Fix Deliver with Econt checkout process for virtual products

functions.php

/**
 * Fix Deliver with Econt checkout process.
 *
 * Check cart for virtual products and remove action 'action_woocommerce_checkout_process'
 * hooked in plugins/deliver-with-econt/bootstrap.php:393 if there are only
 * virtual products.
 */
function fix_econt_checkout_process() {

	// Change this to 0 to disable logging.
	$logging = 1;

	// Initial values of products count.
	$virtual  = 0;
	$physical = 0;

	// Check cart contents.
        foreach( WC()->cart->get_cart() as $item ) {

		if( empty( $item['product_id'] ) ) {
			continue;
		}

		$product = wc_get_product( $item['product_id'] );
		if( empty( $product ) ) {
			continue;
		}

		$product->is_virtual() ? $virtual++ : $physical++;

	    $product_id = $cart_item['product_id'];
	}

	// Add log data.
	$log = sprintf( 'Fix Econt checkout process: virtual=%d, physical=%d;', $virtual, $physical );

	if ( ! empty( $virtual ) && empty( $physical ) ) {
		remove_action( 'woocommerce_checkout_process', 'action_woocommerce_checkout_process' );

		$log .= ' Action [action_woocommerce_checkout_process] removed';
	}

	// Add log.
	if ( ! empty( $logging ) && function_exists( 'wc_get_logger' ) ) {
		wc_get_logger()->debug( $log );
	}
}
add_action( 'woocommerce_before_checkout_process', 'fix_econt_checkout_process' );