MemberCount: Also add to server tooltip; refactor code

src/plugins/memberCount/OnlineMemberCountStore.ts

@@ -0,0 +1,52 @@
+/*
+ * Vencord, a Discord client mod
+ * Copyright (c) 2024 Vendicated and contributors
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+import { proxyLazy } from "@utils/lazy";
+import { sleep } from "@utils/misc";
+import { Queue } from "@utils/Queue";
+import { Flux, FluxDispatcher, GuildChannelStore, PrivateChannelsStore } from "@webpack/common";
+
+export const OnlineMemberCountStore = proxyLazy(() => {
+    const preloadQueue = new Queue();
+
+    const onlineMemberMap = new Map<string, number>();
+
+    class OnlineMemberCountStore extends Flux.Store {
+        getCount(guildId: string) {
+            return onlineMemberMap.get(guildId);
+        }
+
+        async _ensureCount(guildId: string) {
+            if (onlineMemberMap.has(guildId)) return;
+
+            await PrivateChannelsStore.preload(guildId, GuildChannelStore.getDefaultChannel(guildId).id);
+        }
+
+        ensureCount(guildId: string) {
+            if (onlineMemberMap.has(guildId)) return;
+
+            preloadQueue.push(() =>
+                this._ensureCount(guildId)
+                    .then(
+                        () => sleep(200),
+                        () => sleep(200)
+                    )
+            );
+        }
+    }
+
+    return new OnlineMemberCountStore(FluxDispatcher, {
+        GUILD_MEMBER_LIST_UPDATE({ guildId, groups }: { guildId: string, groups: { count: number; id: string; }[]; }) {
+            onlineMemberMap.set(
+                guildId,
+                groups.reduce((total, curr) => total + (curr.id === "offline" ? 0 : curr.count), 0)
+            );
+        },
+        ONLINE_GUILD_MEMBER_COUNT_UPDATE({ guildId, count }) {
+            onlineMemberMap.set(guildId, count);
+        }
+    });
+});