coupon discount inside the FunnelKit sliding cart

coupon discount inside the FunnelKit sliding cart

/**
 * Show the cumulative coupon discount inside the FunnelKit sliding cart,
 * just above the checkout button.
 */
add_action( 'fkcart_before_checkout_button', 'betterwood_fkcart_discount_anzeigen' );

function betterwood_fkcart_discount_anzeigen() {

    if ( is_null( WC()->cart ) || WC()->cart->is_empty() ) {
        return;
    }

    WC()->cart->calculate_totals();

    $coupon_discount_totals     = WC()->cart->coupon_discount_totals;
    $coupon_discount_tax_totals = WC()->cart->coupon_discount_tax_totals;

    $coupon_discount_totals_value     = 0.0;
    $coupon_discount_totals_tax_value = 0.0;

    foreach ( $coupon_discount_totals as $value ) {
        $coupon_discount_totals_value += $value;
    }

    foreach ( $coupon_discount_tax_totals as $value ) {
        $coupon_discount_totals_tax_value += $value;
    }

    $discount_subtotal_price = WC()->cart->get_subtotal() + WC()->cart->get_subtotal_tax();
    $discount_total_price    = $coupon_discount_totals_value + $coupon_discount_totals_tax_value;

    if ( $discount_subtotal_price > 0 ) {
        $percentage_price = ( 100 * $discount_total_price ) / $discount_subtotal_price;
    } else {
        $percentage_price = 0;
    }

    if ( $discount_total_price <= 0.0 ) {
        return;
    }
    ?>
    <div class="fkcart-mengenrabatt-row" style="display:flex; justify-content:space-between; align-items:center; padding:8px 16px; font-size:14px;">
        <span><?php echo number_format( $percentage_price, 0 ); ?>% <?php esc_html_e( 'Mengenrabatt', 'woocommerce' ); ?></span>
        <span class="woocommerce-Price-amount amount">
            -<?php echo number_format( $discount_total_price, 2, ',', '.' ); ?>
            <span class="woocommerce-Price-currencySymbol">€</span>
        </span>
    </div>
    <?php
}