public function verify($userOtp)
{
if (!is_string($userOtp)) {
throw InvalidArgumentException::invalidType('string', 'userOtp', $userOtp);
}
if (strtoupper($userOtp) !== strtoupper($this->otp)) {
return OtpVerification::noMatch();
}
$expiryTime = clone $this->issuedAt;
$expiryTime->add($this->expiryInterval);
if ($expiryTime <= DateTime::now()) {
return OtpVerification::matchExpired();
}
return OtpVerification::foundMatch($this->phoneNumber);
}
