270 lines
14 KiB
C#
270 lines
14 KiB
C#
using System.Globalization;
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using System.IO.Compression;
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using System.Net;
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using System.Runtime.InteropServices;
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using System.Text.RegularExpressions;
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using Tranga.TrangaTasks;
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using static System.IO.UnixFileMode;
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namespace Tranga.Connectors;
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/// <summary>
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/// Base-Class for all Connectors
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/// Provides some methods to be used by all Connectors, as well as a DownloadClient
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/// </summary>
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public abstract class Connector
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{
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protected TrangaSettings settings { get; }
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internal DownloadClient downloadClient { get; init; } = null!;
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protected Connector(TrangaSettings settings)
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{
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this.settings = settings;
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if (!Directory.Exists(settings.coverImageCache))
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Directory.CreateDirectory(settings.coverImageCache);
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}
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public abstract string name { get; } //Name of the Connector (e.g. Website)
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public Publication[] GetPublications(ref HashSet<Publication> publicationCollection, string publicationTitle = "")
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{
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Publication[] ret = GetPublicationsInternal(publicationTitle);
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foreach (Publication p in ret)
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publicationCollection.Add(p);
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return ret;
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}
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/// <summary>
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/// Returns all Publications with the given string.
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/// If the string is empty or null, returns all Publication of the Connector
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/// </summary>
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/// <param name="publicationTitle">Search-Query</param>
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/// <returns>Publications matching the query</returns>
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protected abstract Publication[] GetPublicationsInternal(string publicationTitle = "");
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/// <summary>
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/// Returns all Chapters of the publication in the provided language.
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/// If the language is empty or null, returns all Chapters in all Languages.
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/// </summary>
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/// <param name="publication">Publication to get Chapters for</param>
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/// <param name="language">Language of the Chapters</param>
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/// <returns>Array of Chapters matching Publication and Language</returns>
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public abstract Chapter[] GetChapters(Publication publication, string language = "");
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/// <summary>
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/// Updates the available Chapters of a Publication
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/// </summary>
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/// <param name="publication">Publication to check</param>
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/// <param name="language">Language to receive chapters for</param>
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/// <param name="collection"></param>
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/// <returns>List of Chapters that were previously not in collection</returns>
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public List<Chapter> GetNewChaptersList(Publication publication, string language, ref HashSet<Publication> collection)
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{
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Chapter[] newChapters = this.GetChapters(publication, language);
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collection.Add(publication);
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NumberFormatInfo decimalPoint = new (){ NumberDecimalSeparator = "." };
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settings.logger?.WriteLine(this.GetType().ToString(), "Checking for duplicates");
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List<Chapter> newChaptersList = newChapters.Where(nChapter =>
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float.Parse(nChapter.chapterNumber, decimalPoint) > publication.ignoreChaptersBelow &&
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!nChapter.CheckChapterIsDownloaded(settings.downloadLocation)).ToList();
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settings.logger?.WriteLine(this.GetType().ToString(), $"{newChaptersList.Count} new chapters.");
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return newChaptersList;
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}
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public Chapter[] SelectChapters(Publication publication, string searchTerm, string? language = null)
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{
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Chapter[] availableChapters = this.GetChapters(publication, language??"en");
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Regex volumeRegex = new ("((v(ol)*(olume)*)+ *([0-9]+(-[0-9]+)?){1})", RegexOptions.IgnoreCase);
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Regex chapterRegex = new ("((c(h)*(hapter)*)+ *([0-9]+(-[0-9]+)?){1})", RegexOptions.IgnoreCase);
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Regex singleResultRegex = new("([0-9]+)", RegexOptions.IgnoreCase);
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Regex rangeResultRegex = new("([0-9]+(-[0-9]+))", RegexOptions.IgnoreCase);
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Regex allRegex = new("a(ll)?", RegexOptions.IgnoreCase);
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if (volumeRegex.IsMatch(searchTerm) && chapterRegex.IsMatch(searchTerm))
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{
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string volume = singleResultRegex.Match(volumeRegex.Match(searchTerm).Value).Value;
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string chapter = singleResultRegex.Match(chapterRegex.Match(searchTerm).Value).Value;
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return availableChapters.Where(aCh => aCh.volumeNumber is not null &&
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aCh.volumeNumber.Equals(volume, StringComparison.InvariantCultureIgnoreCase) &&
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aCh.chapterNumber.Equals(chapter, StringComparison.InvariantCultureIgnoreCase))
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.ToArray();
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}
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else if (volumeRegex.IsMatch(searchTerm))
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{
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string volume = volumeRegex.Match(searchTerm).Value;
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if (rangeResultRegex.IsMatch(volume))
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{
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string range = rangeResultRegex.Match(volume).Value;
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int start = Convert.ToInt32(range.Split('-')[0]);
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int end = Convert.ToInt32(range.Split('-')[1]);
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return availableChapters.Where(aCh => aCh.volumeNumber is not null &&
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Convert.ToInt32(aCh.volumeNumber) >= start &&
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Convert.ToInt32(aCh.volumeNumber) <= end).ToArray();
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}
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else if (singleResultRegex.IsMatch(volume))
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{
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string volumeNumber = singleResultRegex.Match(volume).Value;
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return availableChapters.Where(aCh =>
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aCh.volumeNumber is not null &&
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aCh.volumeNumber.Equals(volumeNumber, StringComparison.InvariantCultureIgnoreCase)).ToArray();
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}
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}
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else if (chapterRegex.IsMatch(searchTerm))
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{
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string chapter = volumeRegex.Match(searchTerm).Value;
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if (rangeResultRegex.IsMatch(chapter))
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{
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string range = rangeResultRegex.Match(chapter).Value;
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int start = Convert.ToInt32(range.Split('-')[0]);
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int end = Convert.ToInt32(range.Split('-')[1]);
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return availableChapters.Where(aCh => Convert.ToInt32(aCh.chapterNumber) >= start &&
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Convert.ToInt32(aCh.chapterNumber) <= end).ToArray();
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}
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else if (singleResultRegex.IsMatch(chapter))
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{
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string chapterNumber = singleResultRegex.Match(chapter).Value;
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return availableChapters.Where(aCh =>
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aCh.chapterNumber.Equals(chapterNumber, StringComparison.InvariantCultureIgnoreCase)).ToArray();
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}
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}
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else
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{
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if (rangeResultRegex.IsMatch(searchTerm))
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{
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int start = Convert.ToInt32(searchTerm.Split('-')[0]);
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int end = Convert.ToInt32(searchTerm.Split('-')[1]);
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return availableChapters[start..(end + 1)];
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}
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else if(singleResultRegex.IsMatch(searchTerm))
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return new [] { availableChapters[Convert.ToInt32(searchTerm)] };
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else if (allRegex.IsMatch(searchTerm))
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return availableChapters;
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}
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return Array.Empty<Chapter>();
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}
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/// <summary>
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/// Retrieves the Chapter (+Images) from the website.
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/// Should later call DownloadChapterImages to retrieve the individual Images of the Chapter and create .cbz archive.
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/// </summary>
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/// <param name="publication">Publication that contains Chapter</param>
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/// <param name="chapter">Chapter with Images to retrieve</param>
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/// <param name="parentTask">Will be used for progress-tracking</param>
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/// <param name="cancellationToken"></param>
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public abstract HttpStatusCode DownloadChapter(Publication publication, Chapter chapter, DownloadChapterTask parentTask, CancellationToken? cancellationToken = null);
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/// <summary>
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/// Copies the already downloaded cover from cache to downloadLocation
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/// </summary>
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/// <param name="publication">Publication to retrieve Cover for</param>
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/// <param name="settings">TrangaSettings</param>
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public void CopyCoverFromCacheToDownloadLocation(Publication publication, TrangaSettings settings)
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{
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settings.logger?.WriteLine(this.GetType().ToString(), $"Cloning cover {publication.sortName} -> {publication.internalId}");
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//Check if Publication already has a Folder and cover
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string publicationFolder = publication.CreatePublicationFolder(settings.downloadLocation);
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DirectoryInfo dirInfo = new (publicationFolder);
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if (dirInfo.EnumerateFiles().Any(info => info.Name.Contains("cover", StringComparison.InvariantCultureIgnoreCase)))
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{
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settings.logger?.WriteLine(this.GetType().ToString(), $"Cover exists {publication.sortName}");
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return;
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}
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string fileInCache = Path.Join(settings.coverImageCache, publication.coverFileNameInCache);
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string newFilePath = Path.Join(publicationFolder, $"cover.{Path.GetFileName(fileInCache).Split('.')[^1]}" );
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settings.logger?.WriteLine(this.GetType().ToString(), $"Cloning cover {fileInCache} -> {newFilePath}");
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File.Copy(fileInCache, newFilePath, true);
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if(RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
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File.SetUnixFileMode(newFilePath, GroupRead | GroupWrite | OtherRead | OtherWrite | UserRead | UserWrite);
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}
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/// <summary>
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/// Downloads Image from URL and saves it to the given path(incl. fileName)
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/// </summary>
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/// <param name="imageUrl"></param>
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/// <param name="fullPath"></param>
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/// <param name="requestType">RequestType for Rate-Limit</param>
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/// <param name="referrer">referrer used in html request header</param>
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private HttpStatusCode DownloadImage(string imageUrl, string fullPath, byte requestType, string? referrer = null)
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{
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DownloadClient.RequestResult requestResult = downloadClient.MakeRequest(imageUrl, requestType, referrer);
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if ((int)requestResult.statusCode < 200 || (int)requestResult.statusCode >= 300 || requestResult.result == Stream.Null)
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return requestResult.statusCode;
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byte[] buffer = new byte[requestResult.result.Length];
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requestResult.result.ReadExactly(buffer, 0, buffer.Length);
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File.WriteAllBytes(fullPath, buffer);
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return requestResult.statusCode;
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}
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/// <summary>
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/// Downloads all Images from URLs, Compresses to zip(cbz) and saves.
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/// </summary>
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/// <param name="imageUrls">List of URLs to download Images from</param>
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/// <param name="saveArchiveFilePath">Full path to save archive to (without file ending .cbz)</param>
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/// <param name="parentTask">Used for progress tracking</param>
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/// <param name="comicInfoPath">Path of the generate Chapter ComicInfo.xml, if it was generated</param>
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/// <param name="requestType">RequestType for RateLimits</param>
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/// <param name="referrer">Used in http request header</param>
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/// <param name="cancellationToken"></param>
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protected HttpStatusCode DownloadChapterImages(string[] imageUrls, string saveArchiveFilePath, byte requestType, DownloadChapterTask parentTask, string? comicInfoPath = null, string? referrer = null, CancellationToken? cancellationToken = null)
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{
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if (cancellationToken?.IsCancellationRequested ?? false)
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return HttpStatusCode.RequestTimeout;
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settings.logger?.WriteLine("Connector", $"Downloading Images for {saveArchiveFilePath}");
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//Check if Publication Directory already exists
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string directoryPath = Path.GetDirectoryName(saveArchiveFilePath)!;
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if (!Directory.Exists(directoryPath))
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Directory.CreateDirectory(directoryPath);
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if (File.Exists(saveArchiveFilePath)) //Don't download twice.
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return HttpStatusCode.OK;
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//Create a temporary folder to store images
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string tempFolder = Directory.CreateTempSubdirectory().FullName;
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int chapter = 0;
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//Download all Images to temporary Folder
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foreach (string imageUrl in imageUrls)
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{
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string[] split = imageUrl.Split('.');
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string extension = split[^1];
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settings.logger?.WriteLine("Connector", $"Downloading Image {chapter + 1:000}/{imageUrls.Length:000} {parentTask.publication.sortName} {parentTask.publication.internalId} Vol.{parentTask.chapter.volumeNumber} Ch.{parentTask.chapter.chapterNumber} {parentTask.progress:P2}");
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HttpStatusCode status = DownloadImage(imageUrl, Path.Join(tempFolder, $"{chapter++}.{extension}"), requestType, referrer);
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if ((int)status < 200 || (int)status >= 300)
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return status;
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parentTask.IncrementProgress(1.0 / imageUrls.Length);
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if (cancellationToken?.IsCancellationRequested ?? false)
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return HttpStatusCode.RequestTimeout;
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}
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if(comicInfoPath is not null)
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File.Copy(comicInfoPath, Path.Join(tempFolder, "ComicInfo.xml"));
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settings.logger?.WriteLine("Connector", $"Creating archive {saveArchiveFilePath}");
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//ZIP-it and ship-it
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ZipFile.CreateFromDirectory(tempFolder, saveArchiveFilePath);
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if(RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
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File.SetUnixFileMode(saveArchiveFilePath, GroupRead | GroupWrite | OtherRead | OtherWrite | UserRead | UserWrite);
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Directory.Delete(tempFolder, true); //Cleanup
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return HttpStatusCode.OK;
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}
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protected string SaveCoverImageToCache(string url, byte requestType)
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{
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string[] split = url.Split('/');
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string filename = split[^1];
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string saveImagePath = Path.Join(settings.coverImageCache, filename);
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if (File.Exists(saveImagePath))
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return filename;
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DownloadClient.RequestResult coverResult = downloadClient.MakeRequest(url, requestType);
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using MemoryStream ms = new();
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coverResult.result.CopyTo(ms);
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File.WriteAllBytes(saveImagePath, ms.ToArray());
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settings.logger?.WriteLine(this.GetType().ToString(), $"Saving image to {saveImagePath}");
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return filename;
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}
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} |