/*
 *
 * (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.Text.RegularExpressions;

using ASC.Common.Logging;
using ASC.Core.Common.Notify;
using ASC.Notify.Messages;

using Microsoft.Extensions.Options;

namespace ASC.Core.Notify.Senders
{
    public class TelegramSender : INotifySender
    {
        private readonly ILog log;
        private TelegramHelper TelegramHelper { get; }

        public TelegramSender(IOptionsMonitor<ILog> options, TelegramHelper telegramHelper)
        {
            log = options.Get("ASC");
            TelegramHelper = telegramHelper;
        }


        public void Init(IDictionary<string, string> properties)
        {
        }

        public NoticeSendResult Send(NotifyMessage m)
        {
            if (!string.IsNullOrEmpty(m.Content))
            {
                m.Content = m.Content.Replace("\r\n", "\n").Trim('\n', '\r', ' ');
                m.Content = Regex.Replace(m.Content, "\n{3,}", "\n\n");
            }
            try
            {
                TelegramHelper.SendMessage(m);
            }
            catch (Exception e)
            {
                log.ErrorFormat("Unexpected error, {0}, {1}, {2}",
                       e.Message, e.StackTrace, e.InnerException != null ? e.InnerException.Message : string.Empty);
            }
            return NoticeSendResult.OK;
        }
    }
}