class StoryMediator
  attr_reader :stories
  
  def initialize
    @stories = []
  end
  
  def create_story(title, narrative)
    @stories << Story.new(:title => title, :narrative => narrative)
  end
  
  def create_scenario(title)
    current_story.scenarios << Scenario.new(:title => title)
  end
  
  def create_given(name)
    current_scenario.steps << Step.new(:kind => 'Given', :name => name)
  end
  
  def create_given_scenario(name)
    current_scenario.steps << Step.new(:kind => 'GivenScenario', :name => name)
  end
  
  def create_when(name)
    current_scenario.steps << Step.new(:kind => 'When', :name => name)
  end
  
  def create_then(name)
    current_scenario.steps << Step.new(:kind => 'Then', :name => name)
  end
  
private

  def current_story
    @stories.last
  end
  
  def current_scenario
    current_story.scenarios.last
  end
end