#!/bin/sh
##
## SPDX-FileCopyrightText: 2023 - 2024 Benjamin Grande M. S. <ben.grande.b@gmail.com>
##
## SPDX-License-Identifier: AGPL-3.0-or-later
##
## Benefits of this method:
## - faster than salt, no need for a dispvm.
## - preserve permissions, salt-ssh doesn't.
## Disadvantages:
## - files need be copied to dom0 preserving permissions or setting again.
##
## Commands to run:
## sudo ./qvm-copy-dotfiles QUBE
set -eu

test -n "${1:-}" || { printf '%s\n' "usage: ${0##*/} QUBE"; exit 1; }
uid="$(id -u)"
test "${uid}" = "0" || { printf '%s\n' "Program requires root."; exit 1; }

qube="${1-}"
if ! qvm-check -- "${qube}" >/dev/null 2>&1; then
  printf '%s\n' "VM doesn't exist: '${qube}'"
  exit 1
fi
test -f ./setup.sh ||
  { printf '%s\n' "File doesn't exist: './setup.sh'"; exit 1; }

if test "${qube}" = "dom0"; then
  sh ./dotfiles/setup.sh
  user_name="$(getent group qubes | awk -F "[:,]" '{print $4}')"
  user_home="$(getent passwd "${user_name}" | awk -F ":" '{print $6}')"
  sudo -u "${user_name}" mkdir -pv -- "${user_home}/.cache"
  tmpdir="$(sudo -u "${user_name}" -- mktemp -d -- "${user_home}/.cache/XXXXXX")"
  trap 'rm -rf -- "${tmpdir}"' EXIT INT HUP QUIT ABRT
  cp -r -- ./dotfiles "${tmpdir}"
  chown -R -- "${user_name}:${user_name}" "${tmpdir}"
  sudo -u "${user_name}" -- "${tmpdir}/dotfiles/setup.sh"
  exit
fi

qvm-run --no-gui -q -- "${qube}" "rm -rf -- ~/QubesIncoming/dom0/files"
qvm-copy-to-vm "${qube}" ../files
qvm-run --no-gui -q -- "${qube}" "sh -- ~/QubesIncoming/dom0/files/setup.sh"
qvm-run --no-gui -q -- "${qube}" "rm -rf -- ~/QubesIncoming/dom0/files"