Completed Cart page design

MidrandBookshop/Services/ShoppingCart/CartService.cs

@@ -14,6 +14,9 @@ public sealed class CartService(LocalStorageService localStorage)
 
     public event Action? OnCartChanged;
 
+    public static Func<Cart, long, int> GetCartItemQuantity = (shoppingCart, productPriceId) =>
+        shoppingCart.Items.FirstOrDefault(p => p.Price!.Id == productPriceId)?.Quantity ?? 1;
+
     public Cart GetCart() => ShoppingCart;
 
     public void NotifyStateChanged() => OnCartChanged?.Invoke();
@@ -123,7 +126,7 @@ public sealed class CartService(LocalStorageService localStorage)
     {
         if(ShoppingCart.CustomerId is not null || ShoppingCart.OrderId is not null)
         {
-            ShoppingCart.TotalPrice = 0;
+            ShoppingCart.TotalAmount = 0;
             ShoppingCart.TotalVat = 0;
             ShoppingCart.Items.Clear();
 
@@ -143,8 +146,8 @@ public sealed class CartService(LocalStorageService localStorage)
 
         if (!ShoppingCart.IsVatInclusive) ShoppingCart.TotalVat = gross * ShoppingCart.VatRate;
 
-        ShoppingCart.TotalPrice = gross + ShoppingCart.TotalVat;
+        ShoppingCart.TotalAmount = gross + ShoppingCart.TotalVat;
 
-        return ShoppingCart.TotalPrice;
+        return ShoppingCart.TotalAmount;
     }
 }

MidrandBookshop/Services/ShoppingCart/Models/Cart.cs

@@ -6,7 +6,7 @@ public sealed class Cart
 
     public long? OrderId { get; set; }
 
-    public decimal TotalPrice { get; set; }
+    public decimal TotalAmount { get; set; }
 
     public decimal TotalVat { get; set; }