return totalCartQuantity with cart

Author: Steph Dietz

backend/functions/assembly/crud.ts

@@ -374,5 +374,9 @@ export function getCart(cartId: string): Cart {
     );
     items.push(cartItemObject);
   }
-  return new Cart(cartId, items);
+  const totalCartQuantity = items.reduce<f64>(
+    (acc, item) => acc + item.quantity,
+    0,
+  );
+  return new Cart(cartId, items, totalCartQuantity);
 }

backend/functions/assembly/types.ts

@@ -41,7 +41,7 @@ export class Cart {
   constructor(
     public cartId: string,
     public items: CartItemObject[] = [],
-    public totalQuantity: f64 = 0,
+    public totalCartQuantity: f64 = 0,
   ) {}
 }