public async Task <bool> RemoveFromCart(SKU sku, SKUOption skuOption)
{
var shoppingCartItemFromDb =
await _context.ShoppingCartItems
.SingleOrDefaultAsync(x => x.ShoppingCartId == CartId && x.SKUId == sku.Id && x.SKUOptionId == skuOption.Id);
if (shoppingCartItemFromDb == null)
{
return(false);
}
_context.Remove(shoppingCartItemFromDb);
await _context.SaveChangesAsync();
return(true);
}
public async Task <bool> IncreaseQuantity(SKU sku, SKUOption skuOption)
{
var shoppingCartItemFromDb =
await _context.ShoppingCartItems
.SingleOrDefaultAsync(x => x.ShoppingCartId == CartId && x.SKUId == sku.Id && x.SKUOptionId == skuOption.Id);
if (shoppingCartItemFromDb == null)
{
return(false);
}
if (shoppingCartItemFromDb.Amount == skuOption.Stock)
{
return(false);
}
shoppingCartItemFromDb.Amount++;
await _context.SaveChangesAsync();
return(true);
}
public async Task <bool> AddToCart(SKU sku, SKUOption skuOption)
{
var shoppingCartItemFromDb = await
_context.ShoppingCartItems
.SingleOrDefaultAsync(x => x.ShoppingCartId == CartId && x.SKUId == sku.Id && x.SKUOptionId == skuOption.Id);
if (shoppingCartItemFromDb == null)
{
if (skuOption.Stock == 0)
{
return(false);
}
var shoppingCartItem = new ShoppingCartItem
{
SKUId = sku.Id,
SKUOptionId = skuOption.Id,
Amount = 1,
ShoppingCartId = CartId,
Date = DateTime.Now
};
_context.Add(shoppingCartItem);
}
else
{
if (shoppingCartItemFromDb.Amount == skuOption.Stock)
{
return(false);
}
shoppingCartItemFromDb.Amount++;
}
await _context.SaveChangesAsync();
return(true);
}
public async Task <bool> DecreaseQuantity(SKU sku, SKUOption skuOption)
{
var shoppingCartItemFromDb =
await _context.ShoppingCartItems
.SingleOrDefaultAsync(x => x.ShoppingCartId == CartId && x.SKUId == sku.Id && x.SKUOptionId == skuOption.Id);
if (shoppingCartItemFromDb == null)
{
return(false);
}
if (shoppingCartItemFromDb.Amount > 1)
{
shoppingCartItemFromDb.Amount--;
}
else
{
_context.Remove(shoppingCartItemFromDb);
}
await _context.SaveChangesAsync();
return(true);
}
