Wocoommerce - Detect user Country on Checkout Page

functions.php

<?php

function get_user_geo_country(){
	if(is_checkout()) {
		$geo      = new WC_Geolocation(); // Get WC_Geolocation instance object
        $user_ip  = $geo->get_ip_address(); // Get user IP
        $user_geo = $geo->geolocate_ip( $user_ip ); // Get geolocated user data.
        $country  = $user_geo['country']; // Get the country code
	    if($country != 'DE') {
		    ?>
		    <script>
		    	alert('Ihr Land: <?php echo WC()->countries->countries[ $country ] ?>!<br>Wir versenden nur innerhalb Deutschland.')
        </script>
        <?php
	    }
	}
}

add_action('wp_footer', 'get_user_geo_country');