autocde2.0/app/Http/Requests/API/File/KeepDirectoryUploadRequest.php

<?php

namespace App\Http\Requests\API\File;

use App\Models\Enums\FileObjectType;
use Illuminate\Foundation\Http\FormRequest;
use Illuminate\Validation\Rules\Enum;
use Illuminate\Validation\Rules\File;

class KeepDirectoryUploadRequest extends FormRequest
{
    /**
     * Determine if the user is authorized to make this request.
     */
    public function authorize(): bool
    {
        return true;
    }

    /**
     * Get the validation rules that apply to the request.
     *
     * @return array<string, \Illuminate\Contracts\Validation\ValidationRule|array<mixed>|string>
     */
    public function rules(): array
    {
        $rules =  [
            "files" => "required|array",
            "folders" => "required|array",
            "object_type" => [
                "required",
                new Enum(FileObjectType::class),
            ],
            "object_id" => "required|min:0",
            "names" => "array",
            "folder_id" => "min:0"
        ];

        $rules['files.*'][] = File::types(['txt', 'jpeg', 'png', 'gif', 'pdf', 'xls', 'xlsx', 'zip', 'wps', 'docx', 'doc'])->max("2gb");

        return $rules;
    }
}