(function (ns, $) {
  'use strict';

  async function offlineResponse(path) {
    if (!ns.OfflineStore) return null;
    if (path === '/health') {
      const available = await ns.OfflineStore.state() || (await ns.OfflineStore.routes()).length;
      return available ? { ok: true, offline: true } : null;
    }
    if (path.startsWith('/routes?')) {
      if (!await ns.OfflineStore.state() && !(await ns.OfflineStore.routes()).length) return null;
      return { routes: (await ns.OfflineStore.routes()).map(item => item.route), offline: true };
    }
    const response = await ns.OfflineStore.match(ns.Config.apiBase + path);
    return response ? response.json() : null;
  }

  async function request(path) {
    if (globalThis.navigator?.onLine === false) {
      const response = await offlineResponse(path);
      if (response) return response;
    }
    try {
      return await $.ajax({ url: ns.Config.apiBase + path, method: 'GET', dataType: 'json', cache: false, timeout: 10000 });
    } catch (error) {
      if (error.status > 0) throw error;
      const response = await offlineResponse(path);
      if (response) return response;
      throw error;
    }
  }

  function routeQuery(position) {
    const params = new URLSearchParams({ activatedOnly: 'true' });
    if (position) {
      params.set('lat', String(position.lat));
      params.set('lon', String(position.lon));
      params.set('radiusKm', String(ns.Config.routeRadiusKm));
    }
    return `/routes?${params.toString()}`;
  }

  ns.Api = {
    health: () => request('/health'),
    routes: position => request(routeQuery(position)),
    route: id => request(`/routes/${encodeURIComponent(id)}`)
  };
}(globalThis.Wegwichtel, globalThis.jQuery));