public function getRequestFields()
{
$fields = $this->_buildRequestFields();
// pass it through validate so that an exception is thrown
$this->_validateFields($fields);
$airpCheckfields = Checksum::sanitizedParam($fields['buyerEmail']) . Checksum::sanitizedParam($fields['buyerFirstName']) . Checksum::sanitizedParam($fields['buyerLastName']) . Checksum::sanitizedParam($fields['buyerAddress']) . Checksum::sanitizedParam($fields['buyerCity']) . Checksum::sanitizedParam($fields['buyerState']) . Checksum::sanitizedParam($fields['buyerCountry']) . Checksum::sanitizedParam($fields['amount']) . Checksum::sanitizedParam($fields['orderid']);
$all = $airpCheckfields;
error_log("Logging stripped params : " . $all);
$airpayConfig = $this->getAirpayConfig();
$privatekey = Checksum::encrypt($airpayConfig['username'] . ":|:" . $airpayConfig['password'], $airpayConfig['secret_key']);
$checksum = Checksum::calculateChecksum($all . date('Y-m-d'), $privatekey);
error_log("Logging stripped params : " . $all);
error_log('Logging key used to produce checksum : ' . $airpayConfig['secret_key']);
error_log('Logging checksum : ' . $checksum);
$this->_checksum = $checksum;
// var_dump($all, $checksum);
#ksort($fields);
// first sort by key and then append checksum in the end
$fields['checksum'] = $checksum;
$fields['privatekey'] = $privatekey;
$fields['mercid'] = $airpayConfig['merchant_id'];
return $fields;
}
