public async Task <IActionResult> AddToBasket(int productId, string username)
{
if (!_signInManager.IsSignedIn(User))
{
return(RedirectToAction("Login", "Account"));
}
//Get user's basket by username
Basket basket = await _basketManager.FindBasketByUserLazy(username);
// If basket for user doesn't exist yet, create one
if (basket == null)
{
basket = new Basket()
{
ID = 0,
UserName = username,
Subtotal = 0,
BasketItems = new List <BasketItem>()
};
await _basketManager.CreateBasket(basket);
// Gets the new basket with assigned ID from DB
basket = await _basketManager.FindBasketByUserLazy(username);
}
// Check basketitems basket ID and product ID
BasketItem basketItem = await _basketItemManager.FindBasketItem(basket.ID, productId);
// If item doesn't already exist, create it; otherwise update it
if (basketItem == null)
{
basketItem = new BasketItem()
{
ID = 0,
BasketID = basket.ID,
ProductID = productId,
Quantity = 1
};
await _basketItemManager.CreateBasketItem(basketItem);
}
else
{
basketItem.Quantity++;
await _basketItemManager.UpdateBasketItem(basketItem);
}
// Redirect to Shop action on Shop page
return(RedirectToAction("Shop", "Shop"));
}