#!/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
}

if [ x"$2" = xPRE-INSTALL ]; then
    if /usr/sbin/pw groupshow "${group}" 2>/dev/null; then
        echo "You already have a group \"${group}\", so I will use it."
    else
        echo "You need a group \"${group}\"."
        if ([ -n "$BATCH" ] || yesno "Would you like me to create it" y); then
            /usr/sbin/pw groupadd ${group} -g 522 -h - || exit
            echo "Done."
        else
            echo "Please create it, and try again."
            exit 1
        fi
    fi

    if /usr/sbin/pw user show "${user}" 2>/dev/null; then
        echo "You already have a user \"${user}\", so I will use it."
	pw usermod "${user}" -d /var/spool/nullmailer
    else
        echo "You need a user \"${user}\"."
        if ([ -n "$BATCH" ] || yesno "Would you like me to create it" y); then
            /usr/sbin/pw useradd ${user} -u 522 -g ${group} -h - -d /var/spool/nullmailer \
                -s /bin/sh -c "Nullmailer Mail System" || exit
            echo "Done."
        else
            echo "Please create it, and try again."
            exit 1
        fi
    fi

    if [ ! -n "$BATCH" ]; then
	if grep -q "^[^#]*local5.*/var/log/nullmail.log" /etc/syslog.conf; then
	    echo -n "It looks like you already have some logging set up, so I "
	    echo "will use it."
	elif yesno "Would you like me to set up the syslog logging" y; then
	    echo "Setting up nullmailer logging in \"/etc/syslog.conf\"."
	    cat <<EOF | ex -s
e /etc/syslog.conf
/\*\.\*/
-1
insert
local5.info					/var/log/nullmail.log
.
wq
EOF

	    if [ ! -f /var/log/nullmail.log ]; then
		echo "Creating \"/var/log/nullmail.log\"."
		cp /dev/null /var/log/nullmail.log
	    fi

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

	    echo "Adding nullmail log entry to \"/etc/newsyslog.conf\"."
	    cat <<EOF >>/etc/newsyslog.conf
/var/log/nullmail.log			644  7     *    @T00  Z
EOF
	    echo "Done."
	fi
    fi

fi

if [ x"$2" = xPOST-INSTALL ]; then
    if [ ! -f ${PKG_PREFIX}/etc/nullmailer/me.sample ]; then
	echo "Creating \"${PKG_PREFIX}/etc/nullmailer/me.sample\"."
	echo `/bin/hostname` > ${PKG_PREFIX}/etc/nullmailer/me.sample
    fi
fi