<?php

declare(strict_types=1);

namespace DTS;

class Old
{
    const FIELDS = [
        'task',
        'tag',
    ];

    private array $old = [];

    function __construct(array $request = [])
    {
        foreach(self::FIELDS as $field) {
            if (array_key_exists($field, $request)) {
                $this->old[$field] = $request[$field];
            }
        }
    }

    public function get(string $key, $default = null)
    {
        return $this->old[$key] ?? $default;
    }
}