GoIntegro/hateoas

<?php
/**
 * @copyright 2014 Integ S.A.
 * @license http://opensource.org/licenses/MIT The MIT License (MIT)
 * @author Javier Lorenzana <javier.lorenzana@gointegro.com>
 */

namespace GoIntegro\Hateoas\JsonApi\Request;

// HTTP.
use Symfony\Component\HttpFoundation\Request;

/**
 * @see http://jsonapi.org/format/#crud-updating
 */
class UpdateBodyParser implements BodyParserInterface
{
    const ERROR_MISSING_ID = "A data set provided is missing the Id.",
        ERROR_DUPLICATED_ID = "The Id \"%s\" was sent twice.",
        ERROR_MISSING_TRANSLATION = "A translation is missing for the entity with the Id \"%s\".";

    /**
     * @var TranslationsParser
     */
    protected $translationsParser;

    /**
     * @param TranslationsParser $translationsParser
     */
    public function __construct(TranslationsParser $translationsParser)
    {
        $this->translationsParser = $translationsParser;
    }

    /**
     * @param Request $request
     * @param Params $params
     * @param array $body
     * @return array
     */
    public function parse(Request $request, Params $params, array $body)
    {
        $entityData = [];

        if (empty($body[$params->primaryType])) {
            throw new ParseException(BodyParser::ERROR_PRIMARY_TYPE_KEY);
        } elseif (isset($body[$params->primaryType]['id'])) {
            $id = $body[$params->primaryType]['id'];

            if (isset($entityData[$id])) {
                $message = sprintf(static::ERROR_DUPLICATED_ID, $id);
                throw new ParseException($message);
            } else {
                $entityData[$id] = $body[$params->primaryType];
            }
        } else {
            foreach ($body[$params->primaryType] as $datum) {
                if (!isset($datum['id'])) {
                    throw new ParseException(static::ERROR_MISSING_ID);
                } else {
                    $entityData[$datum['id']] = $datum;
                }
            }
        }

        $translations = $this->translationsParser->parse(
            $request, $params, $body
        );

        if (!empty($translations)) {
            foreach ($entityData as $id => &$datum) {
                if (empty($translations[$id])) {
                    $message = sprintf(
                        self::ERROR_MISSING_TRANSLATION, $id
                    );
                    throw new ParseException($message);
                }

                $datum['meta']['translations']
                    = $translations[$id];
            }
        }

        return $entityData;
    }
}