Integrate LiveKit SFU and harden booking workflow

This commit is contained in:
2026-09-16 19:38:28 +02:00
parent f1cd07b3ad
commit d0864e2911
55 changed files with 1648 additions and 1234 deletions
+6
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@@ -11,6 +11,7 @@ export type AdminCalendarItem = {
endTime: string;
status: string; // booking status, or "public" for a standalone Event
appointmentType?: "onsite" | "online";
callEventSlug?: string;
href: string;
};
@@ -61,6 +62,10 @@ export async function getAdminCalendarItems(
endTime: b.endTime,
status: b.status,
appointmentType: b.appointmentType,
callEventSlug:
b.appointmentType === "online" && typeof b.linkedEvent === "object" && b.linkedEvent?.slug
? b.linkedEvent.slug
: undefined,
href: `/admin/collections/booking-requests/${b.id}`,
};
});
@@ -74,6 +79,7 @@ export async function getAdminCalendarItems(
endTime: e.endTime ?? e.date,
status: "public",
appointmentType: e.isOnline ? "online" : "onsite",
callEventSlug: e.isOnline && e.slug ? e.slug : undefined,
href: `/admin/collections/events/${e.id}`,
}));
+23
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@@ -0,0 +1,23 @@
import type { BookingRequest, Event, MeetingSetting } from "@/payload-types";
import { canJoinMeeting, combineDateAndTime, getMeetingStatus, type MeetingStatus } from "@/lib/meeting/status";
export function getBookingMeetingStatus(booking: BookingRequest, settings: MeetingSetting): MeetingStatus | null {
const event = typeof booking.linkedEvent === "object" ? (booking.linkedEvent as Event) : null;
if (booking.status !== "confirmed" || booking.appointmentType !== "online" || !event?.isOnline) return null;
const start = combineDateAndTime(booking.date, booking.startTime);
const end = booking.endTime
? combineDateAndTime(booking.date, booking.endTime)
: new Date(start.getTime() + 60 * 60_000);
return getMeetingStatus({
start,
end,
joinWindowMinutes: settings.participantJoinWindowMinutes,
closeAfterMinutes: settings.meetingCloseAfterMinutes,
});
}
export function canJoinBookingMeeting(booking: BookingRequest, settings: MeetingSetting): boolean {
const status = getBookingMeetingStatus(booking, settings);
return status !== null && canJoinMeeting(status);
}
+1 -34
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@@ -1,10 +1,9 @@
import type { Payload } from "payload";
import { WEEKDAYS } from "@/collections/Availability";
import { berlinParts, berlinWallTimeToUTC, type CalendarDate } from "@/lib/calendar/timezone";
export type TimeSlot = { start: Date; end: Date };
const BERLIN_TZ = "Europe/Berlin";
const WEEKDAY_BY_INDEX = [
"sunday",
"monday",
@@ -15,44 +14,12 @@ const WEEKDAY_BY_INDEX = [
"saturday",
] as const;
type CalendarDate = { year: number; month: number; day: number };
// Availability/AvailabilityOverrides times are entered by the admin in their
// browser (Europe/Berlin) and stored as UTC instants. All wall-clock reads
// and writes here go through Intl's Berlin timezone data (not local Date
// accessors, and not manual UTC+1/+2 arithmetic), so the server process's
// own timezone (this app runs in UTC in production) never leaks into the
// computed availability — see lib/calendar/timezone.ts for the same pattern.
function berlinParts(date: Date): CalendarDate & { hour: number; minute: number } {
const parts = new Intl.DateTimeFormat("en-US", {
timeZone: BERLIN_TZ,
year: "numeric",
month: "2-digit",
day: "2-digit",
hour: "2-digit",
minute: "2-digit",
hourCycle: "h23",
}).formatToParts(date);
const get = (type: string) => Number(parts.find((p) => p.type === type)?.value ?? "0");
return { year: get("year"), month: get("month"), day: get("day"), hour: get("hour"), minute: get("minute") };
}
function berlinOffsetMinutes(date: Date): number {
const tzName = new Intl.DateTimeFormat("en-US", { timeZone: BERLIN_TZ, timeZoneName: "shortOffset" })
.formatToParts(date)
.find((p) => p.type === "timeZoneName")?.value ?? "GMT+1";
const match = tzName.match(/GMT([+-]\d+)(?::(\d+))?/);
const hours = match ? Number(match[1]) : 1;
const minutes = match?.[2] ? Number(match[2]) : 0;
return hours * 60 + (hours < 0 ? -minutes : minutes);
}
/** Converts a Europe/Berlin wall-clock date+time into the UTC instant it represents. */
function berlinWallTimeToUTC(date: CalendarDate, hour: number, minute: number): Date {
const guess = Date.UTC(date.year, date.month - 1, date.day, hour, minute);
return new Date(guess - berlinOffsetMinutes(new Date(guess)) * 60_000);
}
function dateKey(date: Date): string {
const { year, month, day } = berlinParts(date);
return `${year}-${String(month).padStart(2, "0")}-${String(day).padStart(2, "0")}`;
+54
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@@ -1,5 +1,59 @@
const BERLIN_TZ = "Europe/Berlin";
export type CalendarDate = { year: number; month: number; day: number };
export function berlinDateKey(date: Date): string {
const { year, month, day } = berlinParts(date);
return `${year}-${String(month).padStart(2, "0")}-${String(day).padStart(2, "0")}`;
}
export function formatBerlinDate(date: Date, options: Intl.DateTimeFormatOptions = {}): string {
return new Intl.DateTimeFormat("de-DE", { ...options, timeZone: BERLIN_TZ }).format(date);
}
export function formatBerlinTime(date: Date, options: Intl.DateTimeFormatOptions = {}): string {
return new Intl.DateTimeFormat("de-DE", { ...options, timeZone: BERLIN_TZ }).format(date);
}
export function berlinParts(date: Date): CalendarDate & { hour: number; minute: number } {
const parts = new Intl.DateTimeFormat("en-US", {
timeZone: BERLIN_TZ,
year: "numeric",
month: "2-digit",
day: "2-digit",
hour: "2-digit",
minute: "2-digit",
hourCycle: "h23",
}).formatToParts(date);
const get = (type: string) => Number(parts.find((part) => part.type === type)?.value ?? "0");
return { year: get("year"), month: get("month"), day: get("day"), hour: get("hour"), minute: get("minute") };
}
export function berlinOffsetMinutes(date: Date): number {
const tzName = new Intl.DateTimeFormat("en-US", { timeZone: BERLIN_TZ, timeZoneName: "shortOffset" })
.formatToParts(date)
.find((part) => part.type === "timeZoneName")?.value ?? "GMT+1";
const match = tzName.match(/GMT([+-]\d+)(?::(\d+))?/);
const hours = match ? Number(match[1]) : 1;
const minutes = match?.[2] ? Number(match[2]) : 0;
return hours * 60 + (hours < 0 ? -minutes : minutes);
}
/** Converts a Berlin wall-clock date/time into the UTC instant it represents. */
export function berlinWallTimeToUTC(date: CalendarDate, hour: number, minute: number): Date {
const guess = Date.UTC(date.year, date.month - 1, date.day, hour, minute);
return new Date(guess - berlinOffsetMinutes(new Date(guess)) * 60_000);
}
export function berlinDayBounds(date: Date): { key: string; start: Date; end: Date } {
const current = berlinParts(date);
const nextCalendarDay = new Date(Date.UTC(current.year, current.month - 1, current.day + 1));
const next = berlinParts(nextCalendarDay);
const start = berlinWallTimeToUTC(current, 0, 0);
const nextStart = berlinWallTimeToUTC(next, 0, 0);
return { key: berlinDateKey(date), start, end: new Date(nextStart.getTime() - 1) };
}
/**
* Converts a JS Date (a UTC instant) into its Europe/Berlin wall-clock
* representation for iCalendar's local `TZID` date-time form
+6 -4
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@@ -1,14 +1,16 @@
import { formatBerlinDate, formatBerlinTime } from "@/lib/calendar/timezone";
/** Day + short month, e.g. { day: "15", month: "SEP" } — for the date badge on event cards. */
export function formatEventDateParts(iso: string) {
const date = new Date(iso);
return {
day: date.toLocaleDateString("de-DE", { day: "2-digit" }),
month: date.toLocaleDateString("de-DE", { month: "short" }).toUpperCase().replace(".", ""),
day: formatBerlinDate(date, { day: "2-digit" }),
month: formatBerlinDate(date, { month: "short" }).toUpperCase().replace(".", ""),
};
}
export function formatFullDate(iso: string) {
return new Date(iso).toLocaleDateString("de-DE", {
return formatBerlinDate(new Date(iso), {
weekday: "long",
day: "2-digit",
month: "long",
@@ -17,7 +19,7 @@ export function formatFullDate(iso: string) {
}
export function formatTime(iso: string) {
return new Date(iso).toLocaleTimeString("de-DE", { hour: "2-digit", minute: "2-digit" });
return formatBerlinTime(new Date(iso), { hour: "2-digit", minute: "2-digit" });
}
export function formatTimeRange(start?: string | null, end?: string | null) {
-22
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@@ -1,22 +0,0 @@
/**
* Builds the WebRTC ICE server list from environment variables so a TURN
* server can be added later without any code changes (see DEPLOYMENT.md).
* P2P works fine with just STUN for most networks; TURN becomes necessary
* behind restrictive NATs/firewalls.
*/
export function getIceServers(): RTCIceServer[] {
const servers: RTCIceServer[] = [
{ urls: process.env.STUN_SERVER || "stun:stun.l.google.com:19302" },
];
const turnServer = process.env.TURN_SERVER;
if (turnServer) {
servers.push({
urls: turnServer,
username: process.env.TURN_USERNAME || undefined,
credential: process.env.TURN_PASSWORD || undefined,
});
}
return servers;
}
+33
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@@ -0,0 +1,33 @@
const KICK_RETENTION_MS = 24 * 60 * 60_000;
type KickList = { ids: Set<string>; expiresAt: number };
const kickedParticipantIds = new Map<string, KickList>();
const kickedClientIds = new Map<string, KickList>();
function activeList(map: Map<string, KickList>, eventSlug: string): Set<string> | undefined {
const entry = map.get(eventSlug);
if (!entry) return undefined;
if (entry.expiresAt <= Date.now()) {
map.delete(eventSlug);
return undefined;
}
return entry.ids;
}
export function isMeetingParticipantKicked(eventSlug: string, participantId: string, clientId?: string): boolean {
return Boolean(
activeList(kickedParticipantIds, eventSlug)?.has(participantId) ||
(clientId && activeList(kickedClientIds, eventSlug)?.has(clientId)),
);
}
export function markMeetingParticipantKicked(eventSlug: string, participantId: string, clientId?: string): void {
const expiresAt = Date.now() + KICK_RETENTION_MS;
const participantIds = activeList(kickedParticipantIds, eventSlug) ?? new Set<string>();
participantIds.add(participantId);
kickedParticipantIds.set(eventSlug, { ids: participantIds, expiresAt });
if (clientId) {
const clientIds = activeList(kickedClientIds, eventSlug) ?? new Set<string>();
clientIds.add(clientId);
kickedClientIds.set(eventSlug, { ids: clientIds, expiresAt });
}
}
+54
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@@ -0,0 +1,54 @@
import { createHmac } from "node:crypto";
import { AccessToken, RoomServiceClient, TrackSource } from "livekit-server-sdk";
import type { MeetingRole } from "./token";
function requiredEnv(name: "LIVEKIT_URL" | "LIVEKIT_API_KEY" | "LIVEKIT_API_SECRET"): string {
const value = process.env[name];
if (!value) throw new Error(`${name} is not set`);
return value;
}
export function getLiveKitClientUrl(): string {
return requiredEnv("LIVEKIT_URL").replace(/^http:/, "ws:").replace(/^https:/, "wss:").replace(/\/$/, "");
}
function getLiveKitApiUrl(): string {
return requiredEnv("LIVEKIT_URL").replace(/^ws:/, "http:").replace(/^wss:/, "https:").replace(/\/$/, "");
}
/** Stable opaque room name; the public event slug is never sent to LiveKit logs. */
export function getLiveKitRoomName(eventSlug: string): string {
const secret = requiredEnv("LIVEKIT_API_SECRET");
return `anouma-${createHmac("sha256", secret).update(eventSlug).digest("hex").slice(0, 32)}`;
}
export async function createLiveKitToken(args: {
eventSlug: string;
participantId: string;
name: string;
role: MeetingRole;
clientId?: string;
}): Promise<string> {
const room = getLiveKitRoomName(args.eventSlug);
const token = new AccessToken(requiredEnv("LIVEKIT_API_KEY"), requiredEnv("LIVEKIT_API_SECRET"), {
identity: args.participantId,
name: args.name,
ttl: "2h",
metadata: JSON.stringify({ role: args.role, clientId: args.clientId }),
});
token.addGrant({
roomJoin: true,
room,
canPublish: true,
canSubscribe: true,
canPublishData: true,
canPublishSources: args.role === "host"
? [TrackSource.CAMERA, TrackSource.MICROPHONE, TrackSource.SCREEN_SHARE, TrackSource.SCREEN_SHARE_AUDIO]
: [TrackSource.CAMERA, TrackSource.MICROPHONE],
});
return token.toJwt();
}
export function getLiveKitRoomService(): RoomServiceClient {
return new RoomServiceClient(getLiveKitApiUrl(), requiredEnv("LIVEKIT_API_KEY"), requiredEnv("LIVEKIT_API_SECRET"));
}
-24
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@@ -1,24 +0,0 @@
import type { MeetingRole } from "./token";
export type ParticipantSummary = {
participantId: string;
name: string;
role: MeetingRole;
};
export type ClientToServerMessage =
| { type: "auth"; token: string }
| { type: "offer"; to: string; payload: RTCSessionDescriptionInit }
| { type: "answer"; to: string; payload: RTCSessionDescriptionInit }
| { type: "ice-candidate"; to: string; payload: RTCIceCandidateInit }
| { type: "kick"; targetParticipantId: string };
export type ServerToClientMessage =
| { type: "welcome"; participantId: string; role: MeetingRole; participants: ParticipantSummary[] }
| ({ type: "peer-joined" } & ParticipantSummary)
| { type: "peer-left"; participantId: string }
| { type: "offer"; from: string; payload: RTCSessionDescriptionInit }
| { type: "answer"; from: string; payload: RTCSessionDescriptionInit }
| { type: "ice-candidate"; from: string; payload: RTCIceCandidateInit }
| { type: "kicked" }
| { type: "auth-error"; reason: string };
+3 -2
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@@ -2,6 +2,7 @@ import { getPayload } from "payload";
import config from "@payload-config";
import { combineDateAndTime } from "./status";
import { sendReminderEmail } from "@/lib/email/sendReminderEmail";
import { formatBerlinDate, formatBerlinTime } from "@/lib/calendar/timezone";
const REMINDER_TOLERANCE_MS = 10 * 60 * 1000; // cron may run every few minutes
@@ -10,11 +11,11 @@ function isDue(reminderAt: number, now: number): boolean {
}
function formatDate(date: Date): string {
return date.toLocaleDateString("de-DE", { day: "2-digit", month: "long", year: "numeric" });
return formatBerlinDate(date, { day: "2-digit", month: "long", year: "numeric" });
}
function formatTime(date: Date): string {
return date.toLocaleTimeString("de-DE", { hour: "2-digit", minute: "2-digit" });
return formatBerlinTime(date, { hour: "2-digit", minute: "2-digit" });
}
/**
-92
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@@ -1,92 +0,0 @@
import type { WebSocket } from "ws";
import type { MeetingRole } from "./token";
export type Participant = {
ws: WebSocket;
participantId: string;
clientId?: string;
name: string;
role: MeetingRole;
};
type Room = {
participants: Map<string, Participant>;
kickedParticipantIds: Set<string>;
// Keyed by the client-declared, localStorage-persisted clientId (see
// token.ts) rather than the per-connection participantId, so a kick
// survives the participant simply reconnecting (which always mints a
// fresh participantId) — see isKicked below.
kickedClientIds: Set<string>;
};
// In-memory only — this server process is the single source of truth for
// signaling (no media is ever stored or relayed through it). If this app is
// ever scaled to multiple instances, this state needs to move to a shared
// store (e.g. Redis pub/sub) alongside a real SFU.
const rooms = new Map<string, Room>();
function getOrCreateRoom(eventSlug: string): Room {
let room = rooms.get(eventSlug);
if (!room) {
room = { participants: new Map(), kickedParticipantIds: new Set(), kickedClientIds: new Set() };
rooms.set(eventSlug, room);
}
return room;
}
export function isKicked(eventSlug: string, participantId: string, clientId?: string): boolean {
const room = rooms.get(eventSlug);
if (!room) return false;
if (room.kickedParticipantIds.has(participantId)) return true;
return clientId ? room.kickedClientIds.has(clientId) : false;
}
export function joinRoom(eventSlug: string, participant: Participant): Participant[] {
const room = getOrCreateRoom(eventSlug);
const existing = [...room.participants.values()];
// Two connections claiming the same participantId (e.g. two tabs replaying
// the same stored session) would otherwise silently overwrite the map
// entry here and orphan the first socket — close it first so it doesn't
// leak as an unreachable broadcast target.
room.participants.get(participant.participantId)?.ws.close(4002, "replaced-by-new-connection");
room.participants.set(participant.participantId, participant);
return existing;
}
export function leaveRoom(eventSlug: string, participantId: string) {
const room = rooms.get(eventSlug);
if (!room) return;
room.participants.delete(participantId);
if (room.participants.size === 0) rooms.delete(eventSlug);
}
export function kickFromRoom(eventSlug: string, participantId: string) {
const room = rooms.get(eventSlug);
if (!room) return;
room.kickedParticipantIds.add(participantId);
const target = room.participants.get(participantId);
if (target?.clientId) room.kickedClientIds.add(target.clientId);
room.participants.delete(participantId);
}
export function getParticipant(eventSlug: string, participantId: string): Participant | undefined {
return rooms.get(eventSlug)?.participants.get(participantId);
}
export function getRoomParticipants(eventSlug: string): Participant[] {
return [...(rooms.get(eventSlug)?.participants.values() ?? [])];
}
export function broadcast(
eventSlug: string,
message: unknown,
opts: { exclude?: string } = {},
) {
const room = rooms.get(eventSlug);
if (!room) return;
const data = JSON.stringify(message);
for (const p of room.participants.values()) {
if (opts.exclude && p.participantId === opts.exclude) continue;
if (p.ws.readyState === p.ws.OPEN) p.ws.send(data);
}
}
-115
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@@ -1,115 +0,0 @@
import type { WebSocket, WebSocketServer } from "ws";
import { verifyMeetingToken } from "./token";
import {
broadcast,
getParticipant,
isKicked,
joinRoom,
kickFromRoom,
leaveRoom,
type Participant,
} from "./rooms";
import type { ClientToServerMessage, ParticipantSummary } from "./protocol";
// A connection has this long to send its "auth" message before being
// dropped. The token travels as the first WS message rather than a
// `?token=` query parameter so it doesn't end up persisted in reverse-proxy
// or access logs; it's still HMAC-signed and short-lived either way.
const AUTH_TIMEOUT_MS = 10_000;
function participantSummary(p: Participant): ParticipantSummary {
return { participantId: p.participantId, name: p.name, role: p.role };
}
export function attachSignalingServer(wss: WebSocketServer) {
wss.on("connection", (ws: WebSocket) => {
let self: Participant | null = null;
let eventSlug: string | null = null;
const authTimeout = setTimeout(() => {
if (!self) ws.close(4000, "auth-timeout");
}, AUTH_TIMEOUT_MS);
function handleAuth(token: string) {
const payload = verifyMeetingToken(token);
if (!payload) {
ws.send(JSON.stringify({ type: "auth-error", reason: "invalid-token" }));
ws.close(4000, "invalid-token");
return;
}
if (isKicked(payload.eventSlug, payload.participantId, payload.clientId)) {
ws.close(4001, "removed-by-host");
return;
}
eventSlug = payload.eventSlug;
self = {
ws,
participantId: payload.participantId,
clientId: payload.clientId,
name: payload.name,
role: payload.role,
};
const existing = joinRoom(eventSlug, self);
ws.send(
JSON.stringify({
type: "welcome",
participantId: self.participantId,
role: self.role,
participants: existing.map(participantSummary),
}),
);
broadcast(eventSlug, { type: "peer-joined", ...participantSummary(self) }, {
exclude: self.participantId,
});
}
ws.on("message", (raw) => {
let message: ClientToServerMessage;
try {
message = JSON.parse(raw.toString());
} catch {
return;
}
if (message.type === "auth") {
clearTimeout(authTimeout);
if (self) return; // already authenticated on this connection
handleAuth(message.token);
return;
}
if (!self || !eventSlug) return; // no messages accepted before auth
if (message.type === "offer" || message.type === "answer" || message.type === "ice-candidate") {
const target = getParticipant(eventSlug, message.to);
if (target && target.ws.readyState === target.ws.OPEN) {
target.ws.send(
JSON.stringify({ type: message.type, from: self.participantId, payload: message.payload }),
);
}
return;
}
if (message.type === "kick") {
if (self.role !== "host") return; // server-side authority, not client-claimed
const target = getParticipant(eventSlug, message.targetParticipantId);
if (!target) return;
kickFromRoom(eventSlug, target.participantId);
target.ws.send(JSON.stringify({ type: "kicked" }));
target.ws.close(4001, "removed-by-host");
broadcast(eventSlug, { type: "peer-left", participantId: target.participantId });
}
});
ws.on("close", () => {
clearTimeout(authTimeout);
if (!self || !eventSlug) return;
leaveRoom(eventSlug, self.participantId);
broadcast(eventSlug, { type: "peer-left", participantId: self.participantId });
});
});
}
+6 -3
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@@ -1,3 +1,5 @@
import { berlinParts, berlinWallTimeToUTC } from "@/lib/calendar/timezone";
export type MeetingStatus = "scheduled" | "open" | "live" | "ended";
/**
@@ -9,9 +11,10 @@ export function combineDateAndTime(dateISO: string, timeISO?: string | null): Da
const date = new Date(dateISO);
if (!timeISO) return date;
const time = new Date(timeISO);
const combined = new Date(date);
combined.setHours(time.getHours(), time.getMinutes(), 0, 0);
return combined;
if (Number.isNaN(date.getTime()) || Number.isNaN(time.getTime())) return new Date(NaN);
const dateParts = berlinParts(date);
const timeParts = berlinParts(time);
return berlinWallTimeToUTC(dateParts, timeParts.hour, timeParts.minute);
}
export type MeetingWindow = {
+13 -3
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@@ -61,7 +61,8 @@ export function createMeetingToken(args: {
}
/** Verifies signature + expiry. Returns null if invalid/expired/tampered. */
export function verifyMeetingToken(token: string): MeetingTokenPayload | null {
export function verifyMeetingToken(token: unknown): MeetingTokenPayload | null {
if (typeof token !== "string" || token.length > 4096) return null;
const parts = token.split(".");
if (parts.length !== 2) return null;
const [body, signature] = parts;
@@ -73,8 +74,17 @@ export function verifyMeetingToken(token: string): MeetingTokenPayload | null {
try {
const payload = JSON.parse(Buffer.from(body, "base64url").toString("utf8")) as MeetingTokenPayload;
if (typeof payload.exp !== "number" || payload.exp < Date.now()) return null;
if (!payload.eventSlug || !payload.participantId || !payload.name || !payload.role) return null;
if (
!Number.isFinite(payload.exp) ||
payload.exp < Date.now() ||
typeof payload.eventSlug !== "string" ||
payload.eventSlug.length > 200 ||
typeof payload.participantId !== "string" ||
payload.participantId.length > 100 ||
typeof payload.name !== "string" ||
payload.name.length > 120 ||
(payload.role !== "host" && payload.role !== "participant")
) return null;
return payload;
} catch {
return null;
+6 -1
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@@ -1,6 +1,6 @@
import { cache } from "react";
import { getCMS } from "@/lib/payload/getPayload";
import type { About, AktuellesIntro, AngeboteIntro, Booking, BookingSetting, Contact, CookieSetting, Home, SeoSetting } from "@/payload-types";
import type { About, AktuellesIntro, AngeboteIntro, Booking, BookingSetting, Contact, CookieSetting, Home, MeetingSetting, SeoSetting } from "@/payload-types";
export const getHomeGlobal = cache(async (): Promise<Home> => {
const payload = await getCMS();
@@ -37,6 +37,11 @@ export const getBookingSettingsGlobal = cache(async (): Promise<BookingSetting>
return payload.findGlobal({ slug: "booking-settings" });
});
export const getMeetingSettingsGlobal = cache(async (): Promise<MeetingSetting> => {
const payload = await getCMS();
return payload.findGlobal({ slug: "meeting-settings" });
});
export const getSEOSettingsGlobal = cache(async (): Promise<SeoSetting> => {
const payload = await getCMS();
return payload.findGlobal({ slug: "seo-settings" });