How the Fee Is Calculated

The extension automatically calculates COD fee using the following logic:

1. Customer selects COD during checkout.
2. Subtotal is fetched using cart->getSubTotal().
3. System checks:
   • whether minimum amount is satisfied
   • whether maximum amount is satisfied
4. If conditions match, the COD fee is added to:
   • $totals[]
   • $total

If any condition fails, the fee is not added.