owltide/server/api/unsubscribe.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.type === "push" && sub.push.endpoint === body.subscription.endpoint
	);
	if (existingIndex !== -1) {
		subscriptions.splice(existingIndex, 1);
	} else {
		return { message: "No subscription registered."};
	}
	await writeSubscriptions(subscriptions);
	return { message: "Existing subscription removed."};
})