eksplicit mapping af envs

backend/app/services/ws_manager.py

@@ -0,0 +1,25 @@
+import json
+
+from fastapi import WebSocket
+
+
+class ConnectionManager:
+    """Manages active WebSocket connections keyed by BLE token."""
+
+    def __init__(self) -> None:
+        self._connections: dict[str, WebSocket] = {}
+
+    async def connect(self, token: str, websocket: WebSocket) -> None:
+        await websocket.accept()
+        self._connections[token] = websocket
+
+    def disconnect(self, token: str) -> None:
+        self._connections.pop(token, None)
+
+    async def send(self, token: str, message: dict) -> None:
+        websocket = self._connections.get(token)
+        if websocket is not None:
+            await websocket.send_text(json.dumps(message))
+
+
+manager = ConnectionManager()