Add project files.

MangaReader.Core/WebCrawlers/MangaNato/MangaNatoWebCrawler.cs

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+using HtmlAgilityPack;
+using System.Text;
+using System.Web;
+
+namespace MangaReader.Core.WebCrawlers.MangaNato;
+
+public class MangaNatoWebCrawler : MangaWebCrawler
+{
+    public override MangaDTO GetManga(string url)
+    {
+        HtmlDocument document = GetHtmlDocument(url);
+        MangaNatoMangaDocument node = new(document);
+
+        MangaDTO manga = new()
+        {
+            Title = node.TitleNode.InnerText,
+            AlternateTitles = GetAlternateTitles(node.AlternateTitlesNode),
+            Authors = GetAuthors(node.AuthorsNode),
+            Status = GetStatus(node.StatusNode),
+            Genres = GetGenres(node.GenresNode),
+            UpdateDate = GetUpdateDate(node.UpdateDateNode),
+            RatingPercent = GetRatingPercent(node.AverageRatingNode, node.BestRatingNode),
+            Votes = int.Parse(node.VotesNode.InnerText),
+            Views = GetViews(node.ViewsNode),
+            Description = GetTextFromNodes(node.StoryDescriptionTextNodes),
+            Chapters = GetChapters(node.ChapterNodes)
+        };
+
+        return manga;
+    }
+
+    private static List<string> GetAlternateTitles(HtmlNode node)
+    {
+        return node.InnerText.Split(';').Select(x => x.Trim()).ToList();
+    }
+
+    private static List<string> GetAuthors(HtmlNode node)
+    {
+        return node.InnerText.Split('-').Select(x => x.Trim()).ToList();
+    }
+
+    private static MangaStatus GetStatus(HtmlNode node)
+    {
+        return node.InnerText switch
+        {
+            "Ongoing" => MangaStatus.Ongoing,
+            "Completed" => MangaStatus.Complete,
+            _ => MangaStatus.Unknown,
+        };
+    }
+
+    private static List<string> GetGenres(HtmlNode node)
+    {
+        return node.InnerText.Split('-').Select(x => x.Trim()).ToList();
+    }
+
+    private static DateTime GetUpdateDate(HtmlNode node)
+    {
+        List<string> dateAndTime = node.InnerText.Split('-').Select(x => x.Trim()).ToList();
+        DateOnly date = DateOnly.Parse(dateAndTime[0]);
+        TimeOnly time = TimeOnly.Parse(dateAndTime[1]);
+
+        return date.ToDateTime(time);
+    }
+
+    private static long GetViews(HtmlNode node)
+    {
+        string text = node.InnerText;
+
+        if (int.TryParse(text, out int number))
+            return number;
+
+        ReadOnlySpan<char> shortText = text.AsSpan(0, text.Length - 1);
+
+        if (double.TryParse(shortText, out double formattedNumber) == false)
+            return 0;
+
+        char suffix = text[^1];
+        long multiplier = GetMultiplier(suffix);
+
+        return (int)(formattedNumber * multiplier);
+    }
+
+    private static long GetMultiplier(char c)
+    {
+        return c switch
+        {
+            'K' => 1_000,
+            'M' => 1_000_000,
+            'B' => 1_000_000_000,
+            'T' => 1_000_000_000_000,
+            _ => 0,
+        };
+    }
+
+    private static int GetRatingPercent(HtmlNode averageNode, HtmlNode bestNode)
+    {
+        double average = Convert.ToDouble(averageNode.InnerText);
+        double best = Convert.ToDouble(bestNode.InnerText);
+
+        return (int)Math.Round(average / best * 100);
+    }
+
+    private static List<MangaChapterDTO> GetChapters(HtmlNodeCollection chapterNodes)
+    {
+        List<MangaChapterDTO> chapters = [];
+
+        foreach (var node in chapterNodes)
+        {
+            HtmlNode chapterNameNode = node.SelectSingleNode(".//a[contains(@class, 'chapter-name')]");
+            HtmlNode chapterViewNode = node.SelectSingleNode(".//span[contains(@class, 'chapter-view')]");
+            HtmlNode chapterTimeNode = node.SelectSingleNode(".//span[contains(@class, 'chapter-time')]");
+
+            MangaChapterDTO chapter = new()
+            {
+                Number = GetChapterNumber(chapterNameNode),
+                Name = chapterNameNode.InnerText,
+                Url = chapterNameNode.Attributes["href"].Value,
+                Views = GetViews(chapterViewNode),
+                UploadDate = DateTime.Parse(chapterTimeNode.Attributes["title"].Value)
+            };
+
+            chapters.Add(chapter);
+        }
+
+        return chapters;
+    }
+
+    private static float GetChapterNumber(HtmlNode chapterNameNode)
+    {
+        string url = chapterNameNode.Attributes["href"].Value;
+        int index = url.IndexOf("/chapter-");
+
+        if (index == -1)
+            return 0;
+
+        string chapterNumber = url[(index + "/chapter-".Length)..];
+
+        return float.Parse(chapterNumber);
+    }
+
+    private static string GetTextFromNodes(List<HtmlNode> nodes)
+    {
+        StringBuilder stringBuilder = new();
+
+        foreach (HtmlNode node in nodes)
+        {
+            if (node.Name == "br")
+            {
+                stringBuilder.AppendLine();
+            }
+            else
+            {
+                stringBuilder.Append(HttpUtility.HtmlDecode(node.InnerText).Replace("\r\n", "").Trim());
+            }
+        }
+
+        return stringBuilder.ToString();
+    }
+}