namespace MementoPattern;

public class Originator : IOriginator
{
   private Guid _id;

   public Originator()
   {
      _id = Guid.NewGuid();
      Console.WriteLine($"Starting ID: {_id}");
      Console.WriteLine();
   }

   public IMemento GetMemento()
   {
      Memento memento = new Memento();
      memento.Id = _id;
      Console.WriteLine("Creating Memento...");
      Console.WriteLine();
      return memento;
   }

   public void SetMemento(IMemento memento)
   {
      if (!(memento is Memento))
         return;
      Console.WriteLine("Restting ID...");
      _id = (memento as Memento).Id;

      Console.WriteLine($"ID is reset to {_id}");
      Console.WriteLine();
   }

   public void UpdateId()
   {
      Console.WriteLine("Updating Id...");
      _id = Guid.NewGuid();
      Console.WriteLine($"Updated ID is now {_id}");
      Console.WriteLine();
   }

   private class Memento : IMemento
   {
      public Guid Id;
   }
}