#!/usr/bin/env python3
from __future__ import annotations

import hashlib
import json
import unittest
from pathlib import Path

import sys
sys.path.insert(0, str(Path(__file__).resolve().parent))
from generate_panel_02_snapshot_projection import canonical, OUTPUT


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


class Panel02SnapshotProjectionTests(unittest.TestCase):
    def test_contract(self) -> None:
        report = json.loads((ROOT / OUTPUT).read_text(encoding="utf-8"))
        self.assertEqual(report["schema"], "panel-02-snapshot-projection.v1")
        self.assertEqual(report["status"], "verified")
        self.assertEqual(report["projection_schema"], "axis-panel-snapshot.v1")
        self.assertIn("gates", report["fields"])
        self.assertTrue(all(item["status"] == "verified" for item in report["checks"].values()))

    def test_self_hash(self) -> None:
        report = json.loads((ROOT / OUTPUT).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(canonical(unsigned).encode()).hexdigest())


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