diff --git a/gateway/src/opcodes/LazyRequest.ts b/gateway/src/opcodes/LazyRequest.ts
new file mode 100644
index 00000000..b1d553b9
--- /dev/null
+++ b/gateway/src/opcodes/LazyRequest.ts
@@ -0,0 +1,105 @@
+// @ts-nocheck WIP
+import {
+ db,
+ getPermission,
+ MemberModel,
+ MongooseCache,
+ PublicUserProjection,
+ RoleModel,
+ toObject,
+} from "@fosscord/server-util";
+import { LazyRequest } from "../schema/LazyRequest";
+import { OPCODES, Payload } from "../util/Constants";
+import { Send } from "../util/Send";
+import WebSocket from "../util/WebSocket";
+import { check } from "./instanceOf";
+
+// TODO: check permission and only show roles/members that have access to this channel
+// TODO: config: if want to list all members (even those who are offline) sorted by role, or just those who are online
+
+export async function onLazyRequest(this: WebSocket, { d }: Payload) {
+ // TODO: check data
+ check.call(this, LazyRequest, d);
+ const { guild_id, typing, channels, activities } = d as LazyRequest;
+
+ const permissions = await getPermission(this.user_id, guild_id);
+ permissions.hasThrow("VIEW_CHANNEL");
+
+ // MongoDB query to retrieve all hoisted roles and join them with the members and users collection
+ const roles = toObject(
+ await db
+ .collection("roles")
+ .aggregate([
+ {
+ $match: {
+ guild_id,
+ // hoist: true // TODO: also match @everyone role
+ },
+ },
+ { $sort: { position: 1 } },
+ {
+ $lookup: {
+ from: "members",
+ let: { id: "$id" },
+ pipeline: [
+ { $match: { $expr: { $in: ["$$id", "$roles"] } } },
+ { $limit: 100 },
+ {
+ $lookup: {
+ from: "users",
+ let: { user_id: "$id" },
+ pipeline: [
+ { $match: { $expr: { $eq: ["$id", "$$user_id"] } } },
+ { $project: PublicUserProjection },
+ ],
+ as: "user",
+ },
+ },
+ {
+ $unwind: "$user",
+ },
+ ],
+ as: "members",
+ },
+ },
+ ])
+ .toArray()
+ );
+
+ const groups = roles.map((x) => ({ id: x.id === guild_id ? "online" : x.id, count: x.members.length }));
+ const member_count = roles.reduce((a, b) => b.members.length + a, 0);
+ const items = [];
+
+ for (const role of roles) {
+ items.push({
+ group: {
+ count: role.members.length,
+ id: role.id === guild_id ? "online" : role.name,
+ },
+ });
+ for (const member of role.members) {
+ member.roles.remove(guild_id);
+ items.push({ member });
+ }
+ }
+
+ return Send(this, {
+ op: OPCODES.Dispatch,
+ s: this.sequence++,
+ t: "GUILD_MEMBER_LIST_UPDATE",
+ d: {
+ ops: [
+ {
+ range: [0, 99],
+ op: "SYNC",
+ items,
+ },
+ ],
+ online_count: member_count, // TODO count online count
+ member_count,
+ id: "everyone",
+ guild_id,
+ groups,
+ },
+ });
+}
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