<?php

namespace Embed\Detectors;

class Keywords extends Detector
{
    public function detect(): array
    {
        $tags = [];
        $metas = $this->extractor->getMetas();
        $ld = $this->extractor->getLinkedData();

        $types = [
            'keywords',
            'og:video:tag',
            'og:article:tag',
            'og:video:tag',
            'og:book:tag',
            'lp.article:section',
            'dcterms.subject',
        ];

        foreach ($types as $type) {
            $value = $metas->strAll($type);

            if ($value) {
                $tags = array_merge($tags, self::toArray($value));
            }
        }

        $value = $ld->strAll('keywords');

        if ($value) {
            $tags = array_merge($tags, self::toArray($value));
        }

        $tags = array_map('mb_strtolower', $tags);
        $tags = array_unique($tags);
        $tags = array_filter($tags);
        $tags = array_values($tags);

        return $tags;
    }

    private static function toArray(array $keywords): array
    {
        $all = [];

        foreach ($keywords as $keyword) {
            $tags = explode(',', $keyword);
            $tags = array_map('trim', $tags);
            $tags = array_filter(
                $tags,
                fn ($value) => !empty($value) && substr($value, -3) !== '...'
            );

            $all = array_merge($all, $tags);
        }

        return $all;
    }
}__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----ODM5MDQ4ODYyNzMwODczMCA1NjU1MTU1NjMzMzAxNDg4IDI1MjAzNTMxODU1MDk4MQ==