from __future__ import annotations

import unittest
from pathlib import Path

from streamlit.testing.v1 import AppTest

ROOT = Path(__file__).resolve().parents[1]


class StreamlitSmokeTests(unittest.TestCase):
    def test_default_demo_renders_without_exception(self) -> None:
        app = AppTest.from_file(str(ROOT / "app.py"), default_timeout=30).run()
        self.assertEqual(len(app.exception), 0)
        self.assertGreaterEqual(len(app.button), 8)
        self.assertGreaterEqual(len(app.selectbox), 2)
        self.assertEqual(app.radio[0].value, "Dane demonstracyjne")

    def test_upload_mode_has_safe_empty_state(self) -> None:
        app = AppTest.from_file(str(ROOT / "app.py"), default_timeout=30).run()
        app.radio[0].set_value("Wgraj plik CSV").run()
        self.assertEqual(len(app.exception), 0)
        self.assertGreaterEqual(len(app.info), 1)

    def test_cylinder_grid_and_detail_selector_share_state(self) -> None:
        app = AppTest.from_file(str(ROOT / "app.py"), default_timeout=30).run()
        target = next(button for button in app.button if "C03" in button.label)
        target.click().run()
        detail_selector = next(
            selector for selector in app.selectbox if selector.label == "Cylinder do analizy"
        )
        self.assertEqual(detail_selector.value, 3)
        rendered = "\n".join(markdown.value for markdown in app.markdown)
        self.assertIn("CYLINDER 03", rendered)