APT_DATER_GROUP=apt-dater

post_install() {
  getent group $APT_DATER_GROUP >/dev/null 2>&1 || groupadd --system apt-dater

  chown :$APT_DATER_GROUP /etc/apt-dater /etc/apt-dater/ssh

  for d in /var/cache/apt-dater/stats /var/cache/apt-dater/tmux /var/lib/apt-dater/history; do
    chown :$APT_DATER_GROUP "$d"
    chmod 02770 "$d"
  done

  echo "  ==> Group '$APT_DATER_GROUP' created."
  echo "  ==> Add your user to the '$APT_DATER_GROUP' group."
}

post_remove() {
  groupdel $APT_DATER_GROUP || true
  echo "  ==> Group '$APT_DATER_GROUP' removed."
}