LP: Add hook when viewing item - refs BT#16742

main/inc/lib/hook/HookLearningPathItemViewed.php

@@ -0,0 +1,29 @@
+<?php
+/* For licensing terms, see /license.txt */
+
+/**
+ * Class HookLearningPathItemViewed.
+ */
+class HookLearningPathItemViewed extends HookEvent implements HookLearningPathItemViewedEventInterface
+{
+    /**
+     * HookLearningPathItemViewed constructor.
+     *
+     * @throws \Exception
+     */
+    protected function __construct()
+    {
+        parent::__construct('HookLearningPathItemViewed');
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function notifyLearningPathItemViewed()
+    {
+        /** @var \HookLearningPathItemViewedObserverInterface $observer */
+        foreach ($this->observers as $observer) {
+            $observer->hookLearningPathItemViewed($this);
+        }
+    }
+}

main/inc/lib/hook/interfaces/HookLearningPathItemViewedEventInterface.php

@@ -0,0 +1,13 @@
+<?php
+/* For licensing terms, see /license.txt */
+
+/**
+ * Interface HookLearningPathItemViewedEventInterface.
+ */
+interface HookLearningPathItemViewedEventInterface extends HookEventInterface
+{
+    /**
+     * @return mixed
+     */
+    public function notifyLearningPathItemViewed();
+}

main/inc/lib/hook/interfaces/HookLearningPathItemViewedObserverInterface.php

@@ -0,0 +1,15 @@
+<?php
+/* For licensing terms, see /license.txt */
+
+/**
+ * Interface HookLearningPathItemViewedObserverInterface.
+ */
+interface HookLearningPathItemViewedObserverInterface extends HookObserverInterface
+{
+    /**
+     * @param \HookLearningPathItemViewedEventInterface $event
+     *
+     * @return mixed
+     */
+    public function hookLearningPathItemViewed(HookLearningPathItemViewedEventInterface $event);
+}

main/lp/lp_ajax_save_item.php

@@ -541,6 +541,10 @@ function save_item(
     // To be sure progress is updated.
     $myLP->save_last($score);
 
+    HookLearningPathItemViewed::create()
+        ->setEventData(['item_view_id' => $myLPI->db_item_view_id])
+        ->notifyLearningPathItemViewed();
+
     Session::write('lpobject', serialize($myLP));
     Session::write('oLP', $myLP);
     if ($debug > 0) {