backend file type

@@ -202,7 +202,29 @@ function resources_fav(){
    }
 
 
+  function getIsExternLink($link) {
+  if (strpos($link,'brokers') === -1 && strpos($link,'localhost') === -1 && strpos($link,'mailto:') === -1 && strpos($link,'tel:') === -1 && strpos($link,'#') !== 0) {
+    if ($link !== "/" && $link !== "#" && strpos($link,'/') !== 0) {
+      return true;
+    }
+  }
+}
 
+function getFileTypeClass($filename) {
+  
+  if (strpos($filename,'.pdf') !== false) {
+    return('pdf');
+  } else if (strpos($filename,'.xls') !== false) {
+    return('xls');
+  } else if (strpos($filename,'mailto:') !== false) {
+    return('mailto');
+  } else if (strpos($filename,'tel:') !== false) {
+    return('tel');
+  } else if (getIsExternLink($filename)) {
+    return('extern');
+  }
+  
+}
 
 function resources($id, $taxes, $is_fav = false){
 
@@ -234,7 +256,7 @@ function resources($id, $taxes, $is_fav = false){
 
  <tr class="table-like__item">
   <td class="item">
-    <a target="_blank" role="button" class="item-link" href="<?php echo wp_get_attachment_url($id); ?>"><?php echo $post->post_title; ?></a>
+    <a target="_blank" role="button" class="item-link <?= getFileTypeClass(wp_get_attachment_url($id)) ?>" href="<?php echo wp_get_attachment_url($id); ?>"><?php echo $post->post_title; ?></a>
     <span class='updated-at'>
       <?php if($is_new && !empty($updated_at)) { ?>
         <b>NEW:</b>  <?= date('M d/Y', strtotime($updated_at)) ?>