class Design
  include Mongoid::Document
  include Mongoid::Timestamps


  field :title
  field :author
  field :intro

  field :version

  validates_presence_of :title
  validates_presence_of :author

  has_many :pages

  embeds_one :layout
  mount_uploader :default_css, AssetUploader

  embeds_many :themes
  embeds_many :javascripts
  embeds_many :images

  after_save :procs_embedded_objects
  # after_destroy :del_embedded_objects
 
  def javascripts=(*attrs)
    self.files = (attrs << 'javascripts')
  end
  
  def themes=(*attrs)
    self.files = (attrs << 'themes')
  end
  
  def images=(*attrs)
    self.files = (attrs << 'images')
  end
  
  # Update or create the attribute_model records
  def files=(attrs)
    case attrs.last
    when 'layout'
      files = self.layout.build
    else
      files = eval(attrs.last)
    end
    attrs[0].each do |a|
      if(a[:id]=='' && !a[:file].nil? )
        if(a[:file]!='')
          files.build(:file => a[:file], :to_save => true)
        end
      else
        files.each do |file|
          if file.id.to_s == a[:id]
             file.to_destroy = a[:to_destroy]
          end
        end
      end
    end
  end
  
  protected
  
  def del_embedded_objects
    [[self.layout],self.themes, self.javascripts, self.images].each do |objects|
      objects.each do |object|
        object.destroy
      end
     end
  end
  
  def procs_embedded_objects
    [self.javascripts, self.images].each do |objects|
      objects.each do |object|
        process_object(object)
      end
    end
    if self.layout.to_save
      self.layout.save
      self.layout.parse_urls
    end
    self.themes.each do |theme|
      to_parse_url = theme.to_save ? true : false
      process_object(theme)
      theme.parse_urls if to_parse_url
    end
  end
  
  def process_object(object)
    if object.file.blank?
      object.to_save = false
    end
    if object.to_save
      object.to_save = false
      object.save
    end
    if object.to_destroy
      object.destroy
    end
  end
  
end