addwiki / wikibase-api

src/Api/Service/ReferenceSetter.php

<?php

namespace Wikibase\Api\Service;

use Mediawiki\DataModel\EditInfo;
use Serializers\Serializer;
use UnexpectedValueException;
use Wikibase\Api\WikibaseApi;
use Wikibase\DataModel\Reference;
use Wikibase\DataModel\Statement\Statement;
use Wikibase\DataModel\Statement\StatementGuid;

/**
 * @access private
 *
 * @author Addshore
 */
class ReferenceSetter {

	/**
	 * @var WikibaseApi
	 */
	private $api;

	/**
	 * @var Serializer
	 */
	private $referenceSerializer;

	/**
	 * @param WikibaseApi $api
	 * @param Serializer $referenceSerializer
	 */
	public function __construct( WikibaseApi $api, Serializer $referenceSerializer ) {
		$this->api = $api;
		$this->referenceSerializer = $referenceSerializer;
	}

	/**
	 * @since 0.2
	 *
	 * @param Reference $reference new reference value
	 * @param Statement|StatementGuid|string $statement Statement object or GUID which has the reference
	 * @param Reference|string $targetReference target (old) reference of hash
	 * @param EditInfo|null $editInfo
	 *
	 * @return bool
	 * @throws UnexpectedValueException
	 */
	public function set( Reference $reference, $statement, $targetReference = null, EditInfo $editInfo = null ) {
		if( is_string( $statement ) ) {
			$guid = $statement;
		} else if ( $statement instanceof StatementGuid ) {
			$guid = $statement->getSerialization();

The method Wikibase\DataModel\Statement\StatementGuid::getSerialization() has been deprecated with message: The value returned by this method might differ in case from the original, unparsed statement GUID
(the entity ID part might have been lowercase originally, but is always normalized in the return value here),
which means that the value should not be compared to other statement GUID serializations,
e.g. to look up a statement in a StatementList.

		} else if ( $statement instanceof Statement ) {
			$guid = $statement->getGuid();
		} else {
			throw new UnexpectedValueException( 'Could not get statement guid from $statement' );
		}
		if( !is_string( $guid ) ) {
			throw new UnexpectedValueException( 'Unexpected statement guid got from $statement' );
		}

		$referenceSerialization = $this->referenceSerializer->serialize( $reference );

		$params = array(
			'statement' => $guid,
			'snaks' => json_encode( $referenceSerialization['snaks'] ),
			'snaks-order' => json_encode( $referenceSerialization['snaks-order'] ),
		);

		if( !is_null( $targetReference ) ) {
			if( $targetReference instanceof Reference ) {
				$targetReference = $reference->getHash();
			}
			if( !is_string( $targetReference ) ) {
				throw new UnexpectedValueException( 'Could not get reference hash from $targetReference' );
			}
			$params['reference'] = $targetReference;
		}

		$this->api->postRequest( 'wbsetreference', $params, $editInfo );
		return true;
	}

}