implement a 5% discount for customers who select the “Direct bank transfer”

Hi.

so what i want is when someone select Direct bank transfer, it gives 5% discount and if someone select other than direct bank transfer option he should get 0% discount. how can i implement this in WooCommerce wordpress.

This is the code (generated from ChatGPT, but this code not seem to be working. i tried some plugin as well, they are also not working by this rule. is their some setting in woo plugin which needs to be enabled/disabled…?! what am i missing something. i click on direct bank transfer, cash delivery, nothing happens in order summary, checkout page. same pricing. no discount applied.

Hope someone help me out.

Thank you

// Apply a 5% discount for Direct Bank Transfer payment method in WooCommerce
add_action('woocommerce_cart_calculate_fees', 'apply_discount_for_bank_transfer');

function apply_discount_for_bank_transfer($cart) {
    if (is_admin() && !defined('DOING_AJAX')) return;

    // Check if the selected payment method is Direct Bank Transfer
    $chosen_gateway = WC()->session->get('chosen_payment_method');

    if ($chosen_gateway == 'bacs') { // 'bacs' is the ID for Direct Bank Transfer
        $discount = $cart->get_subtotal() * 0.05; // 5% discount
        $cart->add_fee(__('Bank Transfer Discount', 'woocommerce'), -$discount);
    }
}

// Ensure the discount is updated when the payment method is changed
add_action('wp_footer', 'refresh_cart_on_payment_method_change');

function refresh_cart_on_payment_method_change() {
    if (is_checkout()) {
        ?>
        <script type="text/javascript">
            jQuery(function($) {
                $('form.checkout').on('change', 'input[name^="payment_method"]', function() {
                    $(document.body).trigger('update_checkout');
                });
            });
        </script>
        <?php
    }
}

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