Rework radar system

python_app/webui/routes.py

@@ -99,6 +99,13 @@ async def post_remove_last(request: Request) -> dict:
     return controller.status()
 
 
+@router.post("/api/clear_history")
+async def post_clear_history(request: Request) -> dict:
+    controller = _controller(request)
+    await _run_action(controller.clear_history)
+    return controller.status()
+
+
 @router.get("/api/configs")
 async def get_configs(request: Request) -> dict:
     return {"names": _controller(request).list_configs()}
@@ -157,18 +164,14 @@ async def ws(websocket: WebSocket) -> None:
     """Stream frames and status to one client until it disconnects."""
     await websocket.accept()
     broadcaster: RingBroadcaster = websocket.app.state.broadcaster
-    queue: asyncio.Queue[dict] = asyncio.Queue(maxsize=1)
-    broadcaster.register(queue)
+    client = broadcaster.register()
     logger.info("Web UI client connected")
     try:
-        frame = await asyncio.to_thread(websocket.app.state.controller.peek_frame)
-        if frame is not None:
-            await websocket.send_json(frame)
         while True:
-            await websocket.send_json(await queue.get())
+            await websocket.send_json(await client.get())
     except WebSocketDisconnect:
         logger.info("Web UI client disconnected")
     finally:
-        broadcaster.unregister(queue)
+        broadcaster.unregister(client)
         with contextlib.suppress(Exception):
             await websocket.close()