Automatically copies payment link to clipboard

When not supported by browser, the link can still be copied manually

view/adminhtml/templates/info/adyen_paymentlink.phtml

@@ -27,6 +27,18 @@
 <div class="admin__page-section-item-title">
     <span class="title"><?php echo __('Adyen Payment Link');?></span>
 </div>
-<a href="<?=$block->getPaymentLinkUrl();?>" target="_blank">
-    <?php echo __('Adyen Payment Link for remaining total due'); ?>
+<p id="paymentlink"></p>
+<a href="<?=$block->getPaymentLinkUrl();?>" onclick="copyToClipboard(event, '<?=$block->getPaymentLinkUrl();?>')" style="cursor:pointer;">
+    <?php echo __('Copy payment link to clipboard'); ?>
 </a>
+
+<script type="text/javascript">
+    function copyToClipboard(e, text) {
+        e.preventDefault();
+        var $temp = jQuery("<input>");
+        jQuery("body").append($temp);
+        $temp.val(text).select();
+        document.execCommand("copy");
+        $temp.remove();
+    }
+</script>