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<?php
/* --------------------------------------------------------------
   ZoneJsonSerializer.inc.php 2015-07-08 gm
   Gambio GmbH
   http://www.gambio.de
   Copyright (c) 2015 Gambio GmbH
   Released under the GNU General Public License (Version 2)
   [http://www.gnu.org/licenses/gpl-2.0.html]
   --------------------------------------------------------------
*/

MainFactory::load_class('AbstractJsonSerializer');

/**
 * Class ZoneJsonSerializer
 *
 * This class will serialize and deserialize a zone entity. It can be used into many
 * places where PHP interacts with external requests such as AJAX or API communication.
 *
 * @category   System
 * @package    Extensions
 * @subpackage Serializers
 */
class ZoneJsonSerializer extends AbstractJsonSerializer
{
    /**
     * Serialize zone object to json string.
     *
     * @param CustomerCountryZoneInterface $object Contains the zone data.
     * @param bool                         $encode (optional) Whether to json_encode the result of the method (default
     *                                             true). Sometimes it might be required to encode an array of multiple
     *                                             zone records together and not one by one.
     *
     * @return string|array Returns the json encoded zone (string) or an array that can be easily encoded into a
     *                      JSON string.
     * @throws InvalidArgumentException If the provided object type is invalid.
     */
    public function serialize($object, $encode = true)
    {
        if(!is_a($object, 'CustomerCountryZoneInterface'))
        {
            throw new InvalidArgumentException('Invalid argument provided, CustomerCountryZoneInterface object required: '
                                               . get_class($object));
        }

        $zone = array(
                'id'   => (int)(string)$object->getId(),
                'name' => (string)$object->getName(),
                'iso'  => (string)$object->getCode()
        );

        return ($encode) ? $this->jsonEncode($zone) : $zone;
    }


    /**
     * Deserialize zone JSON string.
     *
     * NOTICE #1: The CountryService does not support the addition of new zones so the
     * CustomerCountryZone object does not have any setters, rather only getters. So the
     * $baseObject parameter is not used at all.
     *
     * NOTICE #2: The provided JSON string must contain all the properties of the zone
     * otherwise the object will not be deserialized.
     *
     * @param string $string     JSON string that contains the data of the country.
     * @param object $baseObject (optional) It is not used within the countries context.
     *
     * @return CustomerCountryZoneInterface Returns the deserialized CustomerCountry object.
     * @throws InvalidArgumentException If the argument is not a string or is empty.
     */
    public function deserialize($string, $baseObject = null)
    {
        if(!is_string($string) || empty($string))
        {
            throw new InvalidArgumentException('Invalid argument provided for deserialization: ' . gettype($string));
        }

        $json = json_decode($string);

        if($json === null && json_last_error() > 0)
        {
            throw new InvalidArgumentException('Provided JSON string is malformed and could not be parsed: ' . $string);
        }

        $id   = new IdType((int)$json->id);
        $name = MainFactory::create('CustomerCountryZoneName', (string)$json->name);
        $code = MainFactory::create('CustomerCountryZoneIsoCode', (string)$json->iso);

        $country = MainFactory::create('CustomerCountryZone', $id, $name, $code);

        return $country;
    }
}