class Itinerary < ActiveRecord::Base
  belongs_to :package
  has_and_belongs_to_many :experiences

  def add_package(package)
    self.experience_ids += package.experience_ids
    consolidate_experiences
  end

  def remove_package(package)
    self.experience_ids -= package.experience_ids
    consolidate_experiences
  end

  def add_experience(experience)
    self.experiences << experience
    consolidate_experiences
  end

  def remove_experience(experience)
    self.experiences << experience
    consolidate_experiences
  end

  private
  def consolidate_experiences
    # Look at experiences, are they a package, if so flag itinerary as a package
    self.package = (self.experience_ids.sort.uniq == self.experiences.first.package.experience_ids.sort.uniq) ? self.experiences.first.package : nil
  end
end