<?php

namespace App\Libraries;

use Symfony\Component\DomCrawler\Crawler;

class CrawlerLibrary extends WebBaseLibrary
{
    public function __construct(string $host)
    {
        parent::__construct($host);
    }

    final public function getContent(string $url): string
    {
        $response = $this->getClient()->request('GET', $this->gethost() . $url);
        return $response->getBody()->getContents();
    }

    final public function getInnerHTML(string $url, $tag = false)
    {
        $crawler = new Crawler($this->getContent($url));
        return $tag ? $crawler->filter($tag)->html() : $crawler->html();
    }

    final public function getLinks(string $html, string $tag = "a"): array
    {
        $crawler = new Crawler($html);
        return $crawler->filter($tag)->each(
            function (Crawler $node) {
                return $node->attr("href");
            }
        );
    }

    final public function getImages(string $html, $tag = "img"): array
    {
        $crawler = new Crawler($html);
        return $crawler->filter($tag)->each(
            function (Crawler $node) {
                return $node->attr("src");
            }
        );
    }
}