import { BadgeUpSettings } from '../config';
import { BadgeUpNotificationType, BadgeUpPartialEvent, BadgeUpStorage } from '../declarations';
import { BadgeUp as BadgeUpJSClient } from '@badgeup/badgeup-browser-client';
import { BadgeUpLogger } from './badgeUpLogger';
import { BadgeUpNotification } from './badgeUpNotification';
import { SubjectProvider } from './providers/subject';
export declare class BadgeUpClient {
    private subjectProvider;
    private badgeUpLogger;
    private badgeUpNotification;
    private badgeUpSettings;
    private badgeUpStorage;
    badgeUpJSClient: BadgeUpJSClient;
    /**
     * Notification callback used to receive BadgeUp notifications
     * about user achievements and awards.
     *
     * @callback notificationCallback
     * @param notificationType - The type of the notification.
     * @param data - Any data that type of notification has. This can be cast depending on the type of notification.
     */
    private notificationCallbacks;
    /**
     * BadgeUp Ionic client constructor
     * @param badgeUpLogger - Internal logger.
     * @param badgeUpNotification - Provides toast notifications to users.
     * @param badgeUpSettings - Client settings.
     * @param badgeUpStorage - Storage engine for events.
     * @param browserClient - Underlying browser client that the ionic client relies on. https://github.com/BadgeUp/badgeup-browser-client
     */
    constructor(subjectProvider: SubjectProvider, badgeUpLogger: BadgeUpLogger, badgeUpNotification: BadgeUpNotification, badgeUpSettings: BadgeUpSettings, badgeUpStorage: BadgeUpStorage, badgeUpJSClient: BadgeUpJSClient);
    private init();
    /**
     * Allows you to configure the default subject provider. If at any point the subject is undefined
     * for some events, this provider will be called.
     *
     * As an input, you get eventKey, which lets you return different subject values based on the event key.
     * For some event keys, you might want to use deviceId as a subject, for others, the user's email.
     * @param subjectProvider - The subject provider to use.
     */
    setSubject(subject: string): void;
    /**
     * Subscribe to BadgeUp notifications and receive new notifications about the state of system.
     *
     * For example, you can receive 'new achievement' notification that you can use to learn about
     * new achievements user has earned, and display some kind of congratulations modal.
     * @param notificationCallback - The callback to use when notification is received
     */
    subscribe(notificationCallback: (notificationType: BadgeUpNotificationType, data: any) => void): void;
    /**
     * Unsubscribe from BadgeUp notifications.
     *
     * Unsubscribe if you're done, as failure to do so will lead to memory leaks.
     * @param notificationCallback - The callback to unsubscribe from.
     */
    unsubscribe(notificationCallback: (notificationType: BadgeUpNotificationType, data: any) => void): void;
    /**
     * Send a new BadgeUp event
     *
     * This method works without internet as well, using local storage to store the events.
     * Events will be synced to server once internet is available again.
     * @param badgeUpEvent - The event to send
     */
    emit(e: BadgeUpPartialEvent): void;
    private fire(eventType, data);
    private progressHandler(progress);
    /**
     * Sends all events in storage, clearing storage
     */
    private flush();
}