"""Model 层的数据访问：唯一读写入口(此处用 JSON 文件示例)。"""

from __future__ import annotations

import json
import os
from pathlib import Path

# Runtime data belongs under hexi/data, not beside importable plugin code.
_DATA_DIR = Path(__file__).resolve().parents[2] / "data" / "nonebot_plugin_template"
_STORE = _DATA_DIR / "store.json"


def _load() -> dict:
    if _STORE.exists():
        try:
            return json.loads(_STORE.read_text("utf-8"))
        except json.JSONDecodeError:
            return {}
    return {}


def _save(data: dict) -> None:
    _DATA_DIR.mkdir(parents=True, exist_ok=True)
    tmp = _STORE.with_suffix(".tmp")
    tmp.write_text(json.dumps(data, ensure_ascii=False, indent=2), "utf-8")
    os.replace(tmp, _STORE)  # 原子写


def get_record(key: str):
    return _load().get(key)


def save_record(key: str, value) -> None:
    data = _load()
    data[key] = value
    _save(data)