refactored code more beautifully

Layout/default/WarehouseOffer/PDF_MAIN.php

@@ -42,33 +42,22 @@ $text = $texts[$lang];
 
 // --- Calculations ---
 $discountAmount = 0;
-$subTotalAfterDiscount = $subTotal; // Initialize subTotalAfterDiscount with the initial subTotal
-$discountPercentage = 0; // Initialize discount percentage to 0
+$subTotalAfterDiscount = $subTotal;
+$vatAmount = 0;
 
-// Check if a discount is applied
 if (isset($offer->totalDiscount) && $offer->totalDiscount > 0) {
     $discountPercentage = $offer->totalDiscount;
-    // Calculate the discount amount and round it to 2 decimal places
-    // Using PHP_ROUND_HALF_UP for consistent rounding (e.g., 0.005 rounds up to 0.01)
     $discountAmount = round(($subTotal * $discountPercentage) / 100, 2, PHP_ROUND_HALF_UP);
-
-    // Calculate the subtotal after applying the discount and round it to 2 decimal places
     $subTotalAfterDiscount = round($subTotal - $discountAmount, 2, PHP_ROUND_HALF_UP);
 }
 
-$vatAmount = 0;
-$grandTotal = $subTotalAfterDiscount; // Initialize grandTotal with the subtotal after discount
+$grandTotal = $subTotalAfterDiscount;
 
-// Check if tax should be included
 if ($includeTax) {
-    // Calculate the VAT amount and round it to 2 decimal places
     $vatAmount = round($subTotalAfterDiscount * $vatRate, 2, PHP_ROUND_HALF_UP);
-
-    // Calculate the final grand total by adding VAT and round it to 2 decimal places
     $grandTotal = round($subTotalAfterDiscount + $vatAmount, 2, PHP_ROUND_HALF_UP);
 }
 
-// Format dates (these calculations are not monetary and don't need rounding)
 $formattedOfferDate = date("d.m.Y", $offerDate);
 $formattedValidUntil = date("d.m.Y", strtotime("+14 days", $offerDate));