refactor(modules): extract castopod parts into a modules/ folder for a scalable HMVC structure

- create Admin, Analytics, Auth, Fediverse and Install modules in the root modules/ folder
- rename
ActivityPub to Fediverse

modules/Admin/Controllers/PageController.php

@@ -0,0 +1,118 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * @copyright  2020 Podlibre
+ * @license    https://www.gnu.org/licenses/agpl-3.0.en.html AGPL3
+ * @link       https://castopod.org/
+ */
+
+namespace Modules\Admin\Controllers;
+
+use App\Entities\Page;
+use App\Models\PageModel;
+use CodeIgniter\Exceptions\PageNotFoundException;
+use CodeIgniter\HTTP\RedirectResponse;
+
+class PageController extends BaseController
+{
+    protected ?Page $page;
+
+    public function _remap(string $method, string ...$params): mixed
+    {
+        if ($params === []) {
+            return $this->{$method}();
+        }
+
+        if ($this->page = (new PageModel())->find($params[0])) {
+            return $this->{$method}();
+        }
+
+        throw PageNotFoundException::forPageNotFound();
+    }
+
+    public function list(): string
+    {
+        $data = [
+            'pages' => (new PageModel())->findAll(),
+        ];
+
+        return view('Modules\Admin\Views\page\list', $data);
+    }
+
+    public function view(): string
+    {
+        return view('Modules\Admin\Views\page\view', [
+            'page' => $this->page,
+        ]);
+    }
+
+    public function create(): string
+    {
+        helper('form');
+
+        return view('Modules\Admin\Views\page\create');
+    }
+
+    public function attemptCreate(): RedirectResponse
+    {
+        $page = new Page([
+            'title' => $this->request->getPost('title'),
+            'slug' => $this->request->getPost('slug'),
+            'content_markdown' => $this->request->getPost('content'),
+        ]);
+
+        $pageModel = new PageModel();
+
+        if (! $pageModel->insert($page)) {
+            return redirect()
+                ->back()
+                ->withInput()
+                ->with('errors', $pageModel->errors());
+        }
+
+        return redirect()
+            ->route('page-list')
+            ->with('message', lang('Page.messages.createSuccess', [
+                'pageTitle' => $page->title,
+            ]));
+    }
+
+    public function edit(): string
+    {
+        helper('form');
+
+        replace_breadcrumb_params([
+            0 => $this->page->title,
+        ]);
+        return view('Modules\Admin\Views\page\edit', [
+            'page' => $this->page,
+        ]);
+    }
+
+    public function attemptEdit(): RedirectResponse
+    {
+        $this->page->title = $this->request->getPost('title');
+        $this->page->slug = $this->request->getPost('slug');
+        $this->page->content_markdown = $this->request->getPost('content');
+
+        $pageModel = new PageModel();
+
+        if (! $pageModel->update($this->page->id, $this->page)) {
+            return redirect()
+                ->back()
+                ->withInput()
+                ->with('errors', $pageModel->errors());
+        }
+
+        return redirect()->route('page-list');
+    }
+
+    public function delete(): RedirectResponse
+    {
+        (new PageModel())->delete($this->page->id);
+
+        return redirect()->route('page-list');
+    }
+}