PaymentProxy.rb

PaymentProxy.rb

class PaymentProxy
  def initialize(gateway)
    @gateway = gateway
    @observers = []
  end

  def register_observer(o)
    # ...
  end
  
  def create_recurring_payment(user, products, price)
    if @gateway.recurring_payment(…).success
      @observers.each do |observer|
        observer.notify(:payment_succeeded, products, price)
      end
    else
      self.errors.add(…)
      @observers.each do |observer|
        observer.notify(:payment_failed, products, price, errors)
      end
    end
  end

  def cancel_recurring_payment(opts = {})
  end

  def update_recurring_payment(opts = {})
  end

  def refund_recurring_payment(opts = {})
  end

end