/**
* Instantiate the given provider and authentication or authorization protocol.
*
* If user not authenticated yet, the user will be redirected to the authorization Service
* to authorize the application.
*
* @param string $provider Provider (case insensitive)
*
* @throws Exception\Exception
* @throws Exception\RuntimeException
* @throws Exception\UnexpectedValueException
* @throws Exception\InvalidArgumentException
* @throws Exception\AuthorizationDeniedException
* @throws Exception\HttpClientFailureException
* @throws Exception\HttpRequestFailedException
* @throws Exception\InvalidAccessTokenException
* @throws Exception\InvalidApplicationCredentialsException
* @throws Exception\InvalidAuthorizationCodeException
* @throws Exception\InvalidAuthorizationStateException
* @throws Exception\InvalidOauthTokenException
* @throws Exception\InvalidOpenidIdentifierException
*
* @return Adapter\AdapterInterface
*/
public function authenticate($provider)
{
$this->logger->info("Enter Hybridauth::authenticate( {$provider} )");
$adapter = $this->getAdapter($provider);
$adapter->authenticate();
return $adapter;
}
