okra.rb

### Example
# okra = Okra.enter
# okra.order('poulet', nan: true, pakora: false)
#
# chainable:
# Okra.enter.order('poulet').order('fish', pakora: true)
###

class Okra
  # Raj's sick today Damayanti's here for the rescue
  class Damayanti
    def self.say(str)
      system("say -v Damayanti '#{str}'")
    end
  end

  class Menu
    def self.choose(name, options = {})
      menu_class = Okra.const_get("#{name.capitalize}Menu", false)
      menu_class.new(options)
    end

    def initialize(nan: false, pakora: false)
      @nan = nan
      @pakora = pakora
    end

    def price
      price = base_price
      price += 3 if @nan
      price += 3 if @pakora
      price
    end

    def to_s
      str = name
      str << 'mit nan' if @nan
      str << ' und ' if @nan && @pakora
      str << 'mit pakora' if @pakora
      str
    end

    protected
    def name
      ''
    end

    def base_price
      0
    end
  end

  class DaalMenu < Menu
    def base_price; 10 end

    def name
      'Daal Menu'
    end
  end

  class VegiMenu < Menu
    def base_price; 11 end

    def name
      'Vegi Menu'
    end
  end

  class FishMenu < Menu
    def base_price; 12 end

    def name
      'Fish Menu'
    end
  end

  class PouletMenu < Menu
    def base_price; 13 end

    def name
      'Poulet Menu'
    end
  end

  def self.enter; new end

  def initialize
    @menus = []
  end

  def order(menu, options = {})
    menu = Menu.choose(menu, options)
    @menus << menu
    Damayanti.say(menu)
    Damayanti.say("Das macht #{menu.price} Franken bitte.")
  rescue NameError
    Damayanti.say("#{menu} haben wir nicht.")
  end
end