/*
 *
 * (c) Copyright Ascensio System Limited 2010-2018
 *
 * This program is freeware. You can redistribute it and/or modify it under the terms of the GNU 
 * General Public License (GPL) version 3 as published by the Free Software Foundation (https://www.gnu.org/copyleft/gpl.html). 
 * In accordance with Section 7(a) of the GNU GPL its Section 15 shall be amended to the effect that 
 * Ascensio System SIA expressly excludes the warranty of non-infringement of any third-party rights.
 *
 * THIS PROGRAM IS DISTRIBUTED WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED WARRANTY OF MERCHANTABILITY OR
 * FITNESS FOR A PARTICULAR PURPOSE. For more details, see GNU GPL at https://www.gnu.org/copyleft/gpl.html
 *
 * You can contact Ascensio System SIA by email at sales@onlyoffice.com
 *
 * The interactive user interfaces in modified source and object code versions of ONLYOFFICE must display 
 * Appropriate Legal Notices, as required under Section 5 of the GNU GPL version 3.
 *
 * Pursuant to Section 7 § 3(b) of the GNU GPL you must retain the original ONLYOFFICE logo which contains 
 * relevant author attributions when distributing the software. If the display of the logo in its graphic 
 * form is not reasonably feasible for technical reasons, you must include the words "Powered by ONLYOFFICE" 
 * in every copy of the program you distribute. 
 * Pursuant to Section 7 § 3(e) we decline to grant you any rights under trademark law for use of our trademarks.
 *
*/


using System;
using System.Collections.Generic;
using System.IO;
using System.Net.Http;
using System.Text;

namespace ASC.FederatedLogin.Helpers
{
    public class RequestHelper
    {
        public static string PerformRequest(string uri, string contentType = "", string method = "GET", string body = "", Dictionary<string, string> headers = null, int timeout = 30000)
        {
            if (string.IsNullOrEmpty(uri)) throw new ArgumentNullException("uri");

            var request = new HttpRequestMessage();
            request.RequestUri = new Uri(uri);
            request.Method = new HttpMethod(method);

            using var httpClient = new HttpClient();
            httpClient.Timeout = TimeSpan.FromMilliseconds(timeout);

            if (headers != null)
            {
                foreach (var key in headers.Keys)
                {
                    request.Headers.Add(key, headers[key]);
                }
            }

            var bytes = Encoding.UTF8.GetBytes(body ?? "");
            if (request.Method != HttpMethod.Get && bytes.Length > 0)
            {
                request.Content = new ByteArrayContent(bytes, 0, bytes.Length);
                if (!string.IsNullOrEmpty(contentType))
                {
                    request.Headers.Add("Content-Type", contentType);
                }
            }

            using var response = httpClient.Send(request);
            using var stream = response.Content.ReadAsStream();
            if (stream == null) return null;
            using var readStream = new StreamReader(stream);
            return readStream.ReadToEnd();

        }
    }
}