class Geocoder::Railtie

def self._geocoder_init(options)
  unless _geocoder_initialized?
    class_inheritable_reader :geocoder_options
    class_inheritable_hash_writer :geocoder_options
  end
  self.geocoder_options = options
  unless _geocoder_initialized?
    include Geocoder::ActiveRecord
  end
end

def self._geocoder_initialized?
  included_modules.include? Geocoder::ActiveRecord
end

def self.geocoded_by(address_attr, options = {})
  _geocoder_init(
    :user_address => address_attr,
    :latitude  => options[:latitude]  || :latitude,
    :longitude => options[:longitude] || :longitude
  )
end

def self.insert
  return unless defined?(::ActiveRecord)
  ##
  # Add methods to ActiveRecord::Base so Geocoder is accessible by models.
  #
  ::ActiveRecord::Base.class_eval do
    ##
    # Set attribute names and include the Geocoder module.
    #
    def self.geocoded_by(address_attr, options = {})
      _geocoder_init(
        :user_address => address_attr,
        :latitude  => options[:latitude]  || :latitude,
        :longitude => options[:longitude] || :longitude
      )
    end
    ##
    # Set attribute names and include the Geocoder module.
    #
    def self.reverse_geocoded_by(latitude_attr, longitude_attr, options = {})
      _geocoder_init(
        :fetched_address => options[:address] || :address,
        :latitude  => latitude_attr,
        :longitude => longitude_attr
      )
    end
    def self._geocoder_init(options)
      unless _geocoder_initialized?
        class_inheritable_reader :geocoder_options
        class_inheritable_hash_writer :geocoder_options
      end
      self.geocoder_options = options
      unless _geocoder_initialized?
        include Geocoder::ActiveRecord
      end
    end
    def self._geocoder_initialized?
      included_modules.include? Geocoder::ActiveRecord
    end
  end
end

def self.reverse_geocoded_by(latitude_attr, longitude_attr, options = {})
  _geocoder_init(
    :fetched_address => options[:address] || :address,
    :latitude  => latitude_attr,
    :longitude => longitude_attr
  )
end