import { BackendEvent } from '@wireapp/api-client/lib/event';
import { Notification } from '@wireapp/api-client/lib/notification/';
import { CRUDEngine } from '@wireapp/store-engine';
export declare enum DatabaseKeys {
    PRIMARY_KEY_LAST_EVENT = "z.storage.StorageKey.EVENT.LAST_DATE",
    PRIMARY_KEY_LAST_NOTIFICATION = "z.storage.StorageKey.NOTIFICATION.LAST_ID"
}
export declare class NotificationDatabaseRepository {
    private readonly storeEngine;
    constructor(storeEngine: CRUDEngine);
    getNotificationEventList(): Promise<BackendEvent[]>;
    getLastEventDate(): Promise<Date>;
    updateLastEventDate(eventDate: Date): Promise<Date>;
    createLastEventDate(eventDate: Date): Promise<Date>;
    getLastNotificationId(): Promise<string>;
    updateLastNotificationId(lastNotification: Notification): Promise<string>;
}
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