fairmondo/fairmondo

module Assets
  module Normalizer
    def self.included(base)
      base.send :before_save, :normalize_filename
    end

    private

    def normalize_filename
      self.class.attachment_definitions.each do |name, _hash|
        attachment = self.send(name)
        if attachment.present?
          if self.new_record? || self.changed_attributes.keys.include?("#{name}_file_name")
            normalized_file_name = Assets::Filename.normalize(attachment.instance_read(:file_name))
            attachment.instance_write(:file_name, normalized_file_name)
          end
        end
      end
    end
  end
end