import json
import sys
import unittest
from pathlib import Path
from tempfile import TemporaryDirectory

sys.path.insert(0, str(Path(__file__).resolve().parent))

from generate_kinematics_abi_contract import generate


class KinematicsAbiContractTests(unittest.TestCase):
    def test_repository_contract_is_verified(self):
        root = Path(__file__).resolve().parents[1]
        report = json.loads((root / "coverage/kinematics-abi-contract.json").read_text(encoding="utf-8"))
        self.assertEqual(report["schema"], "kinematics-abi-contract.v1")
        self.assertEqual(report["status"], "verified")
        self.assertEqual(report["missing_required_exports"], [])
        self.assertEqual(report["errors"]["SIM_KIN_ERR_NONFINITE"], -701)

    def test_missing_export_blocks_contract(self):
        directory = TemporaryDirectory()
        self.addCleanup(directory.cleanup)
        root = Path(directory.name)
        (root / "wasm-core/include").mkdir(parents=True)
        (root / "wasm-core/include/sim_kinematics.h").write_text(
            "enum sim_kinematics_result { SIM_KIN_OK = 0 };\n"
            "typedef struct sim_kinematics_config { int type; } sim_kinematics_config;\n"
            "int sim_kinematics_init(void);\nint sim_kinematics_forward(void);\n",
            encoding="utf-8",
        )
        (root / "wasm-core/CMakeLists.txt").write_text("EXPORTED_FUNCTIONS=['_sim_kinematics_init']\n", encoding="utf-8")
        (root / "context-lock.json").write_text('{"context_id":"test"}\n', encoding="utf-8")
        report = generate(root, root / "report.json")
        self.assertEqual(report["status"], "blocked")
        self.assertIn("sim_kinematics_state_hash", report["missing_required_exports"])


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