/// <reference types="node" />
import { EventEmitter } from 'events';
export interface IThingsboardMqttClient {
    on(type: 'connecting', callback: () => void): any;
    on(type: 'disconnected', callback: () => void): any;
    on(type: 'connected', callback: () => void): any;
    on(type: 'attributes', callback: (topic: any, payload: any) => void): any;
    closeMqttConnection(): any;
    /**
     * Register a device with Thingsboard as connected
     * @param deviceName The device name
     */
    registerDeviceAsConnected(deviceName: string): void;
    /**
     * Register a device with Thingsboard as disconnected
     * @param deviceName The device name
     */
    registerDeviceAsDisconnected(deviceName: string): void;
    /**
     * Update device client attributes on Thingsboard
     * @param deviceName The device name
     * @param attributes Attributes as an object of key value pairs
     * Resolves if attributes are updated, else rejects
     */
    updateDeviceClientAttributes(deviceName: string, attributes: any): Promise<any>;
    /**
     * Update device telemetry on Thingsboard
     * @param deviceName The device name
     * @param telemetry Telemetry as an object of key value pairs
     * Resolves if telemetry is updated, else rejects
     */
    updateDeviceTelemetry(deviceName: string, timestamp: number, telemetry: any): Promise<any>;
}
export declare class ThingsboardMqttClient extends EventEmitter implements IThingsboardMqttClient {
    private siteURL;
    private gatewayId;
    private accessToken;
    private allowSelfCert;
    private mqttClient;
    private slowReconnectCounter;
    private reconnectTimeout;
    constructor(siteURL: string, gatewayId: string, accessToken: string, allowSelfCert: boolean);
    closeMqttConnection(): Promise<void>;
    updateDeviceClientAttributes(deviceName: string, attributes: any): Promise<any>;
    updateDeviceTelemetry(deviceName: string, timestamp: number, telemetry: any): Promise<any>;
    registerDeviceAsConnected(deviceName: string): void;
    registerDeviceAsDisconnected(deviceName: string): void;
    /**
     * Get the state of the MQTT connection
     * @returns true if connected to the Thingsboard instance, else false
     */
    private isConnected;
    /**
     * Connect to the Thingsboard instance
     * @returns A Promise which resolves if a connection is established, or rejects with the error if a connection fails
     */
    private connect;
    /**
     * Disconnect from the Thingsboard instance
     * @returns A Promise which resolves when the connection has ended
     */
    private disconnect;
    /**
     * Publish a device event to the Thingsboard instance
     * @param {string} topic - The event topic
     * @param {string} payload - The event payload
     * @param {mqtt.QoS} qos - The QoS to use when publishing
     */
    private publish;
}