http.rb

#!/usr/bin/env ruby

require 'httparty'

class UrlApi
  auth = {:username => "nottellingyou", :password => "******"}
  @apiresponse = HTTParty.get("link_im_paring_goes_here", :basic_auth => auth)

  def get_uri
    @response = JSON.parse(@apiresponse.body)
    @uri = response['uri']
  end
end

download_url = UrlApi.new
puts download_url.get_uri