import { Observable } from 'rxjs/Observable';
import { AxiosInstance } from 'axios';
import { Source, ExpandedSource, Metric } from '../types';
import { DataClient } from './data-client';
import { LayerClient } from './layer-client';
export declare class CotClient {
    protected host: string;
    protected ax: AxiosInstance;
    private lastReceivedTime;
    /**
     * Creates a new CotClient, with optional Basic Auth credentials
     * @param host The host url of the new City of things client. (e.g. http://www.cot-backend.com/api);
     * @param credentials {CotClientCredentials=} Optional credentials object
     */
    constructor(host: string, credentials?: CotClientCredentials);
    /**
     * Returns all available sources as an array of Source objects
     * @returns An Observable containing a Source array.
     */
    getSources(): Observable<Source[]>;
    /**
     * Returns the metadata of a source as a Source object.
     * @param sourceId {string} The id of the Source to get the metadata from.
     * @param expanded {boolean} Whether to expand the typeRefs or metrics from ids to full Types Metrics (default: false)
     * @returns An Observable containing a *Source* object.
     */
    getSource(sourceId: string, expanded?: boolean): Observable<Source | ExpandedSource>;
    /**
     * Lists all Metric definitions.
     * @returns An Observable cotaining an array of *Metric* objects.
     */
    getMetrics(): Observable<Metric[]>;
    /**
     * Returns the definition of a Metric.
     * @param The id of a metric
     * @returns An Observable containing a *Metric* object.
     */
    getMetric(metricId: string): Observable<Metric>;
    /**
     * Returns the ids of the city data layers.
     */
    getCityIds(): Observable<string[]>;
    /**
     * Returns a MultiClient that internally iterates over all given sourceIds when requesting data or stats.
     * @param sourceIds {string[]} The sourceIds to do simultaneous queries on.
     * @returns A new SourcesClient object.
     */
    withSources(...sourceIds: string[]): DataClient;
    /**
     * Returns a MultiClient that internally iterates over all given geohashes when requesting data or stats.
     * @param geohashes {string[]} The geohashes to do simultaneous queries in.
     * @returns A new LocationsClient object.
     */
    withLocations(...geohashes: string[]): DataClient;
    /**
     * Returns a LayerClient that provides an entry point to layer data per metric for the given cityId
     * @param cityId An id that signifies both the city location and the data granularity
     */
    withCityId(cityId: string): LayerClient;
}
export interface CotClientCredentials {
    username: string;
    password: string;
}