First iteration of DSL to create Freeswitch apps

free_talk.rb

class NoSceneDefinedError < RuntimeError;
end

class Scene

  attr_accessor :function

  def initialize name
    @name = name
    @function = nil
  end

  def menu options = {}, &block
    menu = Menu.new
    @function = menu
    menu.instance_eval(&block)
    puts 'in menu definition'

    menu
  end

  def speak text
    puts "saying: #{text}"
  end

  def execute
    puts "- Executing Scene #@name"
    @function.run
  end
end

class Menu
  attr_accessor :menu, :tries, :text, :options

  def initialize
    @menu = nil
    @tries = 1
    @text = "Default Menu Text"
    @options = {}
  end

  def add_option digit, &block
    @options[digit] = block
  end

  def tries number
    puts "setting tries: #{number}"
    @tries = number
    self
  end

  def option digit, &block

    puts "defining option #{}"
    add_option digit, &block
    self
  end

  def text text
    puts "defining text #{text}"
    @text = text
    self
  end




  def run
    tries = 0
    while tries < @tries do
      puts "* #@text"
      choice = gets.chomp.to_i
      puts "user choose: #{choice}"
      options[choice].call
    end
  end
end

module FreeTalk

  def self.included traitable_class
    puts 'including freeTalk'
    traitable_class.extend ClassMethods
  end

  module ClassMethods

    def scene name, &block
      puts "scene #{name}"
      @scenes ||= {}
      scene = Scene.new(name)
      @current_scene = @scenes[name] = scene
      scene.instance_eval(&block)
      scene
    end

    def scenes
      @scenes
    end

    def locale locale
      @locale = locale
    end



    def play scene
      puts "playing #{scene}"
      # puts @scenes.inspect
      if scenes[scene]
        scenes[scene].execute
      else
        raise NoSceneDefinedError.new scene
      end
    end

  end


end

main_menu_dsl.rb

require_relative 'free_talk'

class MainMenuDsl

  include FreeTalk

  locale :de

  scene "MainMenu" do
    menu do
      tries 3
      text 'Press 1 for this, or 2 for that'
      option 1 do
        play 'pay_merchant'
      end
      option 2..9 do
        play 'not_implemented'
      end
      option '*' do
        play 'help'
      end
    end
  end

  scene 'help' do
    speak 'This is the help text'
  end

  scene "pay_merchant" do
    speak "Pay Merchant"
  end

end

main = MainMenuDsl.play "MainMenu"