLIST_DESCRIPTION: self.description,
+            _(SOURCE_ENTRY, PLAYLIST_ENTRY): self._kwargs,
+            _(SOURCE_TITLE, PLAYLIST_TITLE): self.title,
+            _(SOURCE_WEBPAGE_URL, PLAYLIST_WEBPAGE_URL): self.webpage_url,
+            _(SOURCE_UID, PLAYLIST_UID): self.uid,
+            _(SOURCE_DESCRIPTION, PLAYLIST_DESCRIPTION): self.description,
         }
 
     def _get_entry_children_variable_list(self, variable_name: str) -> List[str | int]:

src/ytdl_sub/entries/variables/kwargs.py

@@ -36,4 +36,5 @@ PLAYLIST_UID = _("playlist_uid")
 
 EXT = _("ext")
 TITLE = _("title")
+DESCRIPTION = _("description")
 WEBPAGE_URL = _("webpage_url")