module Cas
  module Client
    class Response
      def initialize(uri)
        @request_uri = uri
        @response = nil
      end

      def validate_service_response
        @response = Net::HTTP.get(@request_uri)
      end

      def success?
        @response.to_s.match(/<#{xml_namespace}:authenticationSuccess>/)
      end

      def all_attributes
        get_user.merge!(get_extra_attributes)
      end

      protected

      def xml_namespace
        Cas::Client.configuration.cas_namespace
      end

      def get_user
        match = @response.match(/<#{xml_namespace}:user>(.*)<\/#{xml_namespace}:user>/)
        if match
          { user: match.captures.first }
        else # Failed login
          {}
        end
      end

      def get_extra_attributes
        {}.tap do |attributes|
          Cas::Client.configuration.extra_attributes.each do |ea|
            match = @response.match(/<#{xml_namespace}:#{ea}>(.*)<\/#{xml_namespace}:#{ea}>/)

            if match
              attributes[ea] = match.captures.first
            else
              attributes
            end
          end
        end
      end
    end
  end
end