class Embork::Forwarder
  def self.target
    @target
  end

  def self.target=(target)
    @target = target
  end

  attr_reader :app
  def initialize(app, options = {})
    @app = app
  end

  def call(env)
    status, headers, body = @app.call(env)
    if status == 404
      self.class.target.new(@app).call(env)
    else
      [ status, headers, body ]
    end
  end
end