## helm/acts_as/account.rb
require 'helm/authentication'
module Helm
  module ActsAs
    module Account
      def self.included(base)
        base.extend ClassMethods
        base.send :include, Helm::ActsAs::Account::InstanceMethods

        base.alias_method_chain :authenticate, :helm
      end

      module ClassMethods
        alias_method_chain :authenticate, :helm
        def authenticate_with_helm(login, password)
          user = authenticate_without_helm(login, password)
          return user unless user.nil?

          # user is nil, so they weren't successfully authenticated without helm.
          user = find(:first, :conditions => {:login => login})

          return nil unless user.nil? or not user.is_helm_account?
          return nil unless Helm::Authentication.verify(login, password)

          # update or store the user
          if user
            user.update_attributes(:password => password, :password_confirmation => password)
          else
            create(:login => login, :password => password, :password_confirmation => password)
          end
        end
      end

      module InstanceMethods
        def is_helm_account?
          self.is_helm_account
        end
      end
    end
  end
end