module Nyara
  # other options:
  # - session (see also Session)
  # - host
  # - views
  # - public
  Config = ConfigHash.new
  class << Config
    def reset
      clear
      Route.clear
    end

    def map prefix, controller
      Route.register_controller prefix, controller
    end

    def port n
      n = n.to_i
      assert n >= 0 && n <= 65535
      Config['port'] = n
    end

    def workers n
      n = n.to_i
      assert n > 0 && n < 1000
      Config['workers'] = n
    end

    def env
      self['env'].to_s
    end

    def development?
      e = env
      e.empty? or e == 'development'
    end

    def production?
      env == 'production'
    end

    def test?
      env == 'test'
    end

    alias set []=
    alias get []

    def assert expr
      raise ArgumentError unless expr
    end

    # todo env aware configure
    def configure &blk
      instance_eval &blk
    end
  end
end

def configure *xs, &blk
  Nyara::Config.configure *xs, &blk
end

configure do
  set 'env', 'development'
  set 'views', 'views'
  set 'public', 'public'
end