Use youtubei API for trending

src/invidious/helpers/youtube_api.cr

@@ -25,12 +25,14 @@ end
 
 ####################################################################
 # request_youtube_api_browse(continuation)
-# request_youtube_api_browse(browse_id, params)
+# request_youtube_api_browse(browse_id, params, region)
 #
 # Requests the youtubei/v1/browse endpoint with the required headers
-# and POST data in order to get a JSON reply in english US that can
+# and POST data in order to get a JSON reply in english that can
 # be easily parsed.
 #
+# The region can be provided, default is US.
+#
 # The requested data can either be:
 #
 #  - A continuation token (ctoken). Depending on this token's
@@ -49,11 +51,11 @@ def request_youtube_api_browse(continuation : String)
   return _youtube_api_post_json("/youtubei/v1/browse", data)
 end
 
-def request_youtube_api_browse(browse_id : String, params : String)
+def request_youtube_api_browse(browse_id : String, params : String, region : String = "US")
   # JSON Request data, required by the API
   data = {
     "browseId" => browse_id,
-    "context"  => make_youtube_api_context("US"),
+    "context"  => make_youtube_api_context(region),
   }
 
   # Append the additionnal parameters if those were provided

src/invidious/trending.cr

@@ -2,31 +2,19 @@ def fetch_trending(trending_type, region, locale)
   region ||= "US"
   region = region.upcase
 
-  trending = ""
   plid = nil
 
-  if trending_type && trending_type != "Default"
-    if trending_type == "Music"
-      trending_type = 1
-    elsif trending_type == "Gaming"
-      trending_type = 2
-    elsif trending_type == "Movies"
-      trending_type = 3
-    end
-
-    response = YT_POOL.client &.get("/feed/trending?gl=#{region}&hl=en").body
-
-    initial_data = extract_initial_data(response)
-    url = initial_data["contents"]["twoColumnBrowseResultsRenderer"]["tabs"][trending_type]["tabRenderer"]["endpoint"]["commandMetadata"]["webCommandMetadata"]["url"]
-    url = "#{url}&gl=#{region}&hl=en"
-
-    trending = YT_POOL.client &.get(url).body
-    plid = extract_plid(url)
-  else
-    trending = YT_POOL.client &.get("/feed/trending?gl=#{region}&hl=en").body
+  if trending_type == "Music"
+    params = "4gINGgt5dG1hX2NoYXJ0cw%3D%3D"
+  elsif trending_type == "Gaming"
+    params = "4gIcGhpnYW1pbmdfY29ycHVzX21vc3RfcG9wdWxhcg%3D%3D"
+  elsif trending_type == "Movies"
+    params = "4gIKGgh0cmFpbGVycw%3D%3D"
+  else # Default
+    params = ""
   end
 
-  initial_data = extract_initial_data(trending)
+  initial_data = request_youtube_api_browse("FEtrending", params: params, region: region)
   trending = extract_videos(initial_data)
 
   return {trending, plid}