Implement basic settings page

src/Api/Actions/Forum/ShowAction.php

@@ -2,6 +2,7 @@
 
 use Flarum\Api\Actions\SerializeResourceAction;
 use Flarum\Api\JsonApiRequest;
+use Flarum\Core\Groups\Group;
 use Tobscure\JsonApi\Document;
 
 class ShowAction extends SerializeResourceAction
@@ -14,7 +15,9 @@ class ShowAction extends SerializeResourceAction
     /**
      * @inheritdoc
      */
-    public $include = [];
+    public $include = [
+        'groups' => true
+    ];
 
     /**
      * @inheritdoc
@@ -51,6 +54,10 @@ class ShowAction extends SerializeResourceAction
      */
     protected function data(JsonApiRequest $request, Document $document)
     {
-        return app('flarum.forum');
+        $forum = app('flarum.forum');
+
+        $forum->groups = Group::all();
+
+        return $forum;
     }
 }

src/Api/Actions/Forum/UpdateAction.php

@@ -0,0 +1,53 @@
+<?php namespace Flarum\Api\Actions\Forum;
+
+use Flarum\Core\Exceptions\PermissionDeniedException;
+use Flarum\Core\Settings\SettingsRepository;
+use Flarum\Api\Actions\SerializeResourceAction;
+use Flarum\Api\JsonApiRequest;
+use Tobscure\JsonApi\Document;
+
+class UpdateAction extends SerializeResourceAction
+{
+    /**
+     * @inheritdoc
+     */
+    public $serializer = 'Flarum\Api\Serializers\ForumSerializer';
+
+    /**
+     * @var SettingsRepository
+     */
+    protected $settings;
+
+    /**
+     * @param SettingsRepository $settings
+     */
+    public function __construct(SettingsRepository $settings)
+    {
+        $this->settings = $settings;
+    }
+
+    /**
+     * Get the forum, ready to be serialized and assigned to the JsonApi
+     * response.
+     *
+     * @param JsonApiRequest $request
+     * @param Document $document
+     * @return \Flarum\Core\Forum
+     */
+    protected function data(JsonApiRequest $request, Document $document)
+    {
+        if (! $request->actor->isAdmin()) {
+            throw new PermissionDeniedException;
+        }
+
+        $config = $request->get('data.attributes.config');
+
+        if (is_array($config)) {
+            foreach ($config as $k => $v) {
+                $this->settings->set($k, $v);
+            }
+        }
+
+        return app('flarum.forum');
+    }
+}