"""Headless check for the About button and dialog: saves header and dialog PNGs."""

import sys
from pathlib import Path

from PySide6.QtCore import QTimer
from PySide6.QtGui import QFont
from PySide6.QtWidgets import QApplication, QMessageBox

sys.path.insert(0, str(Path(__file__).resolve().parent.parent / "src"))
import main as m

OUT = Path(__file__).resolve().parent


def snap_dialog():
    boxes = [w for w in QApplication.topLevelWidgets() if isinstance(w, QMessageBox)]
    if not boxes:
        QTimer.singleShot(200, snap_dialog)
        return
    boxes[0].grab().save(str(OUT / "about-dialog.png"))
    boxes[0].close()


def open_about(window):
    QTimer.singleShot(600, lambda: snap_dialog())
    window.show_about()


def main():
    app = QApplication(sys.argv)
    app.setApplicationName(m.APP_NAME)
    app.setFont(QFont("Microsoft YaHei UI", 10))
    theme_manager = m.ThemeManager(app)
    window = m.Window(theme_manager)
    window.show()

    def grab_header():
        window.grab().save(str(OUT / "about-header.png"))
        open_about(window)

    QTimer.singleShot(1500, grab_header)
    QTimer.singleShot(6000, app.quit)
    sys.exit(app.exec())


if __name__ == "__main__":
    main()