#!/bin/sh
## SPDX-FileCopyrightText: 2024 Benjamin Grande M. S. <ben.grande.b@gmail.com>
##
## SPDX-License-Identifier: AGPL-3.0-or-later

set -eu

usage(){
  echo "Usage: ${0##*/} QUBE" >&2
  exit "${1:-1}"
}

get_qube_feat(){
  qube="${1}"
  qvm-features "${qube}" \
    | grep -e os-distribution -e os-version -e template-release \
           -e template-release -e template-name
}

case "${1-}" in
  -h|--?help) usage 0;;
  -*|"") usage 1;;
  *) wanted_qube="${1}";;
esac

mgmt="$(qubes-prefs management_dispvm)"
echo "Global management_dispvm qube: ${mgmt}"
tpl_mgmt="$(qvm-prefs "${mgmt}" template)"
echo "Global management_dispvm template: ${tpl_mgmt}"
echo "Global management_dispvm template features:"
get_qube_feat "${tpl_mgmt}"

if ! qvm-check -q -- "${wanted_qube}"; then
  echo "error: qube '${wanted_qube}' does not exist" >&2
  exit 1
fi
echo "Wanted qube: ${wanted_qube}"
wanted_mgmt="$(qvm-prefs "${wanted_qube}" management_dispvm)"
echo "Global management_dispvm qube: ${wanted_mgmt}"
if test "${wanted_mgmt}" = "${mgmt}"; then
  exit
fi
wanted_tpl_mgmt="$(qvm-prefs "${wanted_mgmt}" template)"
echo "Global management_dispvm template: ${wanted_tpl_mgmt}"
echo "Global management_dispvm template features:"
get_qube_feat "${wanted_tpl_mgmt}"