module JamRuby

  class Profanity
    @@dictionary_file  = File.join(File.dirname(__FILE__), '../../..', 'config/profanity.yml')
    @@dictionary = nil

    def self.dictionary
      @@dictionary ||= load_dictionary
    end

    def self.load_dictionary
      YAML.load_file(@@dictionary_file)
    end

    def self.check_word(word)
      dictionary.include?(word.downcase)
    end

    def self.is_profane?(text)
      return false if text.nil?

      text.split(/\W+/).each do |word|
        return true if check_word(word)
      end
      return false
    end
  end


end

# This needs to be outside the module to work.
class NoProfanityValidator < ActiveModel::EachValidator
  # implement the method called during validation
  def validate_each(record, attribute, value)
    record.errors[attribute] << 'cannot contain profanity' if JamRuby::Profanity.is_profane?(value)
  end
end