using Vellum;

namespace Ariadne.Vellum
{
    /// <summary>
    /// Saves a trigger as the waits that are subscribed to it.
    /// </summary>
    public class TriggerConverter : SaveConverter<Trigger>
    {
        public override SaveNode Write(Trigger value, SaveSession session)
        {
            return SavedSubscriptions.Write(value, session);
        }

        public override Trigger Allocate(SaveNode node, SaveSession session)
        {
            return new Trigger();
        }

        public override void Fill(Trigger blank, SaveNode node, SaveSession session)
        {
            SavedSubscriptions.Fill(blank, node, session);
        }

        public override void Complete(Trigger blank, SaveNode node, SaveSession session)
        {
            SavedSubscriptions.Check(blank);
        }

        public override bool TryListChildren(SaveNode node, ChildList children)
        {
            return SavedSubscriptions.ListChildren(node, children);
        }

        public override Trigger Read(SaveNode node, SaveSession session)
        {
            Trigger returnMe = Allocate(node, session);
            session.Publish(node, returnMe);
            Fill(returnMe, node, session);
            return returnMe;
        }
    }
}