#!/bin/bash

# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at https://mozilla.org/MPL/2.0/.

set -e

# Set password for basic authentication
if [ "${SELKIES_ENABLE_BASIC_AUTH,,}" = "true" ] && [ -z "${SELKIES_BASIC_AUTH_PASSWORD}" ]; then export SELKIES_BASIC_AUTH_PASSWORD="${PASSWD}"; fi

# Set default display
export DISPLAY="${DISPLAY:-:0}"
# PipeWire-Pulse server socket path
export PIPEWIRE_LATENCY="32/48000"
export XDG_RUNTIME_DIR="${XDG_RUNTIME_DIR:-/tmp}"
export PIPEWIRE_RUNTIME_DIR="${PIPEWIRE_RUNTIME_DIR:-${XDG_RUNTIME_DIR:-/tmp}}"
export PULSE_RUNTIME_PATH="${PULSE_RUNTIME_PATH:-${XDG_RUNTIME_DIR:-/tmp}/pulse}"
export PULSE_SERVER="${PULSE_SERVER:-unix:${PULSE_RUNTIME_PATH:-${XDG_RUNTIME_DIR:-/tmp}/pulse}/native}"

# Export environment variables required for Selkies-GStreamer
export GST_DEBUG="${GST_DEBUG:-*:2}"
export GSTREAMER_PATH=/opt/gstreamer

# Source environment for GStreamer
. /opt/gstreamer/gst-env

export SELKIES_ENCODER="${SELKIES_ENCODER:-x264enc}"
export SELKIES_ENABLE_RESIZE="${SELKIES_ENABLE_RESIZE:-false}"
if ( [ -z "${SELKIES_TURN_USERNAME}" ] || [ -z "${SELKIES_TURN_PASSWORD}" ] ) && [ -z "${SELKIES_TURN_SHARED_SECRET}" ] || [ -z "${SELKIES_TURN_HOST}" ] || [ -z "${SELKIES_TURN_PORT}" ]; then
  export TURN_RANDOM_PASSWORD="$(cat /dev/urandom | tr -dc 'A-Za-z0-9' | fold -w 24 | head -n 1)"
  export SELKIES_TURN_HOST="$(curl -fsSL checkip.amazonaws.com)"
  export SELKIES_TURN_PORT="3478"
  export SELKIES_TURN_USERNAME="selkies"
  export SELKIES_TURN_PASSWORD="${TURN_RANDOM_PASSWORD}"
  /etc/start-turnserver.sh &
fi
export SELKIES_TURN_PROTOCOL="${SELKIES_TURN_PROTOCOL:-tcp}"

# Wait for X server to start
echo 'Waiting for X socket' && until [ -S "/tmp/.X11-unix/X${DISPLAY#*:}" ]; do sleep 0.5; done && echo 'X Server is ready'

# Clear the cache registry
rm -rf "${HOME}/.cache/gstreamer-1.0"

# Start the selkies-gstreamer WebRTC HTML5 remote desktop application
selkies-gstreamer \
    --addr="0.0.0.0" \
    --port="8080" \
    $@