implement intercity booking management and booking window websocket integration

apps/edr-freight-web/backoffice/src/features/bookingWindows/useBookingWindowSocket.ts

@@ -0,0 +1,55 @@
+import {
+  BOOKING_WINDOW_WS_EVENTS,
+  BOOKING_WINDOW_WS_NAMESPACE,
+  type BookingWindowPhaseEvent,
+} from "@edr/types";
+import { useQueryClient } from "@tanstack/react-query";
+import { useEffect } from "react";
+import { io } from "socket.io-client";
+
+import { API_BASE_URL } from "@/constants/apiConfig";
+import { AUTH_TOKEN_COOKIE, getCookie } from "@/auth/cookies";
+import { QUERY_KEYS } from "@/constants/QUERY_KEYS";
+
+// The socket namespace lives at the server root, not under the `/api` REST
+// prefix — strip a trailing `/api` if the base URL carries one.
+const SOCKET_ORIGIN = String(API_BASE_URL ?? "").replace(/\/api\/?$/, "");
+
+/**
+ * Subscribes to live booking-window pushes for staff. Every phase transition
+ * the window engine applies invalidates the GL windows carousel and the batch
+ * board, so both flip the moment the backend does — polling stays only as a
+ * fallback.
+ */
+export function useBookingWindowSocket(enabled: boolean = true) {
+  const qc = useQueryClient();
+
+  useEffect(() => {
+    if (!enabled) return;
+    const token = getCookie(AUTH_TOKEN_COOKIE);
+    if (!token) return;
+
+    const socket = io(`${SOCKET_ORIGIN}/${BOOKING_WINDOW_WS_NAMESPACE}`, {
+      auth: { token },
+      transports: ["websocket"],
+      withCredentials: true,
+    });
+
+    socket.on(
+      BOOKING_WINDOW_WS_EVENTS.PHASE,
+      (_event: BookingWindowPhaseEvent) => {
+        qc.invalidateQueries({
+          queryKey: ["train-scheduling", "all-booking-windows"],
+        });
+        qc.invalidateQueries({
+          queryKey: QUERY_KEYS.TRAIN_SCHEDULING.batchBoard(),
+        });
+      },
+    );
+
+    return () => {
+      socket.off();
+      socket.disconnect();
+    };
+  }, [enabled, qc]);
+}