<?php

namespace Kirby\Http;

use Kirby\Toolkit\Obj;

/**
 * A wrapper around a URL query string
 * that converts it into a Kirby Obj for easier
 * access of each query attribute.
 *
 * @package   Kirby Http
 * @author    Bastian Allgeier <bastian@getkirby.com>
 * @link      https://getkirby.com
 * @copyright Bastian Allgeier GmbH
 * @license   https://opensource.org/licenses/MIT
 */
class Query extends Obj
{
    public function __construct($query)
    {
        if (is_string($query) === true) {
            parse_str(ltrim($query, '?'), $query);
        }

        parent::__construct($query ?? []);
    }

    public function isEmpty(): bool
    {
        return empty((array)$this) === true;
    }

    public function isNotEmpty(): bool
    {
        return empty((array)$this) === false;
    }

    public function __toString(): string
    {
        return $this->toString();
    }

    public function toString($questionMark = false): string
    {
        $query = http_build_query($this, '', '&', PHP_QUERY_RFC3986);

        if (empty($query) === true) {
            return '';
        }

        if ($questionMark === true) {
            $query = '?' . $query;
        }

        return $query;
    }
}