EXPERIAN_LIB_DIR = File.dirname(__FILE__)
Dir["#{EXPERIAN_LIB_DIR}/element_numbers/*.rb"].each { |f| require(f) }

module Experian

  class DataDictionary

    def self.lookup(column, key)
      column = column.to_s.downcase.gsub(/\s+/, '')
      self.send("en_#{column}", key.to_s.strip)
    end

    def self.column_name(column)
      column = column.to_s.downcase.gsub(/\s+/, '')
      self.send("en_#{column}_column_name")
    end

    def self.description(column)
      column = column.to_s.downcase.gsub(/\s+/, '')
      self.send("en_#{column}_description")
    end

    def self.method_missing(method, *args, &block)
      method_parts = method.to_s.split('_')
      if (2..3) === method_parts.size and method_parts[0] == 'en'
        column = method_parts[1]
        if /^[0-9]{1,3}$/ =~ column
          column = "%04d" % column
          new_method = method_parts.size == 3 ? "en_#{column}_description".to_sym : "en_#{column}".to_sym
        elsif /[a-z]$/ =~ column
          letters = column.match(/[a-z]+$/)[0]
          column = "%04d" % column.to_i
          new_method = method_parts.size == 3 ? "en_#{column}#{letters}_description".to_sym : "en_#{column}#{letters}".to_sym
        end
        if self.methods.include?(new_method)
          return self.send(new_method, *args, &block)
        else
          super(new_method, *args, &block)
        end
      else
        super(method, *args, &block)
      end
    end

  end

end