Add language routing

server/boot/home.js

@@ -1,4 +1,5 @@
 import { defaultProfileImage } from '../../common/utils/constantStrings.json';
+import supportedLanguages from '../../common/utils/supported-languages';
 
 const message =
   'Learn to Code and Help Nonprofits';
@@ -6,24 +7,37 @@ const message =
 module.exports = function(app) {
   var router = app.loopback.Router();
   router.get('/', addDefaultImage, index);
-
+  app.use(
+      '/:lang',
+      (req, res, next) => {
+        // add url language to request for all routers
+        req._urlLang = req.params.lang;
+        next();
+      },
+      router
+    );
   app.use(router);
 
   function addDefaultImage(req, res, next) {
     if (!req.user || req.user.picture) {
       return next();
     }
-    req.user.picture = defaultProfileImage;
-    return req.user.save(function(err) {
-      if (err) { return next(err); }
-      return next();
-    });
+    return req.user.update$({ picture: defaultProfileImage })
+      .subscribe(
+        () => next(),
+        next
+      );
   }
 
-  function index(req, res) {
+  function index(req, res, next) {
+    if (!supportedLanguages[req._urlLang]) {
+      return next();
+    }
+
     if (req.user) {
       return res.redirect('/challenges/current-challenge');
     }
+
     return res.render('home', { title: message });
   }
 };