feat: search pagination

adds support for getting past the first page of search results

ythdd_inv_tl.py

@@ -23,7 +23,7 @@ import ythdd_struct_parser
 # [✓] /api/v1/stats (stats())
 # [✓] /streams/dQw4w9WgXcQ (does nothing)
 # [✓] /vi/:videoIdXXXX/maxresdefault.jpg
-# [✓] /api/v1/search?q=... (videos and playlists)
+# [✓] /api/v1/search?q=... (videos and playlists), pagination
 # [✓] /api/v1/search/suggestions?q=...&pq=...
 # [✓] /api/v1/channel/:ucid
 # [✓] /api/v1/channel/:ucid/videos, shorts, playlists, streams
@@ -38,6 +38,7 @@ import ythdd_struct_parser
 # [X] /api/v1/videos/:videoIdXXXX does not depend on yt-dlp and offloads stream retrieval elsewhere (making initial response fast)
 # [X] /api/v1/manifest/:videoIdXXXX (above is prerequisite)
 # [X] rewrite the awful lookup logic
+# [X] /api/v1/search?q=... complex filtering options (https://gitea.invidious.io/iv-org/invidious/src/branch/master/src/invidious/search/filters.cr)
 # ----------
 # IDEAS:
 # [*] /api/v1/popular returns last requested videos by the IP (serving as multi-device history?)
@@ -579,14 +580,19 @@ def search(data, req):
 	# ignore paginated requests as we do nothing with the continuation token
 	page = req.args.get('page')
 	if page is not None and page != '1':
-		return send(404, [])
+		try:
+			page = int(page)
+		except:
+			return send(400, {"error": "Wrong page."})
+	else:
+		page = None # when page is "1"
 
 	if (data[-2].lower() != "search" or data[-1].lower() != "") and data[-1].lower() != "search":
 		previous_query = req.args.get('pq')
 		suggestions = ythdd_extractor.WEBgetSearchSuggestions(search_query, previous_query)
 		return send(200, suggestions)
 	
-	results = ythdd_extractor.WEBextractSearchResults(search_query)
+	results = ythdd_extractor.WEBextractSearchResults(search_query, page)
 	results_list = []
 
 	for entry in results: