using System.ComponentModel.DataAnnotations;

namespace JobsMedical.Web.Models;

/// <summary>
/// An anonymous visitor, identified by a cookie before they ever log in. This lets us track
/// interest and personalize from the very first visit; once the person logs in we link the
/// Visitor to their <see cref="User"/> and keep all the behavioral history.
/// </summary>
public class Visitor
{
    [MaxLength(36)]
    public string Id { get; set; } = "";             // GUID string stored in the hk_vid cookie

    public int? UserId { get; set; }                  // set after login (history carries over)
    public User? User { get; set; }

    public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
    public DateTime LastSeenAt { get; set; } = DateTime.UtcNow;

    public UserPreferences? Preferences { get; set; }
    public ICollection<InterestEvent> Events { get; set; } = new List<InterestEvent>();
}