(function (ns) {
  'use strict';
  let watchId = null;
  function normalize(position) { return { lat: position.coords.latitude, lon: position.coords.longitude, accuracy: position.coords.accuracy, timestamp: position.timestamp }; }
  ns.Geo = {
    current() {
      return new Promise((resolve, reject) => {
        if (!navigator.geolocation) return reject(new Error('Dieses Gerät unterstützt keine Geolokalisierung.'));
        navigator.geolocation.getCurrentPosition(p => resolve(normalize(p)), reject, { enableHighAccuracy: true, timeout: ns.Config.geolocationTimeoutMs, maximumAge: 30000 });
      });
    },
    start(callback, onError) {
      this.stop();
      watchId = navigator.geolocation.watchPosition(p => callback(normalize(p)), onError, { enableHighAccuracy: true, timeout: 20000, maximumAge: 5000 });
    },
    stop() { if (watchId != null) navigator.geolocation.clearWatch(watchId); watchId = null; }
  };
}(window.Wegwichtel));