pre_install() {
    # Add group
    if ! getent group bareos >/dev/null; then
        groupadd -r -f bareos
    fi

    # Add user
    if ! getent passwd bareos >/dev/null; then
        useradd -r -c 'Bareos User' -g bareos -G storage -d '/var/lib/bareos' -s /bin/bash bareos
        passwd -l bareos >/dev/null
    fi
}

post_install() {
    # Make bareos user owner of working directory
    if [ -d '/var/lib/bareos' ]; then
        chown -R bareos:bareos '/var/lib/bareos'
    fi
}

pre_upgrade() {
    # Stop services
    _services="bareos-dir bareos-sd bareos-fd"
    for s in $_services; do
        systemctl stop "$s.service" || true
    done
}

post_upgrade() {
    post_install
	echo ""
    echo "Attention:"
    echo "Bareos services have been stopped before the upgrade."
	echo "You may need to run as user postgres"
	echo "  /usr/lib/bareos/scripts/update_bareos_tables and"
	echo "  /usr/lib/bareos/scripts/grant_bareos_privileges"
    echo "to update your database schema."
	echo "Then please manually start all services again."
	echo ""

	systemctl daemon-reload
	_services="bareos-sd bareos-fd bareos-dir"
	for s in $_services; do
		systemctl reset-failed "$s.service" 2>/dev/null || true
		systemctl is-enabled $s >/dev/null && \
			systemctl start "$s.service"
	done
}

pre_remove() {
    # Stop services
    _services="bareos-dir bareos-sd bareos-fd"
    for s in $_services; do
        systemctl stop $s || true
        systemctl disable $s || true
    done

    # Remove working directory
    rm -rf /var/lib/bareos || true

    # Remove user and group
    usermod -G "" bareos || true
    userdel bareos || true
}

post_remove() {
    echo "Note: You need to delete any SQL databases manually."
}