Lightweight incoming fax handler via Phaxio

phaxio-sinatra.rb

#!/usr/bin/env ruby

require 'rubygems'
require 'sinatra'
require 'json'
require 'active_support/core_ext/object'
require 'pony'

FROM_ADDRESS = '[email protected]'

ROUTING = {
  '2035551212' => '[email protected]',
  :default => '[email protected]'
}

set :server, :thin
set :port, 1534

post '/incoming' do
  unless not params[:direction].blank? and not params[:fax].blank?
    halt 403, 'Missing required object information'
  end

  incoming = params[:direction] == 'received'
  fax = JSON.parse params[:fax]
  metadata = params[:metadata].blank? ? nil : JSON.parse(params[:metadata])

  fax['completed_at'] = Time.at(fax['completed_at']) if fax['status'] == 'success'

  Pony.mail(
    :via => :sendmail,
    :from => FROM_ADDRESS,
    :to => (ROUTING[fax['to_number']] || ROUTING[:default]),
    :subject => "Incoming Fax from #{fax['from_number']}, #{fax['num_pages']} page(s)",
    :body => "Don't you love archaic technologies?",
    :attachments => { params['filename'][:filename] => params['filename'][:tempfile].read }
  )

  "OK\n"
end