import unittest
from pathlib import Path

try:
    import tomllib
except ModuleNotFoundError:  # pragma: no cover
    import tomli as tomllib


ROOT = Path(__file__).resolve().parents[1]
AGENT_PATH = ROOT / ".codex" / "agents" / "reference-model-agent.toml"
REFERENCE_MODELS_README = ROOT / "docs" / "reference-models" / "README.md"


class ReferenceModelAgentConfigTests(unittest.TestCase):
    def test_reference_model_agent_toml_has_required_codex_fields(self):
        data = tomllib.loads(AGENT_PATH.read_text(encoding="utf-8"))

        self.assertEqual(data["name"], "reference-model-agent")
        self.assertIn("reference model packages", data["description"])
        self.assertEqual(data["sandbox_mode"], "read-only")
        self.assertEqual(data["model_reasoning_effort"], "high")
        self.assertIn("developer_instructions", data)

    def test_reference_model_agent_instructions_enforce_boundaries(self):
        instructions = AGENT_PATH.read_text(encoding="utf-8")

        for required_text in (
            "Do not implement code.",
            "Do not implement parsers.",
            "Do not design C++ APIs",
            "Do not run Abaqus, Nastran, or any reference solver.",
            "Do not generate reference CSVs.",
            "Do not compare solver results.",
            "Do not approve release readiness.",
        ):
            self.assertIn(required_text, instructions)

    def test_reference_model_agent_instructions_define_reference_contract(self):
        instructions = AGENT_PATH.read_text(encoding="utf-8")

        for required_text in (
            "FESA reference models use Abaqus input files.",
            "references/<feature-id>/<model-id>/",
            "model.inp",
            "metadata.json",
            "displacements.csv",
            "reactions.csv",
            "element_forces.csv",
            "stresses.csv",
        ):
            self.assertIn(required_text, instructions)

    def test_reference_model_agent_instructions_define_output_contract(self):
        instructions = AGENT_PATH.read_text(encoding="utf-8")

        for required_text in (
            "Reference Strategy",
            "Model Inventory",
            "Abaqus Input Requirements",
            "Artifact Bundle Contract",
            "Metadata JSON Contract",
            "Reference CSV Requirements",
            "Coverage Matrix",
            "Downstream Handoff",
        ):
            self.assertIn(required_text, instructions)

    def test_reference_model_document_guide_defines_output_contract(self):
        guide = REFERENCE_MODELS_README.read_text(encoding="utf-8")

        for required_text in (
            "Reference Strategy",
            "Model Inventory",
            "Abaqus Input Requirements",
            "Artifact Bundle Contract",
            "Metadata JSON Contract",
            "Reference CSV Requirements",
            "Coverage Matrix",
            "Downstream Handoff",
            "references/<feature-id>/<model-id>/",
        ):
            self.assertIn(required_text, guide)


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