#!/bin/sh

set -e

# summary of how this script can be called:
#
#   * <postrm> `remove'
#   * <postrm> `purge'
#   * <old-postrm> `upgrade' <new-version>
#   * <disappearer's-postrm> `disappear' <overwriter> <overwriter-version>
#   * <new-postrm> `failed-upgrade' <old-version> <new-version>
#   * <new-postrm> `abort-install'
#   * <new-postrm> `abort-install' <old-version> <new-version>
#   * <new-postrm> `abort-upgrade' <old-version> <new-version>
#
# for details, see https://www.debian.org/doc/debian-policy/ or
# the debian-policy package

delete_protective_diversion() {
    local usrfile="$1"
    local firstver="$2"

    if [ "$3" != "--" ]; then
        echo "delete_protective_diversion called with the wrong number of arguments" >&2
        return 1
    fi
    for _ in $(seq 1 3); do
        shift
    done

    # If the diversion doesn't exist there's nothing to clean up
    if [ -z "$(dpkg-divert --list "$usrfile")" ]; then
        return 0
    fi

    dpkg-divert \
        --no-rename \
        --divert "$usrfile.usr-is-merged" \
        --remove "$usrfile"
}

DAEMON_COMMON_UNITS="
    libvirt-guests.service
    virt-guest-shutdown.target
"

case "$1" in
    purge)
        if getent group libvirt >/dev/null; then
            delgroup libvirt >/dev/null || true
        fi

        # Clean up logs
        rm -rf /var/log/libvirt
    ;;

    failed-upgrade|abort-install|abort-upgrade)
        for unit in $DAEMON_COMMON_UNITS; do
            delete_protective_diversion \
                "/lib/systemd/system/$unit" \
                "10.6.0-3~" \
                -- \
                "$@"
        done
    ;;

    remove|upgrade|disappear)
    ;;

    *)
        echo "postrm called with unknown argument \`$1'" >&2
        exit 1
    ;;
esac

# Automatically added by dh_installinit/13.24.2
if [ "$1" = "remove" ] && [ -x "/etc/init.d/libvirt-guests" ] ; then
	chmod -x "/etc/init.d/libvirt-guests" >/dev/null || true
fi
if [ -z "$DPKG_ROOT" ] && [ "$1" = "purge" ] ; then
	update-rc.d libvirt-guests remove >/dev/null
fi
# End automatically added section
# Automatically added by dh_installsystemd/13.24.2
if [ "$1" = remove ] && [ -d /run/systemd/system ] ; then
	systemctl --system daemon-reload >/dev/null || true
fi
# End automatically added section
# Automatically added by dh_installsystemd/13.24.2
if [ "$1" = "purge" ]; then
	if [ -x "/usr/bin/deb-systemd-helper" ]; then
		deb-systemd-helper purge 'libvirt-guests.service' >/dev/null || true
	fi
fi
# End automatically added section
# Automatically added by dh_apparmor/4.1.0-1
if [ "$1" = "purge" ] && ! [ -e "/etc/apparmor.d/usr.lib.libvirt.virt-aa-helper" ] ; then
    rm -f "/etc/apparmor.d/disable/usr.lib.libvirt.virt-aa-helper" || true
    rm -f "/etc/apparmor.d/force-complain/usr.lib.libvirt.virt-aa-helper" || true
    rm -f "/etc/apparmor.d/local/usr.lib.libvirt.virt-aa-helper" || true
    rm -f /var/cache/apparmor/*/"usr.lib.libvirt.virt-aa-helper" || true
    rmdir /etc/apparmor.d/disable 2>/dev/null || true
    rmdir /etc/apparmor.d/local   2>/dev/null || true
    rmdir /etc/apparmor.d         2>/dev/null || true
fi
# End automatically added section


exit 0