Implement authentication and access control

client/menu.js

@@ -6,26 +6,35 @@ const menu = {
   view: vnode => {
     const active = { [vnode.attrs.page]: "active" };
 
-    return m(
-      "nav",
-      m("ul", [
+    let tabs = [];
+    if (window.authorizer.hasAccess("devices", 1))
+      tabs.push(
         m(
           "li",
           { class: active["overview"] },
           m("a", { href: "#!/overview" }, "Overview")
-        ),
+        )
+      );
+
+    if (window.authorizer.hasAccess("devices", 2))
+      tabs.push(
         m(
           "li",
           { class: active["devices"] },
           m("a", { href: "#!/devices" }, "Devices")
-        ),
+        )
+      );
+
+    if (window.authorizer.hasAccess("faults", 2))
+      tabs.push(
         m(
           "li",
           { class: active["faults"] },
           m("a", { href: "#!/faults" }, "Faults")
         )
-      ])
-    );
+      );
+
+    return m("nav", m("ul", tabs));
   }
 };