module Refinery
  module WordPress
    class Post < Page
      def tags
        node.xpath("category[@domain='post_tag']").collect do |tag_node| 
          Tag.new(tag_node.text)
        end
      end

      def tag_list
        tags.collect(&:name).join(',')
      end

      def categories
        node.xpath("category[@domain='category']").collect do |cat|
          Category.new(cat.text)
        end
      end

      def comments
        node.xpath("wp:comment").collect do |comment_node|
          Comment.new(comment_node)
        end
      end

      def to_refinery
        user = ::User.find_by_username creator
        raise "Referenced User doesn't exist! Make sure the authors are imported first." \
          unless user

        post = BlogPost.new
        

        post = ::BlogPost.create! :title => title, :body => content, :draft => draft?, 
          :published_at => post_date, :created_at => post_date, :author => user,
          :tag_list => tag_list

        ::BlogPost.transaction do
          categories.each do |category|
            post.categories << category.to_refinery
          end
          
          comments.each do |comment|
            comment = comment.to_refinery
            comment.post = post
            comment.save
          end
        end

        post
      end
    end
  end
end