from fastapi import Depends, HTTPException, status
from fastapi.security import HTTPBearer, HTTPAuthorizationCredentials
from global_state import get
from db.tbs_db import TbsDb
from db_model.user import UserModel

# 创建一个 HTTPBearer 实例
security = HTTPBearer()

def get_current_user(credentials: HTTPAuthorizationCredentials = Depends(security)):
    token = credentials.credentials
    # 假设你有一个函数来验证Token并返回用户
    user = validate_token(token)
    if user is None:
        raise HTTPException(
            status_code=status.HTTP_401_UNAUTHORIZED,
            detail="Invalid authentication credentials",
            headers={"WWW-Authenticate": "Bearer"},
        )
    
    return user

def validate_token(token: str):
    db_module_filename = f"{get('project_root')}/db/cloudflare.py"
    query = f"SELECT * FROM users where api_key='{token}'"
    response = TbsDb(db_module_filename, "Cloudflare").get_item(query)
    if response is None:
        return None
    result = response['result'][0]['results']
    if len(result) == 0:
        return None
    result = result[0]
    result=UserModel(**result)
    return result