public async Task UpdateMenuItem(RestaurantsMenu menuItem)
{
var currentMenuItem = restaurantsDbContext.RestaurantsMenu.Single(mi => mi.Id == menuItem.Id);
decimal?currentMenuItemPrice = currentMenuItem.Price;
currentMenuItem.Description = menuItem.Description;
currentMenuItem.IdDishType = menuItem.IdDishType;
currentMenuItem.IdRestaurant = menuItem.IdRestaurant;
currentMenuItem.Name = menuItem.Name;
currentMenuItem.Price = menuItem.Price;
currentMenuItem.Promo = menuItem.Promo;
await restaurantsDbContext.SaveChangesAsync();
if (menuItem.Price.Value != currentMenuItemPrice.Value)
{
var priceChangedEvent = new PriceChangedEvent
{
itemId = menuItem.Id,
restaurantId = menuItem.IdRestaurant,
newPrice = menuItem.Price.Value
};
restaurantEventManager.ProductPriceChanged(priceChangedEvent);
}
}
private ExistingFlight GetDiscount(ExistingFlight existingFlight, int luckyNumber)
{
if (random.Next(1, 10) == luckyNumber)
{
existingFlight.Price *= _discound;
PriceChangedEvent?.Invoke();
}
return(existingFlight);
}
public void ProductPriceChanged(PriceChangedEvent priceChanged)
{
IBasicProperties props = _channel.CreateBasicProperties();
props.Type = nameof(PriceChangedEvent);
var body = MessageSerializationHelper.SerializeObjectToBin(priceChanged);
_channel.BasicPublish(exchange: string.Empty,
routingKey: ApplicationEvents.BasketQueue,
basicProperties: props,
body: body);
}
public void ProductPriceChanged(PriceChangedEvent priceChanged)
{
using (var connection = cFactory.CreateConnection())
using (var channel = connection.CreateModel())
{
IBasicProperties props = channel.CreateBasicProperties();
props.Type = nameof(PriceChangedEvent);
var body = MessageSerializationHelper.SerializeObjectToBin(priceChanged);
channel.BasicPublish(exchange: string.Empty,
routingKey: ApplicationEvents.BasketQueue,
basicProperties: props,
body: body);
}
}
private void HandlePriceChangedEvent(PriceChangedEvent e)
{
using (var scope = _serviceScopeFactory.CreateScope())
{
IBasketService basketService = scope.ServiceProvider.GetRequiredService <IBasketService>();
var keys = basketService.GetItems();
foreach (var key in keys)
{
var basket = basketService.GetBasket(int.Parse(key));
if (basket.Result.restaurantId == e.restaurantId && basket.Result.basketItems.Any(ba => ba.menuItemId == e.itemId))
{
basketService.UpdateItem(int.Parse(key), e.itemId, e.newPrice);
}
}
}
}
private void OnFuelPriceChange(object sender, PriceChangedEvent e)
{
log.Debug("GradesViewModel: Fuel price is changed.Get grades.");
GetGrades();
}
