Commiting queued derivative assignment after fileset creation

commit_queued_example.rb

module NewspaperWorks
  module Data
    class WorkDerviatives
      #...

      # Given a fileset meeting both of the following conditions:
      #   1. a non-nil import_url value;
      #   2. is attached to a work (persisted in Fedora, if not yet in Solr)...
      # ...this method shall get associated derivative paths queued and attach all.
      def commit_queued!(file_set)
        raise ArgumentError('FileSet has no import_url') if file_set.import_url.nil?
        import_path = file_url_to_path(file_set.import_url)
        work = file_set.member_of.select(&:work?)[0]
        raise ArgumentError('Work not found for fileset') if work.nil?
        derivatives = WorkDerivatives.of(work, file_set)
        IngestFileRelation.derivatives_for_file(import_path).each |path| do
          next unless File.exist?(path)
          attachment_record = DerivativeAttachment.where(path: path).first
          derivatives.attach(path, attachment_record.destination_name)
        end
      end

      private
        
        def file_url_to_path(url)
          url.gsub('file://')
        end
    end
  end
end