/*
 *
 * (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.Linq;
using ASC.Common.Logging;
using ASC.Core.Common.Notify.Push;
using ASC.Core.Configuration;
using ASC.Notify.Messages;
using ASC.Notify.Sinks;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Options;

namespace ASC.Core.Common.Notify
{
    class PushSenderSink : Sink
    {
        private readonly ILog _log;
        private bool configured = true;

        public PushSenderSink(IServiceProvider serviceProvider)
        {
            ServiceProvider = serviceProvider;
            _log = ServiceProvider.GetService<IOptionsMonitor<ILog>>().CurrentValue;
        }

        private IServiceProvider ServiceProvider { get; }

        public override SendResponse ProcessMessage(INoticeMessage message)
        {
            try
            {
                using var scope = ServiceProvider.CreateScope();
                var tenantManager = scope.ServiceProvider.GetService<TenantManager>();

                var notification = new PushNotification
                {
                    Module = GetTagValue<PushModule>(message, PushConstants.PushModuleTagName),
                    Action = GetTagValue<PushAction>(message, PushConstants.PushActionTagName),
                    Item = GetTagValue<PushItem>(message, PushConstants.PushItemTagName),
                    ParentItem = GetTagValue<PushItem>(message, PushConstants.PushParentItemTagName),
                    Message = message.Body,
                    ShortMessage = message.Subject
                };

                if (configured)
                {
                    try
                    {
                        using var pushClient = new PushServiceClient();
                        pushClient.EnqueueNotification(
                            tenantManager.GetCurrentTenant().TenantId,
                            message.Recipient.ID,
                            notification,
                            new List<string>());
                    }
                    catch (InvalidOperationException)
                    {
                        configured = false;
                        _log.Debug("push sender endpoint is not configured!");
                    }
                }
                else
                {
                    _log.Debug("push sender endpoint is not configured!");
                }

                return new SendResponse(message, Constants.NotifyPushSenderSysName, SendResult.OK);
            }
            catch (Exception error)
            {
                return new SendResponse(message, Constants.NotifyPushSenderSysName, error);
            }
        }

        private T GetTagValue<T>(INoticeMessage message, string tagName)
        {
            var tag = message.Arguments.FirstOrDefault(arg => arg.Tag == tagName);
            return tag != null ? (T)tag.Value : default;
        }
    }
}