From c7bd78e98a09034b80844f15a2053e2deb58bcfa Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Einar=20Sk=C3=B8ien?= <einaskoi@stud.ntnu.no>
Date: Mon, 23 Feb 2026 11:49:45 +0100
Subject: [PATCH] implement logic in the PurchaseCalculator class

---
 .../gruppe42/Model/Calculator/PurchaseCalculator.java    | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/src/main/java/edu/ntnu/idi/idatt2003/gruppe42/Model/Calculator/PurchaseCalculator.java b/src/main/java/edu/ntnu/idi/idatt2003/gruppe42/Model/Calculator/PurchaseCalculator.java
index efac008..53cd906 100644
--- a/src/main/java/edu/ntnu/idi/idatt2003/gruppe42/Model/Calculator/PurchaseCalculator.java
+++ b/src/main/java/edu/ntnu/idi/idatt2003/gruppe42/Model/Calculator/PurchaseCalculator.java
@@ -14,21 +14,22 @@ public PurchaseCalculator(Share share) {
 
   @Override
   public BigDecimal calculateGross() {
-    return null;
+    return purchasePrice.multiply(quantity);
   }
 
   @Override
   public BigDecimal calculateCommission() {
-    return null;
+    BigDecimal commissionRate = new BigDecimal("0.01");
+    return calculateGross().multiply(commissionRate);
   }
 
   @Override
   public BigDecimal calculateTax() {
-    return null;
+    return BigDecimal.ZERO;
   }
 
   @Override
   public BigDecimal calculateTotal() {
-    return null;
+    return calculateGross().add(calculateCommission()).add(calculateTax());
   }
 }