module Technoweenie # :nodoc:
  module AttachmentFu # :nodoc:
		module InstanceMethods
			attr_writer :skip_thumbnail_processing
		
			# Added by WBH from http://groups.google.com/group/rubyonrails-talk/browse_thread/thread/e55260596398bdb6/4f75166df026672b?lnk=gst&q=attachment_fu+copy&rnum=3#4f75166df026672b
			# This is intended to let us make copies of attachment_fu objects
			# Note:  This makes copies of the main image AND each of its prescribed thumbnails
			def create_clone
				c = self.clone
				
				self.thumbnails.each { |t|
					n = t.clone
					img = t.create_temp_file
					n.temp_path = img 	#img.path		-- Commented so that img wo'nt get garbage collected before c is saved, see the thread, above.
					n.save_to_storage
					c.thumbnails<<n
				}
				
				img = self.create_temp_file
				
				# We'll skip processing (resizing, etc.) the thumbnails, unless the thumbnails array was empty.  If the array is empty,
				# it's possible that the thumbnails for the main image might have been deleted or otherwise messed up, so we want to regenerate
				# them from the main image
				c.skip_thumbnail_processing = !self.thumbnails.empty? 
				c.temp_path = img		#img.path
				c.save_to_storage
				
				c.save
				return c
			end 
			
			protected
			
			# Cleans up after processing.  Thumbnails are created, the attachment is stored to the backend, and the temp_paths are cleared.
      def after_process_attachment
        if @saved_attachment
          if respond_to?(:process_attachment_with_processing) && thumbnailable? && !@skip_thumbnail_processing && !attachment_options[:thumbnails].blank? && parent_id.nil?
            temp_file = temp_path || create_temp_file
            attachment_options[:thumbnails].each { |suffix, size| create_or_update_thumbnail(temp_file, suffix, *size) }
          end
          save_to_storage
          @temp_paths.clear
          @saved_attachment = nil
          callback :after_attachment_saved
        end
      end

		end
	end
end