Integration Code Organization

gistfile1.rb

module AuthenticatesExternally
  extend ActiveSupport::Concern

  included do
    include AASM
    aasm_column :state
    aasm_initial_state :unconfigured
    aasm_state :auth_new
    aasm_state :auth_validate
    aasm_state :configured

    aasm_event :unconfigure do 
      transitions :to => :unconfigured, :from => [:configured, :unconfigured, :auth_new, :auth_validate]
    end

    aasm_event :configure do
      transitions :to => :configured,
                  :from => [:unconfigured, :configured, :auth_new, :auth_validate]
    end

    aasm_event :auth_new do
      transitions :to => :auth_new, :from => [:unconfigured, :auth_validate, :auth_new]
    end

    aasm_event :auth_validate do
      transitions :to => :auth_validate, :from => [:auth_new, :auth_validate]
    end
  end
end


module HandlesFormSubmissions
  def self.handle_form_submission(form_submission_id, handler_id)
    ...
  end

  def self.log_form_submission(handler, fs)
    ..
  end
  ...
end


class MailChimp < Integration
  include AuthenticatesExternally
  include HandlesFormSubmissions
  ...
  # MailChimp specific methods here
  ...
end