Split counter-click-index.ts

counter/static/bundled/counter/basket.ts

@@ -0,0 +1,25 @@
+import type { Product } from "#counter:counter/types";
+
+export class BasketItem {
+  quantity: number;
+  product: Product;
+  quantityForTrayPrice: number;
+  errors: string[];
+
+  constructor(product: Product, quantity: number) {
+    this.quantity = quantity;
+    this.product = product;
+    this.errors = [];
+  }
+
+  getBonusQuantity(): number {
+    if (!this.product.hasTrayPrice) {
+      return 0;
+    }
+    return Math.floor(this.quantity / this.product.quantityForTrayPrice);
+  }
+
+  sum(): number {
+    return (this.quantity - this.getBonusQuantity()) * this.product.price;
+  }
+}