Обновление приложения

backend/app/auth/dependencies.py

@@ -0,0 +1,54 @@
+from fastapi import Depends, HTTPException, status
+from fastapi.security import OAuth2PasswordBearer
+from jose import JWTError
+from sqlalchemy.orm import Session
+from app.auth.security import decode_token
+from app.database import get_db
+from app.models.user import User
+
+oauth2_scheme = OAuth2PasswordBearer(tokenUrl="/api/v1/auth/login")
+
+ROLES = {"admin": 4, "accountant": 3, "user": 2, "viewer": 1}
+
+
+def _get_current_user(token: str, db: Session) -> User:
+    credentials_exc = HTTPException(
+        status_code=status.HTTP_401_UNAUTHORIZED,
+        detail="Could not validate credentials",
+        headers={"WWW-Authenticate": "Bearer"},
+    )
+    try:
+        payload = decode_token(token)
+        if payload.get("type") != "access":
+            raise credentials_exc
+        user_id = int(payload["sub"])
+    except (JWTError, KeyError, ValueError):
+        raise credentials_exc
+
+    user = db.get(User, user_id)
+    if not user or not user.is_active:
+        raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="User inactive or not found")
+    return user
+
+
+def get_current_user(token: str = Depends(oauth2_scheme), db: Session = Depends(get_db)) -> User:
+    return _get_current_user(token, db)
+
+
+def require_role(minimum_role: str):
+    """Dependency factory — blocks users whose role rank is below minimum_role."""
+    min_rank = ROLES[minimum_role]
+
+    def _check(current_user: User = Depends(get_current_user)) -> User:
+        user_rank = ROLES.get(current_user.role.name, 0)
+        if user_rank < min_rank:
+            raise HTTPException(status_code=status.HTTP_403_FORBIDDEN, detail="Insufficient permissions")
+        return current_user
+
+    return _check
+
+
+require_viewer = Depends(require_role("viewer"))
+require_user = Depends(require_role("user"))
+require_accountant = Depends(require_role("accountant"))
+require_admin = Depends(require_role("admin"))