Same todo, fixed deleting files.

SecureSharing.Business/Services/MessageService.cs

         if (messageDto is null)
             return false;
 
-        DeleteFiles(messageDto.Code);
-
         _dbContext.Messages.Remove(_mapper.Map<Message>(messageDto));
         try
         {
         var a = _dbContext.Messages.Update(_mapper.Map<Message>(messageDto));
         await _dbContext.SaveChangesAsync();
     }
-
-    private void DeleteFiles(Guid basePathGuid)
-    {
-        // TODO: this path needs to be extracted somehow.
-        var basePath = Path.Combine(@"D:\secure-sharing\SecureSharing\wwwroot\files", basePathGuid.ToString());
-
-        Directory.Delete(basePath, true);
-    }
 }

SecureSharing/Infrastructure/ModelFactory.cs

 public sealed class ModelFactory : IModelFactory
 {
     private readonly IMessageService _messageService;
+    private readonly string _basePath;
 
-    public ModelFactory(IMessageService messageService)
+    public ModelFactory(IMessageService messageService, IWebHostEnvironment webHostEnvironment)
     {
+        _basePath = Path.Combine(webHostEnvironment.WebRootPath.Split('/')[0], "files");
         _messageService = messageService;
     }
 
             }
             else
             {
+                Directory.Delete(Path.Combine(_basePath, message.Code.ToString()), true);
                 await _messageService.Delete(message.Id);
             }
         }