department-of-veterans-affairs/vets-website

import mbxGeo from '@mapbox/mapbox-sdk/services/geocoding';
import {
  MAPBOX_QUERY_TYPES,
  CountriesList,
  mapboxClient,
} from 'platform/utilities/facilities-and-mapbox';
import {
  SEARCH_FAILED,
  SEARCH_QUERY_UPDATED,
  GEOCODE_FAILED,
} from '../../utils/actionTypes';
import { distBetween } from '../../utils/facilityDistance';

const mbxClient = mbxGeo(mapboxClient);

/**
 * Calculates a human readable location (address, zip, city, state) updated
 * from the coordinates center of the map
 */
export const genSearchAreaFromCenter = query => {
  const { lat, lng, currentMapBoundsDistance, currentBounds } = query;
  return dispatch => {
    if (currentMapBoundsDistance > 500) {
      dispatch({ type: GEOCODE_FAILED });
      dispatch({ type: SEARCH_FAILED, error: { type: 'mapBox' } });
    } else {
      const types = MAPBOX_QUERY_TYPES;
      mbxClient
        .reverseGeocode({
          countries: CountriesList,
          types,
          query: [lng, lat],
        })
        .send()
        .then(({ body: { features } }) => {
          const zip =
            features[0].context.find(v => v.id.includes('postcode')) || {};
          const location = zip.text || features[0].place_name;

          // Radius is computed as the distance from the center point
          // to the western edge of the bounding box
          const radius = distBetween(lat, lng, lat, currentBounds[0]);
          dispatch({
            type: SEARCH_QUERY_UPDATED,
            payload: {
              radius,
              searchString: location,
              context: location,
              searchArea: {
                locationString: location,
                locationCoords: {
                  lng,
                  lat,
                },
              },
              mapBoxQuery: {
                placeName: features[0].place_name,
                placeType: features[0].place_type[0],
              },
              searchCoords: null,
              bounds: currentBounds,
              position: {
                latitude: lat,
                longitude: lng,
              },
            },
          });
        })
        .catch(_ => {
          dispatch({ type: GEOCODE_FAILED });
          dispatch({ type: SEARCH_FAILED, error: { type: 'mapBox' } });
        });
    }
  };
};