report_mailer.rb

  def send_secure_pdf(str, user, title, orientation, password)
    # Pull in output as email attachment
    base = "#{Rails.root}/tmp/#{Time.now.to_i}-#{(rand*50).round}"

    unsecured_file = "#{base}.pdf"
    secured_file = "#{base}_secure.pdf"

    pdf = WickedPdf.new.pdf_from_string(str, orientation: orientation)

    File.open(unsecured_file, 'wb') do |file|
      file << pdf
    end

    pdftk_command = "pdftk #{unsecured_file} output #{secured_file} owner_pw #{password}Yonder user_pw #{password}"

    Open3.popen3(pdftk_command) do |stdin, stdout, stderr|
      # Check for error?
    end

    mail(:subject => "[BalancedComp] #{title}.pdf", :to => user.email) do |format|
      format.html
      format.pdf do
        attachments["#{title}.pdf"] = File.read(secured_file)
      end
    end

    File.delete(unsecured_file)
    File.delete(secured_file)
  end