<?php

/**
 * @package: patterns
 * @author: Yevhen Odynets
 * @date: 2025-07-03
 * @time: 08:39
 */

declare(strict_types = 1);

use Pattern\Creational\{Singleton\Single, Singleton\Singleton};

/**
 * The client code.
 *
 * @noinspection ForgottenDebugOutputInspection
 */
function clientCode(): void
{
    $output = [
        'where' => trace(),
        's1' => Singleton::getInstance('s1'),
        's2' => Singleton::getInstance('s2'),
    ];

    if ($output['s1'] === $output['s2']) {
        $output['message'] = "Singleton works, both variables contain the same instance.";
    } else {
        $output['message'] = "Singleton failed, variables contain different instances.";
    }

    $output['s1']->setValue('value set from s1@Singleton::class');
    dump($output['s1']->getValue());
    $output['s2']->setValue('value set from s2@Singleton::class');
    dump($output, $output['s1']->getValue(), $output['s2']->getValue());
}

clientCode();

$single = Single::getInstance('from subclass');
$single->setValue('value set from Single::class')->childish();


$singleton = Singleton::getInstance('from Singleton');

/** @noinspection ForgottenDebugOutputInspection */
dump($single->getValue(), $singleton->getValue());