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<?php |
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namespace Coco\SourceWatcher\Vendors\StackOverflow; |
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use Coco\SourceWatcher\Watcher\Handler\WebPageHandler; |
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use DOMElement; |
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use DOMNamedNodeMap; |
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use DOMNodeList; |
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use DOMXPath; |
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/** |
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* Class StackOverflowWebPageHandler |
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* |
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* @package Coco\SourceWatcher\Vendors\StackOverflow |
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*/ |
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class StackOverflowWebPageHandler extends WebPageHandler |
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{ |
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private array $results = []; |
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public function getResults () : array |
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{ |
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return $this->results; |
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} |
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public function read () : void |
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{ |
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parent::read(); |
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$this->results = []; |
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$finder = new DomXPath( $this->dom ); |
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$classname = "listResults"; |
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$listResultsDom = $finder->query( "//*[contains(@class, '$classname')]" ); // DOMNodeList |
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for ( $i = 0; $i < $listResultsDom->count(); $i++ ) { |
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$this->processListResults( $listResultsDom->item( $i ) ); |
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} |
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} |
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private function processListResults ( DOMElement $currentDomNode ) : void |
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{ |
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if ( $currentDomNode->hasChildNodes() ) { |
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$children = $currentDomNode->childNodes; // DOMNodeList |
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for ( $i = 0; $i < $children->count(); $i++ ) { |
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$currentChildrenNode = $children->item( $i ); |
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if ( $currentChildrenNode instanceof DOMElement ) { |
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$this->processChildNodes( $currentChildrenNode ); |
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} |
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} |
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} |
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} |
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public static string $JOB_SEPARATOR = "You might be interested in these jobs:"; |
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private function processChildNodes ( DOMElement $currentChildrenNode ) : void |
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{ |
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$currentJob = new StackOverflowJob(); |
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$currentJob = $this->setBasicAttributes( $currentChildrenNode->attributes, $currentJob ); |
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if ( $currentChildrenNode->hasChildNodes() ) { |
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if ( trim( $currentChildrenNode->nodeValue ) != StackOverflowWebPageHandler::$JOB_SEPARATOR ) { |
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$extraChildNodes = $currentChildrenNode->childNodes; // DOMNodeList |
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for ( $i = 0; $i < $extraChildNodes->count(); $i++ ) { |
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$currentExtraChildNode = $extraChildNodes->item( $i ); // DOMElement or DOMText |
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if ( $currentExtraChildNode instanceof DOMElement ) { |
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$currentJob = $this->processExtraChildNodes( $currentExtraChildNode, $currentJob ); |
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} |
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} |
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} |
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} |
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if ( $currentJob->allAttributesDefined() ) { |
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array_push( $this->results, $currentJob ); |
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} |
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} |
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private function setBasicAttributes ( |
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DOMNamedNodeMap $attributes, |
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StackOverflowJob $stackOverflowJob |
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) : StackOverflowJob { |
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if ( $attributes != null ) { |
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foreach ( $attributes as $currentAttribute ) { |
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if ( $currentAttribute->name == "data-jobid" ) { |
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$stackOverflowJob->setJobId( $currentAttribute->value ); |
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} |
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if ( $currentAttribute->name == "data-result-id" ) { |
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$stackOverflowJob->setResultId( $currentAttribute->value ); |
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} |
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if ( $currentAttribute->name == "data-preview-url" ) { |
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$stackOverflowJob->setPreviewUrl( $currentAttribute->value ); |
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} |
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} |
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} |
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return $stackOverflowJob; |
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} |
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private function processExtraChildNodes ( |
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DOMElement $currentExtraChildNode, |
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StackOverflowJob $stackOverflowJob |
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) : StackOverflowJob { |
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if ( $currentExtraChildNode->hasChildNodes() ) { |
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$currentExtraChildNodeChildren = $currentExtraChildNode->childNodes; // DOMNodeList |
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$nodeCount = $currentExtraChildNodeChildren->count(); |
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if ( $nodeCount >= 6 ) { |
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for ( $i = 0; $i < $nodeCount; $i++ ) { |
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$currentDeepNode = $currentExtraChildNodeChildren->item( $i ); // DOMElement or DOMText |
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if ( $currentDeepNode instanceof DOMElement ) { |
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$stackOverflowJob = $this->processImageDivBlocks( $currentDeepNode, $stackOverflowJob ); |
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} |
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} |
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} |
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} |
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return $stackOverflowJob; |
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} |
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private function processImageDivBlocks ( |
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DOMElement $currentDeepNode, |
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StackOverflowJob $stackOverflowJob |
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) : StackOverflowJob { |
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if ( $currentDeepNode->childNodes->count() == 2 ) { |
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$stackOverflowJob = $this->processImageBlock( $currentDeepNode->childNodes->item( 1 )->attributes, |
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$stackOverflowJob ); |
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} |
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if ( $currentDeepNode->tagName == "div" && $currentDeepNode->hasChildNodes() ) { |
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$stackOverflowJob = $this->processDivBlock( $currentDeepNode->childNodes, $stackOverflowJob ); |
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} |
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return $stackOverflowJob; |
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} |
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private function processImageBlock ( |
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DOMNamedNodeMap $currentDeepNodeAttributes, |
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StackOverflowJob $stackOverflowJob |
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) : StackOverflowJob { |
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if ( $currentDeepNodeAttributes != null && sizeof( $currentDeepNodeAttributes ) == 2 ) { |
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$attr1 = $currentDeepNodeAttributes[0]; // DOMAttr |
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$attr2 = $currentDeepNodeAttributes[1]; // DOMAttr |
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$stackOverflowJob->setLogo( $attr1->name == "src" ? $attr1->value : $attr2->value ); |
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} |
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return $stackOverflowJob; |
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} |
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private function processDivBlock ( |
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DOMNodeList $currentDeepNodeChildren, |
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StackOverflowJob $stackOverflowJob |
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) : StackOverflowJob { |
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for ( $i = 0; $i < $currentDeepNodeChildren->count(); $i++ ) { |
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$currentDeepNodeChildrenElement = $currentDeepNodeChildren->item( $i ); // DOMElement or DOMText |
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if ( $currentDeepNodeChildrenElement instanceof DOMElement ) { |
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$stackOverflowJob = $this->processH2AndH3Elements( $currentDeepNodeChildrenElement, $stackOverflowJob ); |
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} |
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} |
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return $stackOverflowJob; |
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} |
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private function refineCompanyName ( string $companyName ) : string |
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{ |
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if ( strpos( $companyName, "\r\n" ) !== false ) { |
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$companyNameParts = explode( "\r\n", $companyName ); |
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foreach ( $companyNameParts as $index => $currentCompanyNamePart ) { |
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$companyNameParts[$index] = trim( $currentCompanyNamePart ); |
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} |
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return implode( " ", $companyNameParts ); |
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} else { |
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return $companyName; |
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} |
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} |
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private function setCompanyAndLocation ( |
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DOMElement $element, |
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StackOverflowJob $stackOverflowJob |
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) : StackOverflowJob { |
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if ( $element->attributes->count() == 0 ) { |
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$stackOverflowJob->setCompany( $this->refineCompanyName( trim( $element->nodeValue ) ) ); |
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} |
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if ( $element->attributes->count() == 1 && $element->getAttribute( "class" ) == "fc-black-500" ) { |
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$stackOverflowJob->setLocation( trim( $element->nodeValue ) ); |
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} |
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return $stackOverflowJob; |
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} |
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private function processH2AndH3Elements ( |
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DOMElement $currentDeepNodeChildrenElement, |
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StackOverflowJob $stackOverflowJob |
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) : StackOverflowJob { |
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if ( $currentDeepNodeChildrenElement->tagName == "h2" ) { |
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$stackOverflowJob->setTitle( trim( $currentDeepNodeChildrenElement->nodeValue ) ); |
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} |
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if ( $currentDeepNodeChildrenElement->tagName == "h3" && $currentDeepNodeChildrenElement->hasChildNodes() ) { |
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$companyAndLocationDomNodeList = $currentDeepNodeChildrenElement->childNodes; // DOMNodeList |
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for ( $i = 0; $i < $companyAndLocationDomNodeList->count(); $i++ ) { |
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$currentCompanyAndLocationElement = $companyAndLocationDomNodeList->item( $i ); // DOMElement or DOMText |
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if ( $currentCompanyAndLocationElement instanceof DOMElement && $currentCompanyAndLocationElement->nodeName == "span" ) { |
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$stackOverflowJob = $this->setCompanyAndLocation( $currentCompanyAndLocationElement, |
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$stackOverflowJob ); |
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} |
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} |
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} |
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return $stackOverflowJob; |
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} |
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} |
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TheCocoTeam /
source-watcher-core
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