send notification on update failure

app/Listeners/Update/SendNotificationOnFailure.php

@@ -0,0 +1,51 @@
+<?php
+
+namespace App\Listeners\Update;
+
+use App\Events\Install\UpdateFailed as Event;
+use App\Notifications\Install\UpdateFailed as Notification;
+use Exception;
+use GuzzleHttp\Exception\RequestException;
+use Illuminate\Notifications\Notifiable;
+
+class SendNotificationOnFailure
+{
+    /**
+     * Handle the event.
+     *
+     * @param  $event
+     * @return void
+     */
+    public function handle(Event $event)
+    {
+        $notifiable = $this->getNotifiableClass();
+
+        try {
+            $notifiable->notify(new Notification($event));
+        } catch (Exception | RequestException $e) {
+            report($e);
+        }
+    }
+
+    protected function getNotifiableClass()
+    {
+        return new class() {
+            use Notifiable;
+
+            public function routeNotificationForMail()
+            {
+                return config('update.notifications.mail.to');
+            }
+
+            public function routeNotificationForSlack()
+            {
+                return config('update.notifications.slack.to');
+            }
+
+            public function getKey()
+            {
+                return 1;
+            }
+        };
+    }
+}