/**
 * -------------------------------------------------------------------------------------------
 * Copyright (c) Microsoft Corporation.  All Rights Reserved.  Licensed under the MIT License.
 * See License in the project root for license information.
 * -------------------------------------------------------------------------------------------
 */
/**
 * @module ChaosHandler
 */
import { Context } from "../IContext";
import { Middleware } from "./IMiddleware";
import { ChaosHandlerOptions } from "./options/ChaosHandlerOptions";
/**
 * Class representing ChaosHandler
 * @class
 * Class
 * @implements Middleware
 */
export declare class ChaosHandler implements Middleware {
    /**
     * A member holding options to customize the handler behavior
     *
     * @private
     */
    private options;
    /**
     * container for the manual map that has been written by the client
     *
     * @private
     */
    private manualMap;
    /**
     * @private
     * A member to hold next middleware in the middleware chain
     */
    private nextMiddleware;
    /**
     * @public
     * @constructor
     * To create an instance of Testing Handler
     * @param {ChaosHandlerOptions} [options = new ChaosHandlerOptions()] - The testing handler options instance
     * @param manualMap - The Map passed by user containing url-statusCode info
     * @returns An instance of Testing Handler
     */
    constructor(options?: ChaosHandlerOptions, manualMap?: Map<string, Map<string, number>>);
    /**
     * Generates responseHeader
     * @private
     * @param {ChaosHandlerOptions} chaosHandlerOptions - The ChaosHandlerOptions object
     * @param {string} requestID - request id
     * @param {string} requestDate - date of the request
     * @returns response Header
     */
    private createResponseHeaders;
    /**
     * Generates responseBody
     * @private
     * @param {ChaosHandlerOptions} chaosHandlerOptions - The ChaosHandlerOptions object
     * @param {string} requestID - request id
     * @param {string} requestDate - date of the request
     *  * @returns response body
     */
    private createResponseBody;
    /**
     * creates a response
     * @private
     * @param {ChaosHandlerOptions} chaosHandlerOptions - The ChaosHandlerOptions object
     * @param {Context} context - Contains the context of the request
     */
    private createResponse;
    /**
     * Decides whether to send the request to the graph or not
     * @private
     * @param {ChaosHandlerOptions} chaosHandlerOptions - A ChaosHandlerOptions object
     * @param {Context} context - Contains the context of the request
     * @returns nothing
     */
    private sendRequest;
    /**
     * Fetches a random status code for the RANDOM mode from the predefined array
     * @private
     * @param {string} requestMethod - the API method for the request
     * @returns a random status code from a given set of status codes
     */
    private getRandomStatusCode;
    /**
     * To fetch the relative URL out of the complete URL using a predefined regex pattern
     * @private
     * @param {string} urlMethod - the complete URL
     * @returns the string as relative URL
     */
    private getRelativeURL;
    /**
     * To fetch the status code from the map(if needed), then returns response by calling createResponse
     * @private
     * @param {ChaosHandlerOptions} chaosHandlerOptions - The ChaosHandlerOptions object
     * @param {string} requestURL - the URL for the request
     * @param {string} requestMethod - the API method for the request
     */
    private setStatusCode;
    /**
     * To get the options for execution of the middleware
     * @private
     * @param {Context} context - The context object
     * @returns options for middleware execution
     */
    private getOptions;
    /**
     * To execute the current middleware
     * @public
     * @async
     * @param {Context} context - The context object of the request
     * @returns A Promise that resolves to nothing
     */
    execute(context: Context): Promise<void>;
    /**
     * @public
     * To set the next middleware in the chain
     * @param {Middleware} next - The middleware instance
     * @returns Nothing
     */
    setNext(next: Middleware): void;
}