/**
* Calculate the progress of a student in a course
* [Modified by TuNguyen on May 18 2015]
*
* @param $course_id
*
* @return float|int
*/
function lpr_course_evaluation($course_id)
{
$user_id = get_current_user_id();
$lesson_completed = get_user_meta($user_id, '_lpr_lesson_completed', true);
$number_lesson = sizeof(learn_press_get_lessons_in_course($course_id));
//lpr_get_number_lesson( $course_id );
if ($lesson_completed && !empty($lesson_completed[$course_id]) && $number_lesson != 0) {
$course_result = sizeof($lesson_completed[$course_id]) / $number_lesson;
} else {
$course_result = 0;
}
return $course_result * 100;
}
/**
* Calculate the progress of a student in a course
* [Modified by TuNguyen on May 18 2015]
*
* @param $course_id
*
* @return float|int
*/
function lpr_course_evaluation($course_id)
{
$user_id = get_current_user_id();
$lesson_completed = get_user_meta($user_id, '_lpr_lesson_completed', true);
$all_lessons = learn_press_get_lessons_in_course($course_id);
$number_lesson = sizeof($all_lessons);
if ($lesson_completed && !empty($lesson_completed[$course_id]) && $number_lesson != 0) {
$not_complete = array_diff($all_lessons, $lesson_completed[$course_id]);
$course_result = ($number_lesson - sizeof($not_complete)) / $number_lesson;
} else {
$course_result = 0;
}
$return = $course_result * 100;
return apply_filters('lpr_course_evaluation', $return, $course_id, $user_id);
}
/**
* Complete lesson
*/
public static function complete_lesson()
{
global $post;
$user_id = get_current_user_id();
$lesson_id = !empty($_POST['lesson']) ? $_POST['lesson'] : 0;
if (!$user_id || !$lesson_id) {
wp_die(__('Access denied!', 'learn_press'));
}
$response = array();
if (learn_press_mark_lesson_complete($lesson_id, $user_id)) {
$course_id = learn_press_get_course_by_lesson($lesson_id);
$lessons = learn_press_get_lessons_in_course($course_id);
$lesson_completed = get_user_meta($user_id, '_lpr_lesson_completed', true);
$lesson_completed = !empty($lesson_completed[$course_id]) ? $lesson_completed[$course_id] : array();
if ($lessons) {
if (false !== ($pos = array_search($lesson_id, $lessons))) {
$loop = $pos == count($lessons) - 1 ? 0 : $pos + 1;
$infinite = 0;
$max = count($lessons);
while (in_array($lessons[$loop], $lesson_completed) && $lessons[$loop] != $lesson_id) {
$loop++;
if ($loop == $max) {
$loop = 0;
}
if ($infinite > $max) {
break;
}
}
if ($lessons[$loop] != $lesson_id) {
$response['url'] = learn_press_get_course_lesson_permalink($lessons[$loop], $course_id);
} else {
$response['url'] = learn_press_get_course_lesson_permalink($lesson_id, $course_id);
}
}
}
}
learn_press_send_json($response);
die;
}
/**
* Display the next/previous buttons to move the lesson to next or previous
*/
function learn_press_course_content_next_prev_lesson()
{
// we are not in the loop of the course
// we are in the loop of the lesson
$course_id = learn_press_get_course_by_lesson(get_the_ID());
if (!learn_press_user_has_enrolled_course($course_id)) {
return;
}
$lessons = learn_press_get_lessons_in_course($course_id);
if (!is_array($lessons)) {
return;
}
$current_position = array_search(get_the_ID(), $lessons);
$prev = null;
$next = null;
if (1 < ($n = sizeof($lessons))) {
if ($current_position < sizeof($lessons) - 1) {
$next_position = $current_position + 1;
$next_id = $lessons[$next_position];
$button_text = get_the_title($next_id);
$button_text = apply_filters('learn_press_course_content_next_button_text', $button_text, $next_id, $course_id);
$next = sprintf('<a href="%s" class="next-lesson" data-id="%d">%s</a>', learn_press_get_course_lesson_permalink($next_id, $course_id), $next_id, $button_text);
}
if ($current_position > 0) {
$prev_position = $current_position - 1;
$prev_id = $lessons[$prev_position];
$button_text = get_the_title($prev_id);
$button_text = apply_filters('learn_press_course_content_prev_button_text', $button_text, $prev_id, $course_id);
$prev = sprintf('<a href="%s" class="prev-lesson" data-id="%d">%s</a>', learn_press_get_course_lesson_permalink($prev_id, $course_id), $prev_id, $button_text);
}
$args = compact('prev_id', 'next_id', 'prev', 'next');
do_action('learn_press_before_course_content_lesson_nav', $args);
printf('<p class="course-content-lesson-nav">%s%s</p>', $prev, $next);
do_action('learn_press_after_course_content_lesson_nav', $args);
}
}
/**
* Complete lesson
*/
public static function complete_lesson()
{
$nonce = learn_press_get_request('nonce');
$item_id = learn_press_get_request('id');
$post = get_post($item_id);
if (!$post || $post && !wp_verify_nonce($nonce, sprintf('learn-press-complete-%s-%d', $post->post_type, $post->ID))) {
throw new Exception(__('Error ', 'learn_press'));
}
$user = learn_press_get_current_user();
$response = array('result' => 'error');
if ($user->complete_lesson($item_id)) {
ob_start();
learn_press_display_message(__('Congratulations! You have completed this lesson.', 'learn_press'));
$response['message'] = ob_get_clean();
$response['result'] = 'success';
}
learn_press_send_json($response);
die;
global $post;
$user_id = get_current_user_id();
$lesson_id = !empty($_POST['lesson']) ? $_POST['lesson'] : 0;
if (!$user_id || !$lesson_id) {
wp_die(__('Access denied!', 'learn_press'));
}
$response = array();
if (learn_press_mark_lesson_complete($lesson_id, $user_id)) {
$course_id = learn_press_get_course_by_lesson($lesson_id);
$lessons = learn_press_get_lessons_in_course($course_id);
$lesson_completed = get_user_meta($user_id, '_lpr_lesson_completed', true);
$lesson_completed = !empty($lesson_completed[$course_id]) ? $lesson_completed[$course_id] : array();
if ($lessons) {
if (false !== ($pos = array_search($lesson_id, $lessons))) {
$loop = $pos == count($lessons) - 1 ? 0 : $pos + 1;
$infinite = 0;
$max = count($lessons);
while (in_array($lessons[$loop], $lesson_completed) && $lessons[$loop] != $lesson_id) {
$loop++;
if ($loop == $max) {
$loop = 0;
}
if ($infinite > $max) {
break;
}
}
if ($lessons[$loop] != $lesson_id) {
$response['url'] = learn_press_get_course_lesson_permalink($lessons[$loop], $course_id);
} else {
$response['url'] = learn_press_get_course_lesson_permalink($lesson_id, $course_id);
}
}
}
}
learn_press_send_json($response);
die;
}
