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

import argparse
import json
from pathlib import Path
from typing import Any

import yaml


def load_yaml(path: Path) -> dict[str, Any]:
    if not path.exists():
        raise FileNotFoundError(path)
    return yaml.safe_load(path.read_text(encoding="utf-8"))


def main(argv: list[str] | None = None) -> int:
    parser = argparse.ArgumentParser(description="Validate WBS-10 dotnet normalization contract")
    parser.add_argument("--contract", default="docs/WBS_10_DOTNET_NORMALIZATION_CONTRACT.yaml")
    args = parser.parse_args(argv)

    contract_path = Path(args.contract).resolve()
    payload: dict[str, Any] = {
        "formula_id": "WBS_10_DOTNET_NORMALIZATION_CONTRACT_V1",
        "gate": "FAIL",
        "missing": [],
        "evidence": {"contract": str(contract_path)},
    }

    try:
        data = load_yaml(contract_path)
    except FileNotFoundError:
        payload["missing"].append("contract missing")
        print(json.dumps(payload, ensure_ascii=False, indent=2))
        return 1

    if data.get("formula_id") != "WBS_10_DOTNET_NORMALIZATION_CONTRACT_V1":
        payload["missing"].append("formula_id")
    if data.get("goal") != "쓰기 경로 정규화와 읽기 경로 역정규화 경계를 고정한다.":
        payload["missing"].append("goal")

    write_path = data.get("canonical_write_path") or {}
    if write_path.get("schema") != "engine_history":
        payload["missing"].append("canonical_write_path.schema")
    tables = write_path.get("tables") or []
    for required in {
        "source_observation",
        "factor_definition",
        "factor_observation",
        "decision_event",
        "decision_factor_evidence",
        "outcome_evaluation",
    } - set(tables):
        payload["missing"].append(f"{required} missing")

    if data.get("canonical_read_path", {}).get("view") != "engine_history.training_example_v1":
        payload["missing"].append("canonical_read_path.view")

    if not data.get("forbidden_patterns"):
        payload["missing"].append("forbidden_patterns")

    payload["gate"] = "PASS" if not payload["missing"] else "FAIL"
    payload["message"] = (
        "WBS-10 dotnet normalization contract validation passed."
        if payload["gate"] == "PASS"
        else "WBS-10 dotnet normalization contract validation failed."
    )

    out_path = contract_path.parent.parent / "Temp" / "wbs_10_dotnet_normalization_contract_v1.json"
    out_path.parent.mkdir(parents=True, exist_ok=True)
    out_path.write_text(json.dumps(payload, ensure_ascii=False, indent=2), encoding="utf-8")
    print(json.dumps(payload, ensure_ascii=False, indent=2))
    return 0 if payload["gate"] == "PASS" else 1


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