update.rake

namespace :update do
  desc "Upload all Paperclip attachments to S3"
  task s3: [:environment] do
    models = {
      documents: [Document, :file],
      ms_ms_peak_assignments: [MsMsPeakAssignment, :assignment_view],
      sops: [Sop, :file]
    }
    models.each do |name, (klass, attachment_method)|
      Dir.glob("public/system/#{name}/#{attachment_method.to_s.pluralize}/**/*").reject { |f| File.directory?(f) }.each do |path|
        attachment = File.open path
        id = File.expand_path(attachment).match(/([\d\/]+)\/original\/.+$/)[1].remove("/").to_i

        puts "Re-saving #{klass} ##{id}..."
        record = klass.find_by(id: id)
        if record.nil?
          puts "\tCan't find record"
          next
        end

        # Paperclip will re-save the attachment using the new settings
        record.send("#{attachment_method}=", attachment)
        record.save!
      end
    end
  end
end