public async Task RestaurantRatingChanged(int idRestaurant, decimal newRating)
{
var newRatingEvt = new RatingChangedEvent
{
idRestaurant = idRestaurant
};
using (var scope = _serviceScopeFactory.CreateScope())
{
IReviewService reviewService = scope.ServiceProvider.GetRequiredService <IReviewService>();
var restaurantReviews = await reviewService.GetRestaurantReviews(idRestaurant);
newRatingEvt.averageRating = restaurantReviews.Sum(rw => rw.Rating) / restaurantReviews.Count();
}
IBasicProperties props = _channel.CreateBasicProperties();
props.Type = nameof(RatingChangedEvent);
var body = MessageSerializationHelper.SerializeObjectToBin(newRatingEvt);
_channel.BasicPublish(exchange: string.Empty,
routingKey: ApplicationEvents.RestaurantQueue,
basicProperties: props,
body: body);
}
private async Task HandleRatingEvent(RatingChangedEvent ratingChangedEvent)
{
using (var scope = _serviceScopeFactory.CreateScope())
{
IRestaurantService restaurantService = scope.ServiceProvider.GetRequiredService <IRestaurantService>();
await restaurantService.UpdateRestaurantAverageRating(ratingChangedEvent.idRestaurant, ratingChangedEvent.averageRating);
}
}
