Hornwitser
753da6d3d4
Store events that are to be broadcasted in the database, and fetch events to serve in the /api/event stream to the client from the database. This ensures that events are not lost if the operation to open the stream takes longer than usual, or the client was not connected at the time the event was broadcast. To ensure no events are lost in the transition from server generating the page to the client hydrating and establishing a connection with the event stream, the /api/last-event-id endpoint is first queried on the server before any other entities is fetched from the database. The client then passes this id when establishing the event stream, and receives all events greater than that id.
64 lines
1.8 KiB
TypeScript
64 lines
1.8 KiB
TypeScript
/*
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SPDX-FileCopyrightText: © 2025 Hornwitser <code@hornwitser.no>
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SPDX-License-Identifier: AGPL-3.0-or-later
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*/
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import {
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readUsers, readSessions, readSubscriptions,
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writeUsers, writeSessions, writeSubscriptions,
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nextEventId,
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} from "~/server/database";
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import { broadcastEvent, cancelAccountStreams } from "~/server/streams";
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export default defineEventHandler(async (event) => {
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const serverSession = await requireServerSessionWithUser(event);
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let users = await readUsers();
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// Expire sessions for this user
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const expiredSessionIds = new Set<number>();
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let sessions = await readSessions();
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const nowMs = Date.now();
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for (const session of sessions) {
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if (
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session.successor !== undefined
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&& (session.expiresAtMs === undefined || session.expiresAtMs < nowMs)
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&& session.accountId === serverSession.accountId
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) {
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session.expiresAtMs = nowMs;
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broadcastEvent({
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id: await nextEventId(),
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type: "session-expired",
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sessionId: session.id,
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});
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expiredSessionIds.add(session.id);
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}
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}
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cancelAccountStreams(serverSession.accountId);
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await writeSessions(sessions);
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await deleteCookie(event, "session");
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// Remove subscriptions for this user
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let subscriptions = await readSubscriptions();
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subscriptions = subscriptions.filter(
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subscription => !expiredSessionIds.has(subscription.sessionId)
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);
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await writeSubscriptions(subscriptions);
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// Remove the user
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const account = users.find(user => user.id === serverSession.accountId)!;
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const now = new Date(nowMs).toISOString();
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account.deleted = true;
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account.updatedAt = now;
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await writeUsers(users);
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await broadcastEvent({
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id: await nextEventId(),
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type: "user-update",
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data: {
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id: account.id,
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updatedAt: now,
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deleted: true,
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}
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});
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// Update Schedule counts.
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await updateScheduleInterestedCounts(users);
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})
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