import { useEntity } from '@/hooks/entity'
import { getDirection } from '@/utils/pos'
export function useMultiZBTraj() {
  return {
    multiZBTrajMap,
    addMultiZBTraj,
    removeAllMultiZBTraj,
  }
}

const multiZBTrajMap = new Map()

const { getMBEntityOpt } = useEntity()

// 添加多目标目标和轨迹
function addMultiZBTraj(zbList) {
  removeAllMultiZBTraj()
  Object.keys(zbList).forEach(async id => {
    if (!multiZBTrajMap.has(id)) {
      const { info, list: trajList } = zbList[id]
      const { targetType, country, extendInfo } = info
      const ZBOpt = await getMBEntityOpt({
        id,
        targetType,
        country,
        extendInfo,
      })

      const startTime = trajList[0].target_time
      const endTime = trajList.at(-1).target_time

      const positions = getPositions(trajList, targetType)

      ZBOpt.billboard.rotation = new Cesium.CallbackProperty(currentTime => {
        const point1 = positions.position.getValue(currentTime)
        const nextTime = Cesium.JulianDate.addSeconds(
          currentTime,
          2,
          new Cesium.JulianDate()
        )
        const point2 = positions.position.getValue(nextTime)
        if (point2 && point1) {
          const heading = getDirection(point1, point2)

          const angleDegrees = Cesium.Math.toDegrees(heading)
          return Cesium.Math.toRadians(angleDegrees)
        }
      }, false)

      Object.assign(ZBOpt, {
        ...getPositions(trajList, targetType),
        ...getPath(startTime, endTime),
        // ...getAvailability(startTime, endTime),
      })

      console.log('ZBOpt', ZBOpt)

      const ZBEntity = viewer.entities.add(ZBOpt)
      multiZBTrajMap.set(id, ZBEntity)
    }
  })
}

function getPositions(trajList, targetType) {
  const positionProperty = new Cesium.SampledPositionProperty()

  trajList.forEach(({ target_time, target_lon, target_lat }, index) => {
    const time = Cesium.JulianDate.fromDate(new Date(target_time))
    const position = Cesium.Cartesian3.fromDegrees(
      target_lon,
      target_lat,
      window.settings.mbDict[targetType].height
    )
    positionProperty.addSample(time, position)
    // viewer.entities.add({
    //   position,
    //   point: {
    //     pixelSize: 3,
    //     color: Cesium.Color.RED,
    //   },
    // })
  })
  positionProperty.setInterpolationOptions({
    interpolationDegree: 2,
    interpolationAlgorithm: Cesium.HermitePolynomialApproximation,
  })

  return {
    position: positionProperty,
    orientation: new Cesium.VelocityOrientationProperty(positionProperty),
  }
}

function getPath(startTime, endTime) {
  console.log(new Date(startTime).getTime() - new Date(endTime).getTime())
  return {
    path: new Cesium.PathGraphics({
      width: 0.5,
      // show: true,
      resolution: 1,
      leadTime: new Date(startTime).getTime() - new Date(endTime).getTime(),
      trailTime: new Date(startTime).getTime() - new Date(endTime).getTime(),
      material: Cesium.Color.fromRandom().withAlpha(1),
    }),
  }
}

function getAvailability(startTime, endTime) {
  const start = Cesium.JulianDate.fromDate(new Date(startTime))
  const stop = Cesium.JulianDate.fromDate(new Date(endTime))
  return {
    availability: new Cesium.TimeIntervalCollection([
      new Cesium.TimeInterval({ start: start, stop: stop }),
    ]),
  }
}

function removeAllMultiZBTraj() {
  for (let [key, entity] of multiZBTrajMap.entries()) {
    viewer.entities.remove(entity)
    multiZBTrajMap.delete(key)
  }
}