// This file is part of the happyDomain (R) project.
// Copyright (c) 2022-2026 happyDomain
// Authors: Pierre-Olivier Mercier, et al.
//
// This program is offered under a commercial and under the AGPL license.
// For commercial licensing, contact us at <contact@happydomain.org>.
//
// For AGPL licensing:
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.

import { writable, type Writable } from "svelte/store";
import { listChannelTypes } from "$lib/api/notifications";

export const notificationChannelTypes: Writable<string[] | undefined> = writable(undefined);

let pending: Promise<string[]> | undefined;

export async function refreshNotificationChannelTypes(): Promise<string[]> {
    if (pending) return pending;
    pending = (async () => {
        try {
            const types = await listChannelTypes();
            notificationChannelTypes.set(types);
            return types;
        } finally {
            pending = undefined;
        }
    })();
    return pending;
}
