1 files changed, 221 insertions, 0 deletions
diff --git a/CommentStreams/includes/CommentStreamsSMWInterface.php b/CommentStreams/includes/CommentStreamsSMWInterface.php
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+++ b/CommentStreams/includes/CommentStreamsSMWInterface.php
@@ -0,0 +1,221 @@
+<?php
+
+/*
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+namespace MediaWiki\Extension\CommentStreams;
+
+use ConfigException;
+use ExtensionRegistry;
+use JobQueueGroup;
+use MediaWiki\MediaWikiServices;
+use SMW\DIProperty;
+use SMW\DIWikiPage;
+use SMW\MediaWiki\Jobs\UpdateJob;
+use SMW\PropertyRegistry;
+use SMW\SemanticData;
+use SMW\Store;
+use SMW\StoreFactory;
+use SMWDataItem;
+use SMWDIBlob;
+use SMWDINumber;
+use Title;
+use User;
+
+class CommentStreamsSMWInterface {
+	/**
+	 * @var bool
+	 */
+	private $isLoaded;
+
+	/**
+	 * @param ExtensionRegistry $extensionRegistry
+	 */
+	public function __construct(
+		ExtensionRegistry $extensionRegistry
+	) {
+		$this->isLoaded = $extensionRegistry->isLoaded( 'SemanticMediaWiki' );
+	}
+
+	/**
+	 * @return bool
+	 */
+	public function isLoaded() : bool {
+		return $this->isLoaded;
+	}
+
+	/**
+	 * @param Title $title
+	 */
+	public function update( Title $title ) {
+		if ( !$this->isLoaded ) {
+			return;
+		}
+		$job = new UpdateJob( $title, [] );
+		JobQueueGroup::singleton()->push( $job );
+	}
+
+	/**
+	 * return the value of a property on a user page
+	 *
+	 * @param User $user the user
+	 * @param string $propertyName the name of the property
+	 * @return string|Title|null the value of the property
+	 */
+	public function getUserProperty( User $user, string $propertyName ) {
+		if ( !$this->isLoaded ) {
+			return null;
+		}
+		$userpage = $user->getUserPage();
+		if ( $userpage->exists() ) {
+			$subject = DIWikiPage::newFromTitle( $userpage );
+			$store = StoreFactory::getStore();
+			$data = $store->getSemanticData( $subject );
+			$property = DIProperty::newFromUserLabel( $propertyName );
+			$values = $data->getPropertyValues( $property );
+			if ( count( $values ) > 0 ) {
+				// this property should only have one value so pick the first one
+				$value = $values[0];
+				if ( ( defined( 'SMWDataItem::TYPE_STRING' ) &&
+						$value->getDIType() == SMWDataItem::TYPE_STRING ) ||
+					$value->getDIType() == SMWDataItem::TYPE_BLOB ) {
+					return $value->getString();
+				} elseif ( $value->getDIType() == SMWDataItem::TYPE_WIKIPAGE ) {
+					return $value->getTitle();
+				}
+			}
+		}
+		return null;
+	}
+
+	/**
+	 * Initialize extra Semantic MediaWiki properties.
+	 * This won't get called unless Semantic MediaWiki is installed.
+	 * @throws ConfigException
+	 */
+	public static function initProperties() {
+		$services = MediaWikiServices::getInstance();
+		$config = $services->getConfigFactory()->makeConfig( 'CommentStreams' );
+		$enableVoting = (bool)$config->get( 'CommentStreamsEnableVoting' );
+		$pr = PropertyRegistry::getInstance();
+		$pr->registerProperty( '___CS_ASSOCPG', '_wpg', 'Comment on' );
+		$pr->registerProperty( '___CS_REPLYTO', '_wpg', 'Reply to' );
+		$pr->registerProperty( '___CS_TITLE', '_txt', 'Comment title of' );
+		if ( $enableVoting === true ) {
+			$pr->registerProperty( '___CS_UPVOTES', '_num', 'Comment up votes' );
+			$pr->registerProperty( '___CS_DOWNVOTES', '_num', 'Comment down votes' );
+			$pr->registerProperty( '___CS_VOTEDIFF', '_num', 'Comment vote diff' );
+		}
+	}
+
+	/**
+	 * Implements Semantic MediaWiki SMWStore::updateDataBefore callback.
+	 * This won't get called unless Semantic MediaWiki is installed.
+	 * If the comment has not been added to the database yet, which is indicated
+	 * by a null associated page id, this function will return early, but it
+	 * will be invoked again by an update job.
+	 *
+	 * @param Store $store semantic data store
+	 * @param SemanticData $semanticData semantic data for page
+	 * @return bool true to continue
+	 * @noinspection PhpUnusedParameterInspection
+	 * @throws ConfigException
+	 */
+	public static function updateData( Store $store, SemanticData $semanticData ) : bool {
+		$subject = $semanticData->getSubject();
+		if ( $subject !== null && $subject->getTitle() !== null &&
+			$subject->getTitle()->getNamespace() === NS_COMMENTSTREAMS ) {
+			if ( defined( 'Title::READ_LATEST' ) ) {
+				$page_id = $subject->getTitle()->getArticleID( Title::READ_LATEST );
+			} else {
+				$page_id = $subject->getTitle()->getArticleID( Title::GAID_FOR_UPDATE );
+			}
+			$wikipage = CommentStreamsUtils::newWikiPageFromId( $page_id );
+			$commentStreamsFactory =
+				MediaWikiServices::getInstance()->getService( 'CommentStreamsFactory' );
+			$comment = $commentStreamsFactory->newFromWikiPage( $wikipage );
+
+			if ( $comment === null ) {
+				return true;
+			}
+
+			$assoc_page_id = $comment->getAssociatedId();
+			if ( $assoc_page_id !== null ) {
+				$assoc_wikipage = CommentStreamsUtils::newWikiPageFromId( $assoc_page_id );
+				if ( $assoc_wikipage !== null ) {
+					$propertyDI = new DIProperty( '___CS_ASSOCPG' );
+					$dataItem =
+						DIWikiPage::newFromTitle( $assoc_wikipage->getTitle() );
+					$semanticData->addPropertyObjectValue( $propertyDI, $dataItem );
+				}
+			}
+
+			$parent_page_id = $comment->getParentId();
+			if ( $parent_page_id !== null ) {
+				$parent_wikipage = CommentStreamsUtils::newWikiPageFromId( $parent_page_id );
+				if ( $parent_wikipage !== null ) {
+					$propertyDI = new DIProperty( '___CS_REPLYTO' );
+					$dataItem =
+						DIWikiPage::newFromTitle( $parent_wikipage->getTitle() );
+					$semanticData->addPropertyObjectValue( $propertyDI, $dataItem );
+				}
+			}
+
+			$commentTitle = $comment->getCommentTitle();
+			if ( $commentTitle !== null ) {
+				$propertyDI = new DIProperty( '___CS_TITLE' );
+				$dataItem = new SMWDIBlob( $comment->getCommentTitle() );
+				$semanticData->addPropertyObjectValue( $propertyDI, $dataItem );
+			}
+
+			$services = MediaWikiServices::getInstance();
+			$commentStreamsStore = $services->getService( 'CommentStreamsStore' );
+			$config = $services->getConfigFactory()->makeConfig( 'CommentStreams' );
+			$enableVoting = (bool)$config->get( 'CommentStreamsEnableVoting' );
+			if ( $enableVoting === true ) {
+				$upvotes = $commentStreamsStore->getNumUpVotes( $comment->getId() );
+				$propertyDI = new DIProperty( '___CS_UPVOTES' );
+				$dataItem = new SMWDINumber( $upvotes );
+				$semanticData->addPropertyObjectValue( $propertyDI, $dataItem );
+				$downvotes = $commentStreamsStore->getNumDownVotes( $comment->getId() );
+				$propertyDI = new DIProperty( '___CS_DOWNVOTES' );
+				$dataItem = new SMWDINumber( $downvotes );
+				$semanticData->addPropertyObjectValue( $propertyDI, $dataItem );
+				$votediff = $upvotes - $downvotes;
+				$propertyDI = new DIProperty( '___CS_VOTEDIFF' );
+				$dataItem = new SMWDINumber( $votediff );
+				$semanticData->addPropertyObjectValue( $propertyDI, $dataItem );
+			}
+		}
+		return true;
+	}
+
+	/**
+	 * Implements SMW::Settings::BeforeInitializationComplete callback.
+	 * See https://github.com/SemanticMediaWiki/SemanticMediaWiki/blob/master/docs/technical/hooks/hook.settings.beforeinitializationcomplete.md
+	 * Defines CommentStreams namespace constants.
+	 *
+	 * @param array &$configuration An array of the configuration options
+	 */
+	public static function onSMWInitialization( array &$configuration ) {
+		$namespaceIndex = $GLOBALS['wgCommentStreamsNamespaceIndex'];
+		$configuration['smwgNamespacesWithSemanticLinks'][$namespaceIndex] = true;
+	}
+}