/**
* @param Currency $currency
* @return float
* @throws Exception If error retrieving remote data
*/
public function getRate(Currency $currency)
{
$rates = $this->getRates();
$code = $currency->getCurrencyCode();
if (empty($rates[$code])) {
throw new InvalidArgumentException(sprintf('%s (%s) is not supported by this source', $currency->getDisplayName(), $code));
}
return (double) $rates[$code];
}
/**
* @param Currency $currency
* @return static
*/
public function setCurrency(Currency $currency)
{
$this->currency = $currency->getCurrencyCode();
return $this;
}
/**
* Specify data which should be serialized to JSON
*
* @return mixed data which can be serialized by <b>json_encode</b>,
* @link http://php.net/manual/en/jsonserializable.jsonserialize.php
*/
public function jsonSerialize()
{
return ['amount' => $this->amount, 'currency' => $this->currency->getCurrencyCode()];
}
/**
* @inheritdoc
* @param Currency $object
*/
public function normalize($object, $format = null, array $context = [])
{
return $object->getCurrencyCode();
}
