import importlib.util
import sys
import tempfile
import unittest
from pathlib import Path
import types


def _install_pyside6_stubs():
    if "PySide6" in sys.modules:
        return

    pyside6_module = types.ModuleType("PySide6")
    qtcore_module = types.ModuleType("PySide6.QtCore")
    qtgui_module = types.ModuleType("PySide6.QtGui")
    qtwidgets_module = types.ModuleType("PySide6.QtWidgets")

    class _Signal:
        def __init__(self, *args, **kwargs):
            pass

        def connect(self, *args, **kwargs):
            pass

    class _QObject:
        pass

    class _QThread:
        def __init__(self, *args, **kwargs):
            pass

    class _QTimer:
        @staticmethod
        def singleShot(*args, **kwargs):
            pass

    class _QUrl:
        @staticmethod
        def fromLocalFile(path):
            return path

    class _QDesktopServices:
        @staticmethod
        def openUrl(*args, **kwargs):
            return True

    class _Widget:
        def __init__(self, *args, **kwargs):
            pass

    qtcore_module.QObject = _QObject
    qtcore_module.Qt = type("Qt", (), {})
    qtcore_module.QThread = _QThread
    qtcore_module.Signal = _Signal
    qtcore_module.QTimer = _QTimer
    qtcore_module.QUrl = _QUrl
    qtgui_module.QDesktopServices = _QDesktopServices
    qtwidgets_module.QApplication = _Widget
    qtwidgets_module.QLabel = _Widget
    qtwidgets_module.QProgressBar = _Widget
    qtwidgets_module.QVBoxLayout = _Widget
    qtwidgets_module.QWidget = _Widget
    qtwidgets_module.QPushButton = _Widget
    qtwidgets_module.QHBoxLayout = _Widget

    sys.modules["PySide6"] = pyside6_module
    sys.modules["PySide6.QtCore"] = qtcore_module
    sys.modules["PySide6.QtGui"] = qtgui_module
    sys.modules["PySide6.QtWidgets"] = qtwidgets_module


MODULE_PATH = Path("updater_gui.py")
_install_pyside6_stubs()
SPEC = importlib.util.spec_from_file_location("updater_gui_under_test", MODULE_PATH)
updater_gui = importlib.util.module_from_spec(SPEC)
SPEC.loader.exec_module(updater_gui)


class UpdaterGuiTests(unittest.TestCase):
    def test_read_version_marker(self):
        with tempfile.TemporaryDirectory() as tmp_dir:
            marker = Path(tmp_dir) / "version.txt"
            marker.write_text("2.0.1\n", encoding="utf-8")
            value = updater_gui._read_version_marker(tmp_dir)
            self.assertEqual(value, "2.0.1")

    def test_mirror_tree_skips_selected_file(self):
        with tempfile.TemporaryDirectory() as src_tmp, tempfile.TemporaryDirectory() as dst_tmp:
            src = Path(src_tmp)
            dst = Path(dst_tmp)
            (src / "keep.txt").write_text("ok", encoding="utf-8")
            (src / "skip.bin").write_text("x", encoding="utf-8")
            (src / "sub").mkdir()
            (src / "sub" / "nested.txt").write_text("nested", encoding="utf-8")

            updater_gui._mirror_tree(str(src), str(dst), skip_names={"skip.bin"})

            self.assertTrue((dst / "keep.txt").exists())
            self.assertTrue((dst / "sub" / "nested.txt").exists())
            self.assertFalse((dst / "skip.bin").exists())


if __name__ == "__main__":
    unittest.main()