1 files changed, 144 insertions, 0 deletions
diff --git a/www/wiki/extensions/SemanticMediaWiki/src/MediaWiki/Api/Browse/SubjectLookup.php b/www/wiki/extensions/SemanticMediaWiki/src/MediaWiki/Api/Browse/SubjectLookup.php
new file mode 100644
index 00000000..c995619e
--- /dev/null
+++ b/www/wiki/extensions/SemanticMediaWiki/src/MediaWiki/Api/Browse/SubjectLookup.php
@@ -0,0 +1,144 @@
+<?php
+
+namespace SMW\MediaWiki\Api\Browse;
+
+use SMW\ApplicationFactory;
+use SMW\DIWikiPage;
+use SMW\MediaWiki\Specials\Browse\HtmlBuilder;
+use SMW\Store;
+use SMW\Exception\RedirectTargetUnresolvableException;
+use SMW\Exception\ParameterNotFoundException;
+
+/**
+ * @license GNU GPL v2+
+ * @since 3.0
+ *
+ * @author mwjames
+ */
+class SubjectLookup extends Lookup {
+
+	/**
+	 * @var Store
+	 */
+	private $store;
+
+	/**
+	 * @since 3.0
+	 *
+	 * @param Store $store
+	 */
+	public function __construct( Store $store ) {
+		$this->store = $store;
+	}
+
+	/**
+	 * @since 3.0
+	 *
+	 * @return string|integer
+	 */
+	public function getVersion() {
+		return 'SubjectLookup:' . self::VERSION;
+	}
+
+	/**
+	 * @since 3.0
+	 *
+	 * @param array $parameters
+	 *
+	 * @return array
+	 */
+	public function lookup( array $parameters ) {
+
+		if ( !isset( $parameters['subject'] ) ) {
+			throw new ParameterNotFoundException( 'subject' );
+		}
+
+		if ( !isset( $parameters['ns'] ) ) {
+			throw new ParameterNotFoundException( 'ns' );
+		}
+
+		if ( !isset( $parameters['iw'] ) ) {
+			$parameters['iw'] = '';
+		}
+
+		if ( !isset( $parameters['subobject'] ) ) {
+			$parameters['subobject'] = '';
+		}
+
+		if ( isset( $parameters['type'] ) && $parameters['type'] === 'html' ) {
+			$data = $this->buildHTML( $parameters );
+		} else {
+			$data = $this->doSerialize( $parameters );
+		}
+
+		// Changing this output format requires to set a new version
+		$res = [
+			'query' => $data,
+			'meta' => [
+				'type'  => 'subject'
+			]
+		];
+
+		return $res;
+	}
+
+	private function buildHTML( $params ) {
+
+		if ( !isset( $params['options'] ) ) {
+			throw new ParameterNotFoundException( 'options' );
+		}
+
+		$subject = new DIWikiPage(
+			$params['subject'],
+			$params['ns'],
+			$params['iw'],
+			$params['subobject']
+		);
+
+		$htmlBuilder = new HtmlBuilder(
+			$this->store,
+			$subject
+		);
+
+		$htmlBuilder->setOptions(
+			$params['options']
+		);
+
+		return $htmlBuilder->buildHTML();
+	}
+
+	private function doSerialize( $params ) {
+
+		$applicationFactory = ApplicationFactory::getInstance();
+		$subobject = isset( $params['subobject'] ) ? $params['subobject'] : '';
+
+		$title = $applicationFactory->newTitleFactory()->newFromText(
+			$params['subject'],
+			$params['ns']
+		);
+
+		$deepRedirectTargetResolver = $applicationFactory->newMwCollaboratorFactory()->newDeepRedirectTargetResolver();
+
+		try {
+			$title = $deepRedirectTargetResolver->findRedirectTargetFor( $title );
+		} catch ( \Exception $e ) {
+			throw new RedirectTargetUnresolvableException( $e->getMessage() );
+		}
+
+		$dataItem = new DIWikiPage(
+			$title->getDBkey(),
+			$title->getNamespace(),
+			$title->getInterwiki(),
+			$subobject
+		);
+
+		$semanticData = $applicationFactory->getStore()->getSemanticData(
+			$dataItem
+		);
+
+		$semanticDataSerializer = $applicationFactory->newSerializerFactory()->newSemanticDataSerializer();
+
+		return $semanticDataSerializer->serialize( $semanticData );
+	}
+
+}