using System;
using System.Collections.Generic;

namespace FrameworkDAL.DTO.EIPConversation
{
    /// <summary>
    /// Maps to TEIUSERSESSION.
    /// Persists a user's active conversational flow state across messages.
    /// </summary>
    public class EIPUserSessionDTO
    {
        public System.Guid SessionId { get; set; } = System.Guid.NewGuid();
        public string UserIdentifier { get; set; } = string.Empty;
        public int TenantId { get; set; }

        /// <summary>Matches EIPChannelType enum numeric value.</summary>
        public int ChannelType { get; set; }

        public string FlowCode { get; set; } = string.Empty;
        public string CurrentStepCode { get; set; } = string.Empty;

        /// <summary>JSON-serialized Dictionary&lt;string, object&gt; session context variables.</summary>
        public string? ContextJson { get; set; }

        public DateTime StartedAt { get; set; } = DateTime.UtcNow;
        public DateTime LastActivityAt { get; set; } = DateTime.UtcNow;
    }
}