public async Task <IActionResult> NotificateAboutChanges(string id, string date)
{
var product = await _products.GetDocument(id);
if (product == null)
{
return(Content("Данного товара не существует"));
}
if (product.Subscribers.Count == 0)
{
return(Content("Никто не отслеживает данный товар"));
}
foreach (var _id in product.Subscribers)
{
var subscriber = await _users.GetDocument(_id);
var notificationSettings = subscriber.MonitoredProducts.FirstOrDefault(m => m.ProductId == id).NotificationSettings;
var productChanges = new ProductChanges()
{
Price = product.History.FirstOrDefault(p => p.Date == date).Price,
Available = product.Available
};
var changes = new ChangeTrackingArgs()
{
UserEmail = subscriber.Email,
NotificationSettings = notificationSettings,
ProductChanges = productChanges,
ProductName = product.Name
};
ChangeTracked(changes);
}
return(Content("Запрос обработан"));
}
private void ChangeTrackedHandler(ChangeTrackingArgs args)
{
string notificationMessage;
if (Convert.ToInt32(args.NotificationSettings.NecessaryPrice) >= args.ProductChanges.Price && args.NotificationSettings.Sign == Sign.LessOrEqual ||
Convert.ToInt32(args.NotificationSettings.NecessaryPrice) <= args.ProductChanges.Price && args.NotificationSettings.Sign == Sign.BiggerOrEqual)
{
notificationMessage = EmailNotificationSender.GenerateNotificationMessage(args.NotificationSettings.Availability,
args.NotificationSettings.PriceChanging, args.ProductChanges.Available, args.ProductChanges.Price, args.ProductName);
}
else
{
notificationMessage = EmailNotificationSender.GenerateNotificationMessage(args.NotificationSettings.Availability,
args.NotificationSettings.PriceChanging, args.ProductChanges.Available, null, args.ProductName);
}
_notificationSender.Send(notificationMessage, args.UserEmail);
}