Cheng Zhou
55 lines
1.7 KiB
Python
55 lines
1.7 KiB
Python
from typing import Annotated, AsyncGenerator, Callable, Iterable
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import uuid
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from fastapi import Depends, HTTPException, status
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from pydantic import ValidationError
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from sqlalchemy.ext.asyncio import AsyncSession
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from app.core.security import decode_token, oauth2_scheme
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from app.crud import user as user_crud
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from app.db.session import SessionLocal
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from app.schemas.user import TokenPayload
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async def get_db_session() -> AsyncGenerator[AsyncSession, None]:
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async with SessionLocal() as session:
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yield session
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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_session)],
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):
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payload = decode_token(token)
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try:
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token_data = TokenPayload(**payload)
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except ValidationError as exc:
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raise 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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) from exc
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user = await user_crud.get_by_id(db, uuid.UUID(str(token_data.sub)))
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if not user or not user.is_active:
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raise HTTPException(
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status_code=status.HTTP_401_UNAUTHORIZED,
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detail="Inactive or missing user",
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headers={"WWW-Authenticate": "Bearer"},
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)
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return user
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def require_roles(roles: Iterable[str]) -> Callable:
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roles_set = set(roles)
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async def dependency(current_user=Depends(get_current_user)):
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if current_user.role not in roles_set:
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raise HTTPException(
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status_code=status.HTTP_403_FORBIDDEN,
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detail="Insufficient permissions",
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)
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return current_user
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return dependency
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