<?php

namespace AppBundle\TechLetter;

class DataExtractor
{
    /**
     * @see https://fr.wikipedia.org/wiki/Mot_par_minute
     */
    const WORD_READ_BY_MINUTES = 250;

    public function extractDataForTechLetter($url)
    {
        $urlInfo = parse_url($url);

        $urlCrawler = new UrlCrawler();
        $html = $urlCrawler->crawlUrl($url);

        $parser = new HtmlParser($html);

        /**
         * Certaines données sont représentées sous 2 titres car les différents modèles utilisent des noms différents pour
         * des choses similaires
         * @todo fix it
         */
        $data = [
            'title' => substr($parser->getTitle(), 0, 250),
            'name' => substr($parser->getTitle(), 0, 250),
            'excerpt' => $parser->getMeta('description'),
            'description' => $parser->getMeta('description'),
            'host' => $urlInfo['host']
        ];

        $richSchema = $parser->getRichSchema();


        $listOfTypes = [
            "NewsArticle",
            "Report",
            "ScholarlyArticle",
            "SocialMediaPosting",
            "TechArticle",
            "Article",
            "BlogPosting",
        ];

        if ($richSchema !== false) {
            foreach ($richSchema as $schema) {
                if (
                    ! isset($schema['@type'])
                    || !in_array($schema["@type"], $listOfTypes)
                ) {
                    continue;
                }

                if (isset($schema['datePublished'])) {
                    $date = new \DateTimeImmutable($schema['datePublished']);
                    $data['date'] = $date->format('Y-m-d');
                }
                if (isset($schema['articleBody'])) {
                    $body = strip_tags($schema['articleBody']);
                    $data['readingTime'] = floor(str_word_count($body) / self::WORD_READ_BY_MINUTES);
                }
            }
        }

        $data = array_map(function ($value) {
            return trim($value);
        }, $data);

        return $data;
    }
}