/**
 *  Ajax Comment
 *  Last Update: 2020/02/26
 */


/**
 * Tmp
 */
var dataTmp = {
 comments: {}
};


/**
 * 评论部分
 */
var MiraclesComment = {
 //评论核心函数
 core: function() {
  var commentID = $('.comment-box-id').attr('id');
  window.TypechoComment = {
   dom : function (id) {
    return document.getElementById(id);
   },

   create : function (tag, attr) {
    var el = document.createElement(tag);

    for (var key in attr) {
     el.setAttribute(key, attr[key]);
    }

    return el;
   },

   reply : function (cid, coid) {
    var comment = this.dom(cid), parent = comment.parentNode,
    response = this.dom(commentID), input = this.dom('comment-parent'),
    form = 'form' == response.tagName ? response : response.getElementsByTagName('form')[0],
    textarea = response.getElementsByTagName('textarea')[0];

    if (null == input) {
     input = this.create('input', {
      'type' : 'hidden',
      'name' : 'parent',
      'id'   : 'comment-parent'
     });

     form.appendChild(input);
    }
    input.setAttribute('value', coid);

    if (null == this.dom('comment-form-place-holder')) {
     var holder = this.create('div', {
      'id' : 'comment-form-place-holder'
     });

     response.parentNode.insertBefore(holder, response);
    }

    comment.appendChild(response);
    this.dom('cancel-comment-reply-link').style.display = '';

    if (null != textarea && 'text' == textarea.name) {
     textarea.focus();
    }

    return false;
   },

   cancelReply : function () {
    var response = this.dom(commentID),
    holder = this.dom('comment-form-place-holder'), input = this.dom('comment-parent');

    if (null != input) {
     input.parentNode.removeChild(input);
    }
	
    if (null == holder) {
     return true;
    }
	
    this.dom('cancel-comment-reply-link').style.display = 'none';
    holder.parentNode.insertBefore(response, holder);
    return false;
   }
  };
 },

 //提交评论
 submitComment: function() {
  //如果获取不到评论提交 URL 则终止
  if(!$('.comment-box-id').attr('data-commentUrl')) { return false; }

  /* ===== 检查是否完整 =====*/
  if (!$('#comment-form #textarea').val()) {
   alertSend('请填写评论内容！', 'error');
   return false;
  }

  if ($('#comment-form .comment-input #author').length && !$('#comment-form .comment-input #author').val()) {
   alertSend('请填写您的昵称！', 'error');
   return false;
  }

  //评论前需要做的事情
  function beforeComment() {
   //禁用按钮
   $('#comment-form .comment-submit').attr('disabled', true);
   $('#comment-form').addClass('comment-sending');
   $('#comment-form .comment-submit').text(commentSubmit);
  };
  beforeComment();

  //评论后需要做的事情
  function afterComment(status) {
   //取消禁用评论按钮
   $('#comment-form .comment-submit').removeAttr('disabled');
   $('#comment-form').removeClass('comment-sending');
   $('#comment-form .comment-submit').text(commentSubmitLoading);

   //判断是否评论成功
   if(status) {
    //如果成功
    if ($('.comment-waiting').length>0) {
      alertSend('评论提交成功，正在等待审核！', 'success');
	  LazyLoad();//防止 owo 表情懒加载失效
    }else{
      alertSend('评论提交成功！', 'success');
	  LazyLoad();//防止 owo 表情懒加载失效
    } 
    //清空被回复 ID
    dataTmp.comments.replyTo = '';
   }else{
    //如果失败
    alertSend('评论提交失败！', 'error');
   }

   //无论是否成功都要重新绑定回复按钮 ID
   MiraclesComment.bindReplyBtn();
  }

  //AJAX 提交
  $.ajax({
   type: 'POST',
   url: $('.comment-box-id').attr('data-commentUrl'),
   data: $('#comment-form').serialize(),
   success: function(data) {
    var data = $("<body></body>").append($(data));
    var $html = $("title", data); //返回的内容

    //评论成功
    if ($html.html() != 'Error') {
     $('#comment-form #textarea').val(''); //清空评论框

     //获取新评论 ID
     if (data.html()) {
      dataTmp.comments.NewID = $(".comment-list", data).html().match(/id=\"?comment-\d+/g).join().match(/\d+/g).sort(function (a, b) { return a - b }).pop();
     }else{
      alertSend('评论失败！请刷新页面', 'error');
      return false;
     }

     console.log(dataTmp.comments.replyTo);

     //如果是父评论
     if('' === dataTmp.comments.replyTo) {
      if(!$('.comment-list').length) {
       //检查是否已有评论
       //如果没有先插入评论列表基本结构
       dataTmp.comments.NewComment = $("#comment-" + dataTmp.comments.NewID, data);
       $('.comment').prepend('<div class="comment-container"><h3 class="comment-title" id="response">已有 0 条评论</h3><div class="comment-list"></div></div>');
       $('.comment .comment-list').first().prepend((dataTmp.comments.NewComment).addClass('comment-animation-fadein'));
      } else if($('.prev').length) {
       //如果不在第一页
       $('.comment-pagenav li a').eq(1).click();
      } else {
       //当前在第一页
       dataTmp.comments.NewComment = $("#comment-" + dataTmp.comments.NewID, data);
       $('.comment .comment-list').first().prepend((dataTmp.comments.NewComment).addClass('comment-animation-fadein'));
      }

     } else {
      //如果是子评论
      dataTmp.comments.NewComment = $("#comment-" + dataTmp.comments.NewID, data);

      if ($('#'+dataTmp.comments.replyTo).find('.comment-children').length) {
       //当前父评论已经有嵌套的结构
       //直接插入新的评论
       $('#'+ dataTmp.comments.replyTo +' .comment-children .comment-list').first().prepend((dataTmp.comments.NewComment).addClass('comment-animation-fadein'));
       TypechoComment.cancelReply();
      } else {
       //当前父评论没有嵌套的结构
       //先构建嵌套的结构再进插入子评论
       $('#'+ dataTmp.comments.replyTo).append('<div class="comment-children"><div class="comment-list"></div></div>');
       $('#'+ dataTmp.comments.replyTo +' .comment-children .comment-list').first().prepend((dataTmp.comments.NewComment).addClass('comment-animation-fadein'));
       TypechoComment.cancelReply();
      }
     }

     //评论数量增加
     if (/\d+/.test($('.comment .comment-container .comment-title').text())) {
      var counts = parseInt($('.comment .comment-container .comment-title').text().replace(/[^0-9]/ig,""));
      $('.comment .comment-container .comment-title').html($('.comment .comment-container .comment-title').html().replace(/\d+/, counts + 1));
     }

     //评论后需要处理的事情
     afterComment(true);
    }else{
     //评论失败
     afterComment(false);
    }
   }
  });
 },

 //为回复/取消回复按钮绑定事件
 bindReplyBtn: function() {
  //如果评论列表不存在
  if(!$('.comment').length) { return false; }
  //初始化被回复评论变量
  dataTmp.comments.replyTo = '';

  for(let i=0; i<$(".comment-reply a").length; ++i) {
   $(".comment-reply a")[i].addEventListener('click', function() {
    dataTmp.comments.replyTo = $(this).parent().parent().parent().parent().parent().attr("id");
   });
  }
 }
};

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//执行
MiraclesComment.core();
MiraclesComment.bindReplyBtn();