DocSpace-client/common/services/ASC.AuditTrail/Repositories/AuditEventsRepository.cs

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using System;
using System.Collections.Generic;
using System.Linq;

using ASC.AuditTrail.Models;
using ASC.Common;
using ASC.Core.Common.EF;
using ASC.Core.Common.EF.Context;

using AutoMapper;

namespace ASC.AuditTrail.Repositories
{
    [Scope]
    public class AuditEventsRepository
    {
        private AuditTrailContext AuditTrailContext => _lazyAuditTrailContext.Value;

        private readonly Lazy<AuditTrailContext> _lazyAuditTrailContext;
        private readonly IMapper _mapper;

        public AuditEventsRepository(
            DbContextManager<AuditTrailContext> dbContextManager,
            IMapper mapper)
        {
            _lazyAuditTrailContext = new Lazy<AuditTrailContext>(() => dbContextManager.Value);
            _mapper = mapper;
        }

        public IEnumerable<AuditEvent> GetLast(int tenant, int chunk) => Get(tenant, null, null, chunk);

        public IEnumerable<AuditEvent> Get(int tenant, DateTime from, DateTime to) => Get(tenant, from, to, null);

        private IEnumerable<AuditEvent> Get(int tenant, DateTime? fromDate, DateTime? to, int? limit)
        {
            var query =
               from q in AuditTrailContext.AuditEvents
               from p in AuditTrailContext.Users.Where(p => q.UserId == p.Id).DefaultIfEmpty()
               where q.TenantId == tenant
               orderby q.Date descending
               select new AuditEventQuery { AuditEvent = q, User = p };

            if (fromDate.HasValue && to.HasValue)
                query = query.Where(q => q.AuditEvent.Date >= fromDate & q.AuditEvent.Date <= to);

            if (limit.HasValue) query = query.Take((int)limit);

            return query.AsEnumerable().Select(_mapper.Map<AuditEvent>).ToList();
        }

        public int GetCount(int tenant, DateTime? from = null, DateTime? to = null)
        {
            IQueryable<Core.Common.EF.Model.AuditEvent> query = AuditTrailContext.AuditEvents
                .Where(a => a.TenantId == tenant)
                .OrderByDescending(a => a.Date);

            if (from.HasValue && to.HasValue)
                query = query.Where(a => a.Date >= from & a.Date <= to);

            return query.Count();
        }
    }
}