Как определить город посетителя через Tilda

<script>
(function() {
  'use strict';

  const CACHE_ENABLED = true;
  const CACHE_HOURS = 24;
  const NOCITY_TEXT = 'Ваш город';
  const GEO_TIMEOUT = 15000;

  function getCachedCity() {
    if (!CACHE_ENABLED) return null;
    try {
      const cached = localStorage.getItem('tildaGeoCity');
      if (!cached) return null;
      const data = JSON.parse(cached);
      const maxAge = CACHE_HOURS * 60 * 60 * 1000;
      if (Date.now() - data.timestamp < maxAge) {
        console.log('[TildaGeo] Город из кеша:', data.city);
        return data.city;
      }
      localStorage.removeItem('tildaGeoCity');
    } catch (e) {
      localStorage.removeItem('tildaGeoCity');
    }
    return null;
  }

  function setCachedCity(city) {
    if (!CACHE_ENABLED || !city) return;
    try {
      localStorage.setItem('tildaGeoCity', JSON.stringify({
        city: city,
        timestamp: Date.now()
      }));
    } catch (e) {}
  }

  function displayCity(city) {
    const text = city || NOCITY_TEXT;
    document.querySelectorAll('a[href="#yourcity"]').forEach(function(el) {
      el.textContent = text;
    });
  }

  function fetchGeo() {
    return new Promise(function(resolve) {
      var controller = new AbortController();
      var timeoutId = setTimeout(function() {
        controller.abort();
      }, GEO_TIMEOUT);

      fetch('https://geo.tildacdn.com/geo/full/', { signal: controller.signal })
        .then(function(response) {
          if (timeoutId) clearTimeout(timeoutId);
          if (!response || !response.ok) return null;
          return response.text();
        })
        .then(function(text) {
          var parsed = text ? JSON.parse(text) : null;
          resolve(parsed);
        })
        .catch(function() {
          resolve(null);
        });
    });
  }

  function extractCity(data) {
    if (!data) return null;
    try {
      var city = data.city && (data.city.name_ru || data.city.name_en);
      if (!city && data.region) {
        city = data.region.name_ru || data.region.name_en;
      }
      return city || null;
    } catch (e) {
      return null;
    }
  }

  function init() {
    var cached = getCachedCity();
    if (cached) displayCity(cached);

    fetchGeo().then(function(data) {
      var city = extractCity(data);
      if (city) {
        setCachedCity(city);
        displayCity(city);
        console.log('[TildaGeo] Город:', city);
      } else if (!cached) {
        displayCity(null);
      }
    }).catch(function(err) {
      console.error('[TildaGeo] Ошибка:', err);
      if (!cached) displayCity(null);
    });
  }

  if (document.readyState === 'loading') {
    document.addEventListener('DOMContentLoaded', init);
  } else {
    init();
  }
})();
</script>

<style>
  a[href="#yourcity"] {
    pointer-events: none;
  }
</style>