#!/bin/sh
set -e
# 有头模式(HEADLESS=0)需要一个 X server。手动起 Xvfb(比 xvfb-run 省事、不依赖 xauth)。
if [ "${HEADLESS:-0}" = "0" ] || [ "${HEADLESS:-0}" = "false" ]; then
  : "${DISPLAY:=:99}"
  export DISPLAY
  rm -f /tmp/.X99-lock 2>/dev/null || true
  Xvfb "$DISPLAY" -screen 0 "${XVFB_SCREEN:-1366x900x24}" -nolisten tcp >/tmp/xvfb.log 2>&1 &
  XVFB_PID=$!
  # 等 Xvfb 起来
  for _ in 1 2 3 4 5 6 7 8 9 10; do
    if [ -e /tmp/.X99-lock ] || xdpyinfo -display "$DISPLAY" >/dev/null 2>&1; then break; fi
    sleep 0.3
  done
  trap 'kill "$XVFB_PID" 2>/dev/null || true' EXIT INT TERM
fi
exec "$@"