// Alexa helper to fetch latest snapshot issue
 // Mike Schilli, 2017 (m@perlmeister.com)
 var APP_ID     = undefined;
 var AlexaSkill = require('./AlexaSkill');

 var LatestSnapshot = function () {
     AlexaSkill.call(this, APP_ID);
 };

 var http = require('http');

 LatestSnapshot.prototype = Object.create(AlexaSkill.prototype);
 LatestSnapshot.prototype.constructor = LatestSnapshot;

 LatestSnapshot.prototype.intentHandlers = {
   "LatestSnapshotIntent": function (intent, session, response) {
     getData(response);
   },
   "AMAZON.HelpIntent": function (intent, session, response) {
     response.ask("Hello", "Hello");
   }
 };

 function getData(response) {
   http.get("http://perlmeister.com/articles.json", function(res) {
     var json_string = '';

     res.on('data', function(data) {
       json_string += data;
     });

     res.on('end', function() {
       var snapshots = JSON.parse(json_string);
       var latest_issue = snapshots.issues[0];
       var answer = latest_issue.month + " " +
                    latest_issue.year;

       response.tellWithCard(answer, "Latest Snapshot", answer);
     });
   });
 }

 exports.handler = function (event, context) {
     var latestSnapshot = new LatestSnapshot();
     latestSnapshot.execute(event, context);
 };