Blacker.Scraper.MangaStream.GetPagesRecursive C# (CSharp) Метод

        private void GetPagesRecursive(HtmlAgilityPack.HtmlNode document, IDictionary<int, string> pages)
        {
            var chapterPages = document.SelectNodes(@"//div[@class=""main-body""]//div[@class=""btn-group""][2]/ul[@class=""dropdown-menu""]/li/a");
            if (chapterPages == null)
            {
                throw new ParserException("Could not find expected elements on website.", document.InnerHtml);
            }

            int addedCount = 0;

            foreach (var pageLink in chapterPages)
            {
                int pageNumber = 0;
                var url = GetFullUrl(pageLink.Attributes["href"].Value);

                if (pages.Any(kvp => kvp.Value == url)) // skip duplicate urls
                    continue;

                if (!Int32.TryParse(Regex.Match(pageLink.InnerText, @"\d+").Value, out pageNumber))
                    _log.Error("Unable to parse page number '" + pageLink.InnerText + "'");

                if (pages.ContainsKey(pageNumber))  // if page is already in dictionary use random number instead
                    pageNumber = Random;

                pages.Add(pageNumber, url);
                addedCount++;
            }

            if (addedCount > 0)
            {
                var pageRecord = pages.OrderByDescending(kvp => kvp.Key).Skip(1).FirstOrDefault();
                if (pageRecord.Equals(default(KeyValuePair<int, string>)))
                    return;

                var nextDocument = WebHelper.GetHtmlDocument(pageRecord.Value);

                GetPagesRecursive(nextDocument, pages);
            }
        }