#!/usr/bin/env python3
"""Generate the legacy XYZAC parity report from the structured comparator."""

from __future__ import annotations

import hashlib
import json
import subprocess
from pathlib import Path
from typing import Any

ROOT = Path(__file__).resolve().parents[1]
STRUCTURED = ROOT / "coverage/xyzac-trt-trace-parity.report.json"
REPORT = ROOT / "coverage/xyzac-trt-native-wasm-parity.report.json"


def canonical(value: Any) -> str:
    return json.dumps(value, ensure_ascii=False, sort_keys=True, separators=(",", ":"))


def main() -> int:
    result = subprocess.run(["python3", "scripts/compare_xyzac_native_wasm_trace.py"], cwd=ROOT, check=False)
    if result.returncode != 0 or not STRUCTURED.is_file():
        return 1
    source = json.loads(STRUCTURED.read_text(encoding="utf-8"))
    report: dict[str, Any] = {
        "schema": "xyzac-trt-native-wasm-parity.v2",
        "task_id": "PARITY-00",
        "context_id": source["context_id"],
        "case": source["case"]["path"],
        "scope": "xyzac_only",
        "status": source["status"],
        "native": source.get("traces", {}).get("native", {}),
        "wasm": source.get("traces", {}).get("wasm", {}),
        "worker": source.get("traces", {}).get("worker", {}),
        "trace": {
            "levels": source["levels"],
            "native_wasm": source["native_wasm"],
            "native_worker": source["native_worker"],
            "first_divergent_tick": source["first_divergent_tick"],
            "positive_divergence_sample": source["positive_divergence_sample"],
        },
        "authority": "linuxcnc-wasm-worker",
        "js_authority": 0,
        "release_status": "STOP_RELEASE",
        "report_sha256": None,
    }
    report["report_sha256"] = hashlib.sha256(canonical({key: value for key, value in report.items() if key != "report_sha256"}).encode()).hexdigest()
    REPORT.write_text(json.dumps(report, ensure_ascii=False, sort_keys=True, indent=2) + "\n", encoding="utf-8")
    print(json.dumps({"schema": report["schema"], "status": report["status"], "scope": report["scope"], "report_sha256": report["report_sha256"]}, ensure_ascii=False))
    return 0 if report["status"] == "verified" else 1


if __name__ == "__main__":
    raise SystemExit(main())