#!/bin/sh
# 2021-07-09
# Objective: install any Linux automatically to a disk
# Made by ungleich
# Made for bare metal
# Requirements:
# The OS image needs to be in tar format and needs to contain grub

set -e

if [ $# -lt 2 ]; then
    echo "$0 os-image.tar [usb|disk] [target-usb-disk]"
    echo "os-image.tar contains the OS"
    echo "usb mode: create a bootable usb stick including this script to auto install to disk"
    echo "disk mode: actually install os-image.tar to the first disk"
    echo ""
    echo "In usb mode, specify the usb disk to install to"
    exit 1
fi

IMAGE=$1; shift
mode=$1; shift

# isohybrid

setup_usb() {
    rootfs_tmpdir=$(mktemp -d)

    sudo sfdisk "$DISK" <<EOF
label: dos
,,L
EOF

    sudo mkfs.ext4 -F ${DISK}1
    sudo mount ${DISK}1 $rootfs_tmpdir
    sudo tar xf $IMAGE -C $rootfs_tmpdir

    for dir in dev proc sys; do
        sudo mount --bind /${dir} ${rootfs_tmpdir}/${dir}
    done

    ...

}

setup_disk()
{



}

case "$mode" in
    usb)
        if [ $# -ne 1 ]; then echo "Specify usb disk to install to"; exit 1; fi
        DISK=$1; shift