#!/bin/bash
# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
# ex: ts=8 sw=4 sts=4 et filetype=sh

COMMAND="$1"
KERNEL_VERSION="$2"
BOOT_DIR_ABS="$3"
KERNEL_IMAGE="$4"

if [[ -f /etc/machine-id ]]; then
    read MACHINE_ID < /etc/machine-id
fi

if ! [[ $MACHINE_ID ]]; then
    exit 1
fi

BOOT_DIR="/$MACHINE_ID/$KERNEL_VERSION"
BOOT_ROOT=${BOOT_DIR_ABS%$BOOT_DIR}
MENU="$BOOT_ROOT/loader/${MACHINE_ID}.cfg"

{
    declare -a paths
    len=0
    for path in "$BOOT_ROOT/loader/entries/$MACHINE_ID"-*; do
        paths[$((len++))]="$path"
    done

    i=0
    while [[ $len -gt 0 ]]; do
        path="${paths[$((--len))]}"
        echo "LABEL $((++i))"
        echo "INCLUDE ${path#$BOOT_ROOT}"
    done
} > "$MENU" || {
    echo "Could not create aggregated menu '$MENU'." >&2
    exit 1
}

exit 0