1 files changed, 149 insertions, 0 deletions
diff --git a/lib/classes/ForumActivity.php b/lib/classes/ForumActivity.php
new file mode 100644
index 0000000..20ebeb6
--- /dev/null
+++ b/lib/classes/ForumActivity.php
@@ -0,0 +1,149 @@
+<?php
+/**
+ * File - description
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * @author      Till Glöggler <tgloeggl@uos.de>
+ * @license     https://www.gnu.org/licenses/gpl-2.0.html GPL version 2
+ */
+
+class ForumActivity
+{
+    /**
+     * Post activity for new forum post
+     *
+     * @param string $event
+     * @param string $topic_id
+     * @param array $post
+     */
+    public static function newEntry($event, $topic_id, $post)
+    {
+        $verb = $post['depth'] == 3 ? 'answered' : 'created';
+
+        if ($verb == 'created') {
+            if ($post['depth'] == 1) {
+                $summary = _('%s hat im Forum der Veranstaltung "%s" einen Bereich erstellt.');
+            } else {
+                $summary = _('%s hat im Forum der Veranstaltung "%s" ein Thema erstellt.');
+            }
+        } else {
+            $summary = _('%s hat im Forum der Veranstaltung "%s" auf ein Thema geantwortet.');
+        }
+
+        self::post($post, $verb, $summary);
+    }
+
+    /**
+     * Post activity for updating a forum post
+     * @param string $event
+     * @param string $topic_id
+     * @param string $post
+     */
+    public static function updateEntry($event, $topic_id, $post)
+    {
+        $summary = _('%s hat im Forum der Veranstaltung "%s" einen Beitrag editiert.');
+
+        if ($post['user_id'] == $GLOBALS['user']->id) {
+            $content = sprintf(
+                _('%s hat seinen eigenen Beitrag vom %s editiert.'),
+                self::getPostUsername($post),
+                date('d.m.y, H:i', $post['mkdate'])
+            );
+        } else {
+            $content = sprintf(
+                _('%s hat den Beitrag von %s vom %s editiert.'),
+                get_fullname($GLOBALS['user']->id),
+                self::getPostUsername($post),
+                date('d.m.y, H:i', $post['mkdate'])
+            );
+        }
+
+        self::post($post, 'edited', $summary, $content);
+    }
+
+    /**
+     * Post activity for deleting a forum post
+     * $param string $event
+     * @param string $topic_id
+     * @param string $post
+     */
+    public static function deleteEntry($event, $topic_id, $post)
+    {
+        // Remove all previous activities for the post
+        Studip\Activity\Activity::deleteBySQL(
+            "provider = ? AND object_type = 'forum' AND object_id = ?",
+            [Studip\Activity\ForumProvider::class, $topic_id]
+        );
+
+        $summary = _('%s hat im Forum der Veranstaltung "%s" einen Beitrag gelöscht.');
+
+        if ($post['user_id'] == $GLOBALS['user']->id) {
+            $content = sprintf(
+                _('%s hat seinen Beitrag vom %s gelöscht.'),
+                self::getPostUsername($post),
+                date('d.m.y, H:i', $post['mkdate'])
+            );
+        } else {
+            $content = sprintf(
+                _('%s hat den Beitrag von %s vom %s gelöscht.'),
+                get_fullname($GLOBALS['user']->id),
+                self::getPostUsername($post),
+                date('d.m.y, H:i', $post['mkdate'])
+            );
+        }
+
+        self::post($post, 'deleted', $summary, $content);
+    }
+
+    private static function post($post, $verb, $summary, $content = null)
+    {
+        // skip system-created entries like "Allgemeine Diskussionen"
+        if (!$post['user_id']) {
+            return;
+        }
+
+        $range_id = $post['seminar_id'];
+        $type     = get_object_type($range_id);
+
+        $obj = get_object_name($range_id, $type);
+
+        $data = [
+            'provider'     => 'Studip\Activity\ForumProvider',
+            'context'      => $type === 'sem' ? 'course' : 'institute',
+            'context_id'   => $post['seminar_id'],
+            'content'      => null,
+            'actor_type'   => 'user',             // who initiated the activity?
+            'actor_id'     => $post['user_id'],   // id of initiator
+            'verb'         => $verb,              // the activity type
+            'object_id'    => $post['topic_id'],  // the id of the referenced object
+            'object_type'  => 'forum',            // type of activity object
+            'mkdate'       => $post['mkdate'] ?: time()
+        ];
+
+        if ($post['anonymous']) {
+            $data['actor_type'] = 'anonymous';
+            $data['actor_id']   = '';
+        }
+
+        $activity = Studip\Activity\Activity::create($data);
+    }
+
+    /**
+     * Returns the poster's name for a forum post.
+     *
+     * @param array $post
+     * @return string
+     */
+    private static function getPostUsername($post)
+    {
+        if ($post['anonymous']) {
+            return _('Anonym');
+        }
+
+        return get_fullname($post['user_id']);
+    }
+}