Noosfero/noosfero

class CommunityTrackPlugin::Track < Folder
  settings_items :goals, type: :string
  settings_items :expected_results, type: :string

  validate :validate_categories

  attr_accessible :goals, :expected_results

  def comments_count
    @comments_count = sum_children_comments self unless @comments_count
    @comments_count
  end

  def validate_categories
    errors.add(:categories, _("should not be blank.")) if categories.empty? && pending_categorizations.blank?
  end

  def self.icon_name(article = nil)
    "community-track"
  end

  def self.short_description
    _("Track")
  end

  def self.description
    _("Defines a track.")
  end

  def steps
    # XXX article default order is name (acts_as_filesystem) -> should use reorder (rails3)
    steps_unsorted.sort_by(&:position).select { |s| !s.hidden }
  end

  def hidden_steps
    steps_unsorted.select { |s| s.hidden }
  end

  def reorder_steps(step_ids)
    transaction do
      step_ids.each_with_index do |step_id, i|
        step = steps_unsorted.find(step_id)
        step.update_attribute(:position, step.position = i + 1)
      end
    end
  end

  def steps_unsorted
    children.where(type: "CommunityTrackPlugin::Step")
  end

  def accept_comments?
    false
  end

  def sum_children_comments(node)
    result = 0
    node.children.each do |c|
      result += c.comments_count
      result += sum_children_comments c
    end
    result
  end

  def css_class_name
    "community-track-plugin-track"
  end

  def first_paragraph
    return "" if body.blank?

    paragraphs = Nokogiri::HTML.fragment(body).css("p")
    paragraphs.empty? ? "" : paragraphs.first.to_html
  end

  def category_name
    category = categories.first
    category = category.top_ancestor unless category.nil?
    category.nil? ? "" : category.name
  end

  def to_html(options = {})
    track = self
    proc do
      render file: "content_viewer/track", locals: { track: track }
    end
  end
end