Repository*: load category names from lang files; include only current name in category

repo.php

@@ -72,6 +72,8 @@ if (isset($config['cache'])) {
 
 $data = $repo->data($_REQUEST);
 
+$repo->updateLang($data, $_REQUEST);
+
 if (!array_key_exists('index', $data['categories'])) {
   $data['categories']['index'] = array(
     'type' => 'index',

src/RepositoryBase.php

@@ -34,6 +34,42 @@ class RepositoryBase {
     return $data;
   }
 
+  function updateLang (&$data, $options) {
+    $lang = array_key_exists('lang', $options) ? $options['lang'] : 'en';
+
+    if (!is_array($data['lang'])) {
+      $data['lang'] = array();
+    }
+
+    foreach ($data['categories'] as $id => $category) {
+      $name = null;
+      if (array_key_exists("category:{$id}", $data['lang'])) {
+        $name = $data['lang']["category:{$id}"];
+
+        if ($name !== '' && $name !== null) {
+          $data['categories'][$id]['name'] = array(
+            $lang => $data['lang']["category:{$id}"],
+          );
+        }
+      }
+      elseif (array_key_exists('name', $category)) {
+        if (array_key_exists($lang, $category['name'])) {
+          $name = $category['name'][$lang];
+        }
+        elseif (array_key_exists('en', $category['name'])) {
+          $name = $category['name']['en'];
+        }
+        elseif (sizeof($category['name'])) {
+          $name = $category['name'][array_keys($category['name'])[0]];
+        }
+
+        $data['lang']["category:{$id}"] = $name;
+
+        $data['categories'][$id]['name'] = array($lang => $name);
+      }
+    }
+  }
+
   function isCategory ($data) {
     if (!array_key_exists('type', $data)) {
       return false;