feat(episode): add preview link in admin to view and share episode before publication

app/Controllers/EpisodePreviewController.php

@@ -0,0 +1,66 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * @copyright  2023 Ad Aures
+ * @license    https://www.gnu.org/licenses/agpl-3.0.en.html AGPL3
+ * @link       https://castopod.org/
+ */
+
+namespace App\Controllers;
+
+use App\Entities\Episode;
+use App\Models\EpisodeModel;
+use CodeIgniter\Exceptions\PageNotFoundException;
+use CodeIgniter\HTTP\RedirectResponse;
+
+class EpisodePreviewController extends BaseController
+{
+    protected Episode $episode;
+
+    public function _remap(string $method, string ...$params): mixed
+    {
+        if (count($params) < 1) {
+            throw PageNotFoundException::forPageNotFound();
+        }
+
+        // find episode by previewUUID
+        $episode = (new EpisodeModel())->getEpisodeByPreviewId($params[0]);
+
+        if (! $episode instanceof Episode) {
+            throw PageNotFoundException::forPageNotFound();
+        }
+
+        $this->episode = $episode;
+
+        if ($episode->publication_status === 'published') {
+            // redirect to episode page
+            return redirect()->route('episode', [$episode->podcast->handle, $episode->slug]);
+        }
+
+        unset($params[0]);
+
+        return $this->{$method}(...$params);
+    }
+
+    public function index(): RedirectResponse | string
+    {
+        helper('form');
+
+        return view('episode/preview-comments', [
+            'podcast' => $this->episode->podcast,
+            'episode' => $this->episode,
+        ]);
+    }
+
+    public function activity(): RedirectResponse | string
+    {
+        helper('form');
+
+        return view('episode/preview-activity', [
+            'podcast' => $this->episode->podcast,
+            'episode' => $this->episode,
+        ]);
+    }
+}