post_install() {
  if ! getent group minetest &>/dev/null; then
    groupadd --system minetest >/dev/null
  fi
  if ! getent passwd minetest &>/dev/null; then
    useradd --system -g minetest -s /bin/nologin -d /var/lib/minetest minetest >/dev/null
  fi

  if [[ ! -d var/lib/minetest ]]; then
    mkdir -p var/lib/minetest
  fi
  chown minetest:minetest var/lib/minetest

  minetest_shell=$(getent passwd minetest | cut -d: -f7)
  if [ "$minetest_shell" != '/bin/nologin' ]; then
    chsh -s /bin/nologin minetest &>/dev/null
  fi
}

post_upgrade() {
  post_install
}

post_remove() {
  echo "-- You may want to remove /var/lib/minetest"

  if getent passwd minetest &>/dev/null; then
    userdel minetest >/dev/null
  fi
  if getent group minetest &>/dev/null; then
    groupdel minetest >/dev/null
  fi
}
