#!/bin/sh
set -eu

Xvfb :99 -screen 0 "${SCREEN_SIZE:-1920x1080x24}" -nolisten tcp -ac &
xvfb_pid=$!

for _ in 1 2 3 4 5 6 7 8 9 10; do
  [ -S /tmp/.X11-unix/X99 ] && break
  kill -0 "$xvfb_pid" 2>/dev/null || exit 1
  sleep 0.1
done

[ -S /tmp/.X11-unix/X99 ] || {
  echo "Xvfb did not become ready" >&2
  exit 1
}

export DISPLAY=:99

remote_debugging_port=${REMOTE_DEBUGGING_PORT:-9222}
case "$remote_debugging_port" in
  ''|*[!0-9]*) echo "REMOTE_DEBUGGING_PORT must be numeric" >&2; exit 2 ;;
esac

socat \
  "TCP-LISTEN:${remote_debugging_port},fork,reuseaddr,bind=$(hostname -i)" \
  "TCP:127.0.0.1:${remote_debugging_port}" &

exec /opt/chromium/chrome \
  --disable-dev-shm-usage \
  --no-sandbox \
  --no-default-browser-check \
  --no-first-run \
  --remote-debugging-port="$remote_debugging_port" \
  --user-data-dir=/data \
  "$@"