DocSpace-client/common/services/ASC.AuditTrail/LoginEventsRepository.cs

/*
 *
 * (c) Copyright Ascensio System Limited 2010-2020
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 * General Public License (GPL) version 3 as published by the Free Software Foundation (https://www.gnu.org/copyleft/gpl.html). 
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using System;
using System.Collections.Generic;
using System.Linq;

using ASC.AuditTrail.Mappers;
using ASC.Common;
using ASC.Core.Common.EF;
using ASC.Core.Common.EF.Context;
using ASC.Core.Common.EF.Model;
using ASC.Core.Users;

using Newtonsoft.Json;

namespace ASC.AuditTrail.Data
{
    [Scope]
    public class LoginEventsRepository
    {
        private UserFormatter UserFormatter { get; }
        private AuditActionMapper AuditActionMapper { get; }
        private MessagesContext MessagesContext { get => LazyMessagesContext.Value; }
        private Lazy<MessagesContext> LazyMessagesContext { get; }

        public LoginEventsRepository(UserFormatter userFormatter, AuditActionMapper auditActionMapper, DbContextManager<MessagesContext> dbMessagesContext)
        {
            UserFormatter = userFormatter;
            AuditActionMapper = auditActionMapper;
            LazyMessagesContext = new Lazy<MessagesContext>(() => dbMessagesContext.Value);
        }

        private sealed class Query
        {
            public LoginEvents LoginEvents { get; set; }
            public User User { get; set; }
        }

        public IEnumerable<LoginEvent> GetLast(int tenant, int chunk)
        {
            var query =
                (from b in MessagesContext.LoginEvents
                 from p in MessagesContext.Users.AsQueryable().Where(p => b.UserId == p.Id).DefaultIfEmpty()
                 where b.TenantId == tenant
                 orderby b.Date descending
                 select new Query { LoginEvents = b, User = p })
                .Take(chunk);

            return query.AsEnumerable().Select(ToLoginEvent).ToList();
        }

        public IEnumerable<LoginEvent> Get(int tenant, DateTime fromDate, DateTime to)
        {
            var query =
                from q in MessagesContext.LoginEvents
                from p in MessagesContext.Users.AsQueryable().Where(p => q.UserId == p.Id).DefaultIfEmpty()
                where q.TenantId == tenant
                where q.Date >= fromDate
                where q.Date <= to
                orderby q.Date descending
                select new Query { LoginEvents = q, User = p };

            return query.AsEnumerable().Select(ToLoginEvent).ToList();
        }

        public int GetCount(int tenant, DateTime? from = null, DateTime? to = null)
        {
            var query = MessagesContext.LoginEvents
                .AsQueryable()
                .Where(l => l.TenantId == tenant);

            if (from.HasValue && to.HasValue)
            {
                query = query.Where(l => l.Date >= from && l.Date <= to);
            }

            return query.Count();
        }

        private LoginEvent ToLoginEvent(Query query)
        {
            var evt = new LoginEvent
            {
                Id = query.LoginEvents.Id,
                IP = query.LoginEvents.Ip,
                Login = query.LoginEvents.Login,
                Browser = query.LoginEvents.Browser,
                Platform = query.LoginEvents.Platform,
                Date = query.LoginEvents.Date,
                TenantId = query.LoginEvents.TenantId,
                UserId = query.LoginEvents.UserId,
                Page = query.LoginEvents.Page,
                Action = query.LoginEvents.Action
            };

            if (query.LoginEvents.Description != null)
            {
                evt.Description = JsonConvert.DeserializeObject<IList<string>>(
                    query.LoginEvents.Description,
                    new JsonSerializerSettings
                    {
                        DateTimeZoneHandling = DateTimeZoneHandling.Utc
                    });
            }
            evt.UserName = (!string.IsNullOrEmpty(query.User?.FirstName) && !string.IsNullOrEmpty(query.User?.LastName))
                                ? UserFormatter.GetUserName(query.User.FirstName, query.User.LastName)
                                : !string.IsNullOrWhiteSpace(evt.Login)
                                        ? evt.Login
                                        : evt.UserId == Core.Configuration.Constants.Guest.ID
                                            ? AuditReportResource.GuestAccount
                                            : AuditReportResource.UnknownAccount;

            evt.ActionText = AuditActionMapper.GetActionText(evt);
            return evt;
        }
    }
}