import * as THREE from 'three'
import BaseRenderer from '@/core/base/BaseRenderer.ts'
import { getLineId } from '@/core/ModelUtils.ts'
import { LineMaterial } from 'three/examples/jsm/lines/LineMaterial.js'
import { LineGeometry } from 'three/examples/jsm/lines/LineGeometry.js'
import { Line2 } from 'three/examples/jsm/lines/Line2.js'
import Constract from '@/core/Constract.ts'

/**
 * 辅助测量工具渲染器
 */
export default class MeasureRenderer extends BaseRenderer {
  /**
   * 当前测绘内容组, 所有测量点、线、标签都在这个组中. 但不包括临时点、线
   */
  group: THREE.Group

  static GROUP_NAME = 'measure_group'
  static LABEL_NAME = 'measure_label'
  static POINT_NAME = 'measure_point'
  static LINE_NAME = 'measure_line'

  public useHtmlLabel = false

  pointMaterial: THREE.Material
  lineMaterial: LineMaterial

  readonly defulePositionY = Constract.HEIGHT_MEASURE
  readonly defaultScale: THREE.Vector3 = new THREE.Vector3(0.1, 0.1, 0.1)
  readonly defaultRotation: THREE.Vector3 = new THREE.Vector3(0, 0, 0)

  constructor(itemTypeName: string) {
    super(itemTypeName)
  }

  async init() {
    this.pointMaterial = new THREE.SpriteMaterial({
      color: 0xFFFF99, // 0x303133,
      transparent: true,
      side: THREE.DoubleSide,
      opacity: 1,
      sizeAttenuation: true
    })
    this.lineMaterial = new LineMaterial({
      color: 0xFF8C00,
      linewidth: 1,
      vertexColors: false,
      dashed: false
    })
    return Promise.all([
      super.init()
    ])
  }

  /**
   * 所有的点，必须使用同一个尺寸, 改属性也无效
   */
  override afterCreateOrUpdatePoint(item: ItemJson, option: RendererCudOption, object: THREE.Object3D) {
    super.afterCreateOrUpdatePoint(item, option, object)

    const point = object

    point.scale.set(this.defaultScale.x, this.defaultScale.y, this.defaultScale.z)
    point.rotation.set(
      THREE.MathUtils.degToRad(this.defaultRotation.x),
      THREE.MathUtils.degToRad(this.defaultRotation.y),
      THREE.MathUtils.degToRad(this.defaultRotation.z)
    )
  }


  createLineBasic(start: ItemJson, end: ItemJson, type: LinkType): THREE.Object3D {
    const geom = new LineGeometry()
    const obj = new Line2(geom, this.lineMaterial)
    obj.frustumCulled = false
    obj.name = MeasureRenderer.LINE_NAME
    obj.uuid = getLineId(start.id, end.id, type)

    return obj
  }

  createPointBasic(item: ItemJson, option?: RendererCudOption): THREE.Object3D {
    // const tt = new THREE.BoxGeometry(1, 1, 1)
    // const obj = new THREE.Mesh(tt, this.movelinePoint)
    // obj.name = MeasureRenderer.POINT_NAME
    // obj.uuid = item.id
    //
    // return [obj]

    // 创建平面几何体
    const obj = new THREE.Sprite(this.pointMaterial as THREE.SpriteMaterial)
    obj.name = MeasureRenderer.POINT_NAME
    return obj
  }

  // appendToScene(...objects: THREE.Object3D[]) {
  //   if (!this.group || this.group.parent !== this.tempViewport.scene.scene) {
  //     if (this.group && this.group.parent !== this.tempViewport.scene.scene) {
  //       // 幻影加载问题
  //       this.group.parent.removeFromParent()
  //     }
  //
  //     this.group = new THREE.Group()
  //     this.group.name = MeasureRenderer.GROUP_NAME
  //     this.tempViewport?.scene.add(this.group)
  //   }
  //
  //   const dragObjects = objects.filter(obj => !!obj.userData.draggable)
  //   //this.tempViewport.dragControl.setDragObjects(dragObjects, 'push')
  //
  //   this.group.add(...objects)
  // }

  afterCreateOrUpdateLine(start: ItemJson, end: ItemJson, type: LinkType, option: RendererCudOption, object: THREE.Object3D) {
    super.afterCreateOrUpdateLine(start, end, type, option, object)

    const startPoint = this.tempViewport?.entityManager.findObjectById(start.id)
    const endPoint = this.tempViewport?.entityManager.findObjectById(end.id)

    this.tempViewport.labelManager.createOrUpdateLabelByDistance(object, startPoint.position, endPoint.position, {
      useHtmlLabel: this.useHtmlLabel,
      fontSize: 0.4,
      color: '#333333'
    })

    // const p0 = startPoint.position
    // const p1 = endPoint.position
    //
    // const dist = p0.distanceTo(p1)
    // const label = numberToString(dist) + ' m'
    //
    // const position = new THREE.Vector3().addVectors(p0, p1).multiplyScalar(0.5)
    // let labelObj: Text | CSS2DObject | undefined = object.userData.labelObj
    // if (!labelObj || !labelObj.parent) {
    //   labelObj = this.createLabel(label)
    //   this.appendToScene(labelObj)
    //   object.userData.labelObj = labelObj
    // }
    //
    // labelObj.position.set(position.x, position.y + 0.3, position.z - 0.2)
    //
    // if (this.useHtmlLabel) {
    //   labelObj.element.innerHTML = label
    //
    // } else {
    //   // 让文本朝向摄像机
    //   labelObj.quaternion.copy(this.tempViewport.camera.quaternion)
    //   labelObj.text = label
    //   labelObj.sync()
    // }
  }

  afterDeleteLine(start: ItemJson, end: ItemJson, type: LinkType, option: RendererCudOption, object: THREE.Object3D) {
    super.afterDeleteLine(start, end, type, option, object)

    this.tempViewport.labelManager.removeLabel(object)
    // 删除标签
    // const labelObj = object.userData?.labelObj
    // if (labelObj && labelObj.parent) {
    //   labelObj.parent.remove(labelObj)
    // }
  }


  dispose() {
    super.dispose()

    if (this.group && this.group.parent) {
      this.group.parent.remove(this.group)
    }
    this.group = undefined

    this.pointMaterial?.dispose()
    this.lineMaterial?.dispose()
  }
}