Download Chromecast backgrounds

download.js

var https = require('https');
var fs = require('fs');
var url = 'https://raw.githubusercontent.com/dconnolly/chromecast-backgrounds/master/backgrounds.json';

Array.prototype.getLast = function() {
  return this[this.length - 1];
};

function logFail(err){
  console.log('Failed!');
  console.error(err);
}

function download(arr, index){
  var item = arr[index];
  if (!item) return;
  var name = item.url.split('/').getLast();
  name = item.author + name;
  if (name.substr(-4) !== '.jpg') {
    name += '.jpg';
  }
  var file = fs.createWriteStream(name);
  https.get(item.url, function (res){
    res.pipe(file);
    res.on('end', function(){
      console.log('Finished downloading ' + name );
      file.end();
      download(arr, index+1);
    });
    res.on('error', logFail)
  });
}

https.get(url, function  (listRes) {
  var body = '';
  listRes.on('data', function(chunk){
    body += chunk;
  });
  listRes.on('error', logFail);
  listRes.on('end', function(){
    var arr = JSON.parse(body);
    download(arr, 0);
  });
}).on('error', logFail);

one-shot.js

var https = require('https');
var fs = require('fs');
var url = 'https://raw.githubusercontent.com/dconnolly/chromecast-backgrounds/master/backgrounds.json';

function makeName(item) {
  var name = item.url.split('/');
  name = name[name.length - 1];
  name = item.author + name;
  if (name.substr(-4) !== '.jpg') { name += '.jpg'; }
  return name;
}

https.get(url, function  (listRes) {
  var body = '';
  listRes.on('data', function(chunk){ body += chunk; });
  listRes.on('end', function(){

    JSON.parse(body).forEach(function(item){
      var file = fs.createWriteStream(makeName(item));

      https.get(item.url, function (res){
        res.pipe(file);
        res.on('end', function(){ file.end(); });
      });
    });
  });
});