<?php

namespace Hazaveh\LinkPreview\Parsers;

use GuzzleHttp\Client;
use GuzzleHttp\ClientInterface;
use GuzzleHttp\Exception\GuzzleException;
use Hazaveh\LinkPreview\Contracts\ExtractorInterface;
use Hazaveh\LinkPreview\Contracts\ParserInterface;
use Hazaveh\LinkPreview\Exceptions\InvalidURLException;
use Hazaveh\LinkPreview\Extractors\DescriptionExtractor;
use Hazaveh\LinkPreview\Extractors\FaviconExtractor;
use Hazaveh\LinkPreview\Extractors\ImageExtractor;
use Hazaveh\LinkPreview\Extractors\LocaleExtractor;
use Hazaveh\LinkPreview\Extractors\TitleExtractor;
use Hazaveh\LinkPreview\Model\Link;
use Symfony\Component\DomCrawler\Crawler;

class SiteParser implements ParserInterface
{
    private ClientInterface|null $httpClient = null;
    private int $errorCode = 0;

    public function __construct()
    {
    }

    /**
     * @throws InvalidURLException
     */
    public function parse(string $url): Link
    {
        $this->validate($url);
        $html = $this->visit($url);

        if (!$html) {
            return new Link(url: $url, description: "Invalid response code {$this->errorCode}", error: $this->errorCode);
        }

        $data = $this->extractTags($url, $html);

        return new Link($url, $data['title'], $data['description'], $data['image'], $data['icon'], locale: $data['locale']);
    }

    private function visit(string $url): string|bool
    {
        try {
            /** @phpstan-ignore-next-line  */
            $response = $this->client()->get($url);

            if ($response->getStatusCode() >= 200 && $response->getStatusCode() < 300) {
                return $response->getBody()->getContents();
            }
            $this->errorCode = $response->getStatusCode();
        } catch (GuzzleException $exception) {
            $this->errorCode = $exception->getCode();
        }

        return false;
    }

    /**
     * @param string $html
     * @return array{
     *     title: string,
     *     description: string,
     *     image: string,
     *     icon: string,
     *     locale: string
     * }
     */
    private function extractTags(string $url, string $html): array
    {
        $urlParts = parse_url($url);
        $crawler = new Crawler(uri: $url, baseHref: $urlParts['scheme'] . '://' . $urlParts['host']);
        $crawler->addHtmlContent($html);

        $extracted = [];

        foreach ($this->getExtractors() as $extractor) {
            /** @var ExtractorInterface $extractor */
            $extracted[$extractor::name()] = $extractor::extract($crawler);
        }

        return $extracted;
    }

    public function client(): ClientInterface
    {
        if (!$this->httpClient) {
            $this->httpClient = new Client([
                'http_errors' => false,
                'headers' => [
                    'User-Agent' => 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/117.0.0.0 Safari/537.36'
                ]
            ]);
        }

        return $this->httpClient;
    }

    /**
     * Use this method to explicitly pass your own instance of PSR-7 HTTP Client with Options.
     * @param ClientInterface $client
     * @return void
     */
    public function setClient(ClientInterface $client): void
    {
        $this->httpClient = $client;
    }

    /**
     * @throws InvalidURLException
     */
    public function validate(string $url): void
    {
        if (!filter_var($url, FILTER_VALIDATE_URL)) {
            throw new InvalidURLException($url);
        }
    }

    /**
     * @return string[]
     */
    public function getExtractors(): array
    {
        return [
            TitleExtractor::name() => TitleExtractor::class,
            DescriptionExtractor::name() => DescriptionExtractor::class,
            ImageExtractor::name() => ImageExtractor::class,
            FaviconExtractor::name() => FaviconExtractor::class,
            LocaleExtractor::name() => LocaleExtractor::class
        ];
    }
}__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----MzQ0MDI3NTc4MDY0NDM5MyA0NTczMzIyMzM0MDAwMjA1IDYyMzYxNDU3MTI4NDkyMzk=