Function calculateUnreadCount

web/src/components/layout/HeaderBar.js:70–80

()

  const getAnnouncementKey = (a) => `${a?.publishDate || ''}-${(a?.content || '').slice(0, 30)}`;

  const calculateUnreadCount = () => {
    if (!announcements.length) return 0;
    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))).length;
  };

  const getUnreadKeys = () => {
    if (!announcements.length) return [];