Make user mentions great again

app/Job/UserMentionJob.php

@@ -0,0 +1,71 @@
+<?php
+
+namespace Kanboard\Job;
+
+use Kanboard\Event\GenericEvent;
+use Kanboard\Model\UserModel;
+
+/**
+ * Class UserMentionJob
+ *
+ * @package Kanboard\Job
+ * @author  Frederic Guillot
+ */
+class UserMentionJob extends BaseJob
+{
+    /**
+     * Set job parameters
+     *
+     * @param  string       $text
+     * @param  string       $eventName
+     * @param  GenericEvent $event
+     * @return $this
+     */
+    public function withParams($text, $eventName, GenericEvent $event)
+    {
+        $this->jobParams = array($text, $eventName, $event);
+        return $this;
+    }
+
+    /**
+     * Execute job
+     *
+     * @param string       $text
+     * @param string       $eventName
+     * @param GenericEvent $event
+     */
+    public function execute($text, $eventName, GenericEvent $event)
+    {
+        $users = $this->getMentionedUsers($text);
+
+        foreach ($users as $user) {
+            if ($this->projectPermissionModel->isMember($event->getProjectId(), $user['id'])) {
+                $event['mention'] = $user;
+                $this->dispatcher->dispatch($eventName, $event);
+            }
+        }
+    }
+
+    /**
+     * Get list of mentioned users
+     *
+     * @access public
+     * @param  string $text
+     * @return array
+     */
+    public function getMentionedUsers($text)
+    {
+        $users = array();
+
+        if (preg_match_all('/@([^\s,!.:?]+)/', $text, $matches)) {
+            $users = $this->db->table(UserModel::TABLE)
+                ->columns('id', 'username', 'name', 'email', 'language')
+                ->eq('notifications_enabled', 1)
+                ->neq('id', $this->userSession->getId())
+                ->in('username', array_unique($matches[1]))
+                ->findAll();
+        }
+
+        return $users;
+    }
+}