Метод, отдающий количество непрочитанных уведомлений

AsbCloudApp/Repositories/INotificationRepository.cs

@@ -1,8 +1,8 @@
-using System.Threading;
-using System.Threading.Tasks;
 using AsbCloudApp.Data;
 using AsbCloudApp.Requests;
 using AsbCloudApp.Services;
+using System.Threading;
+using System.Threading.Tasks;
 
 namespace AsbCloudApp.Repositories;
 
@@ -21,4 +21,13 @@ public interface INotificationRepository : ICrudRepository<NotificationDto>
     Task<PaginationContainer<NotificationDto>> GetNotificationsAsync(int idUser,
         NotificationRequest request,
         CancellationToken cancellationToken);
+
+    /// <summary>
+    /// Получение количества непрочтенных уведомлений
+    /// </summary>
+    /// <param name="idUser"></param>
+    /// <param name="cancellationToken"></param>
+    /// <returns></returns>
+    Task<int> GetUnreadCountAsync(int idUser,
+        CancellationToken cancellationToken);
 }

AsbCloudInfrastructure/Repository/NotificationRepository.cs

@@ -54,6 +54,17 @@ public class NotificationRepository : CrudRepositoryBase<NotificationDto, Notifi
 		return result;
 	}
 
+
+    public async Task<int> GetUnreadCountAsync(int idUser, CancellationToken cancellationToken)
+    {
+		var count = await dbContext.Notifications
+			.Where(n => n.ReadDate == null)
+			.Where(n => n.IdUser == idUser)
+			.CountAsync(cancellationToken);
+
+		return count;
+    }
+
     private IQueryable<Notification> BuildQuery(int idUser, 
 		NotificationRequest request)
 	{

AsbCloudWebApi/Controllers/NotificationController.cs

@@ -111,6 +111,26 @@ public class NotificationController : ControllerBase
 		return Ok(result);
 	}
 
+    /// <summary>
+    /// Получение количества непрочитанных уведомлений
+    /// </summary>
+    /// <param name="cancellationToken"></param>
+    /// <returns></returns>
+    [HttpGet]
+    [Route("unreadNotificationCount")]
+	[ProducesResponseType(typeof(int), (int)System.Net.HttpStatusCode.OK)]
+    public async Task<IActionResult> GetUnreadCountAsync(CancellationToken cancellationToken)
+    {
+        int? idUser = User.GetUserId();
+
+        if (!idUser.HasValue)
+            return Forbid();
+
+        var result = await notificationRepository.GetUnreadCountAsync(idUser.Value, cancellationToken);
+
+        return Ok(result);
+    }
+
     /// <summary>
     /// Удаление уведомления
     /// </summary>