Backend

backend/app/core/websocket_manager.py

@@ -0,0 +1,40 @@
+# backend/app/core/websocket_manager.py
+import asyncio
+
+from fastapi import WebSocket
+
+
+class ConnectionManager:
+    def __init__(self):
+        self.active_connections: set[WebSocket] = set()
+
+    async def connect(self, websocket: WebSocket):
+        await websocket.accept()
+        self.active_connections.add(websocket)
+
+    def disconnect(self, websocket: WebSocket):
+        self.active_connections.discard(websocket)
+
+    async def broadcast(self, message: dict):
+        if not self.active_connections:
+            return
+
+        connections_snapshot = list(self.active_connections)
+
+        async def send_safe(ws: WebSocket):
+            try:
+                await ws.send_json(message)
+            except Exception:
+                self.disconnect(ws)
+
+        await asyncio.gather(*(send_safe(ws) for ws in connections_snapshot))
+
+
+manager = ConnectionManager()
+
+
+async def send_ws_update(id: str):
+    await asyncio.gather(
+        manager.broadcast({"type": "dashboard_update"}),
+        manager.broadcast({"type": "tournament_update", "id": id}),
+    )