refactored frontend events for code conciseness

src/events/user-status.ts

@@ -1,27 +1,16 @@
 import { writable } from "svelte/store";
 import { events, type UserStatusPayload } from "$lib/bindings";
-import {
-  createListenersSubscription,
-  removeFromStore,
-  setupHmrCleanup,
-} from "./listener-utils";
+import { createEventSource, removeFromStore } from "./listener-utils";
 
 export const friendsPresenceStates = writable<
   Record<string, UserStatusPayload>
 >({});
 export const currentPresenceState = writable<UserStatusPayload | null>(null);
 
-const subscription = createListenersSubscription();
-
-/**
- * Starts listening for user status changes and friend status updates.
- */
-export async function startUserStatus() {
-  if (subscription.isListening()) return;
-
-  try {
-    const unlistenStatus = await events.friendUserStatusChanged.listen(
-      (event) => {
+export const { start: startUserStatus, stop: stopUserStatus } =
+  createEventSource(async (addEventListener) => {
+    addEventListener(
+      await events.friendUserStatusChanged.listen((event) => {
         const { userId, status } = event.payload;
 
         const hasValidName =
@@ -35,36 +24,21 @@ export async function startUserStatus() {
           ...current,
           [userId]: status,
         }));
-      },
+      }),
     );
-    subscription.addUnlisten(unlistenStatus);
 
-    const unlistenUserStatusChanged = await events.userStatusChanged.listen(
-      (event) => {
+    addEventListener(
+      await events.userStatusChanged.listen((event) => {
         currentPresenceState.set(event.payload);
-      },
+      }),
     );
-    subscription.addUnlisten(unlistenUserStatusChanged);
 
-    const unlistenFriendDisconnected = await events.friendDisconnected.listen(
-      (event) => {
+    addEventListener(
+      await events.friendDisconnected.listen((event) => {
         const { userId } = event.payload;
         friendsPresenceStates.update((current) =>
           removeFromStore(current, userId),
         );
-      },
+      }),
     );
-    subscription.addUnlisten(unlistenFriendDisconnected);
-
-    subscription.setListening(true);
-  } catch (error) {
-    console.error("Failed to initialize user status listeners", error);
-    throw error;
-  }
-}
-
-export function stopUserStatus() {
-  subscription.stop();
-}
-
-setupHmrCleanup(stopUserStatus);
+  });