optimize product detail

@@ -285,8 +285,19 @@ const getPackage = (req, res, next) => {
         .catch(next);
 };
 
-const redirectNewRouter = (req, res) => {
-    return res.redirect(301, helpers.urlFormat(`/p${req.params[0]}.html${req.params[3]}`, null, 'item'));
+const getProductIntro = (req, res, next) => {
+    let skn = req.query.skn || '';
+
+    if (!skn) {
+        return res.json({
+            code: 500,
+            message: '服务器错误'
+        });
+    }
+
+    service.getIntro(skn)
+        .then(result => res.json(result))
+        .catch(next);
 };
 
 module.exports = {
@@ -302,5 +313,5 @@ module.exports = {
     getPackage,
     likeConsult,
     usefulConsult,
-    redirectNewRouter
+    getProductIntro
 };

@@ -1005,7 +1005,7 @@ const _getIntroInfo = (productSkn, maxSortId, additionalData)=> {
     result.material = _getMaterialDataBySizeInfo(sizeInfo);
 
     // 商品详情页介绍
-    result.details = _getDetailDataBySizeInfo(sizeInfo);
+    // result.details = _getDetailDataBySizeInfo(sizeInfo);
 
     return result;
 };
@@ -1776,6 +1776,20 @@ const getPackage = co(function * (skn) {
     return resData;
 });
 
+/**
+ * 获取商品详细介绍信息
+ */
+const getIntro = co(function * (skn) {
+    let sizeInfo = yield productAPI.sizeInfoAsync(skn);
+
+    let result = _getDetailDataBySizeInfo(sizeInfo);
+
+    return {
+        code: 200,
+        data: result
+    };
+});
+
 module.exports = {
     getShareOrderListAsync: commentService.getShareOrderListAsync, // 获取评论列表
     indexConsultAsync: consultService.indexAsync, // 获取咨询列表
@@ -1789,5 +1803,6 @@ module.exports = {
     getDetailHeader,
     saleReturn,
     recommendAsync,
-    getPackage
+    getPackage,
+    getIntro
 };

@@ -65,10 +65,13 @@ router.get('/outlets/special/detail', outlets.special); // 憟亥瘣餃憿
 router.get('/outlets/list', outlets.list); // 奥莱品类页
 router.get('/outlets/:channel', outlets.channel); // 奥莱频道页
 
-// 商品分类列表页
+// 商品详情
 router.get('/list', outletsList.index);
-router.get(/^\/([\d]+)(.*)/, detail.showMain);                           // 新的商品详情routers
-router.get(/\/p([\d]+)(.*)/, detail.showMainBack);                      // 新的商品详情routers
+router.get(/^\/([\d]+)(.*)/, detail.showMain);                          // 新的商品详情routers
+router.get(/\/p([\d]+)(.*)/, detail.showMainBack);                      // 老的商品详情routers
+
+router.get('/detail/header', detail.productHeader);                     // 价格数据重新获取接口
+router.get('/detail/intro', detail.getProductIntro);                    // 商品详细介绍
 router.get('/detail/comment', detail.indexComment);                     // 商品评论
 router.get('/detail/consult', detail.indexConsult);                     // 商品咨询
 router.post('/detail/consult', auth, detail.createConsult);             // 创建咨询
@@ -77,7 +80,6 @@ router.get('/detail/consult/useful/:id', auth, detail.usefulConsult);   // 霂
 router.get('/detail/hotarea', detail.indexHotArea);                     // 商品热区
 router.post('/index/favoriteBrand', favorite.changeFavoriteBrand);      // 收藏品牌
 router.post('/item/togglecollect', favorite.collectProduct);            // 收藏商品
-router.get('/detail/header', detail.productHeader);                     // 价格数据重新获取接口
 router.get('/detail/return', detail.detailReturn);                      // 特殊商品退换货
 router.get('/detail/recommend', detail.recommend);                      // 推荐商品
 router.get('/index/isfav', favorite.isFavoriteBrand);                   // 品牌收藏状态

@@ -7,12 +7,15 @@
         <div class="lazy-load-object">
                             <textarea class="datalazyload" style="visibility: hidden;">
                                 <script>
-                                    fetchHotArea();
+                                    loadProductIntro();
                                 </script>
                             </textarea>
 
         </div>
-        {{{details}}}
+
+        <div id="details-intro-holder">
+            {{{details}}}
+        </div>
 
         {{#if goodsInfo.imageBanner.url}}
             <a class="img-link" href="{{goodsInfo.imageBanner.url}}">

@@ -18,6 +18,7 @@ var dataLazyLoad = require('../plugins/lazy-load')(document);
 var setPager = require('./detail/pager');
 var notify = require('./detail/notify');
 var favorite = require('./detail/brand-fav');
+var intro = require('./detail/intro');
 
 var bindEvent = $.Callbacks();                         // eslint-disable-line
 var cartEvent = new EventProxy();
@@ -1101,7 +1102,7 @@ $('.after-service-switch').click(function() {
 
 // 商品详情区的热点
 function loadHotArea() {
-    $.ajax({
+    return $.ajax({
         type: 'GET',
         url: '/product/detail/hotarea',
         data: {
@@ -1124,12 +1125,26 @@ function loadHotArea() {
     });
 }
 
-window.fetchHotArea = window.once(loadHotArea);
+// 商品详情区图片懒加载
+function introLazyLoad() {
+    lazyLoad($('#details-html img'), {
+        threshold: 1000
+    });
+}
+
+// 商品详情区
+function loadProductIntro() {
+    return intro.getHtml(skn).then(function(result) {
+        $(result).replaceAll('#details-intro-holder');
+    }).then(function() {
+        introLazyLoad();
+
+        return loadHotArea();
+    });
+}
+
+window.loadProductIntro = window.once(loadProductIntro);
 
-// 商品详情图片懒加载
-lazyLoad($('#details-html img'), {
-    threshold: 1000
-});
 
 // 咨询和评价
 function loadComment() {

+var $ = require('yoho-jquery');
+
+exports.getHtml = function(skn) {
+    return $.get('/product/detail/intro', {skn: skn}).then(function(result) {
+        if (result.code !== 200) {
+            return '';
+        }
+
+        return result.data;
+    });
+};

@@ -1441,6 +1441,12 @@
         .img-responsive {
             width: 100%;
         }
+
+        #details-intro-holder {
+            display: block;
+            width: 100%;
+            height: 500px;
+        }
     }
 
     .consult-comment .title {