function unit_traverse()
{
$unit_id = $_POST['id'];
$course_id = $_POST['course_id'];
if (!isset($_POST['security']) || !wp_verify_nonce($_POST['security'], 'security')) {
_e('Security check Failed. Contact Administrator.', 'vibe');
die;
}
//verify unit in course
$units = bp_course_get_curriculum_units($course_id);
if (!in_array($unit_id, $units)) {
_e('Unit not in Course', 'vibe');
die;
}
// Check if user has taken the course
$user_id = get_current_user_id();
$coursetaken = get_user_meta($user_id, $course_id, true);
if (!isset($_COOKIE['course'])) {
if ($coursetaken > time()) {
setcookie('course', $course_id, $expire, '/');
$_COOKIE['course'] = $course_id;
} else {
$pid = get_post_meta($course_id, 'vibe_product', true);
$pid = apply_filters('wplms_course_product_id', $pid, $course_id, -1);
// $id checks for Single Course page or Course page in the my courses section
if (is_numeric($pid)) {
$pid = get_permalink($pid);
}
echo '<div class="message"><p>' . __('Course Expired.', 'vibe') . '<a href="' . $pid . '" class="link alignright">' . __('Click to renew', 'vibe') . '</a></p></div>';
die;
}
}
if (isset($coursetaken) && $coursetaken) {
if (!bp_course_check_unit_complete($unit_id, $user_id)) {
// IF unit not completed by user
// Drip Feed Check
$drip_enable = get_post_meta($course_id, 'vibe_course_drip', true);
if (vibe_validate($drip_enable)) {
$drip_duration = get_post_meta($course_id, 'vibe_course_drip_duration', true);
$drip_duration_parameter = apply_filters('vibe_drip_duration_parameter', 86400, $course_id);
$total_drip_turation = apply_filters('vibe_total_drip_duration', $drip_duration * $drip_duration_parameter, $course_id, $unit_id);
$unitkey = array_search($unit_id, $units);
for ($i = $unitkey - 1; $i >= 0; $i--) {
if (get_post_type($units[$i]) == 'unit') {
$pre_unit_key = $i;
break;
}
}
if ($unitkey == 0) {
// Start of Course
$pre_unit_time = bp_course_get_drip_access_time($units[$unitkey], $user_id);
if (!isset($pre_unit_time) || $pre_unit_time == '') {
bp_course_update_drip_access_time($units[$unitkey], $user_id, time());
if (is_numeric($units[1])) {
//Parmas : Next Unit, Next timestamp, course_id, userid
do_action('wplms_start_unit', $units[$unitkey], $course_id, $user_id, $units[1], time() + $drip_duration * $drip_duration_parameter);
}
}
} else {
//Continuation of Course
$pre_unit_time = get_post_meta($units[$pre_unit_key], $user_id, true);
if (isset($pre_unit_time) && $pre_unit_time) {
$value = $pre_unit_time + $drip_duration * $drip_duration_parameter;
$value = apply_filters('wplms_drip_value', $value, $units[$pre_unit_key], $course_id, $units[$unitkey]);
//print_r(date('l jS \of F Y h:i:s A',$value).' > '.date('l jS \of F Y h:i:s A',time()));
if ($value > time()) {
echo '<div class="message"><p>' . __('Unit will be available in ', 'vibe') . tofriendlytime($value - time()) . '</p></div>';
die;
} else {
$pre_unit_time = get_post_meta($units[$unitkey], $user_id, true);
if (!isset($pre_unit_time) || $pre_unit_time == '') {
update_post_meta($units[$unitkey], $user_id, time());
//Parmas : Next Unit, Next timestamp, course_id, userid
do_action('wplms_start_unit', $units[$unitkey], $course_id, $user_id, $units[$unitkey + 1], time() + $drip_duration * $drip_duration_parameter);
}
}
} else {
echo '<div class="message"><p>' . __('Unit can not be accessed.', 'vibe') . '</p></div>';
die;
}
}
}
// Drip enabled
}
// END Drip Feed Check
echo '<div id="unit" class="' . get_post_type($unit_id) . '_title" data-unit="' . $unit_id . '">';
do_action('wplms_unit_header', $unit_id, $course_id);
$duration = get_post_meta($unit_id, 'vibe_duration', true);
$unit_duration_parameter = apply_filters('vibe_unit_duration_parameter', 60, $unit_id);
if ($duration) {
do_action('wplms_course_unit_meta', $unit_id);
echo '<span><i class="icon-clock"></i> ' . tofriendlytime($unit_duration_parameter * $duration) . '</span>';
}
echo '<br /><h1>' . get_the_title($unit_id) . '</h1>';
the_sub_title($unit_id);
echo '<div class="clear"></div>';
echo '</div>';
the_unit($unit_id);
$unit_class = 'unit_button';
$hide_unit = 0;
$nextunit_access = vibe_get_option('nextunit_access');
$k = array_search($unit_id, $units);
$done_flag = get_user_meta($user_id, $unit_id, true);
$next = $k + 1;
$prev = $k - 1;
$max = count($units) - 1;
echo '<div class="unit_prevnext"><div class="col-md-3">';
if ($prev >= 0) {
if (get_post_type($units[$prev]) == 'quiz') {
echo '<a href="#" data-unit="' . $units[$prev] . '" class="unit ' . $unit_class . '">' . __('Previous Quiz', 'vibe') . '</a>';
} else {
echo '<a href="#" id="prev_unit" data-unit="' . $units[$prev] . '" class="unit unit_button">' . __('Previous Unit', 'vibe') . '</a>';
}
}
echo '</div>';
$quiz_passing_flag = true;
echo '<div class="col-md-6">';
if (get_post_type($units[$k]) == 'quiz') {
$quiz_status = get_user_meta($user_id, $units[$k], true);
if (is_numeric($quiz_status)) {
$quiz_passing_flag = apply_filters('wplms_next_unit_access', true, $units[$k]);
if ($quiz_status < time()) {
echo '<a href="' . bp_loggedin_user_domain() . BP_COURSE_SLUG . '/' . BP_COURSE_RESULTS_SLUG . '/?action=' . $units[$k] . '" class="quiz_results_popup">' . __('Check Results', 'vibe') . '</a>';
} else {
$quiz_class = apply_filters('wplms_in_course_quiz', '');
echo '<a href="' . get_permalink($units[$k]) . '" class=" unit_button ' . $quiz_class . ' continue">' . __('Continue Quiz', 'vibe') . '</a>';
}
} else {
$quiz_class = apply_filters('wplms_in_course_quiz', '');
echo '<a href="' . get_permalink($units[$k]) . '" class=" unit_button ' . $quiz_class . '">' . __('Start Quiz', 'vibe') . '</a>';
}
} else {
echo isset($done_flag) && $done_flag ? '' : apply_filters('wplms_unit_mark_complete', '<a href="#" id="mark-complete" data-unit="' . $units[$k] . '" class="unit_button">' . __('Mark this Unit Complete', 'vibe') . '</a>', $unit_id, $course_id);
}
echo '</div>';
echo '<div class="col-md-3">';
if ($next <= $max) {
if (isset($nextunit_access) && $nextunit_access) {
$hide_unit = 1;
if (isset($done_flag) && $done_flag) {
$unit_class .= ' ';
$hide_unit = 0;
} else {
$unit_class .= ' hide';
$hide_unit = 1;
}
}
if (get_post_type($units[$next]) == 'quiz') {
if ($quiz_passing_flag) {
echo '<a href="#" id="next_quiz" data-unit="' . $units[$next] . '" class="unit ' . $unit_class . '">' . __('Proceed to Quiz', 'vibe') . '</a>';
}
} else {
if ($quiz_passing_flag) {
echo '<a href="#" id="next_unit" ' . ($hide_unit ? '' : 'data-unit="' . $units[$next] . '"') . ' class="unit ' . $unit_class . '">' . __('Next Unit', 'vibe') . '</a>';
}
}
}
echo '</div></div>';
}
die;
}
function wplms_course_download_stats()
{
$course_id = $_POST['course'];
if (!isset($_POST['security']) || !wp_verify_nonce($_POST['security'], 'security')) {
echo __('Security check failed !', 'vibe');
die;
}
if (!current_user_can('edit_posts') || !is_numeric($course_id)) {
echo __('User does not have capability to download stats !', 'vibe');
die;
}
$fields = json_decode(stripslashes($_POST['fields']));
$type = stripslashes($_POST['type']);
if (!isset($type)) {
die;
}
$users = array();
$csv = array();
$csv_title = array();
global $wpdb, $bp;
switch ($type) {
case 'all_students':
$users = $wpdb->get_results($wpdb->prepare("SELECT user_id FROM {$wpdb->usermeta} WHERE meta_key = %s ", 'course_status' . $course_id), ARRAY_A);
break;
case 'finished_students':
$users = $wpdb->get_results($wpdb->prepare("SELECT user_id FROM {$wpdb->usermeta} WHERE meta_key = %s AND meta_value = %d", 'course_status' . $course_id, 4), ARRAY_A);
break;
case 'pursuing_students':
$users = $wpdb->get_results($wpdb->prepare("SELECT user_id FROM {$wpdb->usermeta} WHERE meta_key = %s AND meta_value < %d", 'course_status' . $course_id, 4), ARRAY_A);
break;
case 'badge_students':
$users = $wpdb->get_results($wpdb->prepare("SELECT user_id FROM {$wpdb->usermeta} WHERE meta_key = %s AND meta_value LIKE %s", 'badges', "%{$course_id}%"), ARRAY_A);
break;
case 'certificate_students':
$users = $wpdb->get_results($wpdb->prepare("SELECT user_id FROM {$wpdb->usermeta} WHERE meta_key = %s AND meta_value LIKE %s", 'certificates', "%{$course_id}%"), ARRAY_A);
break;
}
if (count($users)) {
foreach ($users as $user) {
$user_id = $user['user_id'];
$i = 0;
foreach ($fields as $k => $field) {
switch ($field) {
case 'stats_student_start_date':
$title = __('START DATE', 'vibe');
if (!in_array($title, $csv_title)) {
$csv_title[$i] = $title;
}
$date = $wpdb->get_results($wpdb->prepare("SELECT date_recorded FROM {$bp->activity->table_name} WHERE type=%s AND user_id = %d and item_id = %d", 'start_course', $user_id, $course_id));
if (is_array($date) && is_object($date[0]) && isset($date[0]->date_recorded)) {
$csv[$i][] = $date[0]->date_recorded;
} else {
$csv[$i][] = __('N.A', 'vibe');
}
break;
case 'stats_student_completion_date':
$title = __('COMPLETION DATE', 'vibe');
if (!in_array($title, $csv_title)) {
$csv_title[$i] = $title;
}
$date = $wpdb->get_results($wpdb->prepare("SELECT date_recorded FROM {$bp->activity->table_name} WHERE type=%s AND user_id = %d and item_id = %d", 'submit_course', $user_id, $course_id));
if (is_array($date) && is_object($date[0]) && isset($date[0]->date_recorded)) {
$csv[$i][] = $date[0]->date_recorded;
} else {
$csv[$i][] = __('N.A', 'vibe');
}
break;
case 'stats_student_id':
$title = __('ID', 'vibe');
if (!in_array($title, $csv_title)) {
$csv_title[$i] = $title;
}
$csv[$i][] = $user_id;
break;
case 'stats_student_name':
$title = __('NAME', 'vibe');
if (!in_array($title, $csv_title)) {
$csv_title[$i] = $title;
}
$csv[$i][] = bp_core_get_username($user_id);
break;
case 'stats_student_unit_status':
$units = bp_course_get_curriculum_units($course_id);
foreach ($units as $unit_id) {
if (get_post_type($unit_id) == 'unit') {
$title = get_the_title($unit_id);
if (!in_array($title, $csv_title)) {
$csv_title[$i] = $title;
}
if (bp_course_check_unit_complete($unit_id, $user_id)) {
$csv[$i][] = 1;
} else {
$csv[$i][] = 0;
}
$i++;
}
}
break;
case 'stats_student_quiz_score':
$units = bp_course_get_curriculum_units($course_id);
foreach ($units as $unit_id) {
if (get_post_type($unit_id) == 'quiz') {
$title = get_the_title($unit_id);
if (!in_array($title, $csv_title)) {
$csv_title[$i] = $title;
}
$score = get_post_meta($unit_id, $user_id, true);
if (!isset($score) || !$score) {
$csv[$i][] = __('N.A', 'vibe');
} else {
$csv[$i][] = $score;
}
$i++;
}
}
break;
case 'stats_student_badge':
$title = __('BADGE', 'vibe');
if (!in_array($title, $csv_title)) {
$csv_title[$i] = $title;
}
$check = $wpdb->get_results($wpdb->prepare("SELECT COUNT(meta_key) as count FROM {$wpdb->usermeta} WHERE meta_key = %s AND user_id = %d AND meta_value LIKE %s", 'badges', $user_id, "%{$course_id}%"), ARRAY_A);
if (isset($check) && is_array($check)) {
if ($check[0]['count']) {
$csv[$i][] = 1;
} else {
$csv[$i][] = 0;
}
}
break;
case 'stats_student_certificate':
$title = __('CERTIFICATE', 'vibe');
if (!in_array($title, $csv_title)) {
$csv_title[$i] = $title;
}
$check = $wpdb->get_results($wpdb->prepare("SELECT COUNT(meta_key) as count FROM {$wpdb->usermeta} WHERE meta_key = %s AND user_id = %d AND meta_value LIKE %s", 'certificates', $user_id, "%{$course_id}%"), ARRAY_A);
if (isset($check) && is_array($check)) {
if ($check[0]['count']) {
$csv[$i][] = 1;
} else {
$csv[$i][] = 0;
}
}
break;
case 'stats_student_marks':
$title = __('SCORE', 'vibe');
if (!in_array($title, $csv_title)) {
$csv_title[$i] = $title;
}
$score = get_post_meta($course_id, $user_id, true);
$csv[$i][] = $score;
break;
default:
do_action_ref_array('wplms_course_stats_process', array(&$csv_title, &$csv, &$i, &$course_id, &$user_id, &$field));
break;
}
$i++;
}
}
}
if (!count($csv) || !is_array($csv[0])) {
echo '#';
die;
}
$dir = wp_upload_dir();
$user_id = get_current_user_id();
$file_name = 'download_' . $course_id . '_' . $user_id . '.csv';
$filepath = $dir['basedir'] . '/stats/';
if (!file_exists($filepath)) {
mkdir($filepath, 0755);
}
$file = $filepath . $file_name;
if (file_exists($file)) {
unlink($file);
}
if (($handle = fopen($file, "w")) !== FALSE) {
fputcsv($handle, $csv_title);
$rows = count($csv[0]);
for ($i = 0; $i < $rows; $i++) {
$arr = array();
foreach ($csv as $key => $f) {
$arr[] = $f[$i];
}
fputcsv($handle, $arr);
}
}
fclose($handle);
$file_url = $dir['baseurl'] . '/stats/' . $file_name;
echo $file_url;
die;
}
