Bing Wallpaper Downloader

bing-images.js

#!/usr/bin/env node

var http = require('http');
var fs = require('fs');

var homePath = process.env.HOME || process.env.USERPROFILE;
var imagesPath = '/Pictures/bing-wallpapers';

if (!fs.existsSync(homePath + imagesPath))
  fs.mkdirSync(homePath + imagesPath);

function downloadImage(url, name)
{
  var filePath = homePath + imagesPath + '/' + name;
  if (fs.existsSync(filePath))
  {
    console.log('skipping', url);
    return;
  }

  console.log('downloading', url);

  http.get(url, function(response)
  {
    if (response.statusCode !== 200)
    {
      console.log('Couldn\'t download', url);
      return;
    }

    var file = fs.createWriteStream(filePath);
    response.on('data', function(data)
    {
      file.write(data);
    });

    response.on('end', function()
    {
      file.end();
    });
  });
}

http.get('http://www.bing.com/HPImageArchive.aspx?format=js&idx=0&n=10&mkt=en-US', function(response)
{
  var responseText = '';
  response.on('data', function(data)
  {
    responseText += data.toString();
  });

  response.on('end', function()
  {
    var json = JSON.parse(responseText);
    for (var i = 0; i < json.images.length; ++i)
    {
      var index = json.images[i].urlbase.lastIndexOf('/') + 1;
      var imgExt = '_1920x1200.jpg';
      var imgName = json.images[i].urlbase.substr(index) + imgExt;
      var imgPath = json.images[i].urlbase + imgExt;
      var imgUrl = 'http://www.bing.com' + imgPath;
      downloadImage(imgUrl, imgName);
    }
  });
});