#!/bin/bash
set -e

trap "echo TRAPed signal" HUP INT QUIT KILL TERM

echo "user:${VNCPASS}" | sudo chpasswd

# NVIDIA driver version inside the container from Dockerfile must be equal to the host
HEX_ID=$(sudo nvidia-smi --query-gpu=pci.bus_id --id=$(echo $NVIDIA_VISIBLE_DEVICES | cut -d ',' -f1) --format=csv | sed -n 2p)
IFS=":." ARR_ID=($HEX_ID)
unset IFS
BUS_ID=PCI:$((16#${ARR_ID[1]})):$((16#${ARR_ID[2]})):$((16#${ARR_ID[3]}))
# Leave out --use-display-device=None if GPU is headless such as Tesla and download links of such GPU drivers in Dockerfile should also be changed
sudo nvidia-xconfig --virtual=${SIZEW}x${SIZEH} --allow-empty-initial-configuration --enable-all-gpus --no-use-edid-dpi --busid=$BUS_ID --use-display-device=None

if [ "x${SHARED}" == "xTRUE" ]
then
    export SHARESTRING="-shared"
fi

shopt -s extglob
for TTY in /dev/tty+([0-9])
do
if [ -w $TTY ]
then
    /usr/bin/X tty$(echo $TTY | grep -Eo '[0-9]+$') :0 &
    break
fi
done
sleep 1

x11vnc -display :0 -passwd $VNCPASS -forever -xkb -rfbport 5900 $SHARESTRING &
sleep 1

/opt/noVNC/utils/launch.sh --vnc localhost:5900 --listen 5901 &
sleep 1

export DISPLAY=:0
mate-session &
sleep 1

pulseaudio --start

echo "Session Running. Press [Return] to exit."
read