module Gluttonberg
  module Content
    $:.unshift(File.dirname(__FILE__)) unless $:.include?(File.dirname(__FILE__)) || $:.include?(File.expand_path(File.dirname(__FILE__)))
    require 'despamilator/filter'
    Dir.glob(File.join(File.dirname(__FILE__), 'despamilator', 'filter', '*.rb')).each do |filter_file|
      require filter_file
    end

    require 'despamilator/subject'
    require 'ostruct'

    #== SYNOPSIS:
    #
    #  require 'despamilator'
    #
    #  # some time later...
    #
    #  dspam = Despamilator.new('some text with an <h2> tag qthhg')
    #
    #  dspam.score #=> the total score for this string (1 is normally my threshold).
    #  dspam.matches #=> array of hashes containing matching filters and their score.

    class Despamilator

      # Constructor. Takes the text you which to parse and score.

      def initialize text
        @subject = Despamilator::Subject.new text
        run_filters @subject
      end

      # Returns the total score as a Float.

      def score
        @subject.score
      end

      def matched_by
        warn 'Despamilator.matched_by is deprecated, please use Despamilator.matches by 2011-12-31.'

        matches.map do |match|
          filter = match[:filter]

          OpenStruct.new(
              :name => filter.name,
              :description => filter.description,
              :score => match[:score]
          )
        end
      end

      # Returns an array of scores and filters that have matched and contributed to the score.
      # Each element is a a child of the Despamilator::FilterBase class.

      def matches
        @subject.matches
      end

      # Generic Test for Unsolicited Bulk Submissions. Similar to SpamAssassin's GTUBE.
      # A string that will result in a spam score of at least 100. Handy for testing.

      def self.gtubs_test_string
        '89913b8a065b7092721fe995877e097681683af9d3ab767146d5d6fd050fc0bda7ab99f4232d94a1'
      end

      private

      def run_filters subject
        filter_namespace = Gluttonberg::Content.const_get('DespamilatorFilter')

        filter_namespace.constants.each do |filter_class|
          filter = filter_namespace.const_get(filter_class).new
          filter.parse(subject)
        end
      end

    end
  end #content
end # Gluttonberg