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<?php
class Braintree_ClientTokenGateway
{
/**
*
* @var Braintree_Gateway
*/
private $_gateway;
/**
*
* @var Braintree_Configuration
*/
private $_config;
/**
*
* @var Braintree_Http
*/
private $_http;
/**
*
* @param Braintree_Gateway $gateway
*/
public function __construct($gateway)
{
$this->_gateway = $gateway;
$this->_config = $gateway->config;
$this->_config->assertHasAccessTokenOrKeys();
$this->_http = new Braintree_Http($gateway->config);
}
public function generate($params=array())
{
if (!array_key_exists("version", $params)) {
$params["version"] = Braintree_ClientToken::DEFAULT_VERSION;
}
$this->conditionallyVerifyKeys($params);
$generateParams = array("client_token" => $params);
return $this->_doGenerate('/client_token', $generateParams);
}
/**
* sends the generate request to the gateway
*
* @ignore
* @param var $url
* @param array $params
* @return mixed
*/
public function _doGenerate($subPath, $params)
{
$fullPath = $this->_config->merchantPath() . $subPath;
$response = $this->_http->post($fullPath, $params);
return $this->_verifyGatewayResponse($response);
}
/**
*
* @param array $params
* @throws InvalidArgumentException
*/
public function conditionallyVerifyKeys($params)
{
if (array_key_exists("customerId", $params)) {
Braintree_Util::verifyKeys($this->generateWithCustomerIdSignature(), $params);
} else {
Braintree_Util::verifyKeys($this->generateWithoutCustomerIdSignature(), $params);
}
}
/**
*
* @return mixed[]
*/
public function generateWithCustomerIdSignature()
{
return array("version", "customerId", "proxyMerchantId", array("options" => array("makeDefault", "verifyCard", "failOnDuplicatePaymentMethod")), "merchantAccountId");
}
/**
*
* @return string[]
*/
public function generateWithoutCustomerIdSignature()
{
return array("version", "proxyMerchantId", "merchantAccountId");
}
/**
* generic method for validating incoming gateway responses
*
* If the request is successful, returns a client token string.
* Otherwise, throws an InvalidArgumentException with the error
* response from the Gateway or an HTTP status code exception.
*
* @ignore
* @param array $response gateway response values
* @return string client token
* @throws InvalidArgumentException | HTTP status code exception
*/
private function _verifyGatewayResponse($response)
{
if (isset($response['clientToken'])) {
return $response['clientToken']['value'];
} elseif (isset($response['apiErrorResponse'])) {
throw new InvalidArgumentException(
$response['apiErrorResponse']['message']
);
} else {
throw new Braintree_Exception_Unexpected(
"Expected clientToken or apiErrorResponse"
);
}
}
}