/**
* This method processes transaction data that comes from PayPal instant notifier.
*
* @param string $context This string gives information about that where it has been executed the trigger.
* @param Joomla\Registry\Registry $params The parameters of the component
*
* @throws \InvalidArgumentException
* @throws \OutOfBoundsException
* @throws \RuntimeException
* @throws \UnexpectedValueException
*
* @return null|stdClass
*/
public function onPaymentNotify($context, $params)
{
if (strcmp('com_crowdfunding.notify.' . $this->serviceAlias, $context) !== 0) {
return null;
}
if ($this->app->isAdmin()) {
return null;
}
$doc = JFactory::getDocument();
/** @var $doc JDocumentHtml */
// Check document type
$docType = $doc->getType();
if (strcmp('raw', $docType) !== 0) {
return null;
}
// Validate request method
$requestMethod = $this->app->input->getMethod();
if (strcmp('POST', $requestMethod) !== 0) {
$this->log->add(JText::_($this->textPrefix . '_ERROR_INVALID_REQUEST_METHOD'), $this->debugType, JText::sprintf($this->textPrefix . '_ERROR_INVALID_TRANSACTION_REQUEST_METHOD', $requestMethod));
return null;
}
// DEBUG DATA
JDEBUG ? $this->log->add(JText::_($this->textPrefix . '_DEBUG_RESPONSE'), $this->debugType, $_POST) : null;
// Decode custom data
$custom = ArrayHelper::getValue($_POST, 'custom');
$custom = json_decode(base64_decode($custom), true);
// DEBUG DATA
JDEBUG ? $this->log->add(JText::_($this->textPrefix . '_DEBUG_CUSTOM'), $this->debugType, $custom) : null;
// Verify gateway. Is it PayPal?
$gateway = ArrayHelper::getValue($custom, 'gateway');
if (!$this->isValidPaymentGateway($gateway)) {
$this->log->add(JText::_($this->textPrefix . '_ERROR_INVALID_PAYMENT_GATEWAY'), $this->debugType, array('custom' => $custom, '_POST' => $_POST));
return null;
}
// Get PayPal URL
if ($this->params->get('paypal_sandbox', 1)) {
$url = trim($this->params->get('paypal_sandbox_url', 'https://www.sandbox.paypal.com/cgi-bin/webscr'));
} else {
$url = trim($this->params->get('paypal_url', 'https://www.paypal.com/cgi-bin/webscr'));
}
$paypalIpn = new Prism\Payment\PayPal\Ipn($url, $_POST);
$loadCertificate = (bool) $this->params->get('paypal_load_certificate', 0);
$paypalIpn->verify($loadCertificate);
// DEBUG DATA
JDEBUG ? $this->log->add(JText::_($this->textPrefix . '_DEBUG_VERIFY_OBJECT'), $this->debugType, $paypalIpn) : null;
// Prepare the array that have to be returned by this method.
$paymentResult = new stdClass();
$paymentResult->project = null;
$paymentResult->reward = null;
$paymentResult->transaction = null;
$paymentResult->paymentSession = null;
$paymentResult->serviceProvider = $this->serviceProvider;
$paymentResult->serviceAlias = $this->serviceAlias;
if ($paypalIpn->isVerified()) {
$containerHelper = new Crowdfunding\Container\Helper();
$currency = $containerHelper->fetchCurrency($this->container, $params);
// Get payment session data
$paymentSessionId = ArrayHelper::getValue($custom, 'payment_session_id', 0, 'int');
$paymentSessionRemote = $this->getPaymentSession(array('id' => $paymentSessionId));
// Check for valid payment session.
if (!$paymentSessionRemote->getId()) {
$this->log->add(JText::_($this->textPrefix . '_ERROR_PAYMENT_SESSION'), $this->errorType, $paymentSessionRemote->getProperties());
return null;
}
// DEBUG DATA
JDEBUG ? $this->log->add(JText::_($this->textPrefix . '_DEBUG_PAYMENT_SESSION'), $this->debugType, $paymentSessionRemote->getProperties()) : null;
// Validate transaction data
$validData = $this->validateData($_POST, $currency->getCode(), $paymentSessionRemote);
if ($validData === null) {
return null;
}
// DEBUG DATA
JDEBUG ? $this->log->add(JText::_($this->textPrefix . '_DEBUG_VALID_DATA'), $this->debugType, $validData) : null;
// Set the receiver ID.
$project = $containerHelper->fetchProject($this->container, $validData['project_id']);
$validData['receiver_id'] = $project->getUserId();
// Get reward object.
$reward = null;
if ($validData['reward_id']) {
$reward = $containerHelper->fetchReward($this->container, $validData['reward_id'], $project->getId());
}
// Save transaction data.
// If it is not completed, return empty results.
// If it is complete, continue with process transaction data
$transaction = $this->storeTransaction($validData);
if ($transaction === null) {
return null;
}
// Generate object of data, based on the transaction properties.
$paymentResult->transaction = $transaction;
// Generate object of data based on the project properties.
$paymentResult->project = $project;
// Generate object of data based on the reward properties.
if ($reward !== null and $reward instanceof Crowdfunding\Reward) {
$paymentResult->reward = $reward;
}
// Generate data object, based on the payment session properties.
$paymentResult->paymentSession = $paymentSessionRemote;
// Removing intention.
$this->removeIntention($paymentSessionRemote, $transaction);
} else {
// Log error
$this->log->add(JText::_($this->textPrefix . '_ERROR_INVALID_TRANSACTION_DATA'), $this->debugType, array('ERROR MESSAGE' => $paypalIpn->getError(), 'paypalVerify' => $paypalIpn, '_POST' => $_POST));
}
return $paymentResult;
}