class ArticleDrop < BaseDrop
  include Mephisto::Liquid::UrlMethods
  
  timezone_dates :published_at, :updated_at
  liquid_attributes << :title << :permalink << :comments_count
  
  def initialize(source, options = {})
    super source
    @options  = options
    @liquid.update \
      'body'            => @source.body_html,
      'excerpt'         => (@source.excerpt_html.blank? ? nil : @source.excerpt_html),
      'accept_comments' => @source.accept_comments?,
      'is_page_home'    => (options[:page] == true)
  end
  
  def author
    @author ||= liquify(@source.user).first
  end
 
  def comments
    @comments ||= liquify(*@source.comments) # .reject(&:new_record?) <-- show new comments as they're built as a preview
  end
  
  def sections
    @sections ||= liquify(*@source.sections.reject(&:home?))
  end
 
  def tags
    @tags ||= liquify(*@source.tags)
  end
 
  def blog_sections
    sections.select { |s| s.source.blog? }
  end
  
  def page_sections
    sections.select { |s| s.source.paged? }
  end
  
  def content
    @content ||= body_for_mode(@options[:mode] || :list)
  end
 
  def url
    @url ||= absolute_url(@site.permalink_for(@source)[1..-1])
  end
 
  def comments_feed_url
    @comments_feed_url ||= url + '/comments.xml'
  end
 
  def changes_feed_url
    @changes_feed_url ||= url + '/changes.xml'
  end
  
  def assets
    @assets ||= liquify(*@source.assets)
  end
 
  protected
    def body_for_mode(mode)
      contents = [before_method(:excerpt), before_method(:body)]
      contents.reverse! if mode == :single
      contents.detect { |content| !content.blank? }.to_s.strip
    end
end