from __future__ import annotations

import json
from pathlib import Path

import yaml

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


import sys

if sys.stdout.encoding and sys.stdout.encoding.lower() not in ("utf-8", "utf8"):
    sys.stdout = open(sys.stdout.fileno(), mode="w", encoding="utf-8", buffering=1)


def main() -> int:
    spec_path = ROOT / "spec" / "operating_cadence.yaml"
    if not spec_path.exists():
        print(json.dumps({"formula_id": "OPERATING_CADENCE_V1", "gate": "FAIL",
                          "error": f"spec not found: {spec_path}"}))
        return 1

    spec = yaml.safe_load(spec_path.read_text(encoding="utf-8"))
    cadence = spec.get("cadence", {})

    weekly = cadence.get("weekly_rebalance", {})
    rebalance_days = weekly.get("days", [])
    weekend_rebalance_flag = "Saturday" in rebalance_days and "Sunday" in rebalance_days

    interim = cadence.get("interim_check", {})
    monthly_midcheck_dates = sorted(interim.get("dates", []))
    midcheck_ok = monthly_midcheck_dates == [1, 11, 21]

    # Cross-check against live signal artifact if available
    signal_path = ROOT / "Temp" / "operating_cadence_signal_v1.json"
    signal_status = "DATA_MISSING"
    if signal_path.exists():
        sig = json.loads(signal_path.read_text(encoding="utf-8"))
        sig_id = sig.get("formula_id", "")
        if sig_id == "OPERATING_CADENCE_SIGNAL_V1":
            signal_status = "PRESENT"

    gate = "PASS" if weekend_rebalance_flag and midcheck_ok else "FAIL"

    result = {
        "formula_id": "OPERATING_CADENCE_V1",
        "weekend_rebalance_flag": weekend_rebalance_flag,
        "rebalance_days": rebalance_days,
        "monthly_midcheck_dates": monthly_midcheck_dates,
        "signal_artifact_status": signal_status,
        "gate": gate,
    }

    out = ROOT / "Temp" / "operating_cadence_v1.json"
    out.write_text(json.dumps(result, ensure_ascii=False, indent=2), encoding="utf-8")
    print(json.dumps(result, ensure_ascii=True, indent=2))
    return 0 if gate == "PASS" else 1


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