my script to collect data from google's santa tracker

christmas.js

var request = require('request');
var dateFormat = require('dateformat');
var fs = require('fs');
var colors = require('colors');

var destinations;//our final list of destinations

//function to get data from google - set on a timeout at the bottom to refresh it
function getData(){

  //standard headings
  var options = {
    method: "GET",
    url: 'https://santa-api.appspot.com/info?client=web&language=en&fingerprint=&routeOffset=0&streamOffset=0',
    headers: {
           'User-Agent': 'nodejs script 1'
         }
    };

    //completion function
    function callback(error, response, body) {
        if (!error && response.statusCode == 200) {
          var result = JSON.parse(body);

          //if we didn't have any destinations just set the array to it
          if (! destinations) {
              destinations = result.destinations;

              //display the destination to the terminal
              for (var i in result.destinations){

                  var d = result.destinations[i];

                  console.log(dateFormat(d.arrival, "hh:MM") + " - " +
                              dateFormat(d.departure, "hh:MM") + " - " +
                              d.region + " - " + d.city);
              }

              console.log(colors.yellow(destinations.length + " results"));

          } else {

            //check if we had any new rows
            if (result.destinations.length == destinations.length ) {
              //no new rows :(
              console.log(colors.grey(destinations.length + " results - no new rows"));
            } else {

              //how many do we have to add?
              var numberRowsToAdd = result.destinations.length - destinations.length;

                //add those
              for(var i = (result.destinations.length - numberRowsToAdd); i < result.destinations.length; i++){
                  var d = result.destinations[i];

                  destinations.push(d);
                  //all display them plz
                  console.log(dateFormat(d.arrival, "hh:MM") + " - " +
                              dateFormat(d.departure, "hh:MM") + " - " +
                              d.region + " - " + d.city);

              }
              //suffient new data
              writeFile();

              console.log(colors.red(destinations.length + " results - "+ numberRowsToAdd + " new rows"));
            }//end if number of records is different

          }//end if we didn't have any records


        } else {
          //ERROR!
          console.log(response);
        }
    }


    //send request.
    request(options, callback);

     //refresh every 30 secs
     setTimeout(getData, 30000);
}


//write to a file - it'll overwrite a file with the same minute
//this means tht when google clear all their data, hopefully i'll have almost the right number
    function writeFile(){

      var filename = dateFormat(new Date(), "HH-MM");
      fs.writeFile("files/christmas_"+filename+".JSON", JSON.stringify(destinations), function(err) {
          if(err) {
              return console.log(err);
          }

          console.log("The file was saved!");
      });

    }

//start my script running!
getData();