#!/bin/bash
source /etc/holoiso-release
if [[ $EUID -ne 0 ]];
then
    exec pkexec --disable-internal-agent "$0" "$@"
fi

EFI_LOCATION=$(realpath /dev/disk/by-label/holo_efi)

EFI_STORAGE="/dev/$(lsblk -no pkname ${EFI_LOCATION} | tr -d '[:space:]')"
echo ${EFI_LOCATION} | grep -q -P "^/dev/(nvme|loop|mmcblk)"
if [ $? -eq 0 ]; then
    EFI_PARTNUM=$(echo ${EFI_LOCATION} | cut -d "p" -f 2)
else
    EFI_PARTNUM=$(echo ${EFI_LOCATION} | rev | cut -c 1 | rev)
fi

echo "Removing previous HoloISO boot entries"
for entry in $(efibootmgr | grep -e steamos -e HoloISO | awk '{gsub(/Boot|[*0]/,""); print $1}')
do
    efibootmgr -b $entry -B 1>/dev/null
done

mount -L holo_efi /boot/efi
echo "Removing previous HoloISO EFI installations"
rm -rf /boot/efi/*
grub-install --target=x86_64-efi --efi-directory=/boot/efi
grub-mkconfig -o /boot/grub/grub.cfg 
echo "Installing grub entry on ${EFI_STORAGE}, partition number ${EFI_PARTNUM}"
CENTRY=$(find /boot/efi/ | sed 's/\/boot\/efi//g' | sed 's|/|\\|g' | tail -n1)
efibootmgr -c -d ${EFI_STORAGE} -p ${EFI_PARTNUM} -L "HoloISO $OS_TAG (GRUB)" -l "${CENTRY}" 1>/dev/null
umount -l /boot/efi