googleapi.js

module.exports = (function () {
  var config = require('./config')
  var Client = require('node-rest-client').Client
  var Q = require('q')

  var client = new Client()

  function googleapi () {
    console.log('registering googleapi methods')
    client.registerMethod('shortenUrl', 'https://www.googleapis.com/urlshortener/v1/url', 'POST')
  }

  googleapi.getShortUrl = function getShortUrl (url) {
    var deferred = Q.defer()
    var args = {
      parameters: { 'key': config.google_api_key },
      headers: { 'Content-Type': 'application/json' },
      data: { 'longUrl': url }
    }
    client.methods.shortenUrl(args, function (data, response) {
      console.log(data)
      if (response.statusCode === 200) {
        var json = JSON.parse(data)
        console.log('resolve short url: ' + json.id)
        deferred.resolve(json.id)
      } else {
        deferred.reject(new Error('Status code was ' + response.statusCode))
      }
    }).on('error', function (err) {
      console.log('something went wrong on the request', err.request.options)
      deferred.reject(new Error('Status code was ' + err.request.options))
    })

    return deferred.promise
  }

  googleapi()
  return googleapi
})()