more fixes

app/Http/Requests/Settings/RequestEmailChangeRequest.php

@@ -0,0 +1,45 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Http\Requests\Settings;
+
+use App\Models\User;
+use Illuminate\Foundation\Http\FormRequest;
+use Illuminate\Validation\Rule;
+
+class RequestEmailChangeRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    protected function prepareForValidation(): void
+    {
+        if ($this->has('new_email')) {
+            $this->merge([
+                'new_email' => strtolower(trim((string) $this->input('new_email'))),
+            ]);
+        }
+    }
+
+    public function rules(): array
+    {
+        return [
+            'new_email' => [
+                'required',
+                'string',
+                'lowercase',
+                'email',
+                'max:255',
+                Rule::unique(User::class, 'email')->ignore((int) $this->user()->id),
+                function (string $attribute, mixed $value, \Closure $fail): void {
+                    if (strtolower((string) $value) === strtolower((string) $this->user()->email)) {
+                        $fail('Please enter a different email address.');
+                    }
+                },
+            ],
+        ];
+    }
+}