function ValidateParameters($championName, $file)
{
if (strlen($championName) == 0) {
return new Error(Error::InvalidParameter, "Invalid champion name.");
}
if (ChampionFacade::DoesChampionExists($championName)) {
return new Error(Error::NotUniqueValue, "Provided champion already exists.");
}
if (!isset($file) || $file === null) {
return new Error(Error::InvalidFile, "File has not been uploaded.");
}
$error = ValidateFile($file);
if ($error->code != Error::NoError) {
return $error;
}
return new Error();
}
