Removed TaskExecutor

TrangaTask is now abstract
TrangaTask implements Execute Method, that is now called instead of TaskExecutor
Created inheriting classes of TrangaTask: UpdateKomgaLibraryTask, DownloadNewChaptersTask

Tranga/TrangaTasks/DownloadNewChaptersTask.cs

@@ -0,0 +1,46 @@
+namespace Tranga.TrangaTasks;
+
+public class DownloadNewChaptersTask : TrangaTask
+{
+    public DownloadNewChaptersTask(Task task, string connectorName, Publication publication, TimeSpan reoccurrence, string language = "en") : base(task, connectorName, publication, reoccurrence, language)
+    {
+    }
+
+    public override void Execute(TaskManager taskManager)
+    {
+        Publication pub = (Publication)this.publication!;
+        Connector connector = taskManager.GetConnector(this.connectorName);
+
+        //Check if Publication already has a Folder
+        string publicationFolder = Path.Join(connector.downloadLocation, pub.folderName);
+        if(!Directory.Exists(publicationFolder))
+            Directory.CreateDirectory(publicationFolder);
+        List<Chapter> newChapters = UpdateChapters(connector, pub, language!, ref taskManager._chapterCollection);
+
+        connector.CopyCoverFromCacheToDownloadLocation(pub, taskManager.settings);
+        
+        pub.SaveSeriesInfoJson(connector.downloadLocation);
+
+        foreach(Chapter newChapter in newChapters)
+            connector.DownloadChapter(pub, newChapter);
+    }
+    
+    /// <summary>
+    /// Updates the available Chapters of a Publication
+    /// </summary>
+    /// <param name="connector">Connector to use</param>
+    /// <param name="publication">Publication to check</param>
+    /// <param name="language">Language to receive chapters for</param>
+    /// <param name="chapterCollection"></param>
+    /// <returns>List of Chapters that were previously not in collection</returns>
+    private static List<Chapter> UpdateChapters(Connector connector, Publication publication, string language, ref Dictionary<Publication, List<Chapter>> chapterCollection)
+    {
+        List<Chapter> newChaptersList = new();
+        chapterCollection.TryAdd(publication, newChaptersList); //To ensure publication is actually in collection
+        
+        Chapter[] newChapters = connector.GetChapters(publication, language);
+        newChaptersList = newChapters.Where(nChapter => !connector.CheckChapterIsDownloaded(publication, nChapter)).ToList();
+        
+        return newChaptersList;
+    }
+}

Tranga/TrangaTasks/UpdateKomgaLibraryTask.cs

@@ -0,0 +1,19 @@
+namespace Tranga.TrangaTasks;
+
+public class UpdateKomgaLibraryTask : TrangaTask
+{
+    public UpdateKomgaLibraryTask(Task task, TimeSpan reoccurrence) : base(task, null, null, reoccurrence)
+    {
+    }
+
+    public override void Execute(TaskManager taskManager)
+    {
+        if (taskManager.komga is null)
+            return;
+        Komga komga = taskManager.komga;
+
+        Komga.KomgaLibrary[] allLibraries = komga.GetLibraries();
+        foreach (Komga.KomgaLibrary lib in allLibraries)
+            komga.UpdateLibrary(lib.id);
+    }
+}