Files
MobilityOps/backend/app/api/routers/demo.py
T
NuklearRabbit ffc88e33b4 feat(auth): add server-backed demo sessions
The browser treated sessionStorage as the source of truth for the logged-in
user and never verified or invalidated the server-side session cookie: no
GET /api/v1/demo/session or POST /api/v1/demo/logout endpoint existed, and a
central 401 handler was defined but never wired up.

Add both endpoints; the session-check response is marked Cache-Control:
no-store to avoid the browser serving a stale "authenticated" response right
after logout. AuthProvider now verifies against the server on every mount
(sessionStorage only caches presentation state to avoid a login-screen
flash), subscribes to a central 401 listener on the API client, and
RequireAuth shows a loading state during verification instead of flashing
protected content or the wrong role.
2026-08-02 04:51:54 +02:00

107 lines
3.4 KiB
Python

from __future__ import annotations
import time
import uuid
from fastapi import APIRouter, Depends, Request, Response
from sqlalchemy import select
from sqlalchemy.orm import Session
from app.api.deps import get_current_user, get_db, require_operations_manager
from app.core.config import get_settings
from app.core.security import SessionPayload, create_session_token, read_session_token
from app.models.user import User
from app.schemas import CurrentUser, DemoLoginRequest
from app.seed_loader import reset_and_seed
from app.services.audit import record_audit_event
router = APIRouter(prefix="/api/v1/demo", tags=["demo"])
settings = get_settings()
@router.post("/login", response_model=CurrentUser)
def demo_login(
body: DemoLoginRequest, response: Response, db: Session = Depends(get_db)
) -> CurrentUser:
public_ref = "USR-OPS" if body.role == "operations_manager" else "USR-EMP"
user = db.scalar(select(User).where(User.public_ref == public_ref))
if user is None:
raise LookupError("Demo users are missing; run the seed loader first.")
token = create_session_token(
SessionPayload(
user_id=str(user.id),
public_ref=user.public_ref,
role=user.role,
display_name=user.display_name,
issued_at=int(time.time()),
)
)
response.set_cookie(
settings.session_cookie_name,
token,
httponly=True,
samesite="lax",
secure=settings.session_cookie_secure,
max_age=settings.session_ttl_seconds,
)
record_audit_event(
db,
actor_type="user",
actor_id=user.id,
actor_label=user.display_name,
action="demo_login",
entity_type="user",
entity_id=user.id,
)
db.commit()
return CurrentUser(public_ref=user.public_ref, display_name=user.display_name, role=body.role)
@router.get("/session", response_model=CurrentUser)
def get_session(
response: Response, user: CurrentUser = Depends(get_current_user)
) -> CurrentUser:
# Never let the browser (or an intermediary) cache an authentication check — a stale
# cached 200 here would keep showing a logged-out browser as authenticated.
response.headers["Cache-Control"] = "no-store"
return user
@router.post("/logout")
def demo_logout(request: Request, response: Response, db: Session = Depends(get_db)) -> dict:
token = request.cookies.get(settings.session_cookie_name)
payload = read_session_token(token) if token else None
if payload is not None:
record_audit_event(
db,
actor_type="user",
actor_id=uuid.UUID(payload.user_id),
actor_label=payload.display_name,
action="demo_logout",
entity_type="user",
)
db.commit()
response.delete_cookie(settings.session_cookie_name)
return {"status": "logged_out"}
@router.post("/reset")
def demo_reset(
response: Response,
db: Session = Depends(get_db),
user: CurrentUser = Depends(require_operations_manager),
) -> dict:
result = reset_and_seed(db)
record_audit_event(
db,
actor_type="user",
actor_label=user.display_name,
action="demo_reset",
entity_type="system",
metadata={"counts": result.counts},
)
db.commit()
response.delete_cookie(settings.session_cookie_name)
return {"status": "reset", "counts": result.counts}