import json
import unittest
from pathlib import Path

import generate_io_report

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


class IoReportTests(unittest.TestCase):
    def test_contract(self):
        report = json.loads((ROOT / "coverage/io-runtime.report.json").read_text(encoding="utf-8"))
        self.assertEqual(report["schema"], "io-runtime-report.v1")
        self.assertEqual(report["implementation_status"], "verified")
        self.assertEqual(report["boundaries"]["invalid_pin_type"], -304)
        self.assertEqual(report["boundaries"]["spindle_limit"], -906)
        self.assertEqual(report["boundaries"]["tool_change_while_spinning"], -910)
        self.assertEqual(report["boundaries"]["probe_trigger"], 0)
        self.assertEqual(report["boundaries"]["probe_state"], 2)
        self.assertEqual(report["boundaries"]["estop_command"], -904)
        self.assertEqual(report["boundaries"]["estop_recovery_before_clear"], -904)
        self.assertTrue(report["boundaries"]["state_hash_stable"])
        self.assertTrue(report["samples"]["byte_identical_json"])
        self.assertTrue(report["samples"]["state_hash_identical"])
        self.assertEqual(report["oracle"]["status"], "blocked")

    def test_deterministic(self):
        first, second = ROOT / "coverage/.io-one.json", ROOT / "coverage/.io-two.json"
        try:
            self.assertEqual(generate_io_report.generate(ROOT, first), generate_io_report.generate(ROOT, second))
        finally:
            first.unlink(missing_ok=True)
            second.unlink(missing_ok=True)

    def test_wasm_exports_io_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_io_init", "sim_io_spindle_command", "sim_io_tool_change", "sim_io_probe_update", "sim_io_recover"):
            self.assertIn(symbol, text)


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