feat: Phase 3 - public registration pages and Mailwizz config

app/Http/Requests/Admin/UpdateMailwizzConfigRequest.php

@@ -0,0 +1,51 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Http\Requests\Admin;
+
+use App\Models\PreregistrationPage;
+use Illuminate\Contracts\Validation\ValidationRule;
+use Illuminate\Foundation\Http\FormRequest;
+use Illuminate\Validation\Rule;
+
+class UpdateMailwizzConfigRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        $page = $this->route('page');
+        if (! $page instanceof PreregistrationPage) {
+            return false;
+        }
+
+        return $this->user()?->can('update', $page) ?? false;
+    }
+
+    /**
+     * @return array<string, array<int, ValidationRule|string>>
+     */
+    public function rules(): array
+    {
+        /** @var PreregistrationPage $page */
+        $page = $this->route('page');
+
+        return [
+            'api_key' => [
+                Rule::requiredIf(fn (): bool => $page->mailwizzConfig === null),
+                'nullable',
+                'string',
+                'max:512',
+            ],
+            'list_uid' => ['required', 'string', 'max:255'],
+            'list_name' => ['nullable', 'string', 'max:255'],
+            'field_email' => ['required', 'string', 'max:255'],
+            'field_first_name' => ['required', 'string', 'max:255'],
+            'field_last_name' => ['required', 'string', 'max:255'],
+            'field_phone' => $page->phone_enabled
+                ? ['required', 'string', 'max:255']
+                : ['nullable', 'string', 'max:255'],
+            'tag_field' => ['required', 'string', 'max:255'],
+            'tag_value' => ['required', 'string', 'max:255'],
+        ];
+    }
+}