@worldresources/gfw-components/src/utils/storage.js

React component library for the Global Forest Watch project.

/**
 * pushes all new notifications to localStorage
 * @param {Array<number>} ids array of notification id
 */
export const addNotifications = (ids) => {
  try {
    const notificationIds =
      JSON.parse(localStorage.getItem('gfw-notification-ids')) || [];
    let needsUpdate = false;

    ids.forEach((id) => {
      if (!notificationIds.includes(id)) {
        needsUpdate = true;
        notificationIds.push(id);
      }
    });

    if (needsUpdate) {
      localStorage.setItem(
        'gfw-notification-ids',
        JSON.stringify(notificationIds)
      );
    }
    // eslint-disable-next-line no-empty
  } catch (error) {}
};

/**
 * Checks if all notification ids exist in the localStorage object
 * @param {Array<number>} ids array of notification id
 * @returns boolean
 */
export const notificationsExists = (ids) => {
  const notificationIds =
    JSON.parse(localStorage.getItem('gfw-notification-ids')) || [];

  return ids.every((id) => notificationIds.includes(id));
};