#!/usr/bin/env python3
"""Offscreen GUI smoke test — instantiates the full window, lets the
probe thread settle, populates a demo queue, and grabs a screenshot.

Run: QT_QPA_PLATFORM=offscreen python3 scripts/smoke_gui.py
"""

import os
import sys
import tempfile
from pathlib import Path

os.environ.setdefault("QT_QPA_PLATFORM", "offscreen")
sys.path.insert(0, str(Path(__file__).resolve().parents[1]))

from PySide6.QtCore import QTimer
from PySide6.QtWidgets import QApplication

from thicket.ui_window import ThicketWindow

OUT = Path("/tmp/thicket_smoke.png")


def main() -> int:
    app = QApplication(sys.argv)

    # Demo input dir with a few plausible documents so the queue table
    # shows real rows in the screenshot.
    demo = Path(tempfile.mkdtemp(prefix="bf_smoke_"))
    (demo / "attention-is-all-you-need.pdf").write_bytes(b"%PDF-1.4 stub")
    (demo / "thinking-fast-and-slow.epub").write_bytes(b"PK stub")
    (demo / "zettelkasten-method.md").write_text("# Zettelkasten\n\nnotes.\n")
    (demo / "reading backlog.txt").write_text("todo list\n")

    window = ThicketWindow()
    window.in_path_edit.setText(str(demo))
    window.show()

    def settle():
        window._scan()
        window._on_file_status(str(demo / "zettelkasten-method.md"), "DONE")
        window._on_file_detail(str(demo / "zettelkasten-method.md"), "14 chunks indexed")
        window._on_file_status(str(demo / "thinking-fast-and-slow.epub"), "EXTRACT")
        window._on_file_detail(str(demo / "thinking-fast-and-slow.epub"), "extracting text")
        window.query_edit.setText("how do transformers handle attention?")
        window.log_box.append("> [1] 0.873  Attention Is All You Need § Page 3")

    QTimer.singleShot(1500, settle)

    def finish():
        ok_run = window.btn_run.isEnabled()
        window.grab().save(str(OUT))
        print(f"btn_run enabled: {ok_run}")
        print(f"status bar: {window.status_label.text()!r}")
        print(f"queue rows: {window.queue_table.rowCount()}")
        print(f"screenshot: {OUT}")
        results["ok"] = bool(ok_run and window.queue_table.rowCount() == 4)
        window.close()
        QTimer.singleShot(0, app.quit)

    results = {}
    QTimer.singleShot(3000, finish)
    app.exec()
    return 0 if results.get("ok") else 1


if __name__ == "__main__":
    sys.exit(main())