Tranga/Manga.cs

@@ -67,7 +67,7 @@ public struct Manga
         while (this.folderName.EndsWith('.'))
             this.folderName = this.folderName.Substring(0, this.folderName.Length - 1);
         string onlyLowerLetters = string.Concat(this.sortName.ToLower().Where(Char.IsLetter));
-        this.internalId = DateTime.Now.Ticks.ToString();
+        this.internalId = Convert.ToBase64String(Encoding.ASCII.GetBytes($"{onlyLowerLetters}{this.year}"));
         this.ignoreChaptersBelow = ignoreChaptersBelow ?? 0f;
         this.latestChapterDownloaded = 0;
         this.latestChapterAvailable = 0;

Tranga/MangaConnectors/MangaDex.cs

@@ -243,7 +243,7 @@ public class MangaDex : MangaConnector
                     continue;
                 }
                 
-                if(chapterNum is not "null" && !chapters.Any(chp => chp.volumeNumber.Equals(volume) && chp.chapterNumber.Equals(chapterNum)))
+                if(chapterNum is not "null")
                     chapters.Add(new Chapter(manga, title, volume, chapterNum, chapterId));
             }
         }

Tranga/Server.cs

@@ -63,11 +63,10 @@ public class Server : GlobalBase
     {
         HttpListenerRequest request = context.Request;
         HttpListenerResponse response = context.Response;
-        if (request.Url!.LocalPath.Contains("favicon"))
-        {
+        if(request.HttpMethod == "OPTIONS")
+            SendResponse(HttpStatusCode.OK, context.Response);
+        if(request.Url!.LocalPath.Contains("favicon"))
             SendResponse(HttpStatusCode.NoContent, response);
-            return;
-        }
 
         switch (request.HttpMethod)
         {
@@ -80,9 +79,6 @@ public class Server : GlobalBase
             case "DELETE":
                 HandleDelete(request, response);
                 break;
-            case "OPTIONS": 
-                SendResponse(HttpStatusCode.OK, context.Response);
-                break;
             default: 
                 SendResponse(HttpStatusCode.BadRequest, response);
                 break;
@@ -711,15 +707,14 @@ public class Server : GlobalBase
     private void SendResponse(HttpStatusCode statusCode, HttpListenerResponse response, object? content = null)
     {
         //Log($"Response: {statusCode} {content}");
-
         response.StatusCode = (int)statusCode;
         response.AddHeader("Access-Control-Allow-Headers", "Content-Type, Accept, X-Requested-With");
         response.AddHeader("Access-Control-Allow-Methods", "GET, POST, DELETE");
         response.AddHeader("Access-Control-Max-Age", "1728000");
         response.AppendHeader("Access-Control-Allow-Origin", "*");
+
         try
         {
-            
             if (content is not Stream)
             {
                 response.ContentType = "application/json";
@@ -755,7 +750,7 @@ public class Server : GlobalBase
                 stream.Close();
             }
         }
-        catch (Exception e)
+        catch (HttpListenerException e)
         {
             Log(e.ToString());
         }