Add YITH Brand to Schema on Product page

functions.php

/**
 * Title: Add YITH Brand to Schema on Product page 
 * Author: Mattias Ghodsian
 * Description: This is for yith-woocommerce-brands-add-on-premium plugin
 * Donate a cup of coffee: https://www.buymeacoffee.com/mattiasghodsian
 * Donate Eth: 0xBBB96204E45D11C9799c6B12E6eE6F0d4A071Ef5
 **/
function yith_brand_schema() {

	if ( is_product() ) {

		$brand = get_the_terms( get_the_ID() , 'yith_product_brand' );
		
		if ( !is_wp_error($brand) ) {
			if ( isset($brand[0]) ) {
				$brand 			= $brand[0];
				$thumbnail_id 	= get_woocommerce_term_meta( $brand->term_id, 'thumbnail_id', true );
				$brand_image 	= wp_get_attachment_url(  $thumbnail_id );
			?>
				<script type="application/ld+json">
				{
				  "@context": "http://schema.org",
				  "@type": "Brand",
				  "name": "<?php echo $brand->name; ?>",
				  "url": "<?php echo get_term_link($brand); ?>",
				  "logo" : "<?php echo $brand_image; ?>",
				  "description" : "<?php echo strip_tags($brand->description); ?>"
				}
				</script>
			<?php
			}
		}
	}
	
}
add_action( 'wp_head', 'yith_brand_schema' );