telegram-bot/modules/RichSiteSummary/Data/Subscriber.cs

// This file is a part of RSS Bot for Telegram.
// License: MIT
// Author: CrazyHackGUT aka Kruzya (Sergey Gut) <kruzefag@gmail.com>
// 

using System;
using System.ComponentModel.DataAnnotations;

namespace Kruzya.TelegramBot.RichSiteSummary.Data;

/// <summary>
/// Represents a subscription in database.
/// </summary>
public class Subscriber
{
    /// <summary>
    /// The unique Subscription identifier.
    /// </summary>
    [Key]
    public Guid SubscriptionId { get; set; }
        
    /// <summary>
    /// The Telegram subscriber id.
    /// </summary>
    [Required]
    public Int64 SubscriberId { get; set; }
        
    /// <summary>
    /// Unique feed identifier related with this Subscription. Identifies what user is read.
    /// </summary>
    public Guid FeedId { get; set; }
        
    /// <summary>
    /// Feed related with this Subscription. Identifies what user is read.
    /// </summary>
    [Required]
    public virtual Feed Feed { get; set; }

    /// <summary>
    /// When user is subscribed on this feed.
    /// </summary>
    [Required]
    public DateTime SubscribedAt { get; set; }

    public Subscriber()
    {
        SubscriptionId = new Guid();
        SubscribedAt = DateTime.Now;
    }

    public Subscriber(Feed feed) : base()
    {
        Feed = feed;
    }
}