room.ts

1	import { PUBLIC_SETTINGS } from '../public_settings';
2
3	const ROOM_KEY_PATTERN = /^[A-Za-z0-9_-]+$/;
4
5	export const buildRoomHash = (nextRoomId: string, nextRoomKeyBase64: string \| null = null) => {
6	const keyPart = nextRoomKeyBase64 ? `.${nextRoomKeyBase64}` : '';
7	return `${nextRoomId}${keyPart}`;
8	};
9
10	export const parseRoomFromHash = (hashValue: string) => {
11	const normalizedHash = (hashValue \|\| '').startsWith('#') ? hashValue.slice(1) : (hashValue \|\| '');
12	const compactMatch = normalizedHash.match(new RegExp(`^([a-z0-9]{${PUBLIC_SETTINGS.room.idLength}})(?:\\.([A-Za-z0-9_-]+))?$`));
13	if (!compactMatch) return null;
14
15	const roomValue = compactMatch[1];
16	const keyValue = compactMatch[2] \|\| null;
17	if (keyValue && !ROOM_KEY_PATTERN.test(keyValue)) return null;
18	return { roomId: roomValue, roomKeyBase64: keyValue };
19	};