Update app.py

app.py

@@ -253,9 +253,9 @@ async def get_metrics():
     return metrics
 
 # ---------------- Health probe (HF Spaces watchdog) -----------------
-@app.get("/")
+@app.get("/api/health")
 def health_check():
-    """Health check with detailed status"""
+    """Health check endpoint - moved to /api/health"""
     return {
         "status": "ok",
         "version": "2.0.0",
@@ -268,34 +268,59 @@ def health_check():
 async def conversation_websocket(websocket: WebSocket, session_id: str):
     await websocket_endpoint(websocket, session_id)
     
-# ---------------- Serve Angular UI if exists ------------------------
-static_dir = Path(__file__).parent / "static"
-if static_dir.exists():
-    log_info("🎨 Serving Angular UI from /static directory")
+# ---------------- Serve static files ------------------------------------
+# UI static files (production build)
+static_path = Path(__file__).parent / "static"
+if static_path.exists():
+    app.mount("/static", StaticFiles(directory=str(static_path)), name="static")
     
-    # Mount static files with custom handler for Angular routing
-    @app.get("/{path:path}")
-    async def serve_angular(path: str):
-        # API routes should not be handled here
-        if path.startswith("api/"):
-            return {"error": "Not found"}, 404
-            
-        # Try to serve the exact file first
-        file_path = static_dir / path
-        if file_path.is_file():
-            return FileResponse(file_path)
+    # Serve index.html for all non-API routes (SPA support)
+    @app.get("/", response_class=FileResponse)
+    async def serve_index():
+        """Serve Angular app"""
+        index_path = static_path / "index.html"
+        if index_path.exists():
+            return FileResponse(str(index_path))
+        else:
+            return JSONResponse(
+                status_code=404,
+                content={"error": "UI not found. Please build the Angular app first."}
+            )
+    
+    # Catch-all route for SPA
+    @app.get("/{full_path:path}")
+    async def serve_spa(full_path: str):
+        """Serve Angular app for all routes"""
+        # Skip API routes
+        if full_path.startswith("api/"):
+            return JSONResponse(status_code=404, content={"error": "Not found"})
         
-        # For Angular routes, always serve index.html
-        index_path = static_dir / "index.html"
+        # Serve static files
+        file_path = static_path / full_path
+        if file_path.exists() and file_path.is_file():
+            return FileResponse(str(file_path))
+        
+        # Fallback to index.html for SPA routing
+        index_path = static_path / "index.html"
         if index_path.exists():
-            return FileResponse(index_path)
+            return FileResponse(str(index_path))
         
-        return {"error": "Not found"}, 404
-    
-    # Mount static files for assets
-    app.mount("/", StaticFiles(directory=str(static_dir), html=True), name="static")
+        return JSONResponse(status_code=404, content={"error": "Not found"})
 else:
-    log_info("⚠️ No UI found. Run 'cd flare-ui && npm run build' to build the UI.")
+    log_warning(f"⚠️  Static files directory not found at {static_path}")
+    log_warning("   Run 'npm run build' in flare-ui directory to build the UI")
+    
+    @app.get("/")
+    async def no_ui():
+        """No UI available"""
+        return JSONResponse(
+            status_code=503,
+            content={
+                "error": "UI not available",
+                "message": "Please build the Angular UI first. Run: cd flare-ui && npm run build",
+                "api_docs": "/docs"
+            }
+        )
 
 if __name__ == "__main__":
     log_info("🌐 Starting Flare backend on port 7860...")