from __future__ import annotations

import subprocess
import sys
import time
from pathlib import Path

import pytest

from game_data_capture.ingest.clipboard import ClipboardIntake, WatchConfig


def test_shutdown_reaps_real_child_process_group(
    tmp_path: Path, monkeypatch: pytest.MonkeyPatch
) -> None:
    child: subprocess.Popen[bytes] | None = None
    real_popen = subprocess.Popen

    def fake_popen(args: list[str], **kwargs: object) -> subprocess.Popen[bytes]:
        nonlocal child
        assert args[0] == "wl-paste" and kwargs["shell"] is False
        child = real_popen(
            [sys.executable, "-c", "import time; time.sleep(30)"],
            stdin=subprocess.DEVNULL,
            stdout=subprocess.PIPE,
            stderr=subprocess.DEVNULL,
            start_new_session=True,
        )
        return child

    monkeypatch.setattr(subprocess, "Popen", fake_popen)
    intake = ClipboardIntake(
        WatchConfig((tmp_path / "spool").resolve(), 100, 1, "v1", 1, 0.01, 0.2)
    )
    intake.arm()
    assert child is not None and child.poll() is None
    intake.shutdown()
    for _ in range(20):
        if child.poll() is not None:
            break
        time.sleep(0.01)
    assert child.poll() is not None