import os
from typing import Union, Dict, List

from fastapi import APIRouter, HTTPException
import json

router = APIRouter()


# 读取 JSON 文件
class DataLoader:
    _data = None  # 类变量，用于存储加载的 JSON 数据

    @staticmethod
    def load_json_data(file_path):
        print(f"current fileop.py path: {file_path}")
        if DataLoader._data is None:
            try:
                with open(file_path, "r", encoding='utf-8') as file:
                    DataLoader._data = json.load(file)
            except FileNotFoundError:
                raise HTTPException(status_code=500, detail="File not found")
            except json.JSONDecodeError:
                raise HTTPException(status_code=500, detail="Invalid JSON")
        return DataLoader._data