<?php


namespace Venom\Core;


class ArgumentHandler
{
    public static ?ArgumentHandler $instance = null;
    private array $arguments = [];

    public function __construct()
    {
        foreach ($_GET as $key => $item) {
            $this->arguments[htmlspecialchars($key)] = htmlspecialchars($item);
        }
        foreach ($_POST as $key => $item) {
            $this->arguments[htmlspecialchars($key)] = htmlspecialchars($item);
        }
    }

    public static function get(): ArgumentHandler
    {
        if (self::$instance === null) {
            self::$instance = new ArgumentHandler();
        }
        return self::$instance;
    }

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

    public function setItem(string $key, $item): void
    {
        $this->arguments[$key] = $item;
    }

    public function hasItem(string $key): bool
    {
        return isset($this->arguments[$key]);
    }
}