<?php

namespace App\Libraries\MyCrawler;

use App\Libraries\MyBaseLibrary;
use Symfony\Component\DomCrawler\Crawler;

abstract class MyCrawlerLibrary extends MyBaseLibrary
{
    protected function __construct(string $host)
    {
        parent::__construct($host);
    }

    final public function getCrawler($html)
    {
        return new Crawler($html);
    }

    final public function getInnerHTML(string $html, $tag = false)
    {
        return $tag ? $this->getCrawler($html)->filter($tag)->html() : $this->getCrawler($html)->html();
    }

    public function getLinks(string $html, array $options = ["tag" => "a", "attr" => "href"]): array
    {
        return $this->getCrawler($html)->filter($options["tag"])->each(
            function (Crawler $node) use (&$options) {
                return ["anchor" => $node->text(), "href" => $node->attr($options["attr"])];
            }
        );
    }

    public function getImages(string $html, array $options = ["tag" => "img", "attr" => "src"]): array
    {
        return $this->getCrawler($html)->filter($options["tag"])->each(
            function (Crawler $node) use (&$options) {
                return ["alt" => $node->text(), "src" => $node->attr($options["attr"])];
            }
        );
    }
}