Merge pull request #1032 from dav-is/patch-1

Prevent deletion of default/all locale(s)

src/Core/CoreServiceProvider.php

@@ -106,6 +106,7 @@ class CoreServiceProvider extends AbstractServiceProvider
 
         $events->subscribe('Flarum\Core\Listener\DiscussionMetadataUpdater');
         $events->subscribe('Flarum\Core\Listener\UserMetadataUpdater');
+        $events->subscribe('Flarum\Core\Listener\ExtensionValidator');
         $events->subscribe('Flarum\Core\Listener\EmailConfirmationMailer');
         $events->subscribe('Flarum\Core\Listener\DiscussionRenamedNotifier');
 

src/Core/Listener/ExtensionValidator.php

@@ -0,0 +1,42 @@
+<?php
+
+/*
+ * This file is part of Flarum.
+ *
+ * (c) Toby Zerner <toby.zerner@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Flarum\Core\Listener;
+
+use Flarum\Event\ExtensionWillBeDisabled;
+use Flarum\Http\Exception\MethodNotAllowedException;
+use Illuminate\Contracts\Events\Dispatcher;
+
+class ExtensionValidator
+{
+    /**
+     * @param Dispatcher $events
+     */
+    public function subscribe(Dispatcher $events)
+    {
+        $events->listen(ExtensionWillBeDisabled::class, [$this, 'whenExtensionWillBeDisabled']);
+    }
+
+    /**
+     * @param ExtensionWillBeDisabled $event
+     * @throws MethodNotAllowedException
+     */
+    public function whenExtensionWillBeDisabled(ExtensionWillBeDisabled $event)
+    {
+        if (in_array('flarum-locale', $event->extension->extra)) {
+            $default_locale = $this->app->make('flarum.settings')->get('default_locale');
+            $locale = array_get($event->extension->extra, 'flarum-locale.code');
+            if ($locale === $default_locale) {
+                throw new MethodNotAllowedException('You cannot disable the default language pack!');
+            }
+        }
+    }
+}