module PowerTools
  module ActiveRecord
    EMAIL_FORMAT = /^([^@\s]+)@((?:[-a-zA-Z0-9]+\.)+[a-zA-Z]{2,})$/
    US_ZIP_FORMAT   = /^\d{5}([\-]\d{4})?$/
    US_STATE_FORMAT = /^[a-zA-Z]{2}$/
    US_TEL_FORMAT   = /^[0-9]{10}$/
    
    def self.included(base)
      base.extend(ClassMethods)
    end
    
    module ClassMethods
      
      def validates_email(*attr_names)
        options = { :with => EMAIL_FORMAT }
        options.update(attr_names.pop) if attr_names.last.is_a?(Hash)
        attr_names.push(options)
        
        validates_format_of *attr_names
      end
      
      def all(*args)
        find :all, *args
      end
      
      def [](id)
        find id
      end
      
      def first(*args)
        find :first, *args
      end
      
      def last(*args)
        find(:all, *args)[-1]
      end
      
    end
  end
end

ActiveRecord::Base.class_eval do
  include PowerTools::ActiveRecord
  include PowerTools::ActiveRecord::AccountStamp
  include PowerTools::ActiveRecord::Serialization
  extend  PowerTools::ActiveRecord::SetAssociationWithHash
end