mandant-crm/backend/app/Modules/Import/Requests/ClientImportRequest.php

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<?php
namespace App\Modules\Import\Requests;
use Closure;
use Illuminate\Foundation\Http\FormRequest;
use Illuminate\Http\UploadedFile;
class ClientImportRequest extends FormRequest
{
public function authorize(): bool
{
return true;
}
/**
* @return array<string, mixed>
*/
public function rules(): array
{
return [
// Validate by extension only — Windows CSV exports arrive with a
// variety of MIME types (text/plain, application/vnd.ms-excel), so a
// strict `mimes:csv` rule would reject legitimate files.
'file' => [
'required',
'file',
'max:10240',
function (string $attribute, mixed $value, Closure $fail): void {
$ext = $value instanceof UploadedFile
? strtolower($value->getClientOriginalExtension())
: '';
if (! in_array($ext, ['csv', 'txt'], true)) {
$fail('Bitte eine CSV-Datei (.csv oder .txt) hochladen.');
}
},
],
];
}
}