function send_comment(form, root){
    // Проверить комментарий
    // Отправить
    if (CKEDITOR.instances.comment_sent_text.getData()){
        $('[name=sent_comment_progress]').show();
        $('[name='+form+']').find('[name=comment_sent_text]').val(CKEDITOR.instances.comment_sent_text.getData());
            $.ajax({
              type: 'POST',
              url: '/courses/sent_lesson_comment',
              data: $('[name='+form+']').serialize(),
              success: function(data){
                if(data['code'] == '1'){
                    $('[name=sent_comment_progress]').hide();
                    document.forms[form].reset();
                    $('[name="comment_for_lesson_id"]').val($('[name=LESSON_ID]').val());
                    CKEDITOR.instances.comment_sent_text.setData('');
                    reload_lesson_comments(data['data']);
                    $('[name='+$('#'+root).attr('sketch_place')+']').html('')
                }
              }
            });
    } else {
        show_system_message('Введите текст сообщения')
    }

}

function write_comment(block, data){
    var message;
    var user_status;
    var reply;
    if (data['replies'].length==0){
        reply = ''
    } else {
        reply = '<img src="/static/img/1442036154_reply-circle-blue.png" style="margin-left: 30px;">' +
                '<Br>' +
                '<div class="m-b b-l m-l-md streamline" parent_id="' + data['id'] + '" style="margin-left: 75px;margin-top: -25px;"></div>';
    }

                          if (data['files'].length > 0 && !data['closed']){
                              message = '<div name="message_files" message_id="' + data['id'] + '"></div>'
                          } else {
                              message = '';
                          }
                          if (data['owner_type'] == 'U'){
                              user_status = ''
                          } else if (data['owner_type'] == 'T'){
                              user_status = '<label class="label bg-primary m-l-xs">Преподаватель</label>'
                          } else if (data['owner_type'] == 'M'){
                              user_status = '<label class="label bg-primary m-l-xs">Менеджер</label>'
                          } else if (data['owner_type'] == 'S'){
                              user_status = '<label class="label bg-primary m-l-xs">Руководитель</label>'
                          } else if (data['owner_type'] == 'A'){
                              user_status = '<label class="label bg-primary m-l-xs">Админстратор</label>'
                          }
                          var avatar;
                          if (data['closed']){
                              avatar = '<span class="pull-left thumb-sm avatar m-l-n-md"><img src="/static/img/1442473207_delete.png"></span>'
                          } else {
                              avatar = '<span class="pull-left thumb-sm avatar m-l-n-md">'+
                              '<img src="' + data['owner_avatar'] + '" class="img-circle">'+
                            '</span>'
                          }
                          var head;
                          if (data['closed']){
                              head = '<div class="panel-heading pos-rlt b-b b-light" style="background: #f1f1f1; color: #ccc;">'+
                                '<span class="arrow left" style="display: none;"></span>' +
                                      'КОММЕНТАРИЙ УДАЛЕН' +
                                '<span class="text-muted m-l-sm pull-right">'+
                                '</span></div>'
                          } else {
                             head = '<div class="panel-heading pos-rlt b-b b-light">'+
                                '<span class="arrow left" style="display: none;"></span>' +
                                 '<b style="margin-right: 5px;">' + data['owner'] + '</b>' +
                                '<span class="arrow left"></span>' + user_status +
                                '<span class="text-muted m-l-sm pull-right">'+
                                  '<i class="fa fa-clock-o"></i> &nbsp;'+
                                  data['date']+
                                '</span></div>'
                          }
                          var reply_button;
                          if (data['closed']){
                              reply_button = ''
                          } else {

                              if ( data['owner_id'] == $('[name=REQUEST_USER_ID]').val() ){
                                reply_button = '<a type="button" class="btn btn-danger btn-xs" onclick="delete_comment('+data['id']+')">' +
                                    '<i class="glyphicon glyphicon-remove"></i>&nbsp;Удалить</a>'
                              } else {
                                  reply_button = '<a type="button" class="btn btn-default btn-xs" onclick="reply_comment('+data['id']+')"><i class="fa fa-mail-reply text-muted"></i>&nbsp;Ответить</a>'
                              }
                          }
                          var text;
                          if (data['closed']){
                              text = '<div class="panel-body" style="display: none;">'
                          } else {
                              text = '<div class="panel-body">'+
                                '<div class="m-b-xs">' + data['text'] + '</div>'
                          }
                          $(block).append('<a name="comment_'+data['id']+'"></a><div name="comment_'+data['id']+'">' +
                            avatar +
                            '<div class="m-l-lg panel b-a">'+
                              head +
                              text +
                               message +
                              '<div class="m-t-sm">'
                                     + reply_button +
                                  '</div>' +
                              '</div>'+
                            '</div>'+
                          '</div>' + reply);

                          for (var r=0;r<data['replies'].length;r++){
                              write_comment($('[parent_id=' + data['id'] + ']'), data['replies'][r])
                          }
                          var file_block = $('[name=message_files][message_id=' + data['id'] + ']');
                          for (var n=0;n<data['files'].length;n++){
                              var file_id = '';
                              var target = '';
                              var context = '';
                              if (data['files'][n]['format'] == 'I'){
                                  file_id = 'single_image';
                                  target = '__blank';
                                  context = '<img src="'+data['files'][n]['url']+'" style="display: none;">'
                              }
                              var m =  '<div class="panel m-b-none"' +
                                  ' style="box-shadow: none; border: 1px solid rgba(0, 0, 0, 0.05); padding: 4px; margin-bottom: 3px !important;">' +
                                  '<a href="' + data['files'][n]['url'] + '" target="'+target+'" id="'+file_id+'">' + context +
                                  '<i class="' + data['files'][n]['icon'] + ' text-primary"></i> &nbsp;' +
                                  data['files'][n]['title'] +
                                  '<span class="text-u-l" style="margin-left: 5px;">' + data['files'][n]['name'] + '</span></a></div>';
                              file_block.append(m);
                          }
    $("a#single_image").fancybox();
                          }
function load_lesson_comments(type, reload_data){
    $('[name=lesson_comments_empty]').hide();
    $('[name=lesson_comments_block]').show();
    var comment_block = $('[name=lesson_comments_block]');
        $.ajax({
              type: 'POST',
              url: '/courses/load_lesson_comments',
              data: {'lesson': comment_block.attr('lesson_id')},
              success: function(data) {
                  $('[name=lesson_comments_load]').hide();
                  comment_block.show();
                  if (data['code'] == 0){
                      $('[name=lesson_comments_empty]').show();
                      $('[name=lesson_comments_block]').hide();
                      $('[name=comments_length]').html('0');
                  } else {
                      if (data['data'].length>0) {
                          for (var i = 0; i < data['data'].length; i++) {
                              write_comment(comment_block, data['data'][i]);
                          }
                          if (type == 'reload' && reload_data) {
                              location.hash = '';
                              location.hash = 'comment_' + reload_data
                          }
                         $('[name=comments_length]').html(window.lesson_comments_length);
                      } else {
                          $('[name=lesson_comments_empty]').show();
                          $('[name=lesson_comments_block]').hide();
                          $('[name=comments_length]').html('0');
                      }
                  }
              }
            });
}
function reload_lesson_comments(data){
    $('[name=lesson_comments_load]').show();
    $('[name=lesson_comments_block]').html('');
    if (data){
        load_lesson_comments('reload', data)
    } else {
        load_lesson_comments('reload')
    }

}
function delete_comment(id){
            $.ajax({
              type: 'POST',
              url: '/courses/delete_comment',
              data: {'comment': id},
              success: function(data){
                  if (data['code'] == '1'){
                      reload_lesson_comments(false);
                      location.hash='comment_list_place';
                  } else {
                      show_system_message(data['response'])
                  }
              }
            });

}
function reply_comment(id){
    $('[name=reply_for_comment_id]').val(id);
    $('[name=comment_sent_text]').focus()
}
function get_lesson_comments_length(){
            $.ajax({
              type: 'GET',
              url: '/courses/get_lesson_comments_length',
                async: true,
              data: {'id': $('[name=LESSON_ID]').val()},
              success: function(data){
                  if (data['code'] == '1'){
                      var comments_length = data['data'];
                        if (window.lesson_comments_length != comments_length){
                            reload_lesson_comments();
                            window.lesson_comments_length = comments_length
                        }
                  } else {
                      show_system_message(data['response'])
                  }
              }
            });
}
$(function() {
    CKEDITOR.replace( 'comment_sent_text' );
    $("a#single_image").fancybox();
        setInterval(function(){
                get_lesson_comments_length();
            }
        , 200000);
});