import { InboxDataSet } from '../types/inbox-data-set';
import { InboxMessage } from '@trycourier/courier-js';
/**
 * Event callbacks which may be fully or partially implemented to be called when
 * {@link CourierInboxDatastore} has updates.
 *
 * @public
 */
export declare class CourierInboxDatastoreEvents {
    /**
     * Called when the dataset changes.
     * @public
     * @param _dataset - The updated inbox dataset
     */
    onDataSetChange?(_dataset: InboxDataSet): void;
    /**
     * Called when a new page is added to the dataset.
     * @public
     * @param _dataset - The updated inbox dataset with the new page
     */
    onPageAdded?(_dataset: InboxDataSet): void;
    /**
     * Called when the unread count changes.
     * @public
     * @param _unreadCount - The new unread count
     * @param _datasetId - The dataset ID that was updated
     */
    onUnreadCountChange?(_unreadCount: number, _datasetId: string): void;
    /**
     * Called when the total unread count across all datasets changes.
     * @public
     * @param _totalUnreadCount - The new total unread count
     */
    onTotalUnreadCountChange?(_totalUnreadCount: number): void;
    /**
     * Called when a new message is added.
     * @public
     * @param _message - The added InboxMessage
     * @param _index - The index where the message was added
     * @param _datasetId - The dataset ID that was updated
     */
    onMessageAdd?(_message: InboxMessage, _index: number, _datasetId: string): void;
    /**
     * Called when a message is removed.
     * @public
     * @param _message - The InboxMessage that was removed
     * @param _index - The index from which the message was removed
     * @param _datasetId - The dataset ID that was updated
     */
    onMessageRemove?(_message: InboxMessage, _index: number, _datasetId: string): void;
    /**
     * Called when a message is updated.
     * @public
     * @param _message - The updated InboxMessage
     * @param _index - The index where the message was updated
     * @param _datasetId - The dataset ID that was updated
     */
    onMessageUpdate?(_message: InboxMessage, _index: number, _datasetId: string): void;
    /**
     * Called when an error occurs in the data store.
     * @public
     * @param _error - The error object
     */
    onError?(_error: Error): void;
}