// (c) Copyright Ascensio System SIA 2010-2022
//
// This program is a free software product.
// You can redistribute it and/or modify it under the terms
// of the GNU Affero General Public License (AGPL) version 3 as published by the Free Software
// Foundation. In accordance with Section 7(a) of the GNU AGPL 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 details, see
// the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
//
// You can contact Ascensio System SIA at Lubanas st. 125a-25, Riga, Latvia, EU, LV-1021.
//
// The  interactive user interfaces in modified source and object code versions of the Program must
// display Appropriate Legal Notices, as required under Section 5 of the GNU AGPL version 3.
//
// Pursuant to Section 7(b) of the License you must retain the original Product logo when
// distributing the program. Pursuant to Section 7(e) we decline to grant you any rights under
// trademark law for use of our trademarks.
//
// All the Product's GUI elements, including illustrations and icon sets, as well as technical writing
// content are licensed under the terms of the Creative Commons Attribution-ShareAlike 4.0
// International. See the License terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode

using System.Globalization;
using System.Text;

using CsvHelper;

namespace ASC.AuditTrail;

[Scope]
public class AuditReportCreator
{
    private readonly ILogger<AuditReportCreator> _logger;

    public AuditReportCreator(
        ILogger<AuditReportCreator> logger)
    {
        _logger = logger;
    }
    public Stream CreateCsvReport<TEvent>(IEnumerable<TEvent> events) where TEvent : BaseEvent
    {
        try
        {
            var stream = new MemoryStream();
            var writer = new StreamWriter(stream, Encoding.UTF8);
            var csv = new CsvWriter(writer, CultureInfo.CurrentCulture);

            csv.Context.RegisterClassMap(new BaseEventMap<TEvent>());

            csv.WriteHeader<TEvent>();
            csv.NextRecord();
            csv.WriteRecords(events);
            writer.Flush();

            return stream;
        }
        catch (Exception ex)
        {
            _logger.ErrorWhileCreating(ex);
            throw;
        }
    }
}