#!/usr/bin/env python3
"""Contract tests for S6-05 OPFS/browser boundary evidence."""

from __future__ import annotations

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

sys.path.insert(0, str(Path(__file__).resolve().parent))
import generate_authoritative_browser_s6_05


ROOT = Path(__file__).resolve().parents[1]
REPORT = ROOT / "coverage/authoritative-browser-s6-05.report.json"


class AuthoritativeBrowserS605Tests(unittest.TestCase):
    def test_contract(self) -> None:
        report = json.loads(REPORT.read_text(encoding="utf-8"))
        self.assertEqual(report["schema"], "authoritative-browser-s6-05.v1")
        self.assertEqual(report["task_id"], "S6-05")
        self.assertEqual(report["status"], "verified")
        self.assertEqual(report["implementation_status"], "verified")
        self.assertEqual(report["checks"]["chromium_probe"]["status"], "blocked")
        self.assertTrue(report["checks"]["chromium_probe"]["stable"])
        self.assertEqual(report["checks"]["headed_playwright_probe"]["status"], "verified")
        self.assertTrue(report["checks"]["headed_playwright_probe"]["stable"])
        self.assertEqual(report["checks"]["safari_firefox_boundary"]["status"], "out_of_scope")
        self.assertEqual(report["checks"]["release_stop"]["action"], "STOP_RELEASE")

    def test_self_hash(self) -> None:
        report = json.loads(REPORT.read_text(encoding="utf-8"))
        unsigned = {key: value for key, value in report.items() if key != "report_sha256"}
        self.assertEqual(report["report_sha256"], hashlib.sha256(generate_authoritative_browser_s6_05.canonical(unsigned).encode()).hexdigest())

    def test_deterministic(self) -> None:
        with tempfile.TemporaryDirectory() as directory:
            first = generate_authoritative_browser_s6_05.generate(ROOT, Path(directory) / "one.json")
            second = generate_authoritative_browser_s6_05.generate(ROOT, Path(directory) / "two.json")
            self.assertEqual(first, second)


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