public int CreateOrder(ShoppingBag bag, string email)
{
var user = this.GetUser(email);
var order = new Order {
State = State.Received, User = user, Timestamp = DateTime.UtcNow
};
var books = this.GetBooksByIds(bag.BookIds);
foreach (var item in bag.BookIds)
{
var orderItem = new OrderItem {
Order = order, Book = books.Single(x => x.BookId == item), Quantity = bag.Quantity(item)
};
order.Items.Add(orderItem);
}
user.Orders.Add(order);
this._ctx.SaveChanges();
this._diagnosticSource.Write("OnOrderCreated", new { orderId = order.OrderId });
return(order.OrderId);
}