function gdlr_lms_print_course_button($course_options, $options = array('buy', 'book', 'learn'))
{
global $gdlr_lms_option, $current_user;
echo '<div class="gdlr-course-button" >';
// for non member course
if (!empty($course_options['allow-non-member']) && $course_options['allow-non-member'] == 'enable' && (empty($course_options['online-course']) || $course_options['online-course'] == 'enable') && (in_array('buy', $options) || in_array('book', $options))) {
$options = array('start');
// if not logging in
} else {
if (!is_user_logged_in() && !in_array('finish-quiz', $options)) {
$lightbox_open = 'login-form';
gdlr_lms_sign_in_lightbox_form();
} else {
// when purchase button is available
if (in_array('buy', $options) || in_array('book', $options)) {
// prerequisite course
$prerequisite = false;
if (!empty($course_options['prerequisite-course']) && $course_options['prerequisite-course'] != 'none') {
$prerequisite = true;
$find_row = gdlr_lms_get_payment_row($course_options['prerequisite-course'], $current_user->ID);
$payment_status = empty($find_row) ? false : $find_row->payment_status;
$p_course_options = gdlr_lms_get_course_options($course_options['prerequisite-course']);
// if prerequisite is offline course
if (!empty($p_course_options['online-course']) && $p_course_options['online-course'] == 'disable') {
if ($payment_status == 'paid' || $payment_status == 'reserved') {
$prerequisite = false;
}
// for online course
} else {
if ($payment_status == 'paid' || $payment_status == 'reserved') {
// if prerequisite course has quiz
if (!empty($p_course_options['quiz']) && $p_course_options['quiz'] != 'none') {
$quiz_row = gdlr_lms_get_quiz_row($p_course_options['quiz'], $course_options['prerequisite-course'], $current_user->ID, 'quiz_status');
$quiz_status = empty($quiz_row) ? false : $quiz_row->quiz_status;
if ($quiz_status == 'complete' || $quiz_status == 'submitted') {
$prerequisite = false;
}
} else {
$p_section = empty($find_row) ? -1 : intval($find_row->attendance_section);
$p_course_settings = gdlr_lms_get_course_content_settings($course_options['prerequisite-course']);
if ($p_section == sizeof($p_course_settings)) {
$prerequisite = false;
}
}
}
}
}
// course author
global $post;
$is_course_author = $post->post_author == $current_user->ID;
// print button
if ($prerequisite) {
$options = array('prerequisite');
} else {
$find_row = gdlr_lms_get_payment_row(get_the_ID(), $current_user->ID, 'payment_status');
$payment_status = empty($find_row) ? false : $find_row->payment_status;
// for paid and free courses
if ($is_course_author || empty($course_options['price']) && empty($course_options['discount-price']) || $payment_status == 'paid') {
if (empty($course_options['online-course']) || $course_options['online-course'] == 'enable') {
$options = array('start');
} else {
if ($payment_status == 'reserved') {
$options = array('booking-status');
} else {
if ($payment_status != 'paid' && !$is_course_author) {
$options = array('book');
} else {
$options = array();
}
}
}
// booked course
} else {
if ($payment_status == 'pending' || $payment_status == 'submitted') {
$options = array('proceed-payment');
}
}
}
}
}
}
// receipt only
if (in_array('buy', $options) && !empty($gdlr_lms_option['payment-method']) && $gdlr_lms_option['payment-method'] == 'receipt') {
unset($options[array_search('buy', $options)]);
}
foreach ($options as $value) {
switch ($value) {
case 'buy':
if (empty($course_options['expired-date']) || time() < strtotime($course_options['expired-date'])) {
echo '<a data-rel="gdlr-lms-lightbox" data-lb-open="';
echo empty($lightbox_open) ? 'buy-form' : $lightbox_open;
echo '" class="gdlr-lms-button cyan" >' . __('Buy Now', 'gdlr-lms') . '</a>';
if (empty($lightbox_open)) {
gdlr_lms_purchase_lightbox_form($course_options, 'buy');
}
}
break;
case 'book':
if (empty($course_options['expired-date']) || time() < strtotime($course_options['expired-date'])) {
echo '<a data-rel="gdlr-lms-lightbox" data-lb-open="';
echo empty($lightbox_open) ? 'book-form' : $lightbox_open;
echo '" class="gdlr-lms-button blue" >' . __('Book Now', 'gdlr-lms') . '</a>';
if (empty($lightbox_open)) {
gdlr_lms_purchase_lightbox_form($course_options, 'book');
}
}
break;
case 'learn':
echo '<a class="gdlr-lms-button black" href="' . get_permalink() . '" >' . __('Learn More', 'gdlr-lms') . '</a>';
break;
case 'start':
echo '<a class="gdlr-lms-button cyan" href="' . esc_url(add_query_arg(array('course_type' => 'content', 'course_page' => 1), get_permalink())) . '" >';
_e('Start the course', 'gdlr-lms');
echo '</a>';
break;
case 'proceed-payment':
global $current_user;
echo '<a class="gdlr-lms-button cyan" href="' . esc_url(add_query_arg('type', 'book-courses', get_author_posts_url($current_user->ID))) . '" >';
_e('Proceed to Payment', 'gdlr-lms');
echo '</a>';
break;
case 'booking-status':
global $current_user;
echo '<a class="gdlr-lms-button cyan" href="' . esc_url(add_query_arg('type', 'free-onsite', get_author_posts_url($current_user->ID))) . '" >';
_e('Booking Status', 'gdlr-lms');
echo '</a>';
break;
case 'prerequisite':
echo __('You have to complete ', 'gdlr-lms') . '<a href="' . get_permalink($course_options['prerequisite-course']) . '" >';
echo get_the_title($course_options['prerequisite-course']);
echo '</a> ' . __('before you can access to this course.', 'gdlr-lms');
break;
case 'quiz':
if (!empty($course_options['quiz']) && $course_options['quiz'] != 'none') {
global $wpdb, $current_user;
$sql = 'SELECT * FROM ' . $wpdb->prefix . 'gdlrquiz ';
$sql .= 'WHERE quiz_id=' . $course_options['quiz'] . ' AND student_id=' . $current_user->ID . ' AND course_id=' . get_the_ID() . ' ';
$sql .= 'AND (quiz_status=\'complete\' OR quiz_status=\'submitted\')';
$old_quiz = $wpdb->get_row($sql);
if (!empty($old_quiz)) {
$quiz_val = gdlr_lms_decode_preventslashes(get_post_meta($course_options['quiz'], 'gdlr-lms-quiz-settings', true));
$quiz_options = empty($quiz_val) ? array() : json_decode($quiz_val, true);
if (!empty($quiz_options['retake-quiz']) && $quiz_options['retake-quiz'] == 'enable' && $old_quiz->retake_times < 9999 && (empty($quiz_options['retake-times']) || $old_quiz->retake_times < intval($quiz_options['retake-times']))) {
echo '<a class="gdlr-lms-button cyan" href="' . esc_url(add_query_arg(array('course_type' => 'quiz', 'course_page' => 1, 'retake' => 1), get_permalink())) . '" >';
_e('Retake a quiz', 'gdlr-lms');
echo '</a>';
}
} else {
if (is_user_logged_in()) {
echo '<a class="gdlr-lms-button cyan" href="' . esc_url(add_query_arg(array('course_type' => 'quiz', 'course_page' => 1), get_permalink())) . '" >';
_e('Take a quiz', 'gdlr-lms');
echo '</a>';
} else {
echo '<div class="gdlr-login-for-quiz" style="padding: 0px 20px 30px">';
_e('You have to register and login to the site before you can take the quiz.', 'gdlr-lms');
echo '</div>';
}
}
}
break;
case 'finish-quiz':
echo '<a href="' . esc_url(add_query_arg(array('course_type' => 'quiz', 'course_page' => 'finish'))) . '" ';
echo 'data-loading="' . __('Submitting the answer', 'gdlr-lms') . '" ';
echo 'class="gdlr-lms-button cyan finish-quiz-form-button" >';
_e('Finish the quiz', 'gdlr-lms');
echo '</a>';
gdlr_lms_finish_quiz_form();
break;
}
}
echo '</div>';
}
function gdlr_lms_register_course_template($template)
{
global $post, $current_user;
if ($post->post_type == 'course') {
$template = '';
if (isset($_GET['course_type'])) {
global $wpdb, $gdlr_course_settings, $gdlr_course_options, $lms_page, $payment_row;
$authorization = false;
$gdlr_course_options = gdlr_lms_get_course_options($post->ID);
$gdlr_course_settings = gdlr_lms_get_course_content_settings($post->ID);
$lms_page = empty($_GET['course_page']) ? 1 : intval($_GET['course_page']);
if (!is_user_logged_in() && !empty($gdlr_course_options['allow-non-member']) && $gdlr_course_options['allow-non-member'] == 'enable' && (empty($course_options['online-course']) || $course_options['online-course'] == 'enable')) {
$authorization = true;
} else {
if (is_user_logged_in()) {
if ($current_user->ID == $post->post_author) {
$authorization = true;
} else {
// check if purchase before
$payment_row = gdlr_lms_get_payment_row($post->ID, $current_user->ID);
if (!empty($payment_row)) {
if ($payment_row->payment_status == 'paid') {
$authorization = true;
if ($lms_page - 1 > $payment_row->attendance_section) {
$lms_page = $payment_row->attendance_section + 1;
}
if ($payment_row->attendance_section < $lms_page) {
$current_date = strtotime(date('Y-m-d H:i:s'));
if (!empty($gdlr_course_settings[$lms_page - 2]['wait-time']) && $lms_page > 1) {
$available_date = strtotime($payment_row->attendance) + intval($gdlr_course_settings[$lms_page - 2]['wait-time']) * 86400;
} else {
if (!empty($gdlr_course_settings[$lms_page - 2]['wait-date']) && $lms_page > 1) {
$available_date = strtotime($gdlr_course_settings[$lms_page - 2]['wait-date']);
} else {
$available_date = strtotime($payment_row->attendance);
}
}
if ($lms_page > 1 && $current_date <= $available_date) {
global $gdlr_time_left;
$gdlr_time_left = $available_date - $current_date;
} else {
$wpdb->update($wpdb->prefix . 'gdlrpayment', array('attendance' => date('Y-m-d H:i:s'), 'attendance_section' => $lms_page), array('id' => $payment_row->id), array('%s', '%d'), array('%d'));
$payment_row->attendance_section = $payment_row->attendance_section + 1;
}
}
}
// check whether it is free course
} else {
if (empty($gdlr_course_options['price-one'])) {
$authorization = true;
$gdlr_course_options['booked-seat'] = intval($gdlr_course_options['booked-seat']) + 1;
update_post_meta($post->ID, 'gdlr-lms-course-settings', json_encode($gdlr_course_options));
$running_number = intval(get_post_meta($post->ID, 'student-booking-id', true));
$running_number = empty($running_number) ? 1 : $running_number + 1;
update_post_meta($post->ID, 'student-booking-id', $running_number);
$code = substr(get_user_meta($current_user->ID, 'first_name', true), 0, 1) . substr(get_user_meta($current_user->ID, 'last_name', true), 0, 1);
$code .= $running_number . $gdlr_course_options['course-code'] . $post->ID;
$data = serialize(array('amount' => 1, 'price' => 0, 'code' => $code));
$wpdb->insert($wpdb->prefix . 'gdlrpayment', array('course_id' => $post->ID, 'student_id' => $current_user->ID, 'author_id' => $post->post_author, 'payment_date' => date('Y-m-d H:i:s'), 'payment_status' => 'paid', 'price' => '0', 'payment_info' => $data, 'attendance' => date('Y-m-d H:i:s'), 'attendance_section' => '1'), array('%d', '%d', '%d', '%s', '%s', '%s', '%s', '%s', '%s'));
$payment_row = gdlr_lms_get_payment_row($post->ID, $current_user->ID);
}
}
}
}
}
if ($authorization) {
if ($_GET['course_type'] == 'content') {
$template .= 'single-course-content.php';
} else {
if ($_GET['course_type'] == 'quiz') {
$template .= 'single-course-quiz.php';
}
}
}
}
$template = empty($template) ? 'single-course.php' : $template;
$template = dirname(dirname(__FILE__)) . '/' . $template;
} else {
if ($post->post_type == 'quiz') {
if ($current_user->ID == $post->post_author) {
$template = dirname(dirname(__FILE__)) . '/single-course-quiz.php';
} else {
$template = get_template_directory() . '/404.php';
}
}
}
return $template;
}
function gdlr_lms_cancel_booking()
{
global $wpdb;
$sql = 'SELECT * FROM ' . $wpdb->prefix . 'gdlrpayment ';
$sql .= 'WHERE id=' . $_POST['id'] . ' AND ';
$sql .= '(payment_status=\'pending\' OR payment_status=\'submitted\' OR payment_status=\'reserved\')';
$booked_course = $wpdb->get_row($sql);
if (!empty($booked_course)) {
$payment_info = unserialize($booked_course->payment_info);
$course_options = gdlr_lms_get_course_options($booked_course->course_id);
$course_options['booked-seat'] = intval($course_options['booked-seat']) - intval($payment_info['amount']);
update_post_meta($booked_course->course_id, 'gdlr-lms-course-settings', wp_slash(json_encode($course_options, JSON_UNESCAPED_UNICODE)));
$wpdb->delete($wpdb->prefix . 'gdlrpayment', array('id' => $_POST['id']), array('%d'));
}
die("");
}
