Notification Filter

9.Post.DomainNotification.NotificationFilter.cs

public class NotificationFilter : IAsyncResultFilter
{
	private readonly NotificationContext _notificationContext;

	public NotificationFilter(NotificationContext notificationContext)
	{
		_notificationContext = notificationContext;
	}

	public async Task OnResultExecutionAsync(ResultExecutingContext context, ResultExecutionDelegate next)
	{
		if (_notificationContext.HasNotifications)
		{
			context.HttpContext.Response.StatusCode = (int)HttpStatusCode.BadRequest;
			context.HttpContext.Response.ContentType = "application/json";

			var notifications = JsonConvert.SerializeObject(_notificationContext.Notifications);
			await context.HttpContext.Response.WriteAsync(notifications);

			return;
		}

		await next();
	}
}