Update backend/app/main.py

backend/app/main.py

@@ -1,10 +1,11 @@
 from fastapi import FastAPI
+from fastapi.responses import FileResponse
+from fastapi.staticfiles import StaticFiles
 from fastapi.middleware.cors import CORSMiddleware
+from pathlib import Path
 
 app = FastAPI()
 
-# In HF Spaces, frontend and backend are served from same origin if proxied,
-# but keep CORS permissive for dev.
 app.add_middleware(
     CORSMiddleware,
     allow_origins=["*"],
@@ -13,6 +14,7 @@ app.add_middleware(
     allow_headers=["*"],
 )
 
+# ---- API ----
 @app.get("/api/health")
 def health():
     return {"status": "ok"}
@@ -20,3 +22,17 @@ def health():
 @app.get("/api/hello")
 def hello():
     return {"message": "Hello from FastAPI"}
+
+# ---- Frontend static serving ----
+FRONTEND_DIST = Path(__file__).resolve().parents[2] / "frontend" / "dist"
+INDEX_FILE = FRONTEND_DIST / "index.html"
+
+if FRONTEND_DIST.exists():
+    app.mount("/", StaticFiles(directory=str(FRONTEND_DIST), html=True), name="static")
+
+    # SPA fallback: any non-/api route should return React index.html
+    @app.get("/{full_path:path}")
+    def spa_fallback(full_path: str):
+        if full_path.startswith("api/"):
+            return {"detail": "Not Found"}
+        return FileResponse(str(INDEX_FILE))