[CORE][ActorController] Refactor actor related controllers (Actor, Subscribers, Subscriptions) to remove duplicated code

src/Core/Controller/ActorController.php

@@ -0,0 +1,68 @@
+<?php
+
+declare(strict_types = 1);
+
+// {{{ License
+// This file is part of GNU social - https://www.gnu.org/software/social
+//
+// GNU social is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// GNU social is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with GNU social.  If not, see <http://www.gnu.org/licenses/>.
+// }}}
+
+/**
+ * Base class for feed controllers
+ *
+ * @package  GNUsocial
+ * @category Controller
+ *
+ * @author    Hugo Sales <hugo@hsal.es>
+ * @copyright 2021 Free Software Foundation, Inc http://www.fsf.org
+ * @license   https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
+ */
+
+namespace App\Core\Controller;
+
+use App\Core\Controller;
+
+abstract class ActorController extends Controller
+{
+    /**
+     * Generic function that handles getting a representation for an actor from id
+     */
+    protected function handleActorById(int $id, callable $handle)
+    {
+        $actor = DB::findOneBy('actor', ['id' => $id]);
+        if ($actor->getIsLocal()) {
+            return new RedirectResponse($actor->getUrl());
+        }
+        if (empty($actor)) {
+            throw new ClientException(_m('No such actor.'), 404);
+        } else {
+            return $handle($actor);
+        }
+    }
+
+    /**
+     * Generic function that handles getting a representation for an actor from nickname
+     */
+    protected function handleActorByNickname(string $nickname, callable $handle)
+    {
+        $user  = DB::findOneBy('local_user', ['nickname' => $nickname]);
+        $actor = DB::findOneBy('actor', ['id' => $user->getId()]);
+        if (empty($actor)) {
+            throw new ClientException(_m('No such actor.'), 404);
+        } else {
+            return $handle($actor);
+        }
+    }
+}