added file download on cartel

web/themes/custom/edlptheme/edlptheme.theme

@@ -204,7 +204,7 @@ function edlptheme_prepare_audio_link(&$vars){
 }
 
 function edlptheme_preprocess_node__enregistrement__player_cartel(&$vars){
-  // dpm($vars);
+  dpm($vars);
   $node = $vars['node'];
 
   $vars['col_left'] = false;
@@ -249,6 +249,39 @@ function edlptheme_preprocess_node__enregistrement__player_cartel(&$vars){
   if($vars['col_left'] || $vars['col_right']){
     $vars['second_cartel'] = true;
   }
+
+  // get the audio file url
+  $field_son_values = $node->get('field_son')->getValue();
+  $son_fid = count($field_son_values) ? $field_son_values[0]['target_id'] : "";
+  $son_file = \Drupal\file\Entity\File::load($son_fid);
+  if($son_file){
+    $son_uri = $son_file->getFileUri();
+    $son_url = file_create_url($son_uri);
+
+    $base = log($son_file->getSize(), 1024);
+    $suffixes = array('', 'K', 'M', 'G', 'T');
+    $file_size = round(pow(1024, $base - floor($base)), 0) .' '. $suffixes[floor($base)];
+
+    preg_match('/^.*(\.\S+)$/', $son_uri, $matches);
+    $extension = $matches[1];
+
+    $node_title = $node->getTitle();
+    $new_file_name = str_replace(' ', '_', $node_title) . $extension;
+
+    $config = \Drupal::config('system.site');
+    $site_title = str_replace(' ', '_', $config->get('name'));
+
+    $url = Url::fromUri($son_url);
+    $url->setOptions(array(
+      'attributes' => array(
+        'class' => ['link-audio-download'],
+        'download' =>  $site_title .'__'. $new_file_name,
+        'title' => $new_file_name . ' ('.$file_size.')'
+      )
+    ));
+    $vars['link_audio_download'] = Link::fromTextAndUrl(t("Download"), $url);
+  }
+
 }
 
 
@@ -285,5 +318,5 @@ function edlptheme_preprocess_links__language_block(&$vars){
 }
 
 function edlptheme_preprocess_file_link(&$vars){
-
+  // dpm($vars);
 }