Disallow Store Credit When There Is an Active Coupon in the Cart

/**

 * Hide store credit field when a regular coupon is applied.

 * Also removes any already-applied store credit when a coupon is added.

 */

// PHP: Hide store credit on AJAX checkout refresh when coupon is active

add_filter( 'acfw_is_allow_store_credits', function( $is_allowed ) {

    if ( ! $is_allowed || ! WC()->cart ) {

        return $is_allowed;

    }

    $sc_code = strtolower( (string) apply_filters( 'acfw_store_credit_coupon_code', 'store credit' ) );

    foreach ( WC()->cart->get_applied_coupons() as $code ) {

        if ( strtolower( $code ) !== $sc_code ) {

            return false;

        }

    }

    return $is_allowed;

}, 10, 1 );

// PHP: Remove active store credit when a regular coupon is applied

add_action( 'woocommerce_applied_coupon', function( $coupon_code ) {

    $sc_code = strtolower( (string) apply_filters( 'acfw_store_credit_coupon_code', 'store credit' ) );

    if ( strtolower( $coupon_code ) === $sc_code ) {

        return;

    }

    if ( ! WC()->session || ! WC()->cart ) {

        return;

    }

    WC()->session->set( 'acfw_store_credits_discount', null );

    WC()->session->set( 'acfw_store_credits_coupon_discount', null );

    $applied = WC()->cart->get_applied_coupons();

    $updated = array_values( array_filter( $applied, function( $code ) use ( $sc_code ) {

        return strtolower( $code ) !== $sc_code;

    } ) );

    if ( count( $updated ) < count( $applied ) ) {

        WC()->cart->set_applied_coupons( $updated );

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

    }

}, 10, 1 );

// JS: Immediately show/hide the field on coupon apply/remove (before AJAX refresh)

add_action( 'wp_footer', function() {

    if ( ! is_checkout() ) {

        return;

    }

    ?>

    <script>

    jQuery( function( $ ) {

        function toggleStoreCreditSection() {

            var hasCoupon = $( '.cart-discount' ).length > 0;

            $( '.acfw-accordion.acfw-store-credits-checkout-ui' ).toggle( ! hasCoupon );

        }

        $( document.body ).on( 'applied_coupon removed_coupon updated_checkout', function() {

            toggleStoreCreditSection();

        });

        toggleStoreCreditSection();

    } );

    </script>

    <?php

} );