handlers.js

var config = require('./config');
var fs = require('fs');

function home(response, postData) {
  response.writeHead(200, {'Content-Type': 'text/html'});
  response.end(fs.readFileSync('./static/index.html'));
}

function upload(response, postData) {

  var file = JSON.parse(postData);
  var fileRootName = file.name.split('.').shift();
  var fileExtension = file.name.split('.').pop();
  var filePathBase = config.upload_dir + '/';
  var fileRootNameWithBase = filePathBase + fileRootName;
  var filePath = fileRootNameWithBase + '.' + fileExtension;
  var fileID = 2;
  var fileBuffer;

  while ( fs.existsSync(filePath) ) {
    filePath = fileRootNameWithBase + '(' + fileID + ').' + fileExtension;
    fileID += 1;
  }

  file.contents = file.contents.split(',').pop();

  fileBuffer = new Buffer(file.contents, "base64");

  if ( config.s3_enabled ) {

    var knox = require('knox');
    var client = knox.createClient(config.s3);
    var headers = {'Content-Type': file.type};

    client.putBuffer(fileBuffer, fileRootName, headers, function (err, res) {

      if ( typeof res !== "undefined" && 200 === res.statusCode ) {
        console.log('Uploaded to: %s', res.client._httpMessage.url);
        response.statusCode = 200;
      } else {
        console.log('Upload failed!');
        response.statusCode = 500;
      }

      response.end();
    });

  } else {
    fs.writeFileSync(filePath, fileBuffer);
    response.statusCode = 200;
    response.end();
  }
}

function serveStatic(response, pathname, postData) {

  var extension = pathname.split('.').pop();
  var extensionTypes = {
    css: 'text/css',
    gif: 'image/gif',
    jpg: 'image/jpeg',
    jpeg: 'image/jpeg',
    js: 'application/javascript',
    png: 'image/png'
  };

  response.writeHead(200, {'Content-Type': extensionTypes[extension]});
  response.end(fs.readFileSync('./static' + pathname));
}

module.exports = {
  home: home,
  serveStatic: serveStatic,
  upload: upload
};