/**
  * Activate single course if already purchases
  * @return void
  */
 public function activate_purchased_single_course()
 {
     global $post, $current_user;
     if (WooThemes_Sensei_Utils::sensei_is_woocommerce_activated()) {
         if (!is_user_logged_in()) {
             return;
         }
         if (!isset($post->ID)) {
             return;
         }
         $user_id = $current_user->ID;
         $course_id = $post->ID;
         $course_product_id = (int) get_post_meta($course_id, '_course_woocommerce_product', true);
         if (!$course_product_id) {
             return;
         }
         $user_course_status = WooThemes_Sensei_Utils::user_course_status(intval($course_id), $user_id);
         // Ignore course if already completed
         if (WooThemes_Sensei_Utils::user_completed_course($user_course_status)) {
             return;
         }
         // Ignore course if already started
         if ($user_course_status) {
             return;
         }
         // Get all user's orders
         $order_args = array('post_type' => 'shop_order', 'posts_per_page' => -1, 'post_status' => array('wc-processing', 'wc-completed'), 'meta_query' => array(array('key' => '_customer_user', 'value' => $user_id)), 'fields' => 'ids');
         $orders = get_posts($order_args);
         foreach ($orders as $order_post_id) {
             // Get course product IDs from order
             $order = new WC_Order($order_post_id);
             $items = $order->get_items();
             foreach ($items as $item) {
                 $product = wc_get_product($item['product_id']);
                 // handle product bundles
                 if ($product->is_type('bundle')) {
                     $bundled_product = new WC_Product_Bundle($product->id);
                     $bundled_items = $bundled_product->get_bundled_items();
                     foreach ($bundled_items as $item) {
                         if ($item->product_id == $course_product_id) {
                             WooThemes_Sensei_Utils::user_start_course($user_id, $course_id);
                             return;
                         }
                     }
                 } else {
                     // handle regular products
                     if ($item['product_id'] == $course_product_id) {
                         WooThemes_Sensei_Utils::user_start_course($user_id, $course_id);
                         return;
                     }
                 }
             }
         }
     }
 }