make watched filter nullable dropdown

backend/user/serializers.py

@@ -38,7 +38,7 @@ class UserMeConfigSerializer(serializers.Serializer):
     view_style_downloads = serializers.ChoiceField(choices=["grid", "list"])
     view_style_playlist = serializers.ChoiceField(choices=["grid", "list"])
     grid_items = serializers.IntegerField(max_value=7, min_value=3)
-    hide_watched = serializers.BooleanField()
+    hide_watched = serializers.BooleanField(allow_null=True)
     file_size_unit = serializers.ChoiceField(choices=["binary", "metric"])
     show_ignored_only = serializers.BooleanField()
     show_subed_only = serializers.BooleanField()

backend/user/src/user_config.py

@@ -21,7 +21,7 @@ class UserConfigType(TypedDict, total=False):
     view_style_downloads: str
     view_style_playlist: str
     grid_items: int
-    hide_watched: bool
+    hide_watched: bool | None
     file_size_unit: str
     show_ignored_only: bool
     show_subed_only: bool

backend/video/serializers.py

@@ -112,7 +112,7 @@ class VideoListQuerySerializer(serializers.Serializer):
     playlist = serializers.CharField(required=False)
     channel = serializers.CharField(required=False)
     watch = serializers.ChoiceField(
-        choices=WatchedEnum.values(), required=False
+        choices=WatchedEnum.values(), required=False, allow_null=True
     )
     sort = serializers.ChoiceField(choices=SortEnum.names(), required=False)
     order = serializers.ChoiceField(choices=OrderEnum.values(), required=False)

backend/video/src/query_building.py

@@ -35,7 +35,7 @@ class QueryBuilder:
             must_list.append({"match": {"playlist.keyword": playlist}})
 
         watch = self.request_params.get("watch")
-        if watch:
+        if watch is not None:
             watch_must_list = self.parse_watch(watch)
             must_list.append(watch_must_list)