working on user settings

Signed-off-by: Stephan Richter <s.richter@srsoftware.de>

de.srsoftware.oidc.web/src/main/resources/en/user.js

@@ -1,11 +1,27 @@
-
+var user = null;
 async function handleUser(response){
     if (response.status == UNAUTHORIZED) {
         window.location.href = 'login.html?return_to='+encodeURI(window.location.href);
         return;
     }
-    var user = await response.json();
-    // TODO: load navigation
+    if (response.ok){
+        user = await response.json();
+        fetch(web+"/navigation.html").then(handleNavigation);
+    }
+}
+
+async function handleNavigation(response){
+    if (response.ok){
+        var content = await response.text();
+        var nav = document.getElementsByTagName('nav')[0];
+        nav.innerHTML = content;
+        var links = nav.getElementsByTagName('a');
+        for (var index = 0; index < links.length; index++){
+            var link = links[index];
+            var clazz = link.hasAttribute('class') ? link.getAttribute("class") : null;
+            if (clazz != null && !user.permissions.includes(clazz)) nav.removeChild(link);
+        }
+    }
 }
 
 fetch(api+"/user",{method:'POST'}).then(handleUser);