///////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2002-2023, 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) 2002-2021 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 * as ODA from "open-cloud-client";
import * as THREE from "three";
import { IComponent } from "../IComponent";
import type { ThreejsViewer } from "../ThreejsViewer";

export class DefaultCameraPositionComponent implements IComponent {
  protected viewer: ThreejsViewer;

  constructor(viewer: ThreejsViewer) {
    this.viewer = viewer;
    this.viewer.addEventListener("geometryend", this.geometryEnd);
  }

  dispose() {
    this.viewer.removeEventListener("geometryend", this.geometryEnd);
  }

  geometryEnd = (event: ODA.GeometryEndEvent) => {
    const { data: scene } = event;

    scene.updateMatrixWorld();

    const box = new THREE.Box3().setFromObject(scene);
    const size = box.getSize(new THREE.Vector3()).length();
    const center = box.getCenter(new THREE.Vector3());

    scene.position.x += scene.position.x - center.x;
    scene.position.y += scene.position.y - center.y;
    scene.position.z += scene.position.z - center.z;

    this.viewer.camera.near = size / 100;
    this.viewer.camera.far = size * 100;

    this.viewer.camera.position.copy(center);
    this.viewer.camera.position.x += size / 2.0;
    this.viewer.camera.position.y += size / 5.0;
    this.viewer.camera.position.z += size / 2.0;

    this.viewer.camera.updateMatrixWorld();
    this.viewer.camera.updateProjectionMatrix();
    this.viewer.camera.lookAt(center);
  };
}