'router'

+/**
+ * 匹配subdomain
+ * @author: 杨延青<yanqing.yang@yoho.cn>
+ * @date: 2016/6/16
+ */
+'use strict';
+const querystring = require('querystring');
+const helpers = global.yoho.helpers;
+
+module.exports = () => {
+    return (req, res, next) => {
+        if (req.subdomains.length) {
+            switch (req.subdomains[0]) {
+                case 'guang': // 逛
+                    req.url = req.url.replace('/guang', '');
+                    req.url = `/guang${req.url}`;
+                    break;
+                case 'list': // list
+                    req.url = `/product/index/index?${querystring.stringify(req.query)}`;
+                    break;
+                case 'search': // search
+                    req.url = `/product/search/list?${querystring.stringify(req.query)}`;
+                    break;
+                case 'sale': // sale
+                    res.redirect(301, helpers.urlFormat('/product/sale', req.query, 'default'));
+                    return;
+                case 'new': // new.m.yohobuy.com 全部跳转到 m.yohobuy.com
+                    res.redirect(301, helpers.urlFormat(req.path, req.query, 'default'));
+                    return;
+                case 'item': // item.m.yohobuy.com 全部跳转到 m.yohobuy.com
+                    res.redirect(301, helpers.urlFormat(req.path, req.query, 'default'));
+                    return;
+                default: // 其它(识别为品牌)
+                    req.url = `/product/index/brand?domain=${req.subdomains[0]}`;
+                    break;
+            }
+        }
+        next();
+    };
+};