PWA 开关调试

+module.exports = {
+    index(req, res) {
+        // 千万别缓存
+        res.set({
+            'Cache-Control': 'no-cache',
+            Pragma: 'no-cache',
+            Expires: (new Date(1900, 0, 1, 0, 0, 0, 0)).toUTCString()
+        });
+
+        res.jsonp({
+            usePwa: true
+        });
+    }
+};

@@ -17,6 +17,7 @@ const hotfix = require(`${cRoot}/hotfix`);
 const apple = require(`${cRoot}/apple`);
 const rn = require(`${cRoot}/rn`);
 const forward = require(`${cRoot}/forward`);
+const switchModel = require(`${cRoot}/switch`);
 
 // routers
 router.post('/api/upload/image', multipartMiddleware, uploadApi.uploadImg);
@@ -25,5 +26,6 @@ router.post('/rn/v1', rn.v1);
 
 router.get('/.well-known/apple-app-site-association', apple.appSiteAssociation);
 router.get('/api/wechat/miniapp.jpg', forward.miniapp);
+router.get('/api/switch', switchModel.index);
 
 module.exports = router;

+import $ from 'yoho-jquery';
+
 const isHttps = location.protocol === 'https:';
-const usePwa = isHttps;
 
-window.addEventListener('load', function() {
-    if ('serviceWorker' in navigator) {
-        if (usePwa) {
+function register() {
     const t = window.STATIC_RESOURCE_HASH || '';
     const staticServer = window.STATIC_RESOURCE_PATH || '';
 
     navigator.serviceWorker.register(`/sw.js?t=${t}&staticServer=${staticServer}`, {
         scope: '/'
-            }).then(function(registration) {
+    }).then(registration => {
         console.log('SW registered: ', registration);
     }).catch(err => {
         console.log('SW registration failed: ', err);
     });
-        } else {
+}
+
+function unregister() {
     if (isHttps) {
-                navigator.serviceWorker.getRegistrations().then(function(registrations) {
+        navigator.serviceWorker.getRegistrations().then(registrations => {
             for (let registration of registrations) {
                 registration.unregister().then(result => {
                     console.log('SW unregisted: ', result);
@@ -26,7 +27,24 @@ window.addEventListener('load', function() {
             }
         });
     }
+}
+
+window.addEventListener('load', function() {
+    if ('serviceWorker' in navigator && isHttps) {
+        $.ajax({
+            url: '//m.yohobuy.com/api/switch',
+            dataType: 'jsonp',
+            cache: false,
+            success(res) {
+                const usePwa = isHttps && res && res.usePwa;
+
+                if (usePwa) {
+                    register();
+                } else {
+                    unregister();
+                }
             }
+        });
     }
 });