#!/bin/bash --
set -eu
print_usage() {
cat >&2 << USAGE
Usage: $0 [--autostart] [--] vmname
Connects to VM console throught DispVM using the qubes.ShowInTerminal RPC service.
With --autostart, start the VM first.
USAGE
}

do_start=false
if [[ $# -ge 2 ]] && [[ "$1" = '--autostart' ]]; then
    do_start=:
    shift
fi
if [[ $# -eq 2 ]] && [[ "$1" = '--' ]]; then
    shift
elif [ $# -ne 1 ]; then
    print_usage
    exit 1
fi

QREXEC_REQUESTED_TARGET="$1"

[[ "$QREXEC_REQUESTED_TARGET" =~ ^[A-Za-z][A-Za-z0-9_-]*$ ]] || { printf 'Invalid qube name %q\n' "$QREXEC_REQUESTED_TARGET">&2; exit 1; }

if "$do_start"; then
    msg='cannot be started'
    qvm-start --skip-if-running -- "$QREXEC_REQUESTED_TARGET"
else
    msg='is not running'
    qvm-check --quiet --running -- "$QREXEC_REQUESTED_TARGET"
fi > /dev/null 2>&1 || { echo "Error: domain '$QREXEC_REQUESTED_TARGET' does not exist or $msg">&2; exit 1; }

DISPVM="$(qvm-prefs -- "$QREXEC_REQUESTED_TARGET" management_dispvm)"

[[ "x$DISPVM" == "x" ]] && { echo "Error: cannot determine management DispVM of domain '$QREXEC_REQUESTED_TARGET'">&2; exit 1; }

sudo qvm-run -p --localcmd="QREXEC_REQUESTED_TARGET=$QREXEC_REQUESTED_TARGET QREXEC_REMOTE_DOMAIN=dom0 /etc/qubes-rpc/admin.vm.Console" --service --dispvm="$DISPVM" -- qubes.ShowInTerminal