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/*
Spacebar: A FOSS re-implementation and extension of the Discord.com backend.
Copyright (C) 2023 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 { WebSocket } from "@spacebar/gateway";
import { emitEvent, Member, PresenceUpdateEvent, Session, SessionsReplace, User, VoiceState, VoiceStateUpdateEvent, distributePresenceUpdate } from "@spacebar/util";
import { randomString } from "@spacebar/api";
export async function Close(this: WebSocket, code: number, reason: Buffer) {
console.log("[WebSocket] closed", code, reason.toString());
if (this.heartbeatTimeout) clearTimeout(this.heartbeatTimeout);
if (this.readyTimeout) clearTimeout(this.readyTimeout);
this.deflate?.close();
this.inflate?.close();
this.removeAllListeners();
if (this.session_id) {
const authSessionId = this.session?.session_id;
const closedAt = Date.now();
setTimeout(async () => {
console.log("Handling presence update after disconnect");
try {
if (authSessionId && this.user_id) {
const s = await Session.findOne({
where: { user_id: this.user_id, session_id: authSessionId },
});
if (s && (s.last_seen?.getTime() ?? 0) <= closedAt) {
console.log("... updating session");
await Session.update({ user_id: this.user_id, session_id: authSessionId }, { status: "offline", activities: [], client_status: {} });
this.session = await Session.findOneOrFail({ where: { session_id: this.session_id } });
console.log("... distributing PRESENCE_UPDATE");
await distributePresenceUpdate(this.user_id, {
event: "PRESENCE_UPDATE",
data: {
user: (await User.findOneOrFail({ where: { id: this.user_id } })).toPublicUser(),
status: this.session!.getPublicStatus(),
client_status: this.session!.client_status,
activities: this.session!.activities,
},
origin: "GATEWAY_CLOSE",
transaction_id: `IDENT_${this.user_id}_${randomString()}`,
} satisfies PresenceUpdateEvent);
console.log("... done!");
} else console.log("... Discarding presence update as the session reactivated");
}
} catch (e) {
console.error("[WebSocket] Close session cleanup failed", code, e);
}
}, 10_000);
const voiceState = await VoiceState.findOne({
where: { user_id: this.user_id },
});
// clear the voice state for this session if user was in voice channel
if (voiceState && voiceState.session_id === this.session_id && voiceState.channel_id) {
const prevGuildId = voiceState.guild_id;
const prevChannelId = voiceState.channel_id;
// @ts-expect-error channel_id is nullable
voiceState.channel_id = null;
// @ts-expect-error guild_id is nullable
voiceState.guild_id = null;
voiceState.self_stream = false;
voiceState.self_video = false;
await voiceState.save();
voiceState.member = await Member.findOneOrFail({
where: {
id: voiceState.user_id,
guild_id: prevGuildId,
},
});
// let the users in previous guild/channel know that user disconnected
await emitEvent({
event: "VOICE_STATE_UPDATE",
data: {
...voiceState.toPublicVoiceState(),
guild_id: prevGuildId, // have to send the previous guild_id because that's what client expects for disconnect messages
member: voiceState.member.toPublicMember(),
},
guild_id: prevGuildId,
channel_id: prevChannelId,
} satisfies VoiceStateUpdateEvent);
}
}
if (this.user_id) {
const sessions = await Session.find({
where: { user_id: this.user_id },
});
await emitEvent({
event: "SESSIONS_REPLACE",
user_id: this.user_id,
data: sessions.map((x) => x.toPrivateGatewayDeviceInfo()),
} as SessionsReplace);
const session = sessions[0] || {
activities: [],
client_status: {},
status: "offline",
};
const user = await User.getPublicUser(this.user_id).catch(() => undefined);
// Special case: dont emit a presence update for deleted users
if (user !== undefined)
await emitEvent({
event: "PRESENCE_UPDATE",
user_id: this.user_id,
data: {
user: user,
activities: session.activities,
client_status: session?.client_status,
status: session.getPublicStatus?.() ?? session.status,
},
} satisfies PresenceUpdateEvent);
}
}
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