module Chouette
  class Direction < ActiveSupport::StringInquirer
    def initialize(text_code, numerical_code)
      super text_code.to_s
      @numerical_code = numerical_code
    end

    def self.new(text_code, numerical_code = nil)
      if text_code and numerical_code
        super
      elsif self === text_code 
        text_code
      else
        if Fixnum === text_code
          text_code, numerical_code = definitions.rassoc(text_code)
        else
          text_code, numerical_code = definitions.assoc(text_code.to_s)
        end

        super text_code, numerical_code
      end
    end

    def to_i
      @numerical_code
    end

    def inspect
      "#{to_s}/#{to_i}"
    end

    def name
      to_s
    end

    @@definitions = [
      ["straight_forward", 0],
      ["backward", 1],
      ["clock_wise", 2],
      ["counter_clock_wise", 3],
      ["north", 4],
      ["north_west", 5],
      ["west", 6],
      ["south_west", 7],
      ["south", 8],
      ["south_east", 9],
      ["east", 10],
      ["north_east", 11]
    ]
    cattr_reader :definitions

    @@all = nil
    def self.all
      @@all ||= definitions.collect do |text_code, numerical_code|
        new(text_code, numerical_code)
      end
    end
  end
end