56 lines
1.7 KiB
Python
56 lines
1.7 KiB
Python
"""Shared FastAPI dependencies, including JWT-based auth."""
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from typing import Annotated
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from fastapi import Depends, HTTPException, status
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from fastapi.security import OAuth2PasswordBearer
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from jose import JWTError, jwt
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from sqlalchemy import select
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from sqlalchemy.ext.asyncio import AsyncSession
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from app.config import settings
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from app.database import get_db
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from app.models.user import User
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oauth2_scheme = OAuth2PasswordBearer(tokenUrl="/api/auth/login")
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async def get_current_user(
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token: Annotated[str, Depends(oauth2_scheme)],
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db: Annotated[AsyncSession, Depends(get_db)],
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) -> User:
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"""Resolve the JWT bearer token to a User, or raise 401."""
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credentials_exception = HTTPException(
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status_code=status.HTTP_401_UNAUTHORIZED,
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detail="Could not validate credentials",
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headers={"WWW-Authenticate": "Bearer"},
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)
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try:
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payload = jwt.decode(
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token, settings.public_pem, algorithms=[settings.ALGORITHM]
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)
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user_id: str | None = payload.get("sub")
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if user_id is None:
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raise credentials_exception
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except JWTError:
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raise credentials_exception
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try:
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user_id_int = int(user_id)
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except (ValueError, TypeError):
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raise credentials_exception
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result = await db.execute(select(User).where(User.id == user_id_int))
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user = result.scalar_one_or_none()
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if user is None:
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raise credentials_exception
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if not user.is_active:
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raise HTTPException(
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status_code=status.HTTP_403_FORBIDDEN,
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detail="User account is inactive",
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)
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return user
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CurrentUser = Annotated[User, Depends(get_current_user)]
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