require 'feedjira'

module Parliament
  module OpenSearch
    module Builder
      # OpenSearch response builder using Feedjira to parse the response.
      #
      # @since 0.1.0
      class OpenSearchResponseBuilder < Parliament::Builder::BaseResponseBuilder
        OPEN_SEARCH_ELEMENTS = %w(totalResults Query startIndex itemsPerPage).freeze

        # Builds a Feedjira::Feed response.  It adds the extra OpenSearch feed elements, then parses the HTTP Response.
        def build
          OPEN_SEARCH_ELEMENTS.each do |element|
            Feedjira::Feed.add_common_feed_element(element)
          end

          Feedjira::Feed.parse(@response.body)
        end
      end
    end
  end
end