from __future__ import annotations

import sys
import tempfile
import unittest
from pathlib import Path

from build123d import import_step


ROOT = Path(__file__).resolve().parents[2]
sys.path.insert(0, str(ROOT / "backend" / "engine"))

import cdsl_engine  # noqa: E402


class SphereAddTests(unittest.TestCase):
    def test_cdsl_only_rebuilds_a_sphere_at_the_requested_center(self) -> None:
        cdsl = {
            "schema": "cad.cdsl.llm.v1",
            "schema_version": "1.0.0",
            "kind": "part",
            "part_id": "sphere_test",
            "meta": {"unit": "mm"},
            "geometry": {"sketches": []},
            "features": [{
                "id": "sphere",
                "atomic_id": "sphere_add",
                "depends_on": [],
                "name": "Test sphere",
                "params": {"radius_mm": 2.5, "center_mm": [3.0, -4.0, 5.0]},
            }],
        }

        with tempfile.TemporaryDirectory() as directory:
            out_step = Path(directory) / "sphere.step"
            result = cdsl_engine.run_rebuild(cdsl, out_step)
            shape = import_step(str(out_step))
            bbox = shape.bounding_box()

        self.assertEqual(result["engine"], "cdsl_only")
        self.assertAlmostEqual(shape.volume, 4 / 3 * 3.141592653589793 * 2.5 ** 3, places=5)
        self.assertEqual((bbox.min.X, bbox.min.Y, bbox.min.Z), (0.5, -6.5, 2.5))
        self.assertEqual((bbox.max.X, bbox.max.Y, bbox.max.Z), (5.5, -1.5, 7.5))


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