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/*
Spacebar: A FOSS re-implementation and extension of the Discord.com backend.
Copyright (C) 2026 Spacebar and Spacebar Contributors
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published
by the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
import { Session, VoiceState } from "@spacebar/database";
import { TimeSpan } from "@spacebar/extensions";
import { Event } from "@spacebar/util";
import { WebSocket } from "./WebSocket";
import { OPCODES } from "./Constants";
import { Send } from "./Send";
export function parseStreamKey(streamKey: string): {
type: "guild" | "call";
channelId: string;
guildId?: string;
userId: string;
} {
const streamKeyArray = streamKey.split(":");
const type = streamKeyArray.shift();
if (type !== "guild" && type !== "call") {
throw new Error(`Invalid stream key type: ${type}`);
}
if ((type === "guild" && streamKeyArray.length < 3) || (type === "call" && streamKeyArray.length < 2)) throw new Error(`Invalid stream key: ${streamKey}`); // invalid stream key
let guildId: string | undefined;
if (type === "guild") {
guildId = streamKeyArray.shift();
}
const channelId = streamKeyArray.shift();
const userId = streamKeyArray.shift();
if (!channelId || !userId) {
throw new Error(`Invalid stream key: ${streamKey}`);
}
return { type, channelId, guildId, userId };
}
export function generateStreamKey(type: "guild" | "call", guildId: string | undefined, channelId: string, userId: string): string {
const streamKey = `${type}${type === "guild" ? `:${guildId}` : ""}:${channelId}:${userId}`;
return streamKey;
}
// Temporary cleanup function until shutdown cleanup function is fixed.
// Currently when server is shut down the voice states are not cleared
// TODO: remove this when Server.stop() is fixed so that it waits for all websocket connections to run their
// respective Close event listener function for session cleanup
export async function cleanupOnStartup(): Promise<void> {
// TODO: how is this different from clearing the table?
//await VoiceState.update(
// {},
// {
// // @ts-expect-error channel_id is nullable
// channel_id: null,
// // @ts-expect-error guild_id is nullable
// guild_id: null,
// self_stream: false,
// self_video: false,
// },
//);
console.log("[Gateway] Starting async voice state wipe...");
VoiceState.clear()
.then(() => console.log("[Gateway] Successfully cleaned voice states"))
.catch((e) => console.error("[Gateway] Error cleaning voice states on startup:", e));
console.log("[Gateway] Starting async presence expiry...");
expireOldPresenceStates()
.then(() => console.log("[Gateway] Successfully cleaned expired presence states"))
.catch((e) => console.error("[Gateway] Error cleaning expired presence states on startup:", e));
}
async function expireOldPresenceStates() {
for await (const session of await Session.createQueryBuilder("session").where("last_seen >= '2000/01/01' AND status != 'offline'").select().stream()) {
// session object has all fields prefixed with `session_`... thanks typeorm
if (TimeSpan.fromDates((session.session_last_seen as Date).getTime(), new Date().getTime()).totalMinutes > 30) {
console.log(`[Gateway/util/Utils.ts] Expiring presence for session ${session.session_session_id} last seen at ${session.session_last_seen}`);
await Session.update({ session_id: session.session_session_id }, { status: "offline" });
}
}
}
export async function handleOffloadedGatewayRequest(socket: WebSocket, url: string, body: unknown) {
// TODO: async json object streaming
const resp = await fetch(url, {
body: JSON.stringify(body),
method: "POST",
headers: {
Authorization: `Bearer ${socket.accessToken}`,
// because the session may not have an id in the token!
"X-Session-Id": socket.session_id,
"Content-Type": "application/json",
},
});
if (!resp.ok) {
const text = await resp.text();
console.error(`[Gateway] Offloaded request to ${url} failed with status ${resp.status}: ${text}`);
if (resp.status === 415 || resp.status === 400) console.log(typeof body, body);
throw new Error(`Offloaded request failed with status ${resp.status}: ${text}`);
}
const data = ((await resp.json()) as Event[]).toReversed();
while (data.length > 0) {
const event = data.pop()!;
if (process.env.WS_VERBOSE) console.log(`[Gateway] Received offloaded event: ${JSON.stringify(event)}`);
await Send(socket, {
op: OPCODES.Dispatch,
s: socket.sequence++,
t: event.event,
d: event.data,
});
}
}
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