#!/usr/bin/env bash

set -e

# CLI handling.
debug=false
nographic=false
extra_append=''
extra_flags=''
while getopts dn OPT; do
  case "$OPT" in
    d)
      debug=true
      extra_flags="$extra_flags -S -s"
      ;;
    n)
      extra_append="$extra_append console=ttyS0"
      extra_flags="$extra_flags -nographic"
      nographic=true
      ;;
  esac
done

cmd="qemu-system-x86_64 \
  -M pc \
  -append 'root=/dev/vda $extra_append' \
  -drive file=buildroot/output/images/rootfs.ext2,if=virtio,format=raw \
  -kernel buildroot/output/images/bzImage \
  -m 128M \
  -net nic,model=virtio \
  -net user \
  -smp 1 \
  $extra_flags \
;
"

if $debug && ! $nographic; then
  eval nohup "$cmd" &>/dev/null &
  # TODO: Ctrl +C gets sent to QEMU? Why? Does not happen if I run
  # ./rungdb manually from outside this script!!! But why?!?!
  # eval has nothing to do with it, minimized example with explicit
  # commands also fails in the same way...
  #./rungdb
else
  eval "$cmd"
fi