<?php

namespace ctiso;

class Url {
    public $parts = [];
    public $parent/*: Url*/;

    function __construct() {
    }

    function setParent($parent) {
        $this->parent = $parent;
    }

    function setQuery($parts) {
        $this->parts = $parts;
    }

    function addQueryParam($key, $value) {
        $this->parts[$key] = $value;
    }

    function toString() {
        return '?' . http_build_query(array_merge($this->parts, $this->parent ? $this->parent->parts : []));
    }    
}