using FrameworkDAL.DTO.ChangeTracking;
using System;
using System.Collections.Generic;

namespace FrameworkDAL.DTO.AuditQuery
{
    /// <summary>
    /// Projection of a TEVENTLOG row with optional field-level changes.
    /// <see cref="Changes"/> is populated by AuditQueryBLL when
    /// the caller requests change detail (e.g. GetAuditByEntity).
    /// </summary>
    public sealed class AuditEventDTO
    {
        public int      EventLogId          { get; set; }
        public int      EventTypeId         { get; set; }
        public string?  EventTypeName       { get; set; }
        public string?  EventTypeCode       { get; set; }
        public int      UserId              { get; set; }
        public string?  UserName            { get; set; }
        public string?  UserCode            { get; set; }
        public string?  EventText           { get; set; }
        public string?  Data                { get; set; }
        /// <summary>TEVENTLOG.SOURCEID — maps to BizTransactionType.</summary>
        public int?     SourceId            { get; set; }
        public string?  SourceName          { get; set; }
        /// <summary>TEVENTLOG.DATAID — PK of the entity that triggered this event.</summary>
        public int?     DataId              { get; set; }
        public int?     OuId                { get; set; }
        public string?  OuName              { get; set; }
        public string?  MachineIp           { get; set; }
        public DateTime Timestamp           { get; set; }
        public string?  Tags                { get; set; }

        /// <summary>
        /// Field-level changes for this event.
        /// Populated when the caller requests change detail.
        /// Empty list when the event was an INSERT or when no changes were tracked.
        /// </summary>
        public List<ChangeTrackingDTO> Changes { get; set; } = [];
    }
}