class Event < Sequel::Model
  many_to_one :site
  one_to_one  :follow
  one_to_one  :tip
  one_to_one  :tag
  one_to_one  :site_change
  many_to_one :profile_comment
  one_to_many :likes
  one_to_many :comments

  def liking_site_names
    likes.collect {|like| like.actioning_site.username }
  end

  def add_site_comment(site, message)
    add_comment actioning_site_id: site.id, message: message
  end

  def site_likes?(site)
    likes_dataset.filter(actioning_site_id: site.id).count > 0
  end

  def site_like(site)
    add_like actioning_site_id: site.id
  end

  def site_unlike(site)
    likes_dataset.filter(actioning_site_id: site.id).delete
  end

  def toggle_site_like(site)
    if site_likes? site
      site_unlike site
      false
    else
      site_like site
      true
    end
  end
end