import * as THREE from 'three';
// 导入轨道控制器
import { OrbitControls } from 'three/examples/jsm/controls/OrbitControls.js';
import { CSS3DRenderer } from 'three/examples/jsm/renderers/CSS3DRenderer.js';
import { CSS2DRenderer } from 'three/examples/jsm/renderers/CSS2DRenderer.js';
import { GLTFLoader } from 'three/examples/jsm/loaders/GLTFLoader.js';
// import { FBXLoader } from 'three/examples/jsm/loaders/FBXLoader.js';
import { DRACOLoader } from 'three/examples/jsm/loaders/DRACOLoader.js';
import { EffectComposer } from 'three/examples/jsm/postprocessing/EffectComposer.js';
import { FXAAShader } from 'three/examples/jsm/shaders/FXAAShader.js';
import { ShaderPass } from 'three/examples/jsm/postprocessing/ShaderPass.js';
import Stats from 'three/examples/jsm/libs/stats.module.js';
import { useModelStore } from '/@/store/modules/threejs';
import TWEEN from 'three/examples/jsm/libs/tween.module.js';
import { RGBELoader } from 'three/examples/jsm/loaders/RGBELoader.js';
import { useGlobSetting } from '/@/hooks/setting';
import { getList } from '@/views/vent/sys/resources/file.api';
import { saveModel } from '/@/utils/threejs/util';

const globSetting = useGlobSetting();
const baseApiUrl = globSetting.domainUrl;

// import * as dat from 'dat.gui';
// const gui = new dat.GUI();
// gui.domElement.style = 'position:absolute;top:10px;left:10px;z-index:99999999999999';

class UseThree {
  stats: Stats | null = null; // 帧
  canvasContainer: HTMLCanvasElement | null; //canvas 容器
  CSSCanvasContainer: HTMLCanvasElement | null = null; // css canvas 容器
  camera: THREE.PerspectiveCamera | null = null; // 相机
  scene: THREE.Scene | null = null;
  renderer: THREE.WebGLRenderer | null = null;
  renderEnabled = true;
  css3dRender: CSS3DRenderer | null = null;
  css2dRender: CSS2DRenderer | null = null;
  orbitControls: OrbitControls | null = null;
  animationAction: THREE.AnimationAction | null = null;
  clock: THREE.Clock | null = new THREE.Clock(); // 计时器
  timeoutId: NodeJS.Timeout | null = null;
  animationId = 0;
  isRender = true;
  spriteText: THREE.Sprite | null = null;
  mouse = new THREE.Vector2();
  rayCaster: THREE.Raycaster | null = null;
  animations: THREE.AnimationClip[] = [];
  mixers: THREE.AnimationMixer[] = [];
  renderT = 1 / 40;
  timeS = 0;
  track: any = null;
  composer; //后期
  timeOut: NodeJS.Timeout | null = null; //
  textureMap = new Map<string, THREE.Texture>();

  constructor(canvasSelector, css3Canvas?, css2Canvas?) {
    this.canvasContainer = document.querySelector(canvasSelector);
    //初始化
    this.init(css3Canvas, css2Canvas);
    // this.animate();
    window.addEventListener('resize', this.resizeRenderer.bind(this));
    // 添加滚动事件，鼠标滚动模型执行动画
    // window.addEventListener('wheel', this.wheelRenderer.bind(this));

    // this.canvasContainer?.appendChild(gui.domElement);
  }
  init(css3Canvas?, css2Canvas?) {
    // 初始化场景
    this.initScene();
    // 初始化环境光
    // this.initLight();
    // 初始化相机
    this.initCamera();
    //初始化渲染器
    this.initRenderer();
    // 初始化控制器
    this.initControles();
    if (css3Canvas) {
      this.initCSS3Renderer(css3Canvas);
    }
    if (css2Canvas) {
      this.initCSS2Renderer(css2Canvas);
    }
    // this.setTestPlane();
    this.rayCaster = new THREE.Raycaster();
    // this.createStats();
    // this.removeSawtooth();
  }

  createStats() {
    this.stats = Stats();
    this.stats?.setMode(0);
    this.stats.domElement.style = 'position: absolute; top: 300px';
    this.canvasContainer?.appendChild(this.stats.domElement);
  }

  initScene() {
    this.scene = new THREE.Scene();
    // const axesHelper = new THREE.AxesHelper(100);
    // this.scene?.add(axesHelper);
    // const size = 1000;
    // const divisions = 10;
    // const gridHelper = new THREE.GridHelper(size, divisions);
    // this.scene?.add(gridHelper);
  }

  initLight() {
    // const light = new THREE.AmbientLight(0xffffff, 1);
    // light.position.set(0, 1000, 1000);
    // (this.scene as THREE.Scene).add(light);
  }

  initCamera() {
    // this.camera = new THREE.PerspectiveCamera(50, this.canvasContainer.clientWidth / this.canvasContainer.clientHeight, 0.0000001, 1000);
    if (!window['$camera']) {
      throw new Error('threejs摄像头初始化异常!');
    } else {
      this.camera = window['$camera'] as THREE.PerspectiveCamera;
      this.camera.layers.enableAll();
      if (this.canvasContainer) this.camera.aspect = this.canvasContainer.clientWidth / this.canvasContainer.clientHeight;
      this.camera.near = 0.0000001;
      this.camera.far = 1000;
    }

    //
    // const helper = new THREE.CameraHelper(this.camera);
    // this.scene?.add(helper);
    // gui.add(this.camera.position, 'x', 0.00001, 10000);
    // gui.add(this.camera.position, 'y', 0.00001, 10000);
    // gui.add(this.camera.position, 'z', 0.00001, 10000);
    // gui.add(this.camera, 'near', 0.01, 1).step(0.01);
    // gui.add(this.camera, 'far', 10, 100000);
    // gui.add(this.camera, 'fov', 0, 180);
  }

  initRenderer() {
    if (!window['$renderer']) {
      throw new Error('threejs渲染器初始化异常!');
    } else {
      this.renderer = window['$renderer'];
      if (this.canvasContainer) {
        this.renderer.toneMappingExposure = 1.0;
        this.renderer.toneMapping = THREE.ACESFilmicToneMapping;
        // const gl = this.renderer?.getContext('webgl');
        // gl && gl.getExtension('WEBGL_lose_context')?.restoreContext();
        // this.renderer?.forceContextRestore()
        this.renderer?.setSize(this.canvasContainer.clientWidth, this.canvasContainer.clientHeight);
        this.canvasContainer.appendChild(this.renderer.domElement);
      }
    }
  }

  initCSS3Renderer(cssCanvas) {
    this.CSSCanvasContainer = document.querySelector(cssCanvas);
    if (this.CSSCanvasContainer) {
      this.css3dRender = new CSS3DRenderer() as CSS3DRenderer;
      this.css3dRender.setSize(this.canvasContainer.clientWidth, this.canvasContainer.clientHeight);
      this.CSSCanvasContainer?.appendChild(this.css3dRender.domElement);
      this.css3dRender.render(this.scene as THREE.Scene, this.camera as THREE.PerspectiveCamera);
      // this.css3dRender.domElement.style.pointerEvents = 'none';
      // this.orbitControls = new OrbitControls(this.camera as THREE.Camera, this.css3dRender?.domElement) as OrbitControls;
      // this.orbitControls.update();
    }
  }

  initCSS2Renderer(cssCanvas) {
    this.CSSCanvasContainer = document.querySelector(cssCanvas);
    if (this.CSSCanvasContainer) {
      this.css2dRender = new CSS2DRenderer();
      this.css2dRender.setSize(this.canvasContainer.clientWidth, this.canvasContainer.clientHeight);
      this.CSSCanvasContainer?.appendChild(this.css2dRender.domElement);
      this.css2dRender.render(this.scene as THREE.Scene, this.camera as THREE.PerspectiveCamera);

      // this.orbitControls = new OrbitControls(this.camera as THREE.Camera, this.css2dRender?.domElement) as OrbitControls;
      // this.orbitControls.update();
      // this.css2dRender.domElement.style.pointerEvents = 'none';
    }
  }

  initControles() {
    if (!window['$orbitControls']) {
      throw new Error('threejs控制器初始化异常!');
    } else {
      this.orbitControls = window['$orbitControls'];
      this.orbitControls.panSpeed = 1;
      this.orbitControls.rotateSpeed = 1;
      this.orbitControls.maxPolarAngle = Math.PI;
      this.orbitControls.minPolarAngle = 0;
    }
    // this.orbitControls = new OrbitControls(this.camera as THREE.Camera, this.renderer?.domElement) as OrbitControls;
    // this.orbitControls.update();
    // this.orbitControls.minDistance = 1;
    // this.orbitControls.maxDistance = 100;
    // this.orbitControls.maxDistance = true;
  }

  setGLTFModel(modalNames, group = null, isBlender = false) {
    window['startTime'] = new Date().getTime();
    const modelStore = useModelStore();
    return new Promise(async (resolve, reject) => {
      try {
        const gltfLoader = new GLTFLoader();
        const dracoLoader = new DRACOLoader();
        dracoLoader.setDecoderPath('/model/draco/gltf/');
        dracoLoader.setDecoderConfig({ type: 'js' }); //使用兼容性强的draco_decoder.js解码器
        dracoLoader.preload();
        gltfLoader.setDRACOLoader(dracoLoader);

        const db = window['CustomDB'];
        const resolvePromise: Promise<any>[] = [];

        const modalNameArr = Object.prototype.toString.call(modalNames) === '[object Array]' ? modalNames : [modalNames];
        const len = modalNameArr.length;
        for (let i = 0; i < len; i++) {
          resolvePromise[i] = new Promise(async (childResolve, reject) => {
            try {
              // 解析模型
              const modalNameStr = modalNameArr[i];
              const data = modelStore.modelArr.get(modalNameStr) || null;
              let modalValue;
              if (!data) {
                const modalArr = await db.modal.where('modalName').equals(modalNameStr).toArray();
                if (modalArr.length > 0) {
                  modalValue = modalArr[0].modalVal;
                }
              } else {
                modalValue = data.modalVal;
              }
              if (modalValue) {
                gltfLoader.parse(
                  modalValue,
                  '/model/glft/',
                  (gltf) => {
                    let object: THREE.Object3D = gltf.scene;
                    // setModalCenter(object);
                    object.traverse((obj) => {
                      if (obj instanceof THREE.Mesh) {
                        obj.material.emissiveIntensity = 1;
                        obj.material.emissiveMap = obj.material.map;
                        obj.material.blending = THREE.CustomBlending;

                        if (obj.material.opacity < 1) {
                          obj.material.transparent = true;
                        }
                        if (obj.material.map) {
                          obj.material.map.colorSpace = THREE.SRGBColorSpace;
                          obj.material.map.flipY = false;
                          obj.material.map.anisotropy = 1;
                        }
                        if (obj.material.emissiveMap) {
                          obj.material.emissiveMap.colorSpace = THREE.SRGBColorSpace;
                          obj.material.emissiveMap.flipY = false;
                        }

                        if (obj.material.map || obj.material.emissiveMap) {
                          obj.material.needsUpdate = true;
                        }

                        // if (envMap) {
                        //   obj.material.envMap = envMap;
                        //   obj.material.envMapIntensity = 1;
                        // }
                        // obj.renderOrder = 1;
                      }
                    });
                    if (isBlender) {
                      object = object.children[0];
                    }
                    object.animations = gltf.animations;
                    object.name = modalNameStr;
                    if (group) group.add(object);
                    childResolve(object);
                  },
                  (err) => {
                    console.log(err);
                  }
                );
              } else {
                // 开启线程下载
                console.log('需要开启线程下载模型资源。。。。。');
                const result = (await getList({ fileName: modalNameStr })) || [];
                const file = result['records'][0];
                if (file && file.path) {
                  gltfLoader.load(`${baseApiUrl}/sys/common/static/${file.path}`, async (glft) => {
                    if (glft) {
                      let object: THREE.Object3D = glft.scene;
                      if (isBlender) {
                        object = object.children[0];
                      }
                      object.name = modalNameStr;
                      if (glft.animations.length > 0) {
                        object.animations = glft.animations;
                      }
                      if (group) group.add(object);
                      childResolve(object);
                      const modalArr = await db.modal.where('modalName').equals(modalNameStr).toArray();
                      if (modalArr.length < 1) {
                        saveModel(modalNameStr, file.path, file.version);
                      }
                    }
                  });
                } else {
                  childResolve(null);
                }
              }
            } catch (error) {
              console.log(error);
              reject();
            }
          });
        }
        Promise.all(resolvePromise).then((objects) => {
          dracoLoader.dispose();
          resolve(objects);
        });
      } catch (error) {
        reject('加载模型出错');
      }
    });
  }

  // setFBXModel(modalNames, group = null) {
  //   window['startTime'] = new Date().getTime();
  //   const modelStore = useModelStore();
  //   return new Promise(async (resolve, reject) => {
  //     try {
  //       const fbxLoader = new FBXLoader();

  //       fbxLoader.setPath('/model/fbx/');

  //       const db = window['CustomDB'];
  //       const resolvePromise: Promise<any>[] = [];

  //       let modalNameArr = Object.prototype.toString.call(modalNames) === '[object Array]' ? modalNames : [modalNames];
  //       let len = modalNameArr.length;

  //       for (let i = 0; i < len; i++) {
  //         resolvePromise[i] = new Promise(async (childResolve, reject) => {
  //           try {
  //             // 解析模型
  //             let modalValue;
  //             const modalNameStr = modalNameArr[i];
  //             let data = modelStore.modelArr.get(modalNameStr) || null;
  //             if (!data) {
  //               const modalArr = await db.modal.where('modalName').equals(modalNameStr).toArray();
  //               if (modalArr.length > 0) modalValue = modalArr[0].modalVal;
  //             } else {
  //               modalValue = data.modalVal;
  //             }
  //             if (modalValue) {
  //               const object = fbxLoader.parse(modalValue, '/model/fbx/');
  //               // const object = fbx.scene;
  //               // setModalCenter(object);
  //               if (object) {
  //                 object.traverse((obj) => {
  //                   if (obj instanceof THREE.Mesh) {
  //                     obj.material.emissiveIntensity = 1;
  //                     obj.material.emissiveMap = obj.material.map;
  //                     obj.material.blending = THREE.CustomBlending;
  //                     if (obj.material.opacity < 1) {
  //                       obj.material.transparent = true;
  //                     }
  //                     if (obj.material.map) {
  //                       obj.material.map.encoding = THREE.sRGBEncoding;
  //                       obj.material.map.flipY = false;
  //                       obj.material.map.anisotropy = 1;
  //                     }
  //                     if (obj.material.emissiveMap) {
  //                       obj.material.emissiveMap.encoding = THREE.sRGBEncoding;
  //                       obj.material.emissiveMap.flipY = false;
  //                     }

  //                     if (obj.material.map || obj.material.emissiveMap) {
  //                       obj.material.needsUpdate = true;
  //                     }

  //                     // if (envMap) {
  //                     //   obj.material.envMap = envMap;
  //                     //   obj.material.envMapIntensity = 1;
  //                     // }
  //                     // obj.renderOrder = 1;
  //                   }
  //                 });
  //                 object.animations = object.animations;
  //                 object.name = modalNameStr;
  //                 group?.add(object);
  //                 childResolve(object);
  //               }
  //             }
  //           } catch (error) {
  //             console.log(error);
  //             reject();
  //           }
  //         });
  //       }

  //       Promise.all(resolvePromise).then((objects) => {
  //         resolve(objects);
  //       });
  //     } catch (error) {
  //       reject('加载模型出错');
  //     }
  //   });
  // }

  setTestPlane() {
    const plane = new THREE.Mesh(new THREE.PlaneGeometry(10, 10), new THREE.MeshPhongMaterial({ color: 0x999999, specular: 0x101010 }));
    plane.rotation.x = -Math.PI / 2;
    plane.position.y = 0.03;
    plane.receiveShadow = true;
    this.scene?.add(plane);
  }

  removeSawtooth() {
    this.composer = new EffectComposer(this.renderer as THREE.WebGLRenderer);
    const FXAAShaderPass = new ShaderPass(FXAAShader);
    FXAAShaderPass.uniforms['resolution'].value.set(1 / this.canvasContainer.clientWidth, 1 / this.canvasContainer.clientHeight);
    FXAAShaderPass.renderToScreen = true;
    this.composer.addPass(FXAAShaderPass);
  }

  /* 场景环境背景 */
  setEnvMap(hdr) {
    if (!this.scene) return;
    // (this.scene as THREE.Scene).environment
    new RGBELoader().setPath('/model/hdr/').load(hdr, (texture) => {
      texture.colorSpace = THREE.SRGBColorSpace;
      texture.mapping = THREE.EquirectangularReflectionMapping;
      if (this.scene) (this.scene as THREE.Scene).environment = texture;
      texture.dispose();
    });
  }

  render() {
    this.startAnimation();
    this.orbitControls?.update();
    this.camera?.updateMatrixWorld();
    // this.composer?.render();
    this.renderer?.render(this.scene as THREE.Object3D, this.camera as THREE.Camera);
    this.css3dRender?.render(this.scene as THREE.Scene, this.camera as THREE.PerspectiveCamera);
    this.css2dRender?.render(this.scene as THREE.Scene, this.camera as THREE.PerspectiveCamera);
  }

  timeRender() {
    //设置为可渲染状态
    this.renderEnabled = true;
    //清除上次的延迟器
    if (this.timeOut) {
      clearTimeout(this.timeOut);
    }
    this.timeOut = setTimeout(() => {
      this.renderEnabled = false;
    }, 3000);
  }

  /* 漫游 */
  startMY() {}
  /* 初始动画 */
  startAnimation() {}

  renderAnimationScene() {}

  animate() {
    if (this.isRender) {
      this.animationId = requestAnimationFrame(this.animate.bind(this));
      const T = this.clock?.getDelta() || 0;
      this.timeS = this.timeS + T;
      if (this.timeS > this.renderT) {
        this.renderAnimationScene();

        if (this.renderEnabled) {
          this.render();
        }
        this.stats?.update();
        this.timeS = 0;
      }
      // this.stats?.update();
      // // TWEEN.update();
      // // this.renderAnimationScene();
      // if (this.renderEnabled) {
      //   this.render();
      // }
    }
  }

  resizeRenderer() {
    // 更新相机比例
    if (this.camera) {
      (this.camera as THREE.PerspectiveCamera).aspect = this.canvasContainer.clientWidth / this.canvasContainer.clientHeight;
      // 刷新相机矩阵
      this.camera?.updateProjectionMatrix();
    }
    // 设置场景尺寸
    this.renderer?.setSize(this.canvasContainer.clientWidth, this.canvasContainer.clientHeight);
    this.css3dRender?.setSize(this.canvasContainer.clientWidth, this.canvasContainer.clientHeight);
    this.css2dRender?.setSize(this.canvasContainer.clientWidth, this.canvasContainer.clientHeight);
  }

  wheelRenderer(e: WheelEvent) {
    const timeScale = e.deltaY > 0 ? 1 : -1;
    this.animationAction?.setEffectiveTimeScale(timeScale);
    (this.animationAction as THREE.AnimationAction).paused = false;
    this.animationAction?.play();
    if (this.timeoutId) {
      clearTimeout(this.timeoutId);
    }
    this.timeoutId = setTimeout(() => {
      this.animationAction?.halt(0.5);
    }, 500);
  }

  clearMesh(item) {
    item.geometry?.dispose();
    if (item.material) {
      const material = item.material;

      for (const key of Object.keys(material)) {
        const value = material[key];
        if (value && typeof value === 'object' && value['dispose'] && typeof value['dispose'] === 'function') {
          value.dispose();
        }
      }
      material.dispose();
    }
    if (item.texture) {
      item.texture.dispose();
    }
  }
  clearGroup(group) {
    const removeObj = (obj) => {
      if (obj && obj?.children && obj?.children.length > 0) {
        for (let i = obj?.children.length - 1; i >= 0; i--) {
          const item = obj?.children[i];
          if (item && item.children && item.children.length > 0) {
            removeObj(item);
            item?.clear();
          } else {
            if (item) {
              if (item.parent) item.parent.remove(item);
              this.clearMesh(item);
              item.clear();
            }
          }
        }
      }
    };
    removeObj(group);
  }

  clearScene() {
    this.clearGroup(this.scene);
    // console.log('场景纹理数量----------->', this.textureMap.size);
    this.textureMap.forEach((texture) => {
      texture?.dispose();
    });
    this.textureMap.clear();
  }

  destroy() {
    TWEEN.getAll().forEach((item) => {
      item.stop();
    });
    TWEEN.removeAll();
    this.isRender = false;
    cancelAnimationFrame(this.animationId);
    this.clearScene();
    window.removeEventListener('resize', this.resizeRenderer);
    // this.orbitControls?.dispose();
    // this.scene?.environment?.dispose();
    this.scene?.clear();
    this.renderer?.dispose();
    this.renderer?.getRenderTarget()?.dispose();

    if (this.renderer && this.canvasContainer) this.canvasContainer.innerHTML = '';
    if (this.CSSCanvasContainer && this.css3dRender) this.CSSCanvasContainer.innerHTML = '';

    // if (this.renderer) this.renderer.domElement = null;
    this.renderer?.clear();

    if (this.css3dRender) this.css3dRender.domElement = null;
    if (this.css2dRender) this.css2dRender.domElement = null;

    if (this.canvasContainer) this.canvasContainer.innerHTML = '';
    if (this.CSSCanvasContainer) this.CSSCanvasContainer.innerHTML = '';

    this.camera = null;
    this.orbitControls = null;
    this.renderer = null;
    this.stats = null;
    this.scene = null;
    this.css3dRender = null;
    this.css2dRender = null;
    THREE.Cache.clear();
    console.log('场景销毁后信息----------->', window['$renderer']?.info, this.scene);
  }
}

export default UseThree;