#test_linkpruefer.py
import unittest
from unittest.mock import MagicMock, patch

# QGIS-Module mocken, damit der Import funktioniert
with patch.dict("sys.modules", {
    "qgis": MagicMock(),
    "qgis.PyQt": MagicMock(),
    "qgis.PyQt.QtCore": MagicMock(),
    "qgis.PyQt.QtNetwork": MagicMock(),
    "qgis.core": MagicMock(),
}):
    from modules.linkpruefer import Linkpruefer


class TestLinkpruefer(unittest.TestCase):

    @patch("modules.linkpruefer.QNetworkReply")
    @patch("modules.linkpruefer.QNetworkRequest")
    @patch("modules.linkpruefer.QUrl")
    @patch("modules.linkpruefer.QEventLoop")
    @patch("modules.linkpruefer.QgsNetworkAccessManager")
    def test_remote_link_ok(
        self, mock_manager, mock_loop, mock_url, mock_request, mock_reply
    ):
        # Setup: simulate successful HEAD request
        reply_instance = MagicMock()
        reply_instance.error.return_value = mock_reply.NetworkError.NoError
        reply_instance.attribute.return_value = 200

        mock_manager.return_value.head.return_value = reply_instance

        lp = Linkpruefer("http://example.com", "REST")
        result = lp.pruefe_link()

        self.assertTrue(result.erfolgreich)
        self.assertEqual(result.daten["quelle"], "remote")

    @patch("modules.linkpruefer.QNetworkReply")
    @patch("modules.linkpruefer.QNetworkRequest")
    @patch("modules.linkpruefer.QUrl")
    @patch("modules.linkpruefer.QEventLoop")
    @patch("modules.linkpruefer.QgsNetworkAccessManager")
    def test_remote_link_error(
        self, mock_manager, mock_loop, mock_url, mock_request, mock_reply
    ):
        # Fake-Reply erzeugen
        reply_instance = MagicMock()
        reply_instance.error.return_value = mock_reply.NetworkError.ConnectionRefusedError
        reply_instance.errorString.return_value = "Connection refused"

        # WICHTIG: finished-Signal simulieren
        reply_instance.finished = MagicMock()
        reply_instance.finished.connect = MagicMock()
        
        # Wenn loop.exec() aufgerufen wird, rufen wir loop.quit() sofort auf
        mock_loop.return_value.exec.side_effect = lambda: mock_loop.return_value.quit()

        # Manager gibt unser Fake-Reply zurück
        mock_manager.return_value.head.return_value = reply_instance

        lp = Linkpruefer("http://example.com", "REST")
        result = lp.pruefe_link()

        self.assertFalse(result.erfolgreich)
        self.assertIn("Verbindungsfehler", result.fehler[0])


    def test_local_link_warning(self):
        lp = Linkpruefer("/path/to/file_without_extension", "OGR")
        result = lp.pruefe_link()

        self.assertTrue(result.erfolgreich)
        self.assertIn("ungewöhnlich", result.warnungen[0])


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