[skeb] implement 'filters' option (#2945)

docs/configuration.rst

@@ -2208,6 +2208,18 @@ Description
     Download thumbnails.
 
 
+extractor.skeb.search.filters
+-----------------------------
+Type
+    ``list`` or ``string``
+Default
+    ``["genre:art", "genre:voice", "genre:novel", "genre:video", "genre:music", "genre:correction"]``
+Example
+    ``"genre:music OR genre:voice"``
+Description
+    Filters used during searches.
+
+
 extractor.smugmug.videos
 ------------------------
 Type

docs/gallery-dl.conf

@@ -257,6 +257,7 @@
         "skeb":
         {
             "article": false,
+            "filters": null,
             "sent-requests": false,
             "thumbnails": false
         },

gallery_dl/extractor/skeb.py

@@ -253,10 +253,15 @@ class SkebSearchExtractor(SkebExtractor):
             "x-algolia-application-id": "HB1JT3KRE9",
         }
 
+        filters = self.config("filters")
+        if filters is None:
+            filters = ("genre:art OR genre:voice OR genre:novel OR "
+                       "genre:video OR genre:music OR genre:correction")
+        elif not isinstance(filters, str):
+            filters = " OR ".join(filters)
+
         page = 0
-        pams = ("hitsPerPage=40&filters=genre%3Aart%20OR%20genre%3Avoice%20OR"
+        pams = "hitsPerPage=40&filters=" + text.quote(filters) + "&page="
-                "%20genre%3Anovel%20OR%20genre%3Avideo%20OR%20genre%3Amusic%2"
-                "0OR%20genre%3Acorrection&page=")
 
         request = {
             "indexName": "Request",