#!/bin/bash

[[ $EUID == 0 ]] || exec sudo -E "$script" "$@"

if ! test "$BASH_VERSION"; then echo "error: shell is not bash" >&2; exit 1; fi
shopt -s inherit_errexit 2>/dev/null ||: # ignore fail in bash < 4.4
set -eE -o pipefail
trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" exit status: $?, PIPESTATUS: ${PIPESTATUS[*]}" >&2' ERR

set -x

apt install grub-efi

# this is taken from partition.DEFAULT
ssds=()
for disk in $(lsblk -do name,tran -n | awk '$2 ~ "^(sata|nvme)$" { print $1 }'); do
  case $(cat /sys/block/$disk/queue/rotational) in
    0) ssds+=(/dev/$disk) ;;
    1) : ;; # hdd
    *) echo "$0: error: unknown /sys/block/$disk/queue/rotational: \
$(cat $disk/queue/rotational)" ;;
  esac
done

# this is from /a/bin/fai/fai/config/scripts/GRUB_EFI/10-setup
GROOT=$(grub-probe -tdrive -d ${ssds[@]})
echo "GROOT=$GROOT"
grub-install --no-floppy --modules=part_gpt "$GROOT"
update-grub
update-initramfs -u