Function performUpdateWithRestart

cmd/dash.go:3022–3060

performUpdateWithRestart performs the update and handles the restart

(status *UpdateStatus, sendProgress func(string))

// performUpdateWithRestart performs the update and handles the restart
func performUpdateWithRestart(status *UpdateStatus, sendProgress func(string)) error {
	sendProgress("Downloading new version...")

	// Perform the update (download and replace executable)
	if err := performUpdate(status); err != nil {
		return fmt.Errorf("failed to download update: %v", err)
	}

	sendProgress("Update downloaded successfully. Restarting server...")

	// Give the UI a moment to receive the message
	time.Sleep(1 * time.Second)

	// Check if we're running under systemd
	if isRunningUnderSystemd() {
		sendProgress("Detected systemd service, requesting service restart...")

		// When running under systemd, we should let systemd handle the restart
		// Signal systemd to restart the service
		if err := requestSystemdRestart(); err != nil {
			// If systemd restart fails, fall back to manual restart
			log(fmt.Sprintf("Failed to request systemd restart, falling back to manual restart: %v", err))
			return performManualRestart(sendProgress)
		}

		sendProgress("Update complete! Service restarting via systemd...")

		// Give a brief moment for the response to be sent, then exit gracefully
		go func() {
			time.Sleep(500 * time.Millisecond)
			os.Exit(0)
		}()

		return nil
	}

	// For non-systemd environments, use manual restart
	return performManualRestart(sendProgress)
}

// isRunningUnderSystemd checks if the current process is running under systemd
func isRunningUnderSystemd() bool {