(function () {
    'use strict';

    var app = angular.module('location');

    function datacontext($q, config, $http) {

        var service = {
            getGeocodeByPlaceName: getGeocodeByPlaceName
        };

        return service;

        function handleError(response) {

            // The API response from the server should be returned in a
            // nomralized format. However, if the request was not handled by the
            // server (or what not handles properly - ex. server error), then we
            // may have to normalize it on our end, as best we can.
            if (
                !angular.isObject(response.data) ||
                !response.data.message
                ) {

                return ($q.reject("An unknown error occurred."));
            }

            // Otherwise, use expected error message.
            return ($q.reject(response.data.message));
        }


        // I transform the successful response, unwrapping the application data
        // from the API response payload.
        function handleSuccess(response) {
            return (response.data);
        }


        function getGeocodeByPlaceName(placeName) {
            var request = $http({
                method: "get",
                url: 'https://maps.googleapis.com/maps/api/geocode/json?address=' + placeName + '&key=' + config.googleApiKey,
            });

            return (request.then(handleSuccess, handleError));
        }

    }

    app.factory('locationService', ['$q', 'locationServiceConfig', '$http', datacontext]);
})();