#!/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 read model contract")
    parser.add_argument("--contract", default="docs/WBS_10_DOTNET_READ_MODEL_CONTRACT.yaml")
    args = parser.parse_args(argv)

    contract_path = Path(args.contract).resolve()
    payload: dict[str, Any] = {
        "formula_id": "WBS_10_DOTNET_READ_MODEL_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_READ_MODEL_CONTRACT_V1":
        payload["missing"].append("formula_id")
    if data.get("goal") != "운영 화면과 조회 API의 read model 경계를 분리한다.":
        payload["missing"].append("goal")

    models = data.get("read_models") or []
    if len(models) < 3:
        payload["missing"].append("read_models")
    for model in models:
        if not model.get("model_id"):
            payload["missing"].append("model_id")
        if not model.get("purpose"):
            payload["missing"].append(f"{model.get('model_id', 'unknown')}.purpose")
        if not model.get("source"):
            payload["missing"].append(f"{model.get('model_id', 'unknown')}.source")
        if not model.get("consumers"):
            payload["missing"].append(f"{model.get('model_id', 'unknown')}.consumers")
        if not model.get("fields"):
            payload["missing"].append(f"{model.get('model_id', 'unknown')}.fields")
        if not model.get("staleness_budget"):
            payload["missing"].append(f"{model.get('model_id', 'unknown')}.staleness_budget")

    rules = data.get("rules") or []
    if len(rules) < 4:
        payload["missing"].append("rules")

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

    out_path = contract_path.parent.parent / "Temp" / "wbs_10_dotnet_read_model_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())