import json
import subprocess
import unittest
from pathlib import Path

import generate_kinematics_runtime_report


ROOT = Path(__file__).resolve().parents[1]


class KinematicsRuntimeTests(unittest.TestCase):
    def test_native_kinematics_binary(self):
        binary = ROOT / "build-native/sim_kinematics_test"
        if not binary.is_file():
            self.skipTest("native build has not been generated")
        result = subprocess.run([str(binary)], cwd=ROOT, check=False, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
        self.assertEqual(result.returncode, 0, result.stderr.decode(errors="replace"))

    def test_wasm_exports_kinematics_api(self):
        module = ROOT / "build-wasm/linuxcnc-sim-core.js"
        if not module.is_file():
            self.skipTest("WASM build has not been generated")
        text = module.read_text(encoding="utf-8")
        for symbol in ("sim_kinematics_init", "sim_kinematics_forward_ex", "sim_kinematics_inverse_ex", "sim_kinematics_state_hash"):
            self.assertIn(symbol, text)

    def test_report_contract(self):
        report = json.loads((ROOT / "coverage/kinematics-runtime.report.json").read_text(encoding="utf-8"))
        self.assertEqual(report["schema"], "kinematics-runtime-report.v1")
        self.assertEqual(report["status"], "partial")
        self.assertTrue(report["registered_build_targets"]["native_ctest"])
        self.assertFalse(report["closure"]["full_linuxcnc_kinematics"])
        self.assertIn("linear-delta", report["supported_types"])
        self.assertIn("rotary-delta", report["supported_types"])
        self.assertIn("tripod", report["supported_types"])

    def test_report_is_deterministic(self):
        first = ROOT / "coverage/.kinematics-runtime-one.json"
        second = ROOT / "coverage/.kinematics-runtime-two.json"
        try:
            report_one = generate_kinematics_runtime_report.generate(ROOT, first)
            report_two = generate_kinematics_runtime_report.generate(ROOT, second)
            self.assertEqual(report_one, report_two)
        finally:
            first.unlink(missing_ok=True)
            second.unlink(missing_ok=True)


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