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<?php
namespace Knox\Pesapal;
use Knox\Pesapal\Contracts\PesapalContract;
use Knox\Pesapal\Exceptions\PesapalException;
use Knox\Pesapal\OAuth\OAuthConsumer;
use Knox\Pesapal\OAuth\OAuthRequest;
use Knox\Pesapal\OAuth\OAuthSignatureMethod_HMAC_SHA1;
use Route;
/**
* Class Pesapal
*
* @package Knox\Pesapal
*/
class Pesapal implements PesapalContract
{
/**
* Processes the payment to pesapal
*
* @return pesapal_tracking_id
*/
private $callback_route = '';
/**
* @param $params
*
* @return string
* @throws \Knox\Pesapal\Exceptions\PesapalException
*/
public function makePayment($params)
{
$defaults = [ // the defaults will be overidden if set in $params
'amount' => '1',
'description' => 'sample description',
'type' => 'MERCHANT',
'reference' => $this->random_reference(),
'first_name' => 'John',
'last_name' => 'Doe',
'email' => 'johndoe@example.com',
'currency' => 'KES',
'phonenumber' => '254712345678',
'width' => '100%',
'height' => '100%',
];
if (!array_key_exists('currency', $params)) {
if (config('pesapal.currency') != null) {
$params['currency'] = config('pesapal.currency');
}
}
$params = array_merge($defaults, $params);
if (!config('pesapal.callback_route')) {
throw new PesapalException("callback route not provided");
} else {
if (!Route::has(config('pesapal.callback_route'))) {
throw new PesapalException("callback route does not exist");
}
}
$token = NULL;
$consumer_key = config('pesapal.consumer_key');
$consumer_secret = config('pesapal.consumer_secret');
$signature_method = new OAuthSignatureMethod_HMAC_SHA1();
$iframelink = $this->api_link('PostPesapalDirectOrderV4');
$callback_url = url('/') . '/pesapal-callback'; //redirect url, the page that will handle the response from pesapal.
$post_xml = "<?xml version=\"1.0\" encoding=\"utf-8\"?>
<PesapalDirectOrderInfo
xmlns:xsi=\"http://www.w3.org/2001/XMLSchemainstance\"
xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\"
Amount=\"" . $params['amount'] . "\"
Description=\"" . $params['description'] . "\"
Type=\"" . $params['type'] . "\"
Reference=\"" . $params['reference'] . "\"
FirstName=\"" . $params['first_name'] . "\"
LastName=\"" . $params['last_name'] . "\"
Currency=\"" . $params['currency'] . "\"
Email=\"" . $params['email'] . "\"
PhoneNumber=\"" . $params['phonenumber'] . "\"
xmlns=\"http://www.pesapal.com\" />";
$post_xml = htmlentities($post_xml);
$consumer = new OAuthConsumer($consumer_key, $consumer_secret);
$iframe_src = OAuthRequest::from_consumer_and_token($consumer, $token, "GET", $iframelink, $params);
$iframe_src->set_parameter("oauth_callback", $callback_url);
$iframe_src->set_parameter("pesapal_request_data", $post_xml);
$iframe_src->sign_request($signature_method, $consumer, $token);
return '<iframe src="' . $iframe_src . '" width="' . $params['width'] . '" height="' . $params['height'] . '" scrolling="auto" frameBorder="0"> <p>Unable to load the payment page</p> </iframe>';
}
/**
* @param $pesapalNotification
* @param $pesapal_merchant_reference
* @param $pesapalTrackingId
*/
function redirectToIPN($pesapalNotification, $pesapal_merchant_reference, $pesapalTrackingId)
{
$consumer_key = config('pesapal.consumer_key');
$consumer_secret = config('pesapal.consumer_secret');
$statusrequestAPI = $this->api_link('querypaymentdetails');
if ($pesapalNotification == "CHANGE" && $pesapalTrackingId != '') {
$token = $params = NULL;
$consumer = new OAuthConsumer($consumer_key, $consumer_secret);
$signature_method = new OAuthSignatureMethod_HMAC_SHA1();
//get transaction status
$request_status = OAuthRequest::from_consumer_and_token($consumer, $token, "GET", $statusrequestAPI,
$params);
$request_status->set_parameter("pesapal_merchant_reference", $pesapal_merchant_reference);
$request_status->set_parameter("pesapal_transaction_tracking_id", $pesapalTrackingId);
$request_status->sign_request($signature_method, $consumer, $token);
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $request_status);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_HEADER, 1);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
if (defined('CURL_PROXY_REQUIRED')) {
if (CURL_PROXY_REQUIRED == 'True') {
$proxy_tunnel_flag = (defined('CURL_PROXY_TUNNEL_FLAG') && strtoupper(CURL_PROXY_TUNNEL_FLAG) == 'FALSE') ? false : true;
curl_setopt($ch, CURLOPT_HTTPPROXYTUNNEL, $proxy_tunnel_flag);
curl_setopt($ch, CURLOPT_PROXYTYPE, CURLPROXY_HTTP);
curl_setopt($ch, CURLOPT_PROXY, CURL_PROXY_SERVER_DETAILS);
}
}
$response = curl_exec($ch);
$header_size = curl_getinfo($ch, CURLINFO_HEADER_SIZE);
$raw_header = substr($response, 0, $header_size - 4);
$headerArray = explode("\r\n\r\n", $raw_header);
$header = $headerArray[count($headerArray) - 1];
//transaction status
$elements = preg_split("/=/", substr($response, $header_size));
//$status = $elements[1];
$components = explode(',', $elements[1]);
$transaction_id = $components[0];
$payment_method = $components[1];
$merchant_reference = $components[3];
$status = $components[2];
curl_close($ch);
if ($status == 'PENDING') {
sleep(60);
redirectToIPN($pesapalNotification, $pesapal_merchant_reference, $pesapalTrackingId);
}
//UPDATE YOUR DB TABLE WITH NEW STATUS FOR TRANSACTION WITH pesapal_transaction_tracking_id $pesapalTrackingId
$separator = explode('@', config('pesapal.ipn'));
$controller = $separator[0];
$method = $separator[1];
$class = '\App\Http\Controllers\\' . $separator[0];
$payment = new $class();
$payment->$method($transaction_id, $status, $payment_method, $merchant_reference);
if ($status != "PENDING") {
$resp = "pesapal_notification_type=$pesapalNotification&pesapal_transaction_tracking_id=$pesapalTrackingId&pesapal_merchant_reference=$pesapal_merchant_reference";
ob_start();
echo $resp;
ob_flush();
exit;
}
}
}
/**
* @param $pesapal_merchant_reference
*
* @return mixed
*/
function getMerchantStatus($pesapal_merchant_reference)
{
$consumer_key = config('pesapal.consumer_key');
$consumer_secret = config('pesapal.consumer_secret');
$statusrequestAPI = $this->api_link('querypaymentstatusbymerchantref');
$token = $params = NULL;
$consumer = new OAuthConsumer($consumer_key, $consumer_secret);
$signature_method = new OAuthSignatureMethod_HMAC_SHA1();
//get transaction status
$request_status = OAuthRequest::from_consumer_and_token($consumer, $token, "GET", $statusrequestAPI, $params);
$request_status->set_parameter("pesapal_merchant_reference", $pesapal_merchant_reference);
$request_status->sign_request($signature_method, $consumer, $token);
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $request_status);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_HEADER, 1);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
if (defined('CURL_PROXY_REQUIRED')) {
if (CURL_PROXY_REQUIRED == 'True') {
$proxy_tunnel_flag = (defined('CURL_PROXY_TUNNEL_FLAG') && strtoupper(CURL_PROXY_TUNNEL_FLAG) == 'FALSE') ? false : true;
curl_setopt($ch, CURLOPT_HTTPPROXYTUNNEL, $proxy_tunnel_flag);
curl_setopt($ch, CURLOPT_PROXYTYPE, CURLPROXY_HTTP);
curl_setopt($ch, CURLOPT_PROXY, CURL_PROXY_SERVER_DETAILS);
}
}
$response = curl_exec($ch);
$header_size = curl_getinfo($ch, CURLINFO_HEADER_SIZE);
$raw_header = substr($response, 0, $header_size - 4);
$headerArray = explode("\r\n\r\n", $raw_header);
$header = $headerArray[count($headerArray) - 1];
//transaction status
$elements = preg_split("/=/", substr($response, $header_size));
$status = $elements[1];
curl_close($ch);
return $status;
}
/**
* @param string $prefix
* @param int $length
*
* @return string
*/
public function random_reference($prefix = 'PESAPAL', $length = 15)
{
$keyspace = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ';
$str = '';
$max = mb_strlen($keyspace, '8bit') - 1;
for ($i = 0; $i < $length; ++$i) {
$str .= $keyspace[random_int(0, $max)];
}
return $prefix . $str;
}
/**
* Get API path
* @param null $path
* @return string
*/
public function api_link($path = null)
{
$live = 'https://www.pesapal.com/api/';
$demo = 'https://demo.pesapal.com/api/';
return (config('pesapal.live') ? $live : $demo) . $path;
}
}