volsu-contests/backend/app/dependencies.py
2025-11-30 19:55:50 +03:00

61 lines
1.6 KiB
Python

from fastapi import Depends, HTTPException, status
from fastapi.security import OAuth2PasswordBearer
from sqlalchemy.ext.asyncio import AsyncSession
from sqlalchemy import select
from app.database import get_db
from app.models.user import User
from app.services.auth import decode_token
oauth2_scheme = OAuth2PasswordBearer(tokenUrl="/api/auth/login")
async def get_current_user(
token: str = Depends(oauth2_scheme),
db: AsyncSession = Depends(get_db),
) -> User:
credentials_exception = HTTPException(
status_code=status.HTTP_401_UNAUTHORIZED,
detail="Could not validate credentials",
headers={"WWW-Authenticate": "Bearer"},
)
payload = decode_token(token)
if payload is None:
raise credentials_exception
user_id_str: str | None = payload.get("sub")
if user_id_str is None:
raise credentials_exception
try:
user_id = int(user_id_str)
except (ValueError, TypeError):
raise credentials_exception
result = await db.execute(select(User).where(User.id == user_id))
user = result.scalar_one_or_none()
if user is None:
raise credentials_exception
if not user.is_active:
raise HTTPException(
status_code=status.HTTP_403_FORBIDDEN,
detail="Inactive user",
)
return user
async def get_current_admin(
current_user: User = Depends(get_current_user),
) -> User:
if current_user.role != "admin":
raise HTTPException(
status_code=status.HTTP_403_FORBIDDEN,
detail="Admin access required",
)
return current_user