/**
 * Finish a course by ID of an user
 * When a course marked is finished then also mark all lessons, quizzes as completed
 *
 * @param int $course_id
 * @param int $user_id
 *
 * @return array
 */
function learn_press_finish_course($course_id = null, $user_id = null)
{
    $course_id = learn_press_get_course_id($course_id);
    if (!$user_id) {
        $user_id = get_current_user_id();
    }
    $course_finished = get_user_meta($user_id, '_lpr_course_finished', true);
    if (!$course_finished) {
        $course_finished = array();
    }
    $course_finished[] = $course_id;
    $course_finished = array_unique($course_finished);
    update_user_meta($user_id, '_lpr_course_finished', $course_finished);
    $user_finished = get_post_meta($course_id, '_lpr_user_finished', true);
    if (!$user_finished) {
        $user_finished = array();
    }
    $user_finished[] = $user_id;
    update_post_meta($course_id, '_lpr_user_finished', $user_finished);
    $lesson_quiz = learn_press_get_lessons_quizzes($course_id, false);
    if ($lesson_quiz) {
        foreach ($lesson_quiz as $post) {
            if ('lpr_lesson' == $post->post_type) {
                learn_press_mark_lesson_complete($post->ID);
            } else {
                learn_press_mark_quiz_complete($post->ID);
            }
        }
    }
    do_action('learn_press_user_finished_course', $course_id, $user_id);
    return array('finish' => true, 'message' => '');
}
/**
 * Finish a course by ID of an user
 * When a course marked is finished then also mark all lessons, quizzes as completed
 *
 * @param int $course_id
 * @param int $user_id
 *
 * @return array
 */
function learn_press_finish_course($course_id = null, $user_id = null)
{
    $course_id = learn_press_get_course_id($course_id);
    if (!$user_id) {
        $user_id = get_current_user_id();
    }
    $can_finish = !learn_press_get_current_user()->is('guest');
    if (!apply_filters('lp_before_finish_course', $can_finish, $course_id, $user_id)) {
        return;
    }
    $course_finished = get_user_meta($user_id, '_lpr_course_finished', true);
    if (!$course_finished) {
        $course_finished = array();
    }
    $course_finished[] = $course_id;
    $course_finished = array_unique($course_finished);
    update_user_meta($user_id, '_lpr_course_finished', $course_finished);
    $course_time = get_user_meta($user_id, '_lpr_course_time', true);
    if (!$course_time) {
        $course_time = array();
    }
    if (!empty($course_time[$course_id])) {
        $course_time[$course_id]['end'] = current_time('timestamp');
    }
    update_user_meta($user_id, '_lpr_course_time', $course_time);
    //learn_press_output_file( $course_time, 'finish_course.txt' );
    $user_finished = get_post_meta($course_id, '_lpr_user_finished', true);
    if (!$user_finished) {
        $user_finished = array();
    }
    $user_finished[] = $user_id;
    update_post_meta($course_id, '_lpr_user_finished', $user_finished);
    $lesson_quiz = learn_press_get_lessons_quizzes($course_id, false);
    if ($lesson_quiz) {
        foreach ($lesson_quiz as $post) {
            if ('lpr_lesson' == $post->post_type) {
                learn_press_mark_lesson_complete($post->ID);
            } else {
                learn_press_mark_quiz_complete($post->ID);
            }
        }
    }
    do_action('learn_press_user_finished_course', $course_id, $user_id);
    return array('finish' => true, 'message' => '');
}