///////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2002-2026, 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) 2002-2026 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 { IComponent } from "@inweb/viewer-core";
import type { Viewer } from "../Viewer";
import { WCSHelper } from "../helpers/WCSHelper";

export class WCSHelperComponent implements IComponent {
  private viewer: Viewer;
  private wcsHelper: WCSHelper;

  constructor(viewer: Viewer) {
    this.wcsHelper = new WCSHelper(viewer.camera);

    this.viewer = viewer;
    this.viewer.addEventListener("databasechunk", this.syncHelper);
    this.viewer.addEventListener("drawviewpoint", this.syncHelper);
    this.viewer.addEventListener("render", this.viewerRender);
    this.viewer.addEventListener("changecameramode", this.updateHelperCamera);
  }

  dispose() {
    this.viewer.removeEventListener("databasechunk", this.syncHelper);
    this.viewer.removeEventListener("drawviewpoint", this.syncHelper);
    this.viewer.removeEventListener("render", this.viewerRender);
    this.viewer.removeEventListener("changecameramode", this.updateHelperCamera);

    this.wcsHelper.dispose();
  }

  syncHelper = () => {
    this.wcsHelper.dispose();
    this.wcsHelper = new WCSHelper(this.viewer.camera);
  };

  viewerRender = () => {
    if (!this.viewer.options.showWCS) return;

    this.wcsHelper.render(this.viewer.renderer);
  };

  updateHelperCamera = () => {
    this.wcsHelper.camera = this.viewer.camera;
  };
}
