session.ts

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`f32f5e95` 2026-03-16 Pavel Safronov	1	import { generateRoomKey, exportRoomKey, importRoomKey } from '../../core/crypto';
	2	import { buildRoomHash, parseRoomFromHash } from '../../core/room';
`92f24c4e` 2026-03-16 Pavel Safronov	3	import { renderInviteQrCard } from './qr';
`32796e53` 2026-03-16 Pavel Safronov	4	import { PUBLIC_SETTINGS } from '../../public_settings';
`36d64b37` 2026-03-15 Pavel Safronov	5
	6	/**
	7	* Parses an existing room from the URL hash, or generates a new one.
	8	* Sets room UI elements and renders invite QR cards.
	9	* Returns { roomId, roomKey, roomKeyBase64 }.
	10	*/
	11	export async function initSession({
	12	roomCurrent,
	13	createRoomLink,
	14	inviteRoomQrList,
	15	isLocalCommit,
	16	BASE_ROOM_URL,
`764d68de` 2026-03-16 Pavel Safronov	17	CREATE_ROOM_URL,
`36d64b37` 2026-03-15 Pavel Safronov	18	GITLAB_PAGES_BASE_URL
`b4e7f682` 2026-03-16 Pavel Safronov	19	}: {
	20	roomCurrent: HTMLElement \| null;
	21	createRoomLink: HTMLAnchorElement \| null;
	22	inviteRoomQrList: HTMLElement \| null;
	23	isLocalCommit: boolean;
	24	BASE_ROOM_URL: string;
`764d68de` 2026-03-16 Pavel Safronov	25	CREATE_ROOM_URL: string;
`b4e7f682` 2026-03-16 Pavel Safronov	26	GITLAB_PAGES_BASE_URL: string;
`36d64b37` 2026-03-15 Pavel Safronov	27	}) {
`b4e7f682` 2026-03-16 Pavel Safronov	28	let roomKey: CryptoKey \| null = null;
	29	let roomKeyBase64: string \| null = null;
	30	let roomId: string;
`36d64b37` 2026-03-15 Pavel Safronov	31
	32	const parsedRoom = parseRoomFromHash(location.hash);
	33	if (parsedRoom) {
	34	roomId = parsedRoom.roomId;
	35	if (parsedRoom.roomKeyBase64) {
	36	try {
	37	roomKey = await importRoomKey(parsedRoom.roomKeyBase64);
	38	roomKeyBase64 = parsedRoom.roomKeyBase64;
	39	} catch (err) {
	40	console.error('Failed to import room key from URL — running without encryption', err);
	41	}
	42	}
	43	} else {
`9fda5271` 2026-03-16 Pavel Safronov	44	roomId = crypto.randomUUID().replace(/-/g, '').slice(0, PUBLIC_SETTINGS.room.idLength);
`36d64b37` 2026-03-15 Pavel Safronov	45	roomKey = await generateRoomKey();
	46	roomKeyBase64 = await exportRoomKey(roomKey);
	47	location.hash = buildRoomHash(roomId, roomKeyBase64);
	48	}
	49
	50	if (roomCurrent) roomCurrent.textContent = `You are currently in room ${roomId}`;
`764d68de` 2026-03-16 Pavel Safronov	51	if (createRoomLink) createRoomLink.href = CREATE_ROOM_URL;
`36d64b37` 2026-03-15 Pavel Safronov	52
	53	if (inviteRoomQrList) {
	54	const inviteRoomUrl = `${BASE_ROOM_URL}#${buildRoomHash(roomId, roomKeyBase64)}`;
	55	inviteRoomQrList.textContent = '';
	56	const isLocalRun = isLocalCommit \|\| ['localhost', '127.0.0.1', '::1'].includes(location.hostname);
	57	const roomHash = buildRoomHash(roomId, roomKeyBase64);
	58
	59	await renderInviteQrCard({
	60	container: inviteRoomQrList,
	61	title: isLocalRun ? 'This Device URL' : '',
	62	url: inviteRoomUrl,
	63	statusText: 'Scan to join this room',
	64	roomId
	65	});
	66
	67	if (isLocalRun) {
	68	await renderInviteQrCard({
	69	container: inviteRoomQrList,
	70	title: 'GitLab Pages URL',
	71	url: `${GITLAB_PAGES_BASE_URL}#${roomHash}`,
	72	statusText: 'Scan to join on hosted app',
	73	roomId
	74	});
	75	}
	76	}
	77
	78	return { roomId, roomKey, roomKeyBase64 };
	79	}