gistfile1.rb

class Routing::Router
  def initialize(recipient, options = {})
    options.assert_valid_keys(:customer)

    @customer  = options[:customer]
    @recipient = PhoneNumber.new(recipient).internationalise(:local_country => @customer.site_country)
  end

  def destination
    destination = (
      customers_prefered_destination || most_economical_destination
    )

    raise UnroutableError if destination == nil

    destination = destination.aliased_to if destination.aliased_to
    return destination
  end

  def most_economical_destination

  end

  def customers_prefered_destination

  end
end