import { defineStore } from 'pinia'

interface SysState {
  ScrollDown: boolean
  /**
   * 分类顶部激活id
   */
  topNavActive: string
  /**
   * 二级分类激活id
   */
  leftActive: string
  searchList: string[]
  /**
   * 回到顶部
   */
  backTop: boolean
  /**
   * 店铺名称
   */
  SelectShopInfo: Api.xsbShopList
  /**
   * 店铺列表
   */

  xsbShopList: Api.xsbShopList[]

}
export const useSysXsbStore = defineStore('system-xsb', {
  state: (): SysState => ({
    ScrollDown: false,
    topNavActive: '',
    leftActive: '',
    searchList: [],
    backTop: false,
    SelectShopInfo: { shopId: 0 },
    xsbShopList: [],
  }),
  actions: {
    getTabbarItemValue(name: string) {
      if (name === 'xsb-cart') {
        const { getTotalNum } = storeToRefs(useSmqjhCartStore())
        return getTotalNum.value
      }
    },
    async getAllShopList() {
      return new Promise((resolve, reject) => {
        Apis.xsb.shopList({}).then((res) => {
          this.xsbShopList = res.data
          const { Location } = storeToRefs(useAddressStore())
          if (Location.value.latitude == null || Location.value.longitude == null) {
            useAddressStore().getLocation()
            return
          }
          let minDistance = Infinity
          for (const shop of res.data) {
            if (shop.shopLat && shop.shopLng) {
              const distance = this.getDistance(
                Location.value.latitude,
                Location.value.longitude,
                Number(shop.shopLat),
                Number(shop.shopLng),
              )
              if (distance < minDistance) {
                minDistance = distance
                if (!this.SelectShopInfo) {
                  this.SelectShopInfo = { ...shop, distance: Number(distance.toFixed(2)) }
                }
              }
            }
          }
          resolve(res)
        }).catch((err) => { reject(err) })
      })
    },
    /**
     * 计算距离
     * @param lat1
     * @param lng1
     * @param lat2
     * @param lng2
     * @returns 计算距离
     */
    getDistance(lat1: number, lng1: number, lat2: number, lng2: number) {
      const R = 6371 // 地球半径（公里）
      const dLat = (lat2 - lat1) * Math.PI / 180
      const dLng = (lng2 - lng1) * Math.PI / 180
      const a = Math.sin(dLat / 2) * Math.sin(dLat / 2)
        + Math.cos(lat1 * Math.PI / 180) * Math.cos(lat2 * Math.PI / 180)
        * Math.sin(dLng / 2) * Math.sin(dLng / 2)
      const c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a))
      return R * c // 距离（公里）
    },

  },
})