Add role checks (#21)

* Add role checks

* Remove moved Roles enum

src/components/Contexts/UserContext.jsx

@@ -1,12 +1,15 @@
 import React, { useContext, useEffect, useState } from "react";
 import auth from "../../services/auth";
 import getTimerWorker from "../../services/timer";
+import { parsePayload } from "../../utils/jwt";
+import { getGroups } from "../../utils/roles";
 
 const UserContext = React.createContext();
 
 export const UserProvider = ({ children }) => {
   const [fetching, setFetching] = useState(false);
   const [token, setToken] = useState(null);
+  const [groups, setGroups] = useState(null);
   const [error, setError] = useState(null);
   let timer;
 
@@ -15,13 +18,7 @@ export const UserProvider = ({ children }) => {
       if (!localStorage) return;
       const t = JSON.parse(localStorage.getItem("token"));
       if (!t) return;
-      if (
-        !t.idToken ||
-        !t.idToken.jwtToken ||
-        !t.idToken.payload ||
-        !t.idToken.payload.exp
-      )
-        throw new Error("Invalid token");
+      if (!t.idToken || !t.idToken.jwtToken) throw new Error("Invalid token");
       setToken(t);
     } catch (e) {
       document.location = signOut();
@@ -45,7 +42,12 @@ export const UserProvider = ({ children }) => {
   };
 
   const startSessionTimer = () => {
-    const duration = 1000 * token.idToken.payload.exp - new Date().getTime();
+    if (!token || !token.idToken || !token.idToken.jwtToken) {
+      throw new Error("No id token");
+    }
+    const payload = parsePayload(token.idToken.jwtToken);
+    if (!payload || !payload.exp) throw new Error("Bad id token payload");
+    const duration = 1000 * payload.exp - new Date().getTime();
     if (!timer) {
       timer = getTimerWorker();
       timer.onMessage(async (e) => {
@@ -71,6 +73,7 @@ export const UserProvider = ({ children }) => {
         if (!t || t.error) throw new Error("Unable to refresh token");
       }
 
+      setGroups(getGroups(idToken));
       startSessionTimer();
     } catch (e) {
       setError(`Verify error. ${e.message}`);
@@ -103,6 +106,7 @@ export const UserProvider = ({ children }) => {
   };
 
   const signOut = () => {
+    setGroups(null);
     setToken(null);
     if (localStorage) {
       localStorage.removeItem("token");
@@ -149,6 +153,7 @@ export const UserProvider = ({ children }) => {
       value={{
         fetching,
         token,
+        groups,
         error,
         setError,
         signIn,