from __future__ import annotations

import tempfile
import unittest
from pathlib import Path

from cold_display_guard.config import load_settings


class ConfigTests(unittest.TestCase):
    def test_loads_settings_from_toml(self) -> None:
        with tempfile.TemporaryDirectory() as tmpdir:
            path = Path(tmpdir) / "config.toml"
            path.write_text(
                """
camera_id = "cam_a"

[thresholds]
max_dwell_seconds = 30
trash_confirmation_seconds = 4

[layout]
rows = 1
cols = 2
""".strip(),
                encoding="utf-8",
            )

            settings = load_settings(path)

        self.assertEqual(settings.camera_id, "cam_a")
        self.assertEqual(settings.max_dwell_seconds, 30)
        self.assertEqual(settings.trash_confirmation_seconds, 4)
        self.assertEqual(settings.zone_ids, ("r1c1", "r1c2"))


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