async function unlinkGoogleUserAndCalendars(calendarId) {
  const calendar = await Calendar.findOne({ where: { id: calendarId } });
  const googleUser = await GoogleUser.findOne({
    where: { id: calendar.provider_user_id },
  });
  await googleUser.update({ status: 'UNLINKED' });
  const calendars = await Calendar.findAll({
    where: {
      provider_user_id: googleUser.id,
      provider_user_type: 'google',
    },
  });
  await Promise.all(
    calendars.map(calendar => {
      return calendar.unlinkAndForceDestroyFutureEvents();
    }),
  );
}