using FreeSql.DataAnnotations;
using F9WebAiTest.Domain.Common;

namespace F9WebAiTest.Domain.Entities.Notice;

/// <summary>用户订阅（用户主动订阅/取消，保留历史）</summary>
[Table(Name = "UserNotificationSubscriptions")]
[Index("IX_UserNotificationSubscriptions_UserId_NotificationTypeId", "UserId, NotificationTypeId", IsUnique = true)]
public class UserNotificationSubscription : BaseEntity
{
    public long UserId { get; set; }               // 订阅用户ID
    public long NotificationTypeId { get; set; }   // 消息类型ID
    public bool IsActive { get; set; } = true;     // 订阅状态：true=已订阅 false=已取消
    public DateTime SubscribedTime { get; set; } = DateTime.Now; // 订阅时间
    public DateTime? CancelTime { get; set; }      // 取消订阅时间
}