import * as THREE from 'three';
const {
  document,
	window,
	HTMLCanvasElement,
	requestAnimationFrame,
	cancelAnimationFrame,
core,
	Event,
  Event0
} = THREE .DHTML

import { OrbitControls } from 'three/examples/jsm/controls/OrbitControls.js';
import { OrbitControls0 } from 'three/examples/jsm/controls/OrbitControls0.js';
import { GLTFLoader } from 'three/examples/jsm/loaders/GLTFLoader.js';
import { RGBELoader } from 'three/examples/jsm/loaders/RGBELoader.js';

import { GUI } from 'three/examples/jsm/libs/lil-gui.module.min.js';
var requestId
Page({
	onUnload() {
		cancelAnimationFrame(requestId, this.canvas)
		this.worker && this.worker.terminate()
if(this.canvas) this.canvas = null
		setTimeout(() => {
			if (this.renderer instanceof THREE.WebGLRenderer) {
				this.renderer.dispose()
				this.renderer.forceContextLoss()
				this.renderer.context = null
				this.renderer.domElement = null
				this.renderer = null
			}
		}, 10)
	},
  webgl_touch(e){
		const web_e = (window.platform=="devtools"?Event:Event0).fix(e)
		this.canvas.dispatchEvent(web_e)
  },
  onLoad() {
		document.createElementAsync("canvas", "webgl2",this).then(canvas => {
      this.canvas = canvas
      this.body_load(canvas).then()
    })
  },
  async body_load(canvas3d) {

    let camera, scene, renderer;

    const params = {
      punctualLightsEnabled: true
    };

    init().then( render );

    async function init() {

      const container = document.createElement( 'div' );
      document.body.appendChild( container );

      camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 0.25, 20 );
      camera.position.set( - 2, 1.5, 3 );

      scene = new THREE.Scene();

      const rgbeLoader = new RGBELoader();
      const envMap = await rgbeLoader.loadAsync( 'textures/equirectangular/moonless_golf_1k.hdr ' );
      envMap.mapping = THREE.EquirectangularReflectionMapping;

      scene.background = envMap;
      scene.environment = envMap;

      const loader = new GLTFLoader();
      const gltf = await loader.loadAsync( 'models/gltf/LightsPunctualLamp.glb' );

      scene.add( gltf.scene );

      const gui = new GUI();

      gui.add( params, 'punctualLightsEnabled' ).onChange( toggleLights );
      gui.open();

      renderer = new THREE.WebGLRenderer( { antialias: true } );
      renderer.setPixelRatio( window.devicePixelRatio );
      renderer.setSize( window.innerWidth, window.innerHeight );
      renderer.toneMapping = THREE.ACESFilmicToneMapping;
      renderer.toneMappingExposure = 1;
      container.appendChild( renderer.domElement );

      const controls = new (window.platform=="devtools"?OrbitControls:OrbitControls0)( camera, renderer.domElement );
      controls.addEventListener( 'change', render ); // use if there is no animation loop
      controls.minDistance = 2;
      controls.maxDistance = 10;
      controls.target.set( 0, 1, 0 );
      controls.update();

      window.addEventListener( 'resize', onWindowResize );

    }

    function onWindowResize() {

      camera.aspect = window.innerWidth / window.innerHeight;
      camera.updateProjectionMatrix();

      renderer.setSize( window.innerWidth, window.innerHeight );

      render();

    }

    function toggleLights( visible ) {

      scene.traverse( function ( object ) {

        if ( object.isLight ) {

          object.visible = visible;

        }

      } );

      render();

    }

    //

    function render() {

      renderer.render( scene, camera );

    }

  }
})