owltide/server/api/subscribe.post.ts

import { readSubscriptions, writeSubscriptions } from "~/server/database";

export default defineEventHandler(async (event) => {
	const body: { subscription: PushSubscriptionJSON } = await readBody(event);
	const subscriptions = await readSubscriptions();
	const existingIndex = subscriptions.findIndex(sub => sub.endpoint === body.subscription.endpoint);
	if (existingIndex !== -1) {
		subscriptions[existingIndex] = body.subscription;
	} else {
		subscriptions.push(body.subscription);
	}
	await writeSubscriptions(subscriptions);
	if (existingIndex !== -1) {
		return { message: "Existing subscription refreshed."};
	}
	return { message: "New subscription registered."};
})