public async Task <int> InsertAsync(Item newEntity)
{
await _items.AddAsync(newEntity);
await _context.SaveChangesAsync();
return(newEntity.Id);
}
public async Task <bool> AddToCart(CartItem cartItem)
{
await _entities.CartItem.AddAsync(cartItem);
await _entities.SaveChangesAsync();
if (cartItem.Id < 1)
{
_logger.LogError(new EventId(), "Id less than 0 for CartItem: {@ci}", cartItem.Id);
}
return(cartItem.Id > 0);
}
public virtual async Task <long> Add()
{
var newUser = new User {
Basket = new Basket()
};
_context.Users.Add(newUser);
await _context.SaveChangesAsync();
return(newUser.Id);
}
public virtual async Task <Invoice> Add(long userId)
{
var user =
await _context.Users
.Include(x => x.Basket.Items)
.ThenInclude(y => y.Item)
.SingleOrDefaultAsync(x => x.Id == userId);
foreach (var item in user.Basket.Items)
{
item.Item.Stock = item.Item.Stock - item.Quantity;
if (item.Item.Stock < 0)
{
throw new Exception(); // handle this properly
}
}
var order = new Order
{
User = user,
Items = user.Basket.Items.Select(x => new OrderItem
{
Item = x.Item,
Quantity = x.Quantity
}).ToList()
};
_context.Orders.Add(order);
user.Basket.Items = new List <BasketItem>();
await _context.SaveChangesAsync();
return(new Invoice
{
Lines = order.Items.Select(x => new InvoiceLine {
ItemId = x.Item.Id,
Name = x.Item.Name,
Price = x.Item.Price,
Quantity = x.Quantity
}),
Total = order.Items.Select(x => x.Item.Price).Sum()
});
}
public virtual async Task <Basket> AddItemsToBasket(long userId, IEnumerable <BasketItemDto> items)
{
var user =
await _context.Users
.Include(x => x.Basket.Items)
.ThenInclude(y => y.Item)
.SingleOrDefaultAsync(x => x.Id == userId);
// handle invalid user id
foreach (var basketItem in items)
{
var item = await _context.Items.SingleOrDefaultAsync(x => x.Id == basketItem.ItemId);
//handle invalid item id
var itemInBasket = user.Basket.Items.SingleOrDefault(x => x.Item.Id == basketItem.ItemId);
if (ItemCanBeAdded(item, basketItem.Quantity, itemInBasket))
{
if (itemInBasket == null)
{
user.Basket.Items.Add(new BasketItem
{
Item = item,
Quantity = basketItem.Quantity
});
}
else
{
itemInBasket.Quantity = itemInBasket.Quantity + basketItem.Quantity;
}
}
}
await _context.SaveChangesAsync();
return(user.Basket);
}
