#!/usr/bin/env python3
"""Verify notification metadata on a private X server and accessibility bus."""
import os
from pathlib import Path
import subprocess
import sys


def main() -> None:
    if sys.argv[1:] == ["--inside"]:
        environment = dict(os.environ, CTHULHU_NATIVE_WEBSCRIPTS="1")
        environment.setdefault("GOCACHE", "/tmp/cthulhu-cache")
        subprocess.run(
            ["go", "test", "./internal/atspi", "-run", "^TestNativeWebScriptNotificationCapture$",
             "-count=1", "-v", "-timeout=30s"],
            cwd=Path(__file__).resolve().parents[1], env=environment, check=True, timeout=35,
        )
        return
    readFd, writeFd = os.pipe()
    server = subprocess.Popen(
        ["Xvfb", "-displayfd", str(writeFd), "-screen", "0", "800x600x24", "-nolisten", "tcp"],
        pass_fds=(writeFd,), stderr=subprocess.DEVNULL,
    )
    os.close(writeFd)
    try:
        with os.fdopen(readFd) as reader:
            display = reader.readline().strip()
        if not display:
            raise RuntimeError("Xvfb failed to start")
        environment = dict(os.environ, DISPLAY=":" + display, XDG_SESSION_TYPE="x11")
        for key in ("DBUS_SESSION_BUS_ADDRESS", "AT_SPI_BUS_ADDRESS", "WAYLAND_DISPLAY"):
            environment.pop(key, None)
        subprocess.run(
            ["dbus-run-session", "--", sys.executable, str(Path(__file__).resolve()), "--inside"],
            env=environment, check=True, timeout=45,
        )
    finally:
        server.terminate()
        server.wait(timeout=3)


if __name__ == "__main__":
    main()