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 Constract from '@/core/Constract.ts'
import InstancePointManager from '@/core/manager/InstancePointManager.ts'
import LineSegmentManager from '@/core/manager/LineSegmentManager.ts'
import type { Object3DLike } from '@/types/ModelTypes.ts'

/**
 * 辅助测量工具渲染器
 * 支持 InstanceMesh 和 LineSegment
 */
export default class MeasureRenderer extends BaseRenderer {
  static LABEL_NAME = 'measure_label'
  static POINT_NAME = 'measure_point'

  public useHtmlLabel = false

  pointMaterial: THREE.Material = new THREE.MeshBasicMaterial({
    color: 0xFFFF99,
    transparent: true,
    depthWrite: false,
    side: THREE.DoubleSide
  })
  pointGeometry = new THREE.PlaneGeometry(1, 1)
  lineMaterial: LineMaterial = new LineMaterial({
    color: 0xFF8C00,
    linewidth: 1,
    vertexColors: false,
    dashed: false
  })
  readonly defulePositionY = Constract.HEIGHT_MEASURE
  readonly defaultScale: THREE.Vector3 = new THREE.Vector3(0.25, 0.25, 0.1)
  readonly defaultRotation: THREE.Vector3 = new THREE.Vector3(90, 0, 0)

  /**
   * 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: Object3DLike) {
    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)
    )
  }

  createPointBasic(item: ItemJson, option?: RendererCudOption): Object3DLike {
    // 不允许改变高度/角度/大小
    item.tf = [
      [item.tf[0][0], this.defulePositionY, item.tf[0][2]],
      [this.defaultRotation.x, this.defaultRotation.y, this.defaultRotation.z],
      [this.defaultScale.x, this.defaultScale.y, this.defaultScale.z]
    ]
    return this.pointManager.createPoint(item)
  }

  createLineBasic(start: ItemJson, end: ItemJson, type: LinkType): Object3DLike {
    const lineId = getLineId(start.id, end.id, type)
    return this.lineSegmentManager.createLine(lineId, start.tf[0], end.tf[0], this.lineMaterial.color)
  }

  afterCreateOrUpdateLine(start: ItemJson, end: ItemJson, type: LinkType, option: RendererCudOption, object: Object3DLike) {
    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'
    })
  }

  afterDeleteLine(start: ItemJson, end: ItemJson, type: LinkType, option: RendererCudOption, object: Object3DLike) {
    super.afterDeleteLine(start, end, type, option, object)
    this.tempViewport.labelManager.removeLabel(object)
  }

  get pointManager(): InstancePointManager {
    if (!this.tempViewport) {
      throw new Error('tempViewport is not set.')
    }
    return this.tempViewport.getOrCreatePointManager(this.itemTypeName, () =>
      // 构建 InstanceMesh 代理对象
      InstancePointManager.create(this.itemTypeName,
        this.tempViewport,
        this.pointGeometry,
        this.pointMaterial,
        Constract.MAX_MEASURE_INSTANCES)
    )
  }

  get lineSegmentManager(): LineSegmentManager {
    if (!this.tempViewport) {
      throw new Error('tempViewport is not set.')
    }
    return this.tempViewport.getOrCreateLineManager(this.itemTypeName, () =>
      // 构建 LineSegment.points 代理对象
      LineSegmentManager.create(this.itemTypeName,
        this.tempViewport,
        this.lineMaterial)
    )
  }

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