owltide/server/api/subscribe.post.ts

import { readSubscriptions, writeSubscriptions } from "~/server/database";
import { Subscription } from "~/shared/types/account";

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