#!/bin/bash

# try to boot the ISO in qemu
. config || exit 0

usage() {
    cat <<EOF
usage: $0 [-i iso] <-c | -d>

  -c   Make an empty disk image and boot from CD
  -d   Boot the disk image
  -i   Path to iso
EOF
    exit 0
}

boot=""
iso="${OUTPUT}"

while getopts cdi: flag; do
    case $flag in
        c)
            boot="c$boot"
            ;;
        d)
            boot="d$boot"
            ;;
        i)
            iso="$OPTARG"
            ;;
        ?)
            usage
            ;;
    esac
done

case $boot in
    ?)
        ;;
    *)
        usage
        ;;
esac

set -e
set -x

cfg=""

cfg+=" -nodefaults"
cfg+=" -drive file=${DISK},media=disk,format=raw,if=virtio"
cfg+=" -enable-kvm"
cfg+=" -m 2048"
cfg+=" -usb"
cfg+=" -device usb-tablet"
cfg+=" -nic user"
cfg+=" -vga virtio"
#cfg+=" -vnc :0"

case $boot in
    c)
        echo "booting CD with empty disk"
        rm -f ${DISK}
        dd if=/dev/zero "of=${DISK}" bs=1M count=0 seek=30720
        cfg+=" -drive file=${iso},media=cdrom,if=none,id=cd"
        cfg+=" -device virtio-scsi-pci -device scsi-cd,drive=cd"
        cfg+=" -boot d"
        ;;
    d)
        echo "booting disk with no CD"
        cfg+=" -boot c"
        ;;
esac

qemu-system-x86_64 $cfg