<?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.');
                    }
                },
            ],
        ];
    }
}