static function enroll($is_manager)
{
global $wpdb, $user_ID, $user_email;
$_course = new NamasteLMSCourseModel();
$message = '';
// enroll in course
$course = $_course->select($_POST['course_id']);
// course fee?
$fee = get_post_meta($course->ID, 'namaste_fee', true);
// When fee is paid, enrollment is automatic so this is just fine here
if (!empty($fee)) {
$fee = apply_filters('namaste-coupon-applied', $fee);
}
// coupon code from other plugin?
if ($fee > 0 and !$is_manager) {
wp_die("You can't enroll yourself in a course when there is a fee");
}
$enroll_mode = get_post_meta($course->ID, 'namaste_enroll_mode', true);
// if already enrolled, just skip this altogether
if (!NamasteLMSStudentModel::is_enrolled($user_ID, $course->ID)) {
// depending on mode, status will be either 'pending' or 'enrolled'
$status = $enroll_mode == 'free' ? 'enrolled' : 'pending';
$_course->enroll($user_ID, $course->ID, $status);
if ($enroll_mode == 'free') {
$message = sprintf(__('You enrolled in "%s"', 'namaste'), $course->post_title);
} else {
$message = __('Thank you for your interest in enrolling this course. A manager will review your application.', 'namaste');
}
} else {
$message = __('You have already enrolled in this course', 'namaste');
}
return $message;
}
static function pay($currency)
{
global $wpdb, $user_ID, $user_email;
$_course = new NamasteLMSCourseModel();
$token = $_POST['stripeToken'];
$course = get_post($_POST['course_id']);
$fee = get_post_meta($course->ID, 'namaste_fee', true);
$fee = apply_filters('namaste-coupon-applied', $fee);
// coupon code from other plugin?
try {
$customer = Stripe_Customer::create(array('email' => $user_email, 'card' => $token));
$charge = Stripe_Charge::create(array('customer' => $customer->id, 'amount' => $fee * 100, 'currency' => $currency));
} catch (Exception $e) {
wp_die($e->getMessage());
}
// !!!!in the next version avoid this copy-paste
// almost the same code is in models/payment.php for the paypal payments
$wpdb->query($wpdb->prepare("INSERT INTO " . NAMASTE_PAYMENTS . " SET \n\t\t\t\t\t\tcourse_id=%d, user_id=%s, date=CURDATE(), amount=%s, status='completed', paycode=%s, paytype='stripe'", $_POST['course_id'], $user_ID, $fee, $token));
do_action('namaste-paid', $user_ID, $fee, "course", $_POST['course_id']);
// enroll accordingly to course settings - this will be placed in a method once we
// have more payment options
$enroll_mode = get_post_meta($course->ID, 'namaste_enroll_mode', true);
if (!NamasteLMSStudentModel::is_enrolled($user_ID, $course->ID)) {
$status = $enroll_mode == 'free' ? 'enrolled' : 'pending';
$_course->enroll($user_ID, $course->ID, $status);
}
}
private static function enroll($userId, $courseId)
{
$_course = new NamasteLMSCourseModel();
// enroll in course
$course = $_course->select($courseId);
$enroll_mode = get_post_meta($course->ID, 'namaste_enroll_mode', true);
// if already enrolled, just skip this altogether
$_course->enroll($userId, $course->ID, 'enrolled');
}
static function paypal_ipn($wp)
{
global $wpdb;
echo "<!-- NAMASTECOMMENT paypal IPN -->";
$paypal_email = get_option("namaste_paypal_id");
// read the post from PayPal system and add 'cmd'
$req = 'cmd=_notify-validate';
foreach ($_POST as $key => $value) {
$value = urlencode(stripslashes($value));
$req .= "&{$key}={$value}";
}
$paypal_host = 'www.paypal.com';
$paypal_sandbox = get_option('namaste_paypal_sandbox');
if ($paypal_sandbox == '1') {
$paypal_host = 'www.sandbox.paypal.com';
}
// post back to PayPal system to validate
$header = "";
$header .= "POST /cgi-bin/webscr HTTP/1.0\r\n";
$header .= "Content-Type: application/x-www-form-urlencoded\r\n";
$header .= "Host: " . $paypal_host . "\r\n";
$header .= "Content-Length: " . strlen($req) . "\r\n\r\n";
$fp = fsockopen($paypal_host, 80, $errno, $errstr, 30);
if ($fp) {
fputs($fp, $header . $req);
$pp_response = '';
while (!feof($fp)) {
$res = fgets($fp, 1024);
$pp_response .= $res;
if (strstr($res, "VERIFIED") or $paypal_sandbox == '1') {
// check the payment_status is Completed
// check that txn_id has not been previously processed
// check that receiver_email is your Primary PayPal email
// process payment
$payment_completed = false;
$txn_id_okay = false;
$receiver_okay = false;
$payment_currency_okay = false;
$payment_amount_okay = false;
if ($_POST['payment_status'] == "Completed") {
$payment_completed = true;
} else {
self::log_and_exit("Payment status: {$_POST['payment_status']}");
}
// check txn_id
$txn_exists = $wpdb->get_var($wpdb->prepare("SELECT paycode FROM " . NAMASTE_PAYMENTS . "\n\t\t\t\t\t WHERE paytype='paypal' AND paycode=%s", $_POST['txn_id']));
if (empty($txn_id)) {
$txn_id_okay = true;
} else {
self::log_and_exit("TXN ID exists: {$txn_id}");
}
// check receiver email
if ($_POST['business'] == $paypal_email) {
$receiver_okay = true;
} else {
self::log_and_exit("Business email is wrong: {$_POST['business']}");
}
// check payment currency
if ($_POST['mc_currency'] == get_option("namaste_currency")) {
$payment_currency_okay = true;
} else {
self::log_and_exit("Currency is {$_POST['mc_currency']}");
}
// check amount
$fee = get_post_meta($_GET['course_id'], 'namaste_fee', true);
$fee = apply_filters('namaste-coupon-applied', $fee);
// coupon code from other plugin?
if ($_POST['mc_gross'] >= $fee) {
$payment_amount_okay = true;
} else {
self::log_and_exit("Wrong amount: {$_POST['mc_gross']} when price is {$fee}");
}
// everything OK, insert payment and enroll
if ($payment_completed and $txn_id_okay and $receiver_okay and $payment_currency_okay and $payment_amount_okay) {
$wpdb->query($wpdb->prepare("INSERT INTO " . NAMASTE_PAYMENTS . " SET \n\t\t\t\t\t\t\tcourse_id=%d, user_id=%s, date=CURDATE(), amount=%s, status='completed', paycode=%s, paytype='paypal'", $_GET['course_id'], $_GET['user_id'], $fee, $_POST['txn_id']));
do_action('namaste-paid', $_GET['user_id'], $fee, "course", $_GET['course_id']);
// enroll accordingly to course settings - this will be placed in a method once we
// have more payment options
$enroll_mode = get_post_meta($_GET['course_id'], 'namaste_enroll_mode', true);
if (!NamasteLMSStudentModel::is_enrolled($_GET['user_id'], $_GET['course_id'])) {
$_course = new NamasteLMSCourseModel();
$status = $enroll_mode == 'free' ? 'enrolled' : 'pending';
$_course->enroll($_GET['user_id'], $_GET['course_id'], $status);
}
exit;
}
}
}
fclose($fp);
self::log_and_exit("Paypal result is not VERIFIED: {$pp_response}");
} else {
self::log_and_exit("Can't connect to Paypal");
}
exit;
}
