#!/bin/sh
set -e

if [ "$1" = "configure" ]; then
    adduser --quiet --system --group --no-create-home --home /var/cache/knot-resolver knot-resolver
fi

# Restart any running kresd instances if the root key is updated.
# Note: if knot-resolver upstream watches this file and reloads it
# upon a change, we can and should remove this trigger.
if [ "$1" = "triggered" ]; then
    if [ "$2" = "/usr/share/dns/root.key" ]; then
        # systemctl of the sub-services is the preferred method to restart
        systemctl try-restart 'kresd@*.service' || true
        # but if we are running sysvinit, we can try to restart that process anyway
        # (kresd.service is masked on systems that use systemd)
        invoke-rc.d kresd try-restart || true
    fi
    exit 0
fi

if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
    if [ -d /run/systemd/system ]; then
        systemctl try-restart 'kresd@*.service' || true
    else
        invoke-rc.d kresd try-restart || true
    fi
fi

#DEBHELPER#