domotz-remote-pawn/src/commands/location.js

Domotz Agent

/** This file is part of Domotz Agent.
  * Copyright (C) 2016  Domotz Ltd
  *
  * Domotz Agent is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation, either version 3 of the License, or
  * (at your option) any later version.
  *
  * Domotz Agent is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with Domotz Agent.  If not, see <http://www.gnu.org/licenses/>.
  **/
/**
 * This command tries a set of free services in order to find the location of the Agent
 * Created by Iacopo Papalini <ipapalini@domotz.com> on 14/09/15.
 */


var getLocation = function (message, resourceLocator) {
    var getLocationFromService = resourceLocator.networkTools.geolocation.getLocationFromService;
    var results = {
        stats: {
            start: new Date(),
            end: null,
            elapsed_milliseconds: null,
            provider: null
        },
        location: {}
    };




    return {
        describe: function () {
            return message.correlationId + " - Get geographical location;  ";
        },
        execute: function (callback) {
            function finalize(location) {
                results.location = location;
                results.stats.end = new Date();
                results.stats.elapsed_milliseconds = results.stats.end.getTime() - results.stats.start.getTime();
                callback(results);
                return null;
            }

            var providers = ['maxmind', 'freegeoip', 'default'];
            function fetchData(){
                var provider = providers.shift();
                getLocationFromService(provider, resourceLocator, fetchData, finalize);
            }

            fetchData();
        }
    };
};

module.exports.command = getLocation;