dyomedea/src/lib/osm.ts

import memoize from 'memoizee';

export const _findAddress = async (
  lon: number,
  lat: number,
  locale: () => string
) => {
  try {
    const response = await fetch(
      `https://nominatim.openstreetmap.org/reverse?lat=${lat}&lon=${lon}&format=jsonv2&addressdetails=1&extratags=1&namedetails=1&accept-language=${locale()}`,
      { headers: { 'User-Agent': 'Dyomedea' } }
    );
    const data = await response.json();
    console.log({ caller: 'findAddress', lon, lat, data });
    return data;
  } catch (error) {
    console.error({ caller: 'findAddress', lon, lat, error });
    return {};
  }
};

export const findAddress = memoize(_findAddress, {
  promise: true,
  max: 1000,
  maxAge: 36000000,
});

export const getVillageOrTown = (address: any) => {
  const citySynonyms = [
    'village',
    'city',
    'town',
    'municipality',
    'hamlet',
    'suburb',
    'locality',
  ];

  for (let synonym of citySynonyms) {
    console.log({ caller: 'getVillageOrTown', address, synonym });
    if (synonym in address?.address) {
      return address?.address[synonym];
    }
  }
  return address?.address?.country;
};