using Editor;

namespace Sunless.Architecture;

// The span dressing an author last worked in. Subtools are raised per tool activation, so a seed held only in a
// field is a seed that lasts until the next time anything else is picked - which is every few seconds while a room
// is being filled. Remembered the way the handle mode is: it is a way of working, not a property of one part.
public static class ArchSpanMemo {
	const string Key = "arch.span.dressing";

	// Dressed on the way out as well as in: what comes back off disk is a whole part, and an id or a pair of ends
	// carried out of a previous session would name piers this plan has never heard of.
	public static ArchSpanPart Recall() => (EditorCookie.Get( Key, new ArchSpanPart() ) ?? new ArchSpanPart()).Dressing();

	public static void Remember( ArchSpanPart span ) {
		if ( span is not null ) {
			EditorCookie.Set( Key, span.Dressing() );
		}
	}
}