namespace "storage" do
  task :upgrade_avatars => :environment do
    User.active.where.not(:image_file_name => nil).in_batches.each_record do |user|
      unless user.avatar.attached?
        io = File.open(user.image.path)
        filename = user.image.original_filename
        content_type = if user.image.content_type.nil?
                         MimeMagic.by_magic(io)&.type
                       else
                         user.image.content_type
                       end

        user.avatar.attach(:io => io, :filename => filename, :content_type => content_type)
      end
    end
  end
end