using System.Collections.Generic;
using Editor;

namespace Sunless.Architecture;

// A viewport shortcut, edge triggered, read in ONE place. Two guards, both learned the hard way: the pointer
// has to be over the viewport, and the keyboard must not be in a text field - otherwise every R typed into a
// building's name spins the building behind the sheet. Edge triggered because a held key is one press, and
// each key is read once a frame, so the reader asks and the answer is spent.
public static class ArchKeys {
	static readonly HashSet<KeyCode> held = new();

	public static bool Pressed( ArchTool tool, KeyCode key ) {
		var down = Down( tool, key );
		var edge = down && held.Add( key );

		if ( !down ) {
			held.Remove( key );
		}

		return edge;
	}

	static bool Down( ArchTool tool, KeyCode key ) {
		return tool?.Manager?.IsCurrentViewFocused == true
			&& global::Editor.Application.FocusWidget is not (LineEdit or TextEdit)
			&& global::Editor.Application.IsKeyDown( key );
	}
}