clear cache on settings change

extend.php

@@ -15,6 +15,7 @@
 use Flarum\Api\Serializer\ForumSerializer;
 use Flarum\Extend;
 use Flarum\Frontend\Document;
+use Flarum\Settings\Event\Saving;
 use Flarum\User\Event\LoggedOut;
 use FoF\Extend\Events\OAuthLoginSuccessful;
 
@@ -50,8 +51,7 @@
         ->register(OAuthServiceProvider::class),
 
     (new Extend\ApiSerializer(ForumSerializer::class))
-        ->attributes(function (ForumSerializer $serializer) {
-            $attributes = [];
+        ->attributes(function (ForumSerializer $serializer, $model, array $attributes): array {
             if ($serializer->getActor()->isGuest()) {
                 $attributes['fof-oauth'] = resolve('fof-oauth.providers.forum');
             }
@@ -72,7 +72,8 @@
 
     (new Extend\Event())
         ->listen(OAuthLoginSuccessful::class, Listeners\UpdateEmailFromProvider::class)
-        ->listen(LoggedOut::class, Listeners\HandleLogout::class),
+        ->listen(LoggedOut::class, Listeners\HandleLogout::class)
+        ->listen(Saving::class, Listeners\ClearOAuthCache::class),
 
     (new Extend\ApiSerializer(CurrentUserSerializer::class))
         ->attributes(Api\CurrentUserAttributes::class),

src/Listeners/ClearOAuthCache.php

@@ -0,0 +1,28 @@
+<?php
+
+namespace FoF\OAuth\Listeners;
+
+use Flarum\Settings\Event\Saving;
+use Illuminate\Contracts\Cache\Store as Cache;
+use Illuminate\Support\Str;
+
+class ClearOAuthCache
+{
+    protected $cache;
+
+    public function __construct(Cache $cache)
+    {
+        $this->cache = $cache;
+    }
+
+    public function handle(Saving $event)
+    {
+        foreach (array_keys($event->settings) as $key) {
+            if (Str::startsWith($key, 'fof-oauth')) {
+                $this->cache->forget('fof-oauth.providers.forum');
+                $this->cache->forget('fof-oauth.providers.admin');
+                break; // Exit the loop once the cache is cleared
+            }
+        }
+    }
+}