import { Observable } from 'rxjs';
import { HttpClient } from '@angular/common/http';
import { ServerResponse } from '../../interfaces/serverResponse';
import { RequestParam } from '../../interfaces/requestParam';
/**
 * Service to provide base CRUD methods to make api request.
 *
 */
export declare class DataService {
    /**
     * Contains rootOrg Id
     */
    rootOrgId: string;
    /**
     * Contains channel Id
     */
    channelId: string;
    /**
     * Contains appId
     */
    appId: string;
    /**
     * Contains devoce Id
     */
    deviceId: string;
    /**
     * Contains base Url for api end points
     */
    baseUrl: string;
    /**
     * angular HttpClient
     */
    http: HttpClient;
    /**
     * Constructor
     * @param HttpClient http HttpClient reference
     */
    constructor(http: HttpClient);
    /**
     * for making get api calls which needs headers in response
     *  headers are fetched to get server time using Date attribute in header
     * @param requestParam interface
     */
    getWithHeaders(requestParam: RequestParam): Observable<ServerResponse>;
    /**
     * for making get api calls
     *
     * @param requestParam interface
     */
    get(requestParam: RequestParam): Observable<ServerResponse>;
    /**
     * for making post api calls with headers in response object
     *
     * @param RequestParam requestParam interface
     *
     */
    postWithHeaders(requestParam: RequestParam): Observable<any>;
    /**
     * for making post api calls
     * @param RequestParam requestParam interface
     */
    post(requestParam: RequestParam): Observable<ServerResponse>;
    /**
     * for making patch api calls
     *
     * @param RequestParam requestParam interface
     *
     */
    patch(requestParam: RequestParam): Observable<ServerResponse>;
    /**
     * for making delete api calls
     * @param RequestParam requestParam interface
     */
    delete(requestParam: RequestParam): Observable<ServerResponse>;
    /**
     * for preparing headers
     */
    private getHeader;
    private getDateDiff;
}