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<?php |
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/** |
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* File: ModelOffersHtmlProvider.php |
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* |
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* @author Maciej Sławik <[email protected]> |
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* Github: https://github.com/maciejslawik |
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*/ |
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namespace MSlwk\Otomoto\App\Stats; |
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use MSlwk\Otomoto\App\Base\UrlPoviderInterface; |
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use MSlwk\Otomoto\App\Manufacturer\Data\ManufacturerDTOInterface; |
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use MSlwk\Otomoto\App\Manufacturer\Url\ManufacturerUrlSuffixProviderInterface; |
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use MSlwk\Otomoto\App\Model\Data\ModelDTOInterface; |
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use MSlwk\Otomoto\App\Model\Url\ModelUrlSuffixProviderInterface; |
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use MSlwk\Otomoto\App\Stats\Filter\FilterArray; |
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use MSlwk\Otomoto\App\Stats\Filter\FilterInterface; |
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use MSlwk\Otomoto\App\Stats\Pager\PagerInterface; |
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use MSlwk\Otomoto\Middleware\Webpage\Adapter\GETHandlerInterface; |
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use MSlwk\Otomoto\Middleware\Webpage\Data\UrlDTO; |
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use MSlwk\Otomoto\Middleware\Webpage\Data\UrlDTOArray; |
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use MSlwk\Otomoto\Middleware\Webpage\Data\WebpageDTOArray; |
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use MSlwk\Otomoto\Middleware\Webpage\Data\WebpageDTOInterface; |
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use MSlwk\Otomoto\Middleware\Webpage\Factory\GETHandlerAdapterFactoryInterface; |
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use Symfony\Component\DomCrawler\Crawler; |
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/** |
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* Class ModelOffersHtmlProvider |
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* @package MSlwk\Otomoto\App\Stats |
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*/ |
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class ModelOffersHtmlProvider |
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{ |
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const HTML_PAGER_SELECTOR = 'ul.om-pager'; |
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const HTML_PAGER_ELEMENT_SELECTOR = 'span.page'; |
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const HTML_OFFER_LIST_SELECTOR = 'div.offers.list'; |
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/** |
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* @var GETHandlerAdapterFactoryInterface |
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*/ |
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private $adapterFactory; |
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/** |
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* @var UrlPoviderInterface |
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*/ |
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private $urlPovider; |
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/** |
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* @var ManufacturerUrlSuffixProviderInterface |
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*/ |
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private $manufacturerUrlSuffixProvider; |
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/** |
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* @var ModelUrlSuffixProviderInterface |
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*/ |
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private $modelUrlSuffixProvider; |
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/** |
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* @var PagerInterface |
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*/ |
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private $pager; |
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/** |
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* @var GETHandlerInterface |
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*/ |
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private $GETAdapter; |
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/** |
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* ModelOffersHtmlProvider constructor. |
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* @param GETHandlerAdapterFactoryInterface $adapterFactory |
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* @param UrlPoviderInterface $urlPovider |
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* @param ManufacturerUrlSuffixProviderInterface $manufacturerUrlSuffixProvider |
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* @param ModelUrlSuffixProviderInterface $modelUrlSuffixProvider |
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* @param PagerInterface $pager |
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*/ |
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public function __construct( |
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GETHandlerAdapterFactoryInterface $adapterFactory, |
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UrlPoviderInterface $urlPovider, |
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ManufacturerUrlSuffixProviderInterface $manufacturerUrlSuffixProvider, |
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ModelUrlSuffixProviderInterface $modelUrlSuffixProvider, |
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PagerInterface $pager |
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) { |
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$this->adapterFactory = $adapterFactory; |
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$this->urlPovider = $urlPovider; |
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$this->manufacturerUrlSuffixProvider = $manufacturerUrlSuffixProvider; |
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$this->modelUrlSuffixProvider = $modelUrlSuffixProvider; |
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$this->pager = $pager; |
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} |
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/** |
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* @param ManufacturerDTOInterface $manufacturer |
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* @param ModelDTOInterface $model |
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* @param FilterArray $filters |
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* @return string |
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*/ |
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public function getAllPagesHtml( |
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ManufacturerDTOInterface $manufacturer, |
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ModelDTOInterface $model, |
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FilterArray $filters |
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): string { |
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$baseUrl = $this->buildBaseUrl($manufacturer, $model, $filters); |
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$this->GETAdapter = $this->adapterFactory->create(); |
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$baseUrlDTO = new UrlDTOArray(new UrlDTO($baseUrl)); |
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$baseWebpageDTO = $this->GETAdapter->getWebpages($baseUrlDTO)->current(); |
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$lastPage = $this->getLastPageNumber($baseWebpageDTO); |
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$allPagesDTOs = new WebpageDTOArray(); |
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if ($lastPage >= 2) { |
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$allPagesDTOs = $this->getNextPages($lastPage, $baseUrl); |
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} |
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$allPagesDTOs->add($baseWebpageDTO); |
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$html = $this->extractOffersHtml($allPagesDTOs); |
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return $html; |
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} |
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/** |
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* @param ManufacturerDTOInterface $manufacturer |
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* @param ModelDTOInterface $model |
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* @param FilterArray $filters |
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* @return string |
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*/ |
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private function buildBaseUrl( |
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ManufacturerDTOInterface $manufacturer, |
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ModelDTOInterface $model, |
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FilterArray $filters |
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): string { |
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$baseUrl = $this->urlPovider->getBaseUrl(); |
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$baseUrl .= $this->manufacturerUrlSuffixProvider->getUrlSuffix($manufacturer); |
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$baseUrl .= $this->modelUrlSuffixProvider->getUrlSuffix($model); |
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$baseUrl .= '?'; |
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/** @var FilterInterface $filter */ |
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foreach ($filters as $filter) { |
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$baseUrl .= "{$filter->getName()}={$filter->getValue()}&"; |
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} |
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return $baseUrl; |
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} |
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/** |
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* @param WebpageDTOInterface $baseWebpageDTO |
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* @return int |
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*/ |
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private function getLastPageNumber(WebpageDTOInterface $baseWebpageDTO): int |
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{ |
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$crawler = new Crawler($baseWebpageDTO->getHtml()); |
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$pagerListItems = $crawler |
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->filter(self::HTML_PAGER_SELECTOR) |
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->filter(self::HTML_PAGER_ELEMENT_SELECTOR); |
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$lastPagerItem = $pagerListItems->getNode($pagerListItems->count() - 2); |
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return $lastPagerItem ? (int)$lastPagerItem->textContent : 0; |
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} |
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/** |
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* @param int $lastPage |
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* @param string $baseUrl |
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* @return WebpageDTOArray |
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*/ |
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private function getNextPages(int $lastPage, string $baseUrl): WebpageDTOArray |
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{ |
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$urlDTOs = new UrlDTOArray(); |
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for ($i = 2; $i <= $lastPage; $i++) { |
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$urlDTO = new UrlDTO($baseUrl . $this->pager->getPagerParameter($i)); |
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$urlDTOs->add($urlDTO); |
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} |
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$allPagesDTOs = $this->GETAdapter->getWebpages($urlDTOs); |
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return $allPagesDTOs; |
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} |
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/** |
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* @param WebpageDTOArray $allPagesDTOs |
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* @return string |
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*/ |
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private function extractOffersHtml(WebpageDTOArray $allPagesDTOs): string |
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{ |
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$html = ''; |
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foreach ($allPagesDTOs as $pageDTO) { |
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$crawler = new Crawler($pageDTO->getHtml()); |
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$offersList = $crawler->filter(self::HTML_OFFER_LIST_SELECTOR); |
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if ($offersList->count()) { |
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$html .= $offersList->html(); |
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} |
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} |
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return $html; |
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} |
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} |
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maciejslawik /
otomoto-scrapper
