Created
December 2, 2016 00:24
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public class AddToCartHandler : ICancellableAsyncRequestHandler<AddToCart, Unit> | |
{ | |
private readonly IMediator _mediator; | |
private readonly MusicStoreContext _dbContext; | |
public AddToCartHandler(IMediator mediator, MusicStoreContext dbContext) | |
{ | |
_mediator = mediator; | |
_dbContext = dbContext; | |
} | |
public async Task<Unit> Handle(AddToCart message, CancellationToken cancellationToken) | |
{ | |
// Retrieve the album from the database | |
var addedAlbum = await _dbContext.Albums | |
.SingleAsync(album => album.AlbumId == message.AlbumId, cancellationToken); | |
// Add it to the shopping cart | |
var cart = Models.ShoppingCart.GetCart(_dbContext, message.CartId); | |
await cart.AddToCart(addedAlbum); | |
await _dbContext.SaveChangesAsync(cancellationToken); | |
_mediator.Publish(new AlbumAddedToCart(addedAlbum.AlbumId)); | |
return Unit.Value; | |
} | |
} |
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