littleshop/LittleShop/Models/PushSubscription.cs

using System.ComponentModel.DataAnnotations;

namespace LittleShop.Models;

public class PushSubscription
{
    public int Id { get; set; }
    
    [Required]
    public string Endpoint { get; set; } = string.Empty;
    
    [Required]
    public string P256DH { get; set; } = string.Empty;
    
    [Required]
    public string Auth { get; set; } = string.Empty;
    
    public Guid? UserId { get; set; }
    public User? User { get; set; }
    
    public Guid? CustomerId { get; set; }
    public Customer? Customer { get; set; }
    
    public DateTime SubscribedAt { get; set; } = DateTime.UtcNow;
    public DateTime? LastUsedAt { get; set; }
    public bool IsActive { get; set; } = true;
    
    // Browser/device information for identification
    public string? UserAgent { get; set; }

    /// <summary>
    /// IP address from which the subscription was created.
    /// NOTE: NOT technically required for Web Push functionality - stored only for security monitoring.
    /// Consider: May be removed or made optional for privacy/GDPR compliance.
    /// See: IP_STORAGE_ANALYSIS.md for full analysis and recommendations.
    /// </summary>
    public string? IpAddress { get; set; }
}