#!/bin/bash
# I, Ian Kelling, follow the GNU license recommendations at
# https://www.gnu.org/licenses/license-recommendations.en.html. They
# recommend that small programs, < 300 lines, be licensed under the
# Apache License 2.0. This file contains or is part of one or more small
# programs. If a small program grows beyond 300 lines, I plan to switch
# its license to GPL.

# Copyright 2024 Ian Kelling

# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at

#     http://www.apache.org/licenses/LICENSE-2.0

# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.


[[ $EUID == 0 ]] || exec sudo -E "${BASH_SOURCE[0]}" "$@"

set -e; . /usr/local/lib/bash-bear; set +e


# Explaining this whole thing. The host amy is used by someone else,
# i back it up to my extra big partition on one computer.
# But I also want to restore it and test out the restoration on
# a computer I usually use. For this, I created a separate partition
# that has the amy encryption password, and a separate boot so
# that I could encrypt my own boot partition if I want. Then,
# I backup from this big partition into that partition in order
# to boot and run it.
#
## In order to boot and run it:

set -x

if [[ ! -e /mnt/root/root2-fstab || ! -e /mnt/root/root2-crypttab ]]; then
  echo $0: "error: create /mnt/root/root2-fstab & /mnt/root/root2-crypttab from running /a/bin/fai/fai/config/hooks/partition.DEFAULT mkroot2 or mkroot2tab"
  exit 1
fi

mount -o bind /mnt/root2/root_ubuntubionic /mnt/1
cd /mnt/1
/b/ds/gen-amy-fstab ubuntubionic .
teeu /mnt/1/etc/default/grub <<<'GRUB_DISABLE_OS_PROBER=true'
mount -o bind /mnt/boot2/boot_ubuntubionic boot
mount -o bind /dev dev
mount -o bind /proc proc
mount -o bind /sys sys
mkdir -p boot/efi
mount "$(awk '$2 == "/boot/efi" {print $1}' /etc/mtab)" boot/efi

cp /b/ds/zboot-chroot ./root

chroot . ./root/zboot-chroot

echo "check output and reboot"