$(function () {
  // 图片懒加载
  $("img").lazyload();
  // 显示区高度
  let ch = document.documentElement.clientHeight || document.body.clientHeight,
    lock = false,
    // 加载 数据
    currentPage = 3, totalPage = 3,
    // 判断请求参数
    url = window.location.href,
    path = lxd.parseUrl(url).pathname
    , reg = /(?<=zt).*?(?=.html)/, special_category = !path.match(reg) ? '' : path.match(reg)[0];
  $(window).scroll(function () {
    if (lock) return false;
    // 滑动区高度
    let sh = document.documentElement.scrollHeight || document.body.scrollHeight,
      // 滑动位置
      st = document.documentElement.scrollTop || document.body.scrollTop,
      c = sh * 1 - ch * 1 - st * 1;
    if (c == 0 && currentPage <= totalPage) {
      lock = true;
      $(".my-loading").show();

      data({ currentPage, special_category }).then(res => { totalPage = res.totalPage; currentPage++; lock = res.lock; $(".my-loading").hide(); })
    }
    if (c == 0 && currentPage > totalPage) {

      $(".my-loading").html("已经没有可以加载的数据了").show();
    }
  })
  // 加载数据
  function data (data) {
    return new Promise(resolve => {
      $.ajax({
        url: "http://api.gaokaoapp.net/news/h/",
        data: {
          ...data,
          pageSize: 10
        },
        type: "get",
        error: function (error) {
          $(".my-loading").html("已经没有可以加载的数据了")
        },
        success: function (res) {
          let { dataList, totalPage } = res.data;
          let father = document.createDocumentFragment();
          Array.from(dataList).forEach(
            item => {
              let str = `<a target="_blank" href="http://www.gaokaoapp.net/h_news/${item.id}.html" class="list-item">
              <div class="item-img">
                <img  data-original="${item.thumbnail}"
                src="../imgs/app.png"
                  alt="">
              </div>
              <div class="item-detail">
                <div class="title">${item.title}</div>
                <div class="time">${item.source}<span>${item.delay_time}</span></div>
              </div>
            </a>`
              $(father).append(str);
            }
          )
          $(".list").append(father);
          $("img").lazyload();
          resolve({ lock: false, totalPage })
        }
      })
    })
  }
})