Files
interactive-story/backend/app/routers/settings.py
T
parththakkar106andClaude Opus 4.8 4772171b6c Phase 9: production hardening
Config via env, abuse/resource limits, and production serving so the app
is safe to expose publicly:

- Fail-fast on missing SECRET_KEY when MULTI_USER=true
- quickjs per-execution time/memory limits (while(true) can't hang server)
- Per-user/per-IP rate limiting on turn/script/auth endpoints
- Request body size limit + per-user row caps
- Security headers (CSP, X-Frame-Options, nosniff, referrer-policy) incl. SSE
- Debug router 403 and /docs disabled in multi-user mode
- DATABASE_URL support (defaults to Neon Postgres) alongside SQLite
- Documented all env vars in backend/.env.example

Verified locally via uvicorn (MULTI_USER=1, SQLite); see plan/09-phase-hardening.md.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017e6tQuojBLYPetUfmhit4X
2026-07-07 12:30:06 +05:30

97 lines
3.5 KiB
Python

import httpx
from fastapi import APIRouter, Depends, Request
from sqlalchemy.orm import Session
from .. import auth, limits, models, schemas, security
from ..database import get_db
router = APIRouter(prefix="/api/settings", tags=["settings"])
def get_settings(db: Session, user: models.User) -> models.Settings:
"""Per-user settings row, created on first access (Phase 8: settings —
endpoint, key, models, memory config — are per user, not global)."""
settings = (
db.query(models.Settings).filter(models.Settings.user_id == user.id).first()
)
if settings is None:
settings = models.Settings(user_id=user.id)
db.add(settings)
db.commit()
return settings
@router.get("", response_model=schemas.SettingsOut)
def read_settings(
db: Session = Depends(get_db),
user: models.User = Depends(auth.get_current_user),
):
return get_settings(db, user)
@router.put("", response_model=schemas.SettingsOut)
def update_settings(
payload: schemas.SettingsUpdate,
db: Session = Depends(get_db),
user: models.User = Depends(auth.get_current_user),
):
settings = get_settings(db, user)
fields = payload.model_dump(exclude_unset=True)
# Write-only API key: absent = unchanged, "" = cleared, else encrypted.
if "api_key" in fields:
fields["api_key"] = security.encrypt_secret(fields["api_key"].strip())
embedding_model_changed = (
"embedding_model" in fields
and fields["embedding_model"] != settings.embedding_model
)
for field, value in fields.items():
setattr(settings, field, value)
if embedding_model_changed:
# Vectors from the old model have a different dimensionality/space;
# clear them so the post-turn task re-embeds with the new model.
# (This user's adventures only — settings are per-user now.)
owned = (
db.query(models.Adventure.id)
.filter(models.Adventure.user_id == user.id)
.scalar_subquery()
)
db.query(models.Memory).filter(models.Memory.adventure_id.in_(owned)).update(
{"embedding": None}, synchronize_session=False
)
db.commit()
return settings
@router.post("/test")
async def test_connection(
request: Request,
db: Session = Depends(get_db),
user: models.User = Depends(auth.get_current_user),
):
"""Hit the endpoint's /models listing as a cheap connectivity check.
Tests whatever the turn engine would actually use — including the shared
demo endpoint when the user has no key of their own."""
limits.rate_limit("connection-test", request, user)
settings = get_settings(db, user)
cfg = auth.resolve_provider_config(settings)
url = cfg.endpoint_url.rstrip("/") + "/models"
headers = {}
if cfg.api_key:
headers["Authorization"] = f"Bearer {cfg.api_key}"
try:
async with httpx.AsyncClient(timeout=10) as client:
resp = await client.get(url, headers=headers)
except httpx.HTTPError as exc:
return {"ok": False, "detail": f"Connection failed: {exc}"}
if resp.status_code != 200:
return {"ok": False, "detail": f"HTTP {resp.status_code}: {resp.text[:300]}"}
models_available: list[str] = []
try:
data = resp.json()
models_available = [m.get("id", "?") for m in data.get("data", [])]
except (ValueError, AttributeError, TypeError):
pass # non-JSON or unexpected shape — connectivity is still confirmed
return {"ok": True, "models": models_available}