nextcloud/php/src/Data/Setup.php

<?php
declare(strict_types=1);

namespace AIO\Data;

use AIO\Auth\PasswordGenerator;

readonly class Setup {
    public function __construct(
        private PasswordGenerator $passwordGenerator,
        private ConfigurationManager $configurationManager,
    ) {
    }

    public function Setup() : string {
        if(!$this->CanBeInstalled()) {
            return '';
        }

        $password = $this->passwordGenerator->GeneratePassword(8);
        $this->configurationManager->password = $password;
        return $password;
    }

    public function CanBeInstalled() : bool {
        return !file_exists(DataConst::GetConfigFile());
    }
}