Hornwitser
e52972853d
I firmly believe in free software. The application I'm making here have capabilities that I've not seen in any system. It presents itself as an opportunity to collaborate on a tool that serves the people rather than corporations. Whose incentives are to help people rather, not make the most money. And whose terms ensure that these freedoms and incentives cannot be taken back or subverted. I license this software under the AGPL.
71 lines
2.2 KiB
TypeScript
71 lines
2.2 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 * as fs from "node:fs/promises";
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import type { H3Event } from "h3";
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import webPush from "web-push";
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import { readSubscriptions, writeSubscriptions } from "~/server/database";
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let cachedVapidDetails: {
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subject: string,
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publicKey: string,
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privateKey: string,
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} | undefined;
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async function useVapidDetails(event: H3Event) {
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if (cachedVapidDetails) {
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return cachedVapidDetails;
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}
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const runtimeConfig = useRuntimeConfig(event);
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if (!runtimeConfig.vapidSubject) throw new Error("NUXT_VAPID_SUBJECT not set.")
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if (!runtimeConfig.public.vapidPublicKey) throw new Error("NUXT_PUBLIC_VAPID_PUBLIC_KEY not set.")
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if (!runtimeConfig.vapidPrivateKeyFile) throw new Error("NUXT_VAPID_PRIVATE_KEY_FILE not set.")
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return cachedVapidDetails = {
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subject: runtimeConfig.vapidSubject,
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publicKey: runtimeConfig.public.vapidPublicKey,
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privateKey: await fs.readFile(runtimeConfig.vapidPrivateKeyFile, "utf-8"),
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}
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}
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export async function sendPush(event: H3Event, title: string, body: string) {
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const vapidDetails = await useVapidDetails(event);
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const payload = JSON.stringify({ title, body });
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const subscriptions = await readSubscriptions();
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console.log(`Sending "${payload}" to ${subscriptions.length} subscribers`);
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const removeIndexes = [];
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for (let index = 0; index < subscriptions.length; index += 1) {
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const subscription = subscriptions[index];
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if (subscription.type !== "push")
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continue;
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try {
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await webPush.sendNotification(
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subscription.push as webPush.PushSubscription,
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payload,
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{
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TTL: 3600,
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urgency: "high",
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vapidDetails,
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}
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)
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} catch (err: any) {
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if (err?.statusCode === 410) {
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removeIndexes.push(index);
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} else {
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console.error("Received error sending push notice:", err.message, err?.statusCode)
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console.error(err);
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}
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}
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}
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if (removeIndexes.length) {
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console.log(`Removing indexes ${removeIndexes} from subscriptions`)
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removeIndexes.reverse();
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for (const index of removeIndexes) {
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subscriptions.splice(index, 1);
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}
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await writeSubscriptions(subscriptions);
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}
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console.log("Push notices sent");
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}
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