/**
* Merge the given config on to "configurable" (either a GeneratorInterface
* or a RendererInterface) instance's default config and validate it
* according to the "configurable" instance's JSON schema.
*
* @param ConfigurableInterface $configurable
* @param array $config
*
* @return array
*/
private function mergeAndValidateConfig(RegistrableInterface $configurable, array $config)
{
$config = array_replace_recursive($configurable->getDefaultConfig(), $config);
// not sure if there is a better way to convert the schema array to objects
// as expected by the validator.
$validationConfig = json_decode(json_encode($config));
$schema = $configurable->getSchema();
if (!is_array($schema)) {
throw new \InvalidArgumentException(sprintf('Configurable class "%s" must return the JSON schema as an array', get_class($configurable)));
}
$schema['properties'][$this->serviceType] = array('type' => 'string');
$schema['properties']['_name'] = array('type' => 'string');
// convert the schema to a \stdClass
$schema = json_decode(json_encode($schema));
// json_encode encodes an array instead of an object if the schema
// is empty. JSON schema requires an object.
if (empty($schema)) {
$schema = new \stdClass();
}
$this->validator->check($validationConfig, $schema);
if (!$this->validator->isValid()) {
$errorString = array();
foreach ($this->validator->getErrors() as $error) {
$errorString[] = sprintf('[%s] %s', $error['property'], $error['message']);
}
throw new \InvalidArgumentException(sprintf('Invalid JSON: %s%s', PHP_EOL . PHP_EOL . PHP_EOL, implode(PHP_EOL, $errorString)));
}
return $config;
}
