widgets.rb

require "observer"

module Widgets
  def self.setup app
    app.settings[:widgets] = []
  end

  def widgets list = false
    event = Events.new

    Base.new(res, req, settings, event)

    # settings[:widgets].each do |widget|
    #   "Widgets::#{widget}".constantize.new(res, req, settings, event)
    # end

    event.trigger :test

    true
  end

  module ClassMethods
    def has_widgets *list
      list.each do |widget|
        settings[:widgets] << widget
      end
    end
  end

  class Events
    include Observable

    def trigger event
      ap "trigger: #{event}"
      notify_observers Time.now, event
    end
  end

  class Notify < Struct.new(:res, :req, :settings, :event)
    def initialize res, req, settings, event
      @res, @req, @settings, @event = res, req, settings, event

      event.add_observer self, :trigger_event
    end
  end

  class Base < Notify
    def trigger_event event
      ap '======================='
      ap "#{event} triggered!!!!!"
      ap '======================='
    end

    class << self
      # attr_accessor :events

      def respond_to moo, options = {}
        # @events ||= []
        # @events << [event, options]
      end
    end
  end
end