shanxia/bx/bx-backend/app/core/deps.py

"""FastAPI dependencies: DB session, current user, role guards."""

from fastapi import Depends, HTTPException, status
from fastapi.security import OAuth2PasswordBearer
from sqlalchemy.orm import Session

from app.database import get_db
from app.core.security import decode_access_token
from app.models.user import User

oauth2_scheme = OAuth2PasswordBearer(tokenUrl="/api/auth/login")


def get_current_user(
    token: str = Depends(oauth2_scheme),
    db: Session = Depends(get_db),
) -> User:
    payload = decode_access_token(token)
    if payload is None:
        raise HTTPException(
            status_code=status.HTTP_401_UNAUTHORIZED,
            detail="无效或过期的认证凭据",
            headers={"WWW-Authenticate": "Bearer"},
        )
    user_id: int | None = payload.get("sub")
    if user_id is None:
        raise HTTPException(
            status_code=status.HTTP_401_UNAUTHORIZED,
            detail="无效的认证凭据",
        )
    user = db.query(User).filter(User.id == user_id, User.del_flag == 0).first()
    if user is None:
        raise HTTPException(
            status_code=status.HTTP_401_UNAUTHORIZED,
            detail="用户不存在",
        )
    if user.status != 1:
        raise HTTPException(
            status_code=status.HTTP_403_FORBIDDEN,
            detail="用户已被禁用",
        )
    return user


def require_roles(*role_codes: str):
    """Dependency factory: currently bypasses role check."""
    def _check(current_user: User = Depends(get_current_user)):
        return current_user
    return _check