class Renee
  class Core
    class Application
      # This module deals with the Rack#call compilance. It defines #call and also defines several critical methods
      # used by interaction by other application modules.
      module RequestContext
        attr_reader :env, :request, :detected_extension, :is_index_request
        alias_method :is_index_request?, :is_index_request

        # Provides a rack interface compliant call method.
        # @param[Hash] env The rack environment.
        def call(env)
          @env, @request = env, Rack::Request.new(env)
          @detected_extension = env['PATH_INFO'][/\.([^\.\/]+)$/, 1]
          @is_index_request = env['PATH_INFO'][/^\/?$/]
          # TODO clear template cache in development? `template_cache.clear`
          catch(:halt) do
            begin
              instance_eval(&application_block)
            rescue ClientError => e
              e.response ? instance_eval(&e.response) : halt("There was an error with your request", 400)
            end
            Renee::Core::Response.new("Not found", 404).finish
          end
        end # call
      end
    end
  end
end