Function getUnreadKeys

web/src/components/layout/HeaderBar.js:82–92

()

  };

  const getUnreadKeys = () => {
    if (!announcements.length) return [];
    let readKeys = [];
    try {
      readKeys = JSON.parse(localStorage.getItem('notice_read_keys')) || [];
    } catch (_) {
      readKeys = [];
    }
    const readSet = new Set(readKeys);
    return announcements.filter((a) => !readSet.has(getAnnouncementKey(a))).map(getAnnouncementKey);
  };

  useEffect(() => {
    setUnreadCount(calculateUnreadCount());