/**
* Picks the topic with given id.
*
* @param string $id
*
* @return array A topic as an array with the following keys:
* id, title, description and average.
*
* @throws NonExistentIdApiException
*/
public function pick($id)
{
try {
return $this->pickTopicInternalWorker->pick($id);
} catch (NonExistentIdInternalException $e) {
throw new NonExistentIdApiException();
}
}
/**
* Validates given topics.
*
* @throws NoTopicsInternalException
* @throws NonExistentTopicInternalException
*/
public function validate($topics)
{
if (count($topics) == 0) {
throw new NoTopicsInternalException();
}
foreach ($topics as $topic) {
try {
$this->pickTopicInternalWorker->pick($topic);
} catch (NonExistentIdInternalException $e) {
throw new NonExistentTopicInternalException();
}
}
}