/**
 * @ngdoc service
 * @name NavigatorGeolocation
 * @description
 *  Provides [defered/promise API](https://docs.angularjs.org/api/ng/service/$q) service for navigator.geolocation methods
 */
ngMap.service('NavigatorGeolocation', ['$q', function($q) {
  return {
    /**
     * @memberof NavigatorGeolocation
     * @param {function} success success callback function
     * @param {function} failure failure callback function
     * @example
     * ```
     *  NavigatorGeolocation.getCurrentPosition()
     *    .then(function(position) {
     *      var lat = position.coords.latitude, lng = position.coords.longitude;
     *      .. do something lat and lng
     *    });
     * ```
     * @returns {HttpPromise} Future object
     */
    getCurrentPosition: function() {
      var deferred = $q.defer();
      if (navigator.geolocation) {
        navigator.geolocation.getCurrentPosition(
          function(position) {
            deferred.resolve(position);
          }, function(evt) {
            console.error(evt);
            deferred.reject(evt);
          }
        );
      } else {
        deferred.reject("Browser Geolocation service failed.");
      }
      return deferred.promise;
    },

    watchPosition: function() {
      return "TODO";
    },

    clearWatch: function() {
      return "TODO";
    }
  };
}]);