Express Wallets - Single Button

fkwcs_restrict_buttons.php

<?php
/**
 * Plugin Name: Express Wallets - Single Button (Apple > Google, hide PayPal)
 * Description: Show only ONE express wallet button — Apple Pay if the device supports
 *              it, else Google Pay — and hide the PayPal EXPRESS button whenever a
 *              Stripe wallet is available. Works on product, cart and checkout.
 *
 * We do NOT re-detect wallet support and we do NOT pre-hide anything. FunnelKit Stripe
 * already runs the wallet check and renders the buttons; we only step in AFTER it has
 * finished and hide the ones we don't want. So the worst case is "all buttons show"
 * (the original behaviour) — never "no button".
 *
 * Scope: only the PayPal EXPRESS buttons (product / cart / checkout-top / slide-cart)
 * are hidden. The PayPal payment-method button (#angelleye_ppcp_checkout, shown when a
 * shopper selects PayPal in the checkout payment methods) is left completely alone.
 *
 * Signals we read (all from FunnelKit Stripe):
 *   - data-fkwcs-available="yes" on a wallet's wrapper when it is ready,
 *   - window._fkwcs_gpay_ready_state === true for native Google Pay,
 *   - the `fkwcs_smart_buttons_showed` event (fired when detection is done).
 *
 * Priority: Apple Pay > Google Pay. PayPal express hidden whenever a wallet is available.
 *
 * Note on the layout jump: because we hide the extras after they've painted there can
 * be a small reflow. That is the safe trade-off — pre-hiding off-screen can stop a
 * wallet from ever becoming available, which is worse.
 *
 * Lives in mu-plugins; the plugins themselves are never edited.
 */

defined( 'ABSPATH' ) || exit;

add_action( 'wp_head', 'ewsb_head', 1 );
function ewsb_head() {
	if ( is_admin() ) {
		return;
	}
	echo '<style id="ewsb-style">.ewsb-hide{display:none !important;}</style>' . "\n";
}

add_action( 'wp_footer', 'ewsb_footer', 99 );
function ewsb_footer() {
	if ( is_admin() ) {
		return;
	}
	?>
	<script id="ewsb-js">
	( function ( $ ) {
		if ( ! $ ) { return; }

		var APPLE  = '.fkwcs_express_smart_button_wrapper.fkwcs_apple_pay_button, #wfacp_smart_button_fkwcs_apple_pay, #fkcart_fkwcs_smart_button_apple_pay';
		var GOOGLE = '.fkwcs_express_smart_button_wrapper.fkwcs_google_pay_button, #wfacp_smart_button_fkwcs_stripe_google_pay, #wfacp_smart_button_fkwcs_google_pay, #fkcart_fkwcs_smart_button_google_pay, #fkcart_fkwcs_smart_button_gpay';

		// PayPal EXPRESS placements only. The checkout payment-method button is
		// #angelleye_ppcp_checkout — deliberately NOT listed here, so choosing PayPal
		// as a payment method still renders its button normally.
		var PAYPAL_EXPRESS_IDS = '#angelleye_ppcp_product, #angelleye_ppcp_product_shortcode, #angelleye_ppcp_cart, #angelleye_ppcp_cart_shortcode, #angelleye_ppcp_cart_top, #angelleye_ppcp_checkout_top, #angelleye_ppcp_fkcart';

		function hide( sel ) { $( sel ).addClass( 'ewsb-hide' ); }

		function hidePaypalExpress() {
			// Hide the express button container around each express placement...
			$( PAYPAL_EXPRESS_IDS ).closest( '.angelleye_ppcp-button-container' ).addClass( 'ewsb-hide' );
			// ...and the express fieldset wrapper on checkout (incl. its "OR" divider).
			$( '.wc_ppcp_express_checkout_gateways' ).addClass( 'ewsb-hide' );
		}

		// A group is "available" only when Stripe has flagged one of its wrappers ready.
		function available( sel ) {
			return $( sel ).filter( '[data-fkwcs-available="yes"]' ).length > 0
				|| $( sel ).find( '[data-fkwcs-available="yes"]' ).length > 0;
		}

		function apply() {
			var appleOn  = available( APPLE );
			var googleOn = window._fkwcs_gpay_ready_state === true || available( GOOGLE );

			// Only ever hide things once a wallet is actually confirmed available.
			// If nothing is confirmed we leave every button exactly as Stripe left it.
			if ( appleOn ) {
				hide( GOOGLE );        // Apple wins over Google
				hidePaypalExpress();
			} else if ( googleOn ) {
				hidePaypalExpress();   // Google wins over PayPal
			}
		}

		$( document.body ).on(
			'fkwcs_smart_buttons_showed fkwcs_new_express_smart_buttons_showed fkwcs_express_google_ready_pay fkwcs_express_google_not_ready_pay updated_cart_totals wc_fragments_refreshed fkcart_fragments_refreshed updated_checkout',
			apply
		);

		// A couple of safety re-runs in case the event fired before this bound.
		$( apply );
		setTimeout( apply, 1500 );
		setTimeout( apply, 3500 );
	} )( window.jQuery );
	</script>
	<?php
}