55 lines
1.9 KiB
Python
55 lines
1.9 KiB
Python
from fastapi import Depends, HTTPException, status
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from fastapi.security import OAuth2PasswordBearer
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from jose import JWTError
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from sqlalchemy.orm import Session
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from app.auth.security import decode_token
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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/v1/auth/login")
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ROLES = {"admin": 4, "accountant": 3, "user": 2, "viewer": 1}
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def _get_current_user(token: str, db: Session) -> User:
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credentials_exc = 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 = decode_token(token)
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if payload.get("type") != "access":
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raise credentials_exc
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user_id = int(payload["sub"])
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except (JWTError, KeyError, ValueError):
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raise credentials_exc
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user = db.get(User, user_id)
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if not user or not user.is_active:
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raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="User inactive or not found")
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return user
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def get_current_user(token: str = Depends(oauth2_scheme), db: Session = Depends(get_db)) -> User:
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return _get_current_user(token, db)
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def require_role(minimum_role: str):
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"""Dependency factory — blocks users whose role rank is below minimum_role."""
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min_rank = ROLES[minimum_role]
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def _check(current_user: User = Depends(get_current_user)) -> User:
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user_rank = ROLES.get(current_user.role.name, 0)
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if user_rank < min_rank:
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raise HTTPException(status_code=status.HTTP_403_FORBIDDEN, detail="Insufficient permissions")
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return current_user
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return _check
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require_viewer = Depends(require_role("viewer"))
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require_user = Depends(require_role("user"))
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require_accountant = Depends(require_role("accountant"))
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require_admin = Depends(require_role("admin"))
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