import config from './../config'
import axios from 'axios'
import { LatLng } from './common'

export interface GetNearbyRequestOptions {
  currentLocation: LatLng
  serviceType: string
  maxCount?: number
  searchRadius?: number
}

export interface GetNearbyResponse {
  status: string
  currentLocation: {
    latitude: number
    longitude: number
  }
  maxCount: number
  msg: string
  searchRadius: number
  serviceType: string
  results: Array<GetNearbyResponseResult>
}

interface GetNearbyResponseResult {
  distance: number
  eta: number
  id: string
  location: {
    latitude: number
    longitude: number
  }
}

export const requestGetNearby = async (opt: GetNearbyRequestOptions): Promise<GetNearbyResponse | null> => {
  if (!config.API_KEY) {
    throw new Error('In order to call the NextBillion.ai API, you must provide a valid API Key.')
  }

  if (!config.API_HOST) {
    throw new Error('An API host is required to make request to NextBillion.ai API.')
  }

  if (!opt.currentLocation.lat && opt.currentLocation.lat !== 0) {
    throw new Error('Invalid currentLocation lat')
  }

  if (!opt.currentLocation.lng && opt.currentLocation.lng !== 0) {
    throw new Error('Invalid currentLocation lng')
  }

  const params: any = {
    key: config.API_KEY,
    currentlocation: `${opt.currentLocation.lat},${opt.currentLocation.lng}`,
    servicetype: opt.serviceType,
  }

  if (opt.maxCount !== undefined && !isNaN(opt.maxCount)) {
    params['maxcount'] = opt.maxCount
  }

  if (opt.searchRadius !== undefined && !isNaN(opt.searchRadius)) {
    params['searchradius'] = opt.searchRadius
  }

  return await axios
    .get(`https://${config.API_HOST}/getnearby`, {
      params,
    })
    .then((resp) => resp.data as GetNearbyResponse)
}