public override async Task <CartModel> DoHandleRequest(UpdateCartItemsRequest request, CancellationToken cancellationToken)
{
var currentCart = await RecipeDomainContext.GetCurrentCart(request.User);
if (currentCart == null)
{
throw new NoCurrentCartException($"No current cart exists [User ID = {request.User.Id}");
}
var cartItems = request.CartItemUpdates.Select(i => new CartItem()
{
CartId = currentCart.Id,
CreatedAt = DateTime.UtcNow,
IngredientId = i.IngredientId
});
currentCart.Items = cartItems.ToList();
await RecipeDomainContext.SaveChangesAsync();
// Refresh the current cart entity
currentCart = await RecipeDomainContext.GetCurrentCart(request.User);
return(CartModel.From(currentCart));
}
/// <inheritdoc/>
public override async Task <CartModel> Handle(GetCurrentCartQuery request, CancellationToken cancellationToken)
{
var cart = await RecipeDomainContext.GetCurrentCart(request.User);
return(cart == null ?
throw new NoCurrentCartException($"No current cart exists [User ID = {request.User.Id}]") :
CartModel.From(cart));
}
public override async Task <Unit> Handle(DeleteRecipeByIdRequest request, CancellationToken cancellationToken)
{
var recipeToRemove = await RecipeDomainContext
.GetRecipesForUser(request.User)
.FirstOrDefaultAsync(r => r.Id == request.RecipeId);
if (recipeToRemove != null)
{
// First, remove any cart items associated with ingredients from this recipe.
var ingredientIds = new HashSet <Guid>(
recipeToRemove.Ingredients.Select(i => i.Id));
var cart = await RecipeDomainContext.GetCurrentCart(request.User);
cart.Items = cart.Items.Where(ci => !ingredientIds.Contains(ci.Ingredient.Id)).ToList();
// Now, delete the recipe.
RecipeDomainContext.Recipes.Remove(recipeToRemove);
await RecipeDomainContext.SaveChangesAsync();
}
return(Unit.Value);
}
