///////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2002-2025, Open Design Alliance (the "Alliance").
// All rights reserved.
//
// This software and its documentation and related materials are owned by
// the Alliance. The software may only be incorporated into application
// programs owned by members of the Alliance, subject to a signed
// Membership Agreement and Supplemental Software License Agreement with the
// Alliance. The structure and organization of this software are the valuable
// trade secrets of the Alliance and its suppliers. The software is also
// protected by copyright law and international treaty provisions. Application
// programs incorporating this software must include the following statement
// with their copyright notices:
//
//   This application incorporates Open Design Alliance software pursuant to a
//   license agreement with Open Design Alliance.
//   Open Design Alliance Copyright (C) 2002-2025 by Open Design Alliance.
//   All rights reserved.
//
// By use of this software, its documentation or related materials, you
// acknowledge and accept the above terms.
///////////////////////////////////////////////////////////////////////////////

import { Viewer } from "../Viewer";

export function getSelected(viewer: Viewer): string[] {
  if (!viewer.visualizeJs) return [];

  const visViewer = viewer.visViewer();

  const handles: string[] = [];
  const selectionSet = visViewer.getSelected();
  if (!selectionSet.isNull() && selectionSet.numItems() !== 0) {
    const itr = selectionSet.getIterator();
    for (; !itr.done(); itr.step()) {
      const entityId = itr.getEntity();

      const entityPtr =
        entityId.getType() === 1
          ? entityId.openObject()
          : entityId.getType() === 2
            ? entityId.openObjectAsInsert()
            : null;

      if (entityPtr) {
        const handle = entityPtr.getNativeDatabaseHandle();
        if (handle !== "-1") handles.push(handle);
        entityPtr.delete();
      }
    }
    itr.delete();
  }

  return handles;
}