<?php

namespace KupShop\ContentBundle\Util;

use KupShop\ContentBundle\Exception\UnknownSitemapTypeException;
use KupShop\ContentBundle\Sitemap\SitemapInterface;

class SitemapLocator
{
    private $handlers;

    public function __construct(iterable $handlers)
    {
        $this->handlers = $handlers;
    }

    public function getTypes(): array
    {
        $types = [];

        foreach ($this->handlers as $handler) {
            if ($handler::isAllowed()) {
                $types[] = $handler::getType();
            }
        }

        return $types;
    }

    public function getSitemap(string $type): SitemapInterface
    {
        foreach ($this->handlers as $handler) {
            if ($handler::getType() === $type && $handler::isAllowed()) {
                return $handler;
            }
        }

        throw new UnknownSitemapTypeException($type);
    }
}