# frozen_string_literal: true

module Wayfarer
  module Networking
    Context = Struct.new(:strategy) do
      def fetch(url)
        supervise { strategy.fetch(instance, url) }
      end

      def live
        supervise { strategy.live(instance) }
      end

      def renew
        strategy.destroy(instance)
      ensure
        @instance = nil
      end

      def instance
        @instance ||= strategy.create
      end

    private

      def supervise
        yield
      rescue *strategy.renew_on => e
        renew
      ensure
        # If renewing raises, re-raise the originally caught exception
        # TODO: Not nice this effectively swallows exceptions
        raise e if e
      end
    end
  end
end