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/*
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 *  This file is part of CoCalc: Copyright © 2020 Sagemath, Inc.
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 *  License: MS-RSL – see LICENSE.md for details
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 */
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import { redux } from "./app-framework";
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// Calling set_window_title will set the title, but also put a notification
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// count to the left of the title; if called with no arguments just updates
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// the count, maintaining the previous title.
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export function notifyCount() {
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  const mentions = redux.getStore("mentions");
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  const account = redux.getStore("account");
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  const news = redux.getStore("news");
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  // we always count balance_alert as "1", since we don't even
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  // know how many of them there are until querying stripe.
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  return (
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    (mentions?.getUnreadSize() ?? 0) +
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    (account?.get("unread_message_count") ?? 0) +
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    (news?.get("unread") ?? 0) +
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    (account?.get("balance_alert") ? 1 : 0)
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  );
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}
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let last_title: string = "";
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export function set_window_title(title?: string): void {
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  if (title == null) {
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    title = last_title;
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  }
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  last_title = title;
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  const u = notifyCount();
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  if (u) {
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    title = `(${u}) ${title}`;
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  }
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  const site_name = redux.getStore("customize").get("site_name");
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  if (title.length > 0) {
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    document.title = title + " - " + site_name;
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  } else {
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    document.title = site_name;
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  }
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}
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