#!/usr/bin/env bash
export DISPLAY=:99

SCREEN_W=1920
SCREEN_H=1080
TOOLBAR_H=32

find_window() {
  local title="$1"
  xwininfo -root -tree 2>/dev/null | grep "\"${title}\"" | head -1 | awk '{print $1}'
}

window_state() {
  xwininfo -id "$1" 2>/dev/null | awk '/Map State/{print $NF}'
}

center_window() {
  local wid="$1"
  local geom w h x y
  geom="$(xwininfo -id "${wid}" 2>/dev/null | awk '/-geometry/{print $2}')"
  w="${geom%%x*}"
  h="${geom#*x}"; h="${h%%+*}"
  [ -n "${w}" ] && [ -n "${h}" ] || return 0
  x=$(( (SCREEN_W - w) / 2 ))
  y=$(( (SCREEN_H - TOOLBAR_H - h) / 2 ))
  [ "${y}" -lt 0 ] && y=0
  xdotool windowmove "${wid}" "${x}" "${y}" 2>/dev/null || true
}

while pgrep -u steam -f "steam -srt-logger-opened" >/dev/null 2>&1; do
  wid=""
  for title in "Sign in to Steam" "Steam Big Picture Mode"; do
    wid="$(find_window "${title}")"
    [ -n "${wid}" ] && break
  done

  if [ -n "${wid}" ]; then
    state="$(window_state "${wid}")"
    if [ "${state}" = "IsUnMapped" ] || [ -z "${state}" ]; then
      xdotool windowmap "${wid}" 2>/dev/null || true
    fi
    xdotool windowraise "${wid}" 2>/dev/null || true
    center_window "${wid}"
    xdotool windowactivate "${wid}" 2>/dev/null || true
  fi
  sleep 0.5
done