feat: search suggestions

ythdd_extractor.py

@@ -343,3 +343,36 @@ def WEBextractSearchResults(search_query: str) -> list:
 	results = safeTraverse(results, ["contents", "twoColumnSearchResultsRenderer", "primaryContents", "sectionListRenderer", "contents", 0, "itemSectionRenderer", "contents"], default=[])
 
 	return results
+
+def WEBgetSearchSuggestions(query: str, previous_query: str = '') -> list:
+	# Takes in a search query and returns relevant suggestions.
+	# Can optionally take the previous query but that's rather novel and
+	# not supported across players nor invidious API itself.
+	params = {
+    	'ds': 'yt',
+    	'hl': 'en', # host language
+    	'gl': 'us', # geolocation
+    	'client': 'youtube',
+    	'gs_ri': 'youtube',
+    	'q': str(query), # query
+    	'pq': str(previous_query) if previous_query is not None else '' # previous query
+	}
+
+	response = requests.get(
+    	'https://suggestqueries-clients6.youtube.com/complete/search',
+    	params=params,
+    	headers=stage2_headers
+	)
+	# can break anytime but hopefully the tiny speed gain will make up for it
+	results = response.text[23 + len(query):]
+	results = results[:results.rfind("{") - 1]
+	results = json.loads(results)
+
+	suggestions = []
+	for result in results:
+		suggestions.append(result[0])
+
+	return {
+		"query": query,
+		"suggestions": suggestions
+	}

ythdd_inv_tl.py

@@ -642,8 +642,9 @@ def search(data, req):
 
 	if (data[-2].lower() != "search" or data[-1].lower() != "") and data[-1].lower() != "search":
 		print(f"'{data[-2]}', '{data[-1]}'")
-		print("search suggestions are not yet supported")
-		return send(501, {"status": "error", "msg": "search suggestions not supported in this version of ythdd", "data": []})
+		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_list = []