public async Task AddToCartAsync(Books book, int amount)
{
var shoppingCartItem =
await _appDbContext.ShoppingCartItems.SingleOrDefaultAsync(
s => s.Book.Id == book.Id && s.ShoppingCartId == ShoppingCartId);
if (shoppingCartItem == null)
{
shoppingCartItem = new ShoppingCartItem
{
ShoppingCartId = ShoppingCartId,
Book = book,
Amount = 1
};
_appDbContext.ShoppingCartItems.Add(shoppingCartItem);
}
else
{
shoppingCartItem.Amount++;
}
await _appDbContext.SaveChangesAsync();
}
public async Task SaveChangesAsync()
{
await _context.SaveChangesAsync();
}