#!/bin/sh

user=nullmail
group=nullmail

ask() {
    local question default answer

    question=$1
    default=$2
    if [ -z "${PACKAGE_BUILDING}" ]; then
        read -p "${question} [${default}]? " answer
    fi
    if [ x${answer} = x ]; then
        answer=${default}
    fi
    echo ${answer}
}

yesno() {
    local dflt question answer

    question=$1
    dflt=$2
    while :; do
        answer=$(ask "${question}" "${dflt}")
        case "${answer}" in
        [Yy]*)          return 0;;
        [Nn]*)          return 1;;
        esac
        echo "Please answer yes or no."
    done
}

delete_account() {
    local u g home

    u=$1
    g=$2
    if yesno "Do you want me to remove group \"${g}\"" y; then
	pw groupdel -n ${g}
	echo "Done."
    fi
    if yesno "Do you want me to remove user \"${u}\"" y; then
	eval home=~${u}
	pw userdel -n ${u}
	echo "Done."
	if [ -d "${home}" ]; then
	    echo "Please remember to check if there's any unsent mail left"
	    echo "in the home directory \"${home}\""
	fi

    fi
}

if [ x"$2" = xDEINSTALL ]; then
    if [ ! -n "$BATCH" ]; then
	if /bin/ps -axc | /usr/bin/grep -q nullmailer-send; then
	    if yesno "There are some nullmailer processes running.  Shall I kill them" y; then
		${PKG_PREFIX}/etc/rc.d/nullmail.sh stop
		sleep 2
	    else
		echo "OK ... I hope you know what you are doing."
	    fi
	fi

    fi
fi

if [ x"$2" = xPOST-DEINSTALL ]; then
    tmp="/etc/#nullmailer$$"
    if [ ! -n "$BATCH" ]; then
	if yesno "Do you want me to remove the nullmail logging from \"/etc/syslog.conf\"" y; then
	    sed "/nullmail\.log\$/d" /etc/syslog.conf >${tmp} || exit
	    chmod 644 ${tmp}
	    mv ${tmp} /etc/syslog.conf || exit

	    if [ -f /var/run/syslog.pid ]; then
		echo "Giving syslogd a kick in the pants."
		kill -HUP `cat /var/run/syslog.pid`
	    fi
	fi

	if yesno "Do you want me to remove the nullmail log entry from \"/etc/newsyslog.conf\"" y; then
	    sed "/nullmail\.log/d" /etc/newsyslog.conf >${tmp} || exit
	    chmod 644 ${tmp}
	    mv ${tmp} /etc/newsyslog.conf || exit
	    echo "Done."
	fi
	delete_account ${user} ${group}

    fi
fi