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<?php |
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namespace Core23\LastFm\Crawler; |
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use Core23\LastFm\Model\Event; |
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use Symfony\Component\DomCrawler\Crawler; |
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final class ArtistEventCrawler extends AbstractCrawler implements ArtistEventCrawlerInterface |
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{ |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getArtistYears(string $artist): array |
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{ |
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$node = $this->crawlUrl($artist); |
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if (null === $node) { |
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return []; |
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} |
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$years = $node->filter('.content-top .secondary-nav-item-link') |
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->each(static function (Crawler $node) { |
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return (int) trim($node->text()); |
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}) |
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; |
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sort($years); |
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array_shift($years); |
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return $years; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getEvents(string $artist, ?int $year, int $page = 1): array |
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{ |
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$node = $this->crawlUrl($artist, $year, $page); |
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if (null === $node) { |
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return []; |
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} |
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return $node->filter('.events-list-item')->each(function (Crawler $node): Event { |
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return $this->parseEvent($node); |
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}); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getYearPages(string $artist, ?int $year): int |
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{ |
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$node = $this->crawlUrl($artist, $year); |
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if (null === $node) { |
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return 0; |
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} |
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return $this->countListPages($node); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getYearCount(string $artist, ?int $year, int $page = 1): int |
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{ |
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$node = $this->crawlUrl($artist, $year, $page); |
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if (null === $node) { |
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return 0; |
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} |
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$perPage = $this->countListEvents($node); |
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$pages = $this->countListPages($node); |
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if ($pages) { |
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$node = $this->crawlUrl($artist, $year, $pages); |
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if (null === $node) { |
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return $perPage; |
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} |
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$count = $this->countListEvents($node); |
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return ($pages - 1) * $perPage + $count; |
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} |
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return $perPage; |
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} |
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/** |
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* @param Crawler $node |
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* |
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* @return int |
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*/ |
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private function countListPages(Crawler $node): int |
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{ |
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$pagination = $this->parseString($node->filter('.pagination .pagination-page')->last()); |
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return $pagination ? (int) preg_replace('/.* of /', '', $pagination) : 1; |
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} |
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/** |
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* @param Crawler $node |
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* |
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* @return int |
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*/ |
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private function countListEvents(Crawler $node): int |
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{ |
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return $node->filter('.events-list-item')->count(); |
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} |
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/** |
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* @param string $artist |
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* @param int|null $year |
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* @param int $page |
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* |
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* @return Crawler|null |
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*/ |
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private function crawlUrl(string $artist, ?int $year = null, int $page = 1): ?Crawler |
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{ |
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$url = 'https://www.last.fm/artist/'.$artist.'/+events/'.($year ?: ''); |
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return $this->crawl($url, [ |
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'page' => $page, |
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]); |
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} |
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} |
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core23 /
lastfm-php-api
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