# Copyright (c) 2006 Danger Canty http://6brand.com
# 
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
# 
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
# 
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

# Many thanks to Rick Olson (http://techno-weenie.net)
# This plugin (like countless others) was only written after a careful
# examination of his productions.


module ActiveRecord #:nodoc:
  module Acts #:nodoc:
    module Zipcoded
      def self.included(base) # :nodoc:
        base.extend ClassMethods
      end

      module ClassMethods
        def acts_as_zipcoded(options = {}, &extension)
          # don't allow multiple calls
          return if self.included_modules.include?(ActiveRecord::Acts::Zipcoded::ActMethods)
          include ActiveRecord::Acts::Zipcoded::ActMethods
          class_eval do
            belongs_to :acts_as_zipcoded_model, :class_name => 'Zip', :foreign_key => :zip_id
          end
          # create the Zip model
          const_set('Zip', Class.new(ActiveRecord::Base)).class_eval do
            def before_save; false; end
          end
        end
      end
    
      module ActMethods
        def zipcode
          self.zip_id
        end
        def zipcode=(code)
          self.acts_as_zipcoded_model = Zip.find(code) rescue nil
        end
        def city
          acts_as_zipcoded_model ? acts_as_zipcoded_model.city : nil
        end
        def state
          acts_as_zipcoded_model ? acts_as_zipcoded_model.state : nil
        end
      end
    end
  end
end

ActiveRecord::Base.send :include, ActiveRecord::Acts::Zipcoded