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/Fediverse/Controllers/BlockController.php

@@ -0,0 +1,111 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * @copyright  2021 Podlibre
+ * @license    https://www.gnu.org/licenses/agpl-3.0.en.html AGPL3
+ * @link       https://castopod.org/
+ */
+
+namespace Modules\Fediverse\Controllers;
+
+use CodeIgniter\Controller;
+use CodeIgniter\HTTP\RedirectResponse;
+
+class BlockController extends Controller
+{
+    /**
+     * @var string[]
+     */
+    protected $helpers = ['activitypub'];
+
+    public function attemptBlockActor(): RedirectResponse
+    {
+        $rules = [
+            'handle' => 'required',
+        ];
+
+        if (! $this->validate($rules)) {
+            return redirect()
+                ->back()
+                ->withInput()
+                ->with('errors', $this->validator->getErrors());
+        }
+
+        $handle = $this->request->getPost('handle');
+
+        if ($parts = split_handle($handle)) {
+            if (
+                ($actor = get_or_create_actor($parts['username'], $parts['domain'])) === null
+            ) {
+                return redirect()
+                    ->back()
+                    ->withInput()
+                    ->with('error', 'Actor not found.');
+            }
+
+            model('ActorModel')
+                ->blockActor($actor->id);
+        }
+
+        return redirect()->back();
+    }
+
+    public function attemptUnblockActor(): RedirectResponse
+    {
+        $rules = [
+            'actor_id' => 'required',
+        ];
+
+        if (! $this->validate($rules)) {
+            return redirect()
+                ->back()
+                ->withInput()
+                ->with('errors', $this->validator->getErrors());
+        }
+
+        model('ActorModel')
+            ->unblockActor((int) $this->request->getPost('actor_id'));
+
+        return redirect()->back();
+    }
+
+    public function attemptBlockDomain(): RedirectResponse
+    {
+        $rules = [
+            'domain' => 'required',
+        ];
+
+        if (! $this->validate($rules)) {
+            return redirect()
+                ->back()
+                ->withInput()
+                ->with('errors', $this->validator->getErrors());
+        }
+
+        model('BlockedDomainModel')
+            ->blockDomain($this->request->getPost('domain'));
+
+        return redirect()->back();
+    }
+
+    public function attemptUnblockDomain(): RedirectResponse
+    {
+        $rules = [
+            'domain' => 'required',
+        ];
+
+        if (! $this->validate($rules)) {
+            return redirect()
+                ->back()
+                ->withInput()
+                ->with('errors', $this->validator->getErrors());
+        }
+
+        model('BlockedDomainModel')
+            ->unblockDomain($this->request->getPost('domain'));
+
+        return redirect()->back();
+    }
+}