Clean up fetch_channel

src/helpers.cr

@@ -540,12 +540,12 @@ def fetch_channel(id, client, db)
 
     video = ChannelVideo.new(video_id, title, published, updated, ucid, author)
 
-    video_array = video.to_a[1..-1]
+    video_array = video.to_a
     args = arg_array(video_array)
 
     # TODO: Update record on conflict
-    db.exec("INSERT INTO channel_videos VALUES (#{arg_array(video.to_a)})\
-      ON CONFLICT (id) DO NOTHING", video.to_a)
+    db.exec("INSERT INTO channel_videos VALUES (#{args})\
+      ON CONFLICT (id) DO NOTHING", video_array)
   end
 
   author = rss.xpath_node("//feed/author/name").not_nil!.content