#!/bin/sh
# shebang is for editor file mode detection only

function save_vars {
    if [ -s $envfile ]; then
        for var in $@; do
            save_env --file $envfile $var
        done
    fi
}

function save_chosen {
    save_vars did_fai_check last_boot
}

# fai_check is so we can act like a pxe boot, but just for fai, and by
# using /stretch_bootstrap to do it.  We toggle on and off the grub var
# did_fai_check so we can do the check every other boot. Then
# /debian_bootstrap checks for that var on boot and if we want to do a
# fai check, it does it, then reboots. But fai-check also sets
# did_fai_check to a 3rd state os_true which means we did the fai check,
# and we don't want to do it again. This is useful for systems without
# libreboot, although it's not used yet.

# We don't set this to fai check so we can't get into
# an infinite reboot cycle. We depend on the os to
# create the initial grubenv file.
set default=/debianstretch_bootstrap # could use 0 here.
set timeout=1

for part in (ahci*4) (ata*4); do
    envfile=$part/grubenv
    if [ -s $envfile ]; then
        load_env --file $envfile
        if [ x$did_fai_check == xfalse -a x$last_boot != x$default ]; then
            set default=fai-check
        elif [ ! -z $last_boot ]; then
            set default=$last_boot
        fi
        break
    fi
done

did_fai_check=false

bs_dir=/debianstretch_bootstrap
menuentry $bs_dir --id=$bs_dir {
    # note, we might be able to use $chosen and avoid setting this here,
    # and set it inside save_chosen. but I haven't tested it,
    # it's just one less line of repitition.
    last_boot=$1
    save_chosen
    configfile $bs_dir/boot/grub/grub.cfg
}

for dir in  /boot_*; do
    if [ $dir == '/boot_*' ]; then
        break
    fi
    menuentry $dir --id=$dir {
        last_boot=$1
        save_chosen
        configfile $1/grub/grub.cfg
    }
done

menuentry fai-check --id=fai-check {
    did_fai_check=true
    save_vars did_fai_check
    configfile $bs_dir/boot/grub/grub.cfg
}