module Buckaroo
  module Ideal
    class Status
      class UnknownStatusCode < StandardError; end
      
      STATES = {
        :completed => %w(071 121 151 171 190 242 243 244 245 246 247 254 255
                         301 401 461 462 463 464 551 601 701 801),
        :pending   => %w(000 001 070 090 091 100 105 120 126 135 136 150 156
                         157 170 176 177 253 300 400 460 500 550 600 700 710
                         790 791 792 793 800 811 814 815 831 834),
        :failed    => %w(072 073 074 075 076 101 102 103 104 106 122 123 124
                         125 137 138 139 152 153 155 158 159 172 173 175 178
                         179 201 203 204 205 206 207 251 252 260 261 262 302
                         303 304 305 306 309 402 409 410 411 414 421 422 425
                         466 468 490 491 492 501 552 553 554 555 556 560 581
                         590 602 605 609 610 612 690 702 703 704 705 706 707
                         708 711 712 720 721 802 803 804 810 812 813 816 820
                         821 822 823 824 830 833 835 836 890 891 900 901 910
                         931 932 933 934 935 940 941 942 943 944 945 946 947
                         948 949 950 951 952 953 954 955 956 960 961 962 963
                         964 971 972 973 974 975 976 977 978 980 981 982 983
                         990 991 992 993 999)
      }
      
      CSV_FILE = File.expand_path('../../../files/statuscodes.csv', __FILE__)
      
      if RUBY_VERSION < "1.9"
        require 'fastercsv'
        CSV = ::FasterCSV
      else
        require 'csv'
        CSV = ::CSV
      end
      
      attr_reader :code, :message
      
      def self.status_codes(csv_file = CSV_FILE)
        codes = {}
        
        CSV.foreach(csv_file, :col_sep => ';') do |row|
          codes[row[0]] = row[1]
        end
        
        codes
      end
      
      def initialize(code)
        if message = self.class.status_codes[code]
          @code    = code
          @message = message
        else
          raise UnknownStatusCode
        end
      end
      
      def state
        STATES.each do |state, codes|
          return state if codes.include? @code
        end
        
        :unknown
      end
      
      def completed?; state == :completed; end
      def pending?;   state == :pending;   end
      def failed?;    state == :failed;    end
      
      def ==(other)
        other.respond_to?(:code) && other.code == code
      end
    end
  end
end