#! /bin/sh

delete_account() {
  local u g home

  u=$1
  g=$2
  echo -n "Removing group \"${g}\"... "
  pw groupdel -n ${g}
  echo "done."
  echo -n "Removing user \"${u}\"... "
  eval home=~${u}
  echo 'y' | pw userdel -n ${u}
  echo "done."
}

zero_crontab() {
  local u

  u=$1
  
  echo -n 'Zeroing crontab(5) file belonging to user "mailman"... '
  crontab -u ${u} /dev/null || exit
  echo 'done.'
  echo '(The crontab(5) will be deleted completely when user "mailman" is removed.)'
}

export PATH=/bin:/usr/bin:/usr/sbin

case $2 in
DEINSTALL)
  zero_crontab mailman
  if ps -axwU mailman | grep -q python; then
    echo 'Killing all running processes belonging to user "mailman".'
    killall -u mailman /usr/local/bin/python
    sleep 2
  fi
  ;;

POST-DEINSTALL)
  if [ -d /usr/local/mailman ]; then
    echo '/usr/local/mailman is not empty - this installation may have active lists!'
    echo '- The "mailman" user and "mailman" group were therefore not deleted.'
    echo '- You may delete them with "pw groupdel mailman; pw userdel mailman".'
  else
    delete_account mailman mailman
  fi
  ;;
esac
