module Gitlab
  module Email
    class HTMLParser
      def self.parse_reply(raw_body)
        new(raw_body).filtered_text
      end

      attr_reader :raw_body
      def initialize(raw_body)
        @raw_body = raw_body
      end

      def document
        @document ||= Nokogiri::HTML(raw_body)
      end

      def filter_replies!
        document.xpath('//blockquote').each { |n| n.replace('> ') }
        document.xpath('//table').each { |n| n.remove }
      end

      def filtered_html
        @filtered_html ||= (filter_replies!; document.inner_html)
      end

      def filtered_text
        @filtered_text ||= Html2Text.convert(filtered_html)
      end
    end
  end
end