/**
* Get common user uri associated to Lti user id
*
* @param $id string Identifier of LTI user
* @param $key string Oauth LTI consumer key
* @return array|null
* @throws \common_Exception
* @throws \tao_models_classes_oauth_Exception
*/
public function getUserId($id, $key)
{
$class = new \core_kernel_classes_Class(CLASS_LTI_USER);
$dataStore = new \tao_models_classes_oauth_DataStore();
try {
/** @var \core_kernel_classes_Resource $consumerResource */
$consumerResource = $dataStore->findOauthConsumerResource($key);
} catch (\tao_models_classes_oauth_Exception $e) {
throw new \common_exception_NotFound($e->getMessage());
}
$instances = $class->searchInstances(array(PROPERTY_USER_LTIKEY => $id, PROPERTY_USER_LTICONSUMER => $consumerResource), array('like' => false));
if (count($instances) > 1) {
throw new \common_Exception('Multiple user accounts found for user key: ' . $id);
}
/** @var \core_kernel_classes_Resource $ltiUser */
$ltiUser = count($instances) == 1 ? current($instances) : null;
if (!$ltiUser) {
return null;
}
return array('id' => $ltiUser->getUri());
}
/**
* Returns the LTI Consumer resource associated to this lti session
*
* @access public
* @author Joel Bout, <*****@*****.**>
* @return core_kernel_classes_Resource resource of LtiConsumer
* @throws tao_models_classes_oauth_Exception thrown if no Consumer found for key
*/
public function getLtiConsumerResource($launchData)
{
$dataStore = new tao_models_classes_oauth_DataStore();
return $dataStore->findOauthConsumerResource($launchData->getOauthKey());
}
