[MarketPress] - Adds Virtual products type in product's Product Kind

mp-virtual-products.php

<?php
/*
Plugin Name: [MarketPress] Virtual products
Plugin URI: https://premium.wpmudev.org/
Description: Adds Virtual products type in product's Product Kind
Author: Panos Lyrakis @ WPMUDEV
Author URI: https://premium.wpmudev.org/
License: GPLv2 or later
*/

add_filter( 'mp_product_kinds', function( $product_kinds ){

	$product_kinds[ 'virtual' ] = 'Virtual';

	return $product_kinds;

}, 10 );

add_filter( 'mp_cart/is_product_downloadable', function( $is_virtual, $product ){

    if( $product->is_variation() ){
        $product_type = get_post_meta( $product->post_parent, 'product_type', true );
    }
    else{
        $product_type = get_post_meta( $product->ID, 'product_type', true );
    }

	if( $product_type ==  'virtual' ){
		$is_virtual = true;
	}
	
	return $is_virtual;

}, 10, 2);

add_filter( 'mp_add_field_array_has_variation', function( $metabox_field ){
    
    $metabox_field['conditional']['value'][] = 'virtual';
    return $metabox_field;
}, 10 );

This adds a new Product type in the Product Kind options of a product "Virtual". By choosing this type for a product it will hide the address section in the checkout page without adding the download link to order page and emails.