import arrows from '../arrows/arrows'

export const currentBuildingFloorsList = state => {
  const currentBuilding = state.buildingList.find(building => building.buildingCode === state.currentFloor.buildingCode)
  return currentBuilding?.floorList ?? []
}

const getCodeByAngle = angle =>
  angle < (Math.PI / 8) * 1 || angle > (Math.PI / 8) * 15
    ? '8003'
    : angle >= (Math.PI / 8) * 1 && angle < (Math.PI / 8) * 3
    ? '8002'
    : angle >= (Math.PI / 8) * 3 && angle < (Math.PI / 8) * 5
    ? '8001'
    : angle >= (Math.PI / 8) * 5 && angle < (Math.PI / 8) * 7
    ? '8008'
    : angle >= (Math.PI / 8) * 7 && angle < (Math.PI / 8) * 9
    ? '8007'
    : angle >= (Math.PI / 8) * 9 && angle < (Math.PI / 8) * 11
    ? '8006'
    : angle >= (Math.PI / 8) * 11 && angle < (Math.PI / 8) * 13
    ? '8005'
    : '8004'
const getDistance = (a, b) => Math.sqrt((b.x - a.x) * (b.x - a.x) + (b.y - a.y) * (b.y - a.y))
export const currentFloorShopMap = ({ currentFloor: device, shopList, mapData }) => {
  if (!mapData || !shopList.length) return {}
  device.angle = Number(device.angle)
  if (isNaN(device.angle)) device.angle = 0
  const building = mapData[0]
  const map = building.buildArr[device.floorOrder].mapData
  const nodes = map.path.nodes
  const deviceX = nodes[device.location].x
  const deviceY = nodes[device.location].y
  return shopList
    .filter(shop => shop.floor === device.floor)
    .reduce((acc, shop) => {
      const result = {}
      try {
        const xaxis = JSON.parse(shop.xaxis).map(Number)
        let angle = (Math.atan2(deviceY - xaxis[2], xaxis[0] - deviceX) / Math.PI) * 180 - device.angle
        if (angle < 0) angle += 360
        if (angle > 360) angle -= 360
        angle = (angle / 180) * Math.PI
        result.distance = Math.ceil(getDistance({ x: deviceX, y: deviceY }, { x: xaxis[0], y: xaxis[2] }) / building.scale)

        result.dir = arrows[getCodeByAngle(angle)]
      } catch (error) {
        result.dir = arrows[getCodeByAngle(0)]
      }
      return { ...acc, [shop.shopId]: result }
    }, {})
}