from __future__ import annotations

import sys
import tempfile
import unittest
from pathlib import Path


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

from app.services.render_bundle import render_section  # noqa: E402
from app.settings import ProviderConfig, ProviderModel, Settings  # noqa: E402


BACKEND = ROOT / "backend"


def settings(root: Path) -> Settings:
    provider = ProviderConfig("test", "Test", "https://example.invalid/v1", "test-key", (ProviderModel("test-model"),))
    return Settings(
        task_root=root / "tasks",
        conversation_root=root / "conversations",
        library_root=BACKEND / "cdsl_library",
        engine_root=BACKEND / "engine" / "cdsl_engine",
        llm_base_url=provider.base_url,
        llm_api_key=provider.api_key,
        llm_model="test-model",
        llm_timeout_s=1,
        default_provider_id="test",
        providers=(provider,),
    )


class RenderBundleTests(unittest.TestCase):
    def test_section_uses_build123d_part_operation_and_emits_a_png(self) -> None:
        import build123d as b3d

        with tempfile.TemporaryDirectory() as temporary:
            root = Path(temporary)
            step_path = root / "block.step"
            b3d.export_step(b3d.Box(20, 10, 8), str(step_path))

            result = render_section(
                settings(root),
                step_path=step_path,
                output_dir=root / "section",
                origin_mm=[10, 5, 4],
                normal=[1, 0, 0],
            )

            self.assertTrue(Path(str(result["path"])).is_file())
            self.assertGreater(int(result["contour_count"]), 0)
            self.assertEqual(result["renderer"], "python-occ-section-pillow")


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