public override List <IRCResponse> GetResponse(BotMessage message) { if (message.Type != "PRIVMSG" || message.TargetType != IRCMessage.TargetTypes.CHANNEL || ChannelList.ChannelHasMode(message.ReplyTo, 'U')) { return(null); } Match match = Regex.Match(message.MessageString, @"https?://[^\s]+", RegexOptions.IgnoreCase); if (!match.Success) { return(null); } if (Regex.IsMatch(match.Value, @"\.(jpe?g|gif|png|bmp)$")) { return(null); } string response = null; Match youtubeMatch = Regex.Match(match.Value, @"www\.youtube\.com/watch\?v=([^&]+)"); if (youtubeMatch.Success) { response = FollowYouTube(youtubeMatch.Groups[1].Value); } else { response = FollowStandard(match.Value); } if (response == null) { return(null); } return(new List <IRCResponse>() { new IRCResponse(ResponseType.Say, response, message.ReplyTo) }); }