class Bordle 
  class Dictionary
    DICTIONARY_FILE = "/usr/share/dict/french"

    property length : UInt8
    property data : Array(String)

    def initialize(length : UInt8)
      @length = length
      @data = [] of String
      load_data

    end

    def load_data
      # use french dictionary from wfrench package
      if ! File.exists? DICTIONARY_FILE
        STDERR.puts "ERROR: dictionary file missing! (#{DICTIONARY_FILE})"
        STDERR.puts "       Please install then wfrench package on your system"
        exit 1
      end

      lines = File.read_lines(DICTIONARY_FILE)
      @data = 
        lines
        .select {|word| word.size == @length }
        .map { |word| word.tr( TR_DIACRITICS, TR_ASCII ) }
      end
    def includes?(word)
      @data.includes? word
    end

    def choose_word
      @data
        .sample(1)
        .first
    end
  end
end