wikimedia/mediawiki-extensions-Wikibase

<?php

namespace Wikibase\Client\Serializer;

use Serializers\Serializer;
use Wikibase\DataModel\Entity\EntityIdParser;
use Wikibase\DataModel\Services\Lookup\PropertyDataTypeLookup;
use Wikibase\Lib\Serialization\CallbackFactory;
use Wikibase\Lib\Serialization\SerializationModifier;

/**
 * @license GPL-2.0-or-later
 * @author Addshore
 */
abstract class ClientSerializer implements Serializer {

    /**
     * @var PropertyDataTypeLookup
     */
    private $dataTypeLookup;

    /**
     * @var SerializationModifier
     */
    private $modifier;

    /**
     * @var CallbackFactory
     */
    private $callbackFactory;

    /**
     * @var EntityIdParser
     */
    private $entityIdParser;

    public function __construct( PropertyDataTypeLookup $dataTypeLookup, EntityIdParser $entityIdParser ) {
        $this->dataTypeLookup = $dataTypeLookup;
        $this->entityIdParser = $entityIdParser;

        $this->modifier = new SerializationModifier();
        $this->callbackFactory = new CallbackFactory();
    }

    /**
     * @param array $serialization
     *
     * @return array
     */
    protected function omitEmptyArrays( array $serialization ) {
        return array_filter(
            $serialization,
            function( $value ) {
                return $value !== [];
            }
        );
    }

    /**
     * @param array $serialization
     * @param string $pathPrefix
     *
     * @todo FIXME duplicated / similar code in Repo ResultBuilder
     *
     * @return array
     */
    protected function injectSerializationWithDataTypes( array $serialization, $pathPrefix ) {
        $callback = $this->callbackFactory->getCallbackToAddDataTypeToSnak( $this->dataTypeLookup, $this->entityIdParser );
        $groupedCallback = $this->callbackFactory->getCallbackToAddDataTypeToSnaksGroupedByProperty(
            $this->dataTypeLookup,
            $this->entityIdParser
        );

        return $this->modifier->modifyUsingCallbacks(
            $serialization,
            [
                "$pathPrefix*/*/mainsnak" => $callback,
                "$pathPrefix*/*/qualifiers" => $groupedCallback,
                "$pathPrefix*/*/references/*/snaks" => $groupedCallback,
            ]
        );
    }

}