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<?php |
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/* |
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* (c) Christian Gripp <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Core23\LastFm\Crawler; |
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use Core23\LastFm\Model\Event; |
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use Core23\LastFm\Model\GeoLocation; |
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use DateTime; |
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use Symfony\Component\DomCrawler\Crawler; |
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final class EventListCrawler extends AbstractCrawler implements EventListCrawlerInterface |
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{ |
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private const BASE_URL = 'https://www.last.fm/events'; |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getEvents(GeoLocation $location, $radius = 100, int $page = 1): array |
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{ |
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$node = $this->crawlUrl($location, $radius, $page); |
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if (null === $node) { |
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return []; |
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} |
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$resultList = []; |
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$node->filter('.page-content section')->each(function (Crawler $node) use (&$resultList) { |
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$headingNode = $node->filter('.group-heading'); |
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$datetime = new DateTime(trim($headingNode->text())); |
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$resultList = array_merge($resultList, $this->crawlEventListGroup($node, $datetime)); |
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}); |
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return $resultList; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getPages(GeoLocation $location, $radius = 100): int |
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{ |
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$node = $this->crawlUrl($location, $radius); |
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if (null === $node) { |
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return 0; |
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} |
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$lastNode = $node->filter('.pagination .pagination-page')->last(); |
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return (int) $lastNode->text(); |
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} |
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/** |
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* @param Crawler $node |
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* @param DateTime $datetime |
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* |
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* @return array |
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*/ |
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private function crawlEventListGroup(Crawler $node, DateTime $datetime): array |
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{ |
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return $node->filter('.events-list-item')->each( |
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function (Crawler $node) use ($datetime): Event { |
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return $this->parseEvent($node, $datetime); |
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} |
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); |
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} |
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/** |
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* @param GeoLocation $location |
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* @param int $radius |
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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(GeoLocation $location, int $radius, int $page = 1): ?Crawler |
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{ |
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$url = static::BASE_URL; |
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$url .= '?location_0=Germany'; |
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$url .= '&location_1='.$location->getLongitude(); |
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$url .= '&location_2='.$location->getLatitude(); |
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$url .= '&radius='.($radius*1000); |
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$url .= '&page='.$page; |
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return $this->crawl($url); |
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} |
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} |
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core23 /
lastfm-php-api
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