Initial commit: AI Dungeon clone (FastAPI backend + React frontend)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KFsGHju9szibJJa2YJcdbg

backend/app/routers/settings.py

@@ -0,0 +1,57 @@
+import httpx
+from fastapi import APIRouter, Depends
+from sqlalchemy.orm import Session
+
+from .. import models, schemas
+from ..database import get_db
+
+router = APIRouter(prefix="/api/settings", tags=["settings"])
+
+
+def get_settings(db: Session) -> models.Settings:
+    settings = db.get(models.Settings, 1)
+    if settings is None:
+        settings = models.Settings(id=1)
+        db.add(settings)
+        db.commit()
+    return settings
+
+
+@router.get("", response_model=schemas.SettingsOut)
+def read_settings(db: Session = Depends(get_db)):
+    return get_settings(db)
+
+
+@router.put("", response_model=schemas.SettingsOut)
+def update_settings(payload: schemas.SettingsUpdate, db: Session = Depends(get_db)):
+    settings = get_settings(db)
+    for field, value in payload.model_dump(exclude_unset=True).items():
+        setattr(settings, field, value)
+    db.commit()
+    return settings
+
+
+@router.post("/test")
+async def test_connection(db: Session = Depends(get_db)):
+    """Hit the endpoint's /models listing as a cheap connectivity check."""
+    settings = get_settings(db)
+    url = settings.endpoint_url.rstrip("/") + "/models"
+    headers = {}
+    if settings.api_key:
+        headers["Authorization"] = f"Bearer {settings.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:
+        pass
+    return {"ok": True, "models": models_available}