gistfile1.txt

module SpreePolkaspots
  class Engine < Rails::Engine
    def self.activate
      Order.class_eval do
 
        Order.state_machines[:state] = StateMachine::Machine.new(Order, :initial => 'cart') do
 
          after_transition :to => 'complete', :do => :complete_order
          before_transition :to => 'complete', :do => :process_payment
          before_transition :to => 'delivery', :do => :valid_zip_code?
 
          event :next do
            transition :from => 'cart', :to => 'delivery'
            transition :from => 'delivery', :to => 'payment'
            transition :from => 'payment', :to => 'confirm'
            transition :from => 'confirm', :to => 'complete'
          end
 
          event :cancel do
            transition :to => 'canceled', :if => :allow_cancel?
          end
          event :return do
            transition :to => 'returned', :from => 'awaiting_return'
          end
          event :resume do
            transition :to => 'resumed', :from => 'canceled', :if => :allow_resume?
          end
          event :authorize_return do
            transition :to => 'awaiting_return'
          end

          before_transition :to => 'complete' do |order|
            begin
              order.process_payments!
            rescue Core::GatewayError
              !!Spree::Config[:allow_checkout_on_gateway_error]
            end
          end

          before_transition :to => ['delivery'] do |order|
            order.shipments.each { |s| s.destroy unless s.shipping_method.available_to_order?(order) }
          end

          after_transition :to => 'complete', :do => :finalize!
          after_transition :to => 'delivery', :do => :create_tax_charge!
          after_transition :to => 'payment',  :do => :create_shipment!
          after_transition :to => 'resumed',  :do => :after_resume
          after_transition :to => 'canceled', :do => :after_cancel
        end
 
      end
    end
  end
end