Add shipping policy to cart and checkout

function.php

add_action('woocommerce_cart_totals_before_order_total', 'wcv_display_shipping_policy');	
add_action('woocommerce_review_order_before_shipping', 'wcv_display_shipping_policy');	
function wcv_display_shipping_policy() {

 
		$product = gastronomy_get_productID_from_cart();
		$vendor_id = get_post_field( 'post_author', $product);

		$vendor_meta 		= array_map( function( $a ){ return $a[0]; }, get_user_meta( $vendor_id ) );
		$vendor_shipping	= array_key_exists('_wcv_shipping', $vendor_meta ) ? unserialize( $vendor_meta['_wcv_shipping'] ) : self::get_shipping_defaults();  
		
		$policy = $vendor_shipping[ 'shipping_policy' ];
		
		if (! wcv_national_shipping_disable()){
			echo '<tr><th>'. __( 'Shipping policy', 'wcvendors' ) .'</th><td data-title=" '. __( 'Infos', 'woocommerce' ) .' ">'. $policy .'</td></tr>';
	    }
		else
		{
			$policy = __('No shipping form vendor !');
			echo '<tr><th>'. __( 'Shipping policy', 'wcvendors' ) .'</th><td data-title=" '. __( 'Infos', 'woocommerce' ) .' ">'. $policy .'</td></tr>';	
		}
		
	

}


 function gastronomy_get_productID_from_cart()
 {
	// CAUTION
	// !!An order can only have products from 1 and only 1 vendor !!
	// get first product of the cart => then we can get vendor ID	
	$items = WC()->cart->get_cart();
	foreach($items as $item => $values) {
		$_product[] = $values['data']->post;
		break;
	}	
	return $_product[0]->ID;
 }