angular.js getting location with html5 location api and reverse geocoding

agularjs reverse geocoding

// to get the current latitude and longitude from browser
// credits https://github.com/arunisrael/angularjs-geolocation
'use strict';

angular.module('geolocation',[]).constant('geolocation_msgs', {
        'errors.location.unsupportedBrowser':'Browser does not support location services',
        'errors.location.notFound':'Unable to determine your location',
});

angular.module('geolocation')
  .factory('geolocation', ['$q','$rootScope','$window','geolocation_msgs',function ($q,$rootScope,$window,geolocation_msgs) {
    return {
      getLocation: function () {
        var deferred = $q.defer();
        if ($window.navigator && $window.navigator.geolocation) {
          $window.navigator.geolocation.getCurrentPosition(function(position){
            $rootScope.$apply(function(){deferred.resolve(position);});
          }, function(error) {
            $rootScope.$broadcast('error',geolocation_msgs['errors.location.notFound']);
            $rootScope.$apply(function(){deferred.reject(geolocation_msgs['errors.location.notFound']);});
          });
        }
        else
        {
          $rootScope.$broadcast('error',geolocation_msgs['errors.location.unsupportedBrowser']);
          $rootScope.$apply(function(){deferred.reject(geolocation_msgs['errors.location.unsupportedBrowser']);});
        }
        console.log(deferred.promise);
        return deferred.promise;
      }
    };
}]);


geocoder
// uses ngStorage module
//based on  https://gist.github.com/benmj/6380466
//http://stackoverflow.com/questions/14464945/add-queueing-to-angulars-http-service
'use strict';

angular.module('geocoder', ['ngStorage']).factory('Geocoder', function ($localStorage, $q, $timeout) {
var locations = $localStorage.locations ? JSON.parse($localStorage.locations) : {};
 
var queue = [];
 
// Amount of time (in milliseconds) to pause between each trip to the
// Geocoding API, which places limits on frequency.
var queryPause = 250;
 
/**
* executeNext() - execute the next function in the queue.
* If a result is returned, fulfill the promise.
* If we get an error, reject the promise (with message).
* If we receive OVER_QUERY_LIMIT, increase interval and try again.
*/
var executeNext = function () {
var task = queue[0],
geocoder = new google.maps.Geocoder();
 
geocoder.geocode({'latLng': task.latlng}, function (result, status) {
if (status === google.maps.GeocoderStatus.OK) {
  var geoaddress = {
  address: result[1].formatted_address
};
 
queue.shift();
 
locations[task.latlng] = geoaddress;
$localStorage.locations = JSON.stringify(geoaddress);
 
task.d.resolve(geoaddress);
 
if (queue.length) {
  $timeout(executeNext, queryPause);
}
} else if (status === google.maps.GeocoderStatus.ZERO_RESULTS) {
  queue.shift();
  task.d.reject({
  type: 'zero',
  message: 'Zero results for geocoding latlng ' + task.latlng
});
} else if (status === google.maps.GeocoderStatus.OVER_QUERY_LIMIT) {
  queryPause += 250;
  $timeout(executeNext, queryPause);
} else if (status === google.maps.GeocoderStatus.REQUEST_DENIED) {
  queue.shift();
  task.d.reject({
  type: 'denied',
  message: 'Request denied for geocoding latlng ' + task.latlng
});
} else if (status === google.maps.GeocoderStatus.INVALID_REQUEST) {
  queue.shift();
  task.d.reject({
  type: 'invalid',
  message: 'Invalid request for geocoding latlng' + task.latlng
});
}
});
};
 
return {
addressForLatLng : function (lat, lng) {
var d = $q.defer();
var lat = parseFloat(lat);
var lng = parseFloat(lng);
var latlng = new google.maps.LatLng(lat, lng);
if (latlng in locations) {
   $timeout(function () {
   d.resolve(locations[latlng]);
});
} else {
  queue.push({
  latlng: latlng,
  d: d
});
if (queue.length === 1) {
  executeNext();
}
}
return d.promise;
}
};
});


//usage: 
angular.module('myApp',['geolocation', 'geocoder'])
  .controller('geoCtrl', function ($scope,geolocation,Geocoder ) {
    geolocation.getLocation().then(function(data){
      console.log(data);
      Geocoder.addressForLatLng(data.coords.latitude, data.coords.longitude).then(function(data){
      	console.log(data)
      })
      
    });
});