/**

* -------------------------------------------------------------------------------------------

* Copyright (c) Microsoft Corporation. All Rights Reserved. Licensed under the MIT License.

* See License in the project root for license information.

* -------------------------------------------------------------------------------------------

*/

/**

* @module HTTPClient

*/

import { Context } from "./IContext";

import { FetchOptions } from "./IFetchRequest";

import { Middleware } from "./IMiddleware";

import { MiddlewareOptions } from "./IMiddlewareOptions";

/**

* @class

* Class representing HTTPClient

*/

export class HTTPClient {

/**

* @private

* A member holding first middleware of the middleware chain

*/

private middleware: Middleware;

/**

* @constructor

* Creates an instance of a HTTPClient

* @param {Middleware} middleware - The first middleware of the middleware chain

*/

constructor(middleware: Middleware) {

this.middleware = middleware;

}

/**

* @public

* @async

* To send the request through the middleware chain

* @param {RequestInfo} request - The request url string or the Request instance

* @param {FetchOptions} options - The options of a request

* @param {MiddlewareOptions} middlewareOptions - The options of a middleware chain

* @return A promise that resolves to the response

*/

public async sendRequest(request: RequestInfo, options: FetchOptions, middlewareOptions: MiddlewareOptions): Promise<any> {

let context: Context = {

request,

options,

middlewareOptions

};

await this.middleware.execute(context);

return context;

}

}