/**
* @inheritdoc
* @return ResponsePayload response payload instance
* @throws InvalidReceiptException when unknown status code found
* @throws InvalidArgumentException when not iOS7 receipt string
*/
public static function initializeByString($string)
{
$Object = json_decode($string);
if (isset($Object->receipt->in_app)) {
$result = Status::checkStatus($Object->status);
if ($result === true) {
$Response = new self();
$Response->AppReceipt = AppReceipt::initializeByObject($Object->receipt);
$Response->environment = (string) $Object->environment;
$Response->status = (int) $Object->status;
return $Response;
} else {
$Exception = new $result($string, $Object->status);
throw $Exception;
}
} else {
throw new InvalidArgumentException('not found in_app receipt field in iOS7 receipt');
}
}
/**
* Define exception class by receipt status code
* @param int $status receipt status code
* @return bool|string exception class name for inalid status codes or TRUE for correct code
*/
public static function checkStatus($status)
{
switch ($status) {
case self::STATUS_UNMATCHED_SHARED_SECRET:
return UnmatchedSharedSecretException::getClass();
default:
return parent::checkStatus($status);
}
}