Funnelkit Checkout: Hide Billing Address Fields When Cart Total is Zero

gistfile1.txt

class WFACP_Hide_Billing_Fields_On_Zero_Cart {
	protected $field_key = 'billing';

	public function __construct() {
		add_action( 'wfacp_before_process_checkout_template_loader', [ $this, 'init' ] );
		add_action( 'wfacp_after_checkout_page_found', [ $this, 'init' ] );
	}

	/**
	 * Initialize hooks
	 */
	public function init() {
		add_action( 'wfacp_checkout_fields', [ $this, 'remove_billing_validation' ], 99999 );
		add_action( 'wfacp_internal_css', [ $this, 'enqueue_scripts' ] );
		add_action( 'wp_footer', [ $this, 'add_inline_css' ] );
	}

	/**
	 * Check if cart total is zero
	 *
	 * @return bool
	 */
	protected function is_cart_total_zero() {
		if ( ! WC()->cart || WC()->cart->is_empty() ) {
			return false;
		}

		return (float) WC()->cart->get_total( '' ) === 0.0;
	}

	/**
	 * Remove required and validation from billing fields when cart total is zero
	 *
	 * @param array $fields Checkout fields
	 * @return array
	 */
	public function remove_billing_validation( $fields ) {
		if ( ! $this->is_cart_total_zero() ) {
			return $fields;
		}

		if ( ! isset( $fields[ $this->field_key ] ) ) {
			return $fields;
		}

		foreach ( $fields[ $this->field_key ] as $key => &$field ) {
			unset( $field['required'], $field['validate'] );
		}

		return $fields;
	}

	/**
	 * Add inline CSS to hide billing section on initial page load
	 */
	public function add_inline_css() {
		if ( ! $this->is_cart_total_zero() ) {
			return;
		}
		?>
		<style>
			.wfacp-section:has(.wfacp_divider_billing) {
				display: none !important;
			}
		</style>
		<?php
	}

	/**
	 * Enqueue JavaScript for dynamic show/hide functionality
	 */
	public function enqueue_scripts() {
		?>
		<script>
			(function ($) {
				'use strict';

				/**
				 * Get cart total from various sources
				 *
				 * @param {object} actionData Optional action data from AJAX response
				 * @return {number}
				 */
				function getCartTotal( actionData ) {
					// Method 1: From action data
					if ( actionData && typeof actionData.cart_total !== 'undefined' ) {
						return parseFloat( actionData.cart_total ) || 0;
					}

					// Method 2: From order summary total price
					var $totalPrice = $( '.wfacp_order_summary .wfacp_order_total .wfacp_order_total_price' );
					if ( $totalPrice.length ) {
						var totalText = $totalPrice.text().replace( /[^0-9.-]/g, '' );
						return parseFloat( totalText ) || 0;
					}

					// Method 3: From order summary data attribute
					var $orderSummary = $( '.wfacp_order_summary' );
					if ( $orderSummary.length ) {
						var orderTotal = $orderSummary.data( 'total' );
						if ( orderTotal !== undefined ) {
							return parseFloat( orderTotal ) || 0;
						}
					}

					return 0;
				}

				/**
				 * Toggle billing section visibility based on cart total
				 *
				 * @param {object} actionData Optional action data from AJAX response
				 */
				function toggleBillingSection( actionData ) {
					var $section = $( '.wfacp_divider_billing' ).parents( '.wfacp-section' );
					if ( ! $section.length ) {
						return;
					}

					var cartTotal = getCartTotal( actionData );
					$section.toggle( cartTotal > 0 );
				}

				// Initialize on page load
				$( document ).ready( function() {
					toggleBillingSection();
				} );

				// Initialize when WFACP checkout loads
				window.addEventListener( 'bwf_checkout_load', function() {
					toggleBillingSection();
				} );

				// Update on AJAX responses
				if ( typeof wfacp_frontend !== 'undefined' && wfacp_frontend.hooks ) {
					wfacp_frontend.hooks.addAction( 'wfacp_ajax_response', function( fragments, actionData ) {
						toggleBillingSection( actionData );
					} );

					wfacp_frontend.hooks.addAction( 'wfacp_update_order_review_response', function( fragments, actionData ) {
						toggleBillingSection( actionData );
					} );
				}
			})( jQuery );
		</script>
		<?php
	}
}

new WFACP_Hide_Billing_Fields_On_Zero_Cart();