Open last viewed unit

Open last viewed unit

add_filter('wplms_get_course_unfinished_unit','load_unit',99999);

add_filter('wplms_get_course_unfinished_unit_key','unit_key',99999,3);

add_action('wp_footer','script_to_save_last_unit');

add_action('wp_ajax_save_last_viewed_unit','save_last_viewed_unit' );

 



  function script_to_save_last_unit(){
    //checking its course status page or not
    $page_id = vibe_get_option('take_course_page');
    if(!is_page($page_id))
      return;

    ?>
    <script>
      jQuery(document).ready(function($){
        $('.unit_content').on('unit_traverse',function(){
          var unit_id = $('.unit_line.active');
          var course_id = $("#course_id").val();
          if(typeof unit_id !== 'udefined' && unit_id){
            var last_unit = unit_id.find('a').data('unit');
            //make ajax hit to store this current unit id for the user in usermeta for this course
            //meta_key: current_unit.{course_id} meta_value: unit_id
            $.ajax({
              type: "POST",
              url: ajaxurl,
              data: { action: 'save_last_viewed_unit', 
                  unit_id:last_unit,
                  course_id:course_id,
                  hash: $('#hash').val(),
              },
              cache: false,
              success: function(response){
                console.log(response);
              }
            });
          }
        });
      });
    </script>
    <?php
  }

  function save_last_viewed_unit(){
    
    if ( !isset($_POST['hash']) || !wp_verify_nonce($_POST['hash'],'security') || !is_numeric($_POST['unit_id']) || !is_numeric($_POST['course_id'])){
            _e('Security check Failed. Contact Administrator.','wplms-last-unit');
            die();
        }

      $user_id = get_current_user_id();
        $meta_key = 'current_unit_'.$_POST['course_id'];
        $meta_value = $_POST['unit_id'];

        update_user_meta( $user_id, $meta_key, $meta_value);
        die();

  }

  function load_unit($unit_id){
    if(!empty($_POST['load_unit']))
      return $unit_id;
    $user_id = get_current_user_id();
        $course_id = $_POST['course_id'];

      $last_viewed_unit = get_user_meta($user_id, 'current_unit_'.$course_id, true);
      //echo $last_viewed_unit;die;
        if(empty($last_viewed_unit))
            return $unit_id;

       
        $units = bp_course_get_curriculum_units($course_id);
        if(in_array($last_viewed_unit,$units)){
             return $uid;
        }
         
        return $unit_id;
    }

    function unit_key($key,$unit_id,$course_id){
      if(!empty($_POST['load_unit']))
      return $key;
      $user_id = get_current_user_id();
      $last_viewed_unit = get_user_meta($user_id, 'current_unit_'.$course_id, true);

        if(!empty($last_viewed_unit)) {
          $unit_id = $last_viewed_unit;
        }
        $units = bp_course_get_curriculum_units($course_id);
        $key = array_search($unit_id,$units);
        $key++;

        return $key;
    }