add getMktcBySeo

@@ -2,7 +2,6 @@
  * 移动端尝试打开 app
  */
 const qs = require('yoho-qs');
-const cookie = require('yoho-cookie');
 
 const u = navigator.userAgent;
 const isFromYOHO = /m\.yohobuy\.com/i.test(document.referrer);
@@ -22,6 +21,31 @@ const blackCheck = urlBlacklist.some(function(url) {
     return new RegExp(url, 'i').test(location.href);
 });
 
+/**
+ * 从referrer中获取信息，设定mktcode
+ */
+const channelMap = {
+    'baidu.com': 100000000000055,
+    'so.com': 100000000000049,
+    'sogou.com': 100000000000053,
+    'bing.com': 100000000000057,
+    'm.sm.cn': 100000000000059,
+    'google.com': 100000000000061
+};
+
+const getMktcBySeo = function() {
+    var mktc,
+        rf = document.referrer;
+
+    for (let domain in channelMap) {
+        if (rf.indexOf(domain) > -1) {
+            mktc = channelMap[domain];
+            break;
+        }
+    }
+    return mktc;
+};
+
 const canOpenApp = () => {
     if (isApp || isFromYOHO || nodownload || qs.nodownload || qs.no_openapp || blackCheck) {
         return false;
@@ -31,7 +55,7 @@ const canOpenApp = () => {
 
 const getAppPath = () => {
     let appPath = document.getElementById('main-wrap').dataset.apppath || 'yohobuy://yohobuy.com/goapp?openby:yohobuy={"action":"go.home","params":{"gender":"1","channel":"2"}}';
-    let ct = qs.mkt_code || qs.union_type || cookie.get('mkt_code') || '100000000000349';
+    let ct = qs.mkt_code || qs.union_type || getMktcBySeo() || '100000000000349';
 
     if (ct) {
         appPath = appPath.replace('goapp?', 'goapp?ct=' + ct + '&');