Proper handling of logout and session expired home page.

src/containers/App/App.js

@@ -11,11 +11,9 @@ import { loggedInUserIdSelector, accessTokenSelector } from '../../redux/selecto
 import { fetchUserIfNeeded } from '../../redux/modules/users.js';
 import { fetchUserStatus } from '../../redux/selectors/users.js';
 import { isTokenValid, isTokenInNeedOfRefreshment } from '../../redux/helpers/token';
-import { addNotification } from '../../redux/modules/notifications.js';
 import { logout, refresh } from '../../redux/modules/auth.js';
 import { resourceStatus } from '../../redux/helpers/resourceManager';
 import { suspendAbortPendingRequestsOptimization } from '../../pages/routes.js';
-import { SESSION_EXPIRED_MESSAGE } from '../../redux/helpers/api/tools.js';
 import withRouter, { withRouterProps } from '../../helpers/withRouter.js';
 
 import './siscodex.css';
@@ -69,20 +67,18 @@ class App extends Component {
    * must be checked more often.
    */
   checkAuthentication = () => {
-    const { isLoggedIn, accessToken, refreshToken, logout, addNotification } = this.props;
+    const { isLoggedIn, accessToken, refreshToken, logout } = this.props;
 
     const token = accessToken ? accessToken.toJS() : null;
     if (isLoggedIn) {
       if (!isTokenValid(token)) {
         logout();
-        addNotification(SESSION_EXPIRED_MESSAGE, false);
       } else if (isTokenInNeedOfRefreshment(token) && !this.isRefreshingToken) {
         suspendAbortPendingRequestsOptimization();
         this.isRefreshingToken = true;
         refreshToken()
           .catch(() => {
             logout();
-            addNotification(SESSION_EXPIRED_MESSAGE, false);
           })
           .then(() => {
             this.isRefreshingToken = false;
@@ -104,7 +100,6 @@ App.propTypes = {
   loadAsync: PropTypes.func.isRequired,
   refreshToken: PropTypes.func.isRequired,
   logout: PropTypes.func.isRequired,
-  addNotification: PropTypes.func.isRequired,
   location: withRouterProps.location,
 };
 
@@ -123,7 +118,6 @@ export default withRouter(
       loadAsync: userId => App.loadAsync({}, dispatch, { userId }),
       refreshToken: () => dispatch(refresh()),
       logout: () => dispatch(logout()),
-      addNotification: (msg, successful) => dispatch(addNotification(msg, successful)),
     })
   )(App)
 );

src/locales/cs.json

@@ -148,6 +148,8 @@
   "app.homepage.termsPage": "Správa semestrů a jejich souvisejících dat (kdy jsou aktivní pro studenty a učitele).",
   "app.homepage.title": "Rozšíření SIS-CodEx",
   "app.homepage.userPage": "Stránka s osobními údaji umožnujě synchronizovat uživatelský profil (jméno, tituly, email) s daty ze SISu.",
+  "app.homepage.userSessionExpired": "Vaše uživatelská relace vypršela",
+  "app.homepage.userSessionExpiredInfo": "Musíte inicializovat novou relaci opětovným vstupem do této aplikace z ReCodExu.",
   "app.localizedTexts.validation.noLocalizedText": "Prosíme povolte alespoň jednu záložku s lokalizovanými texty.",
   "app.notifications.hideAll": "Pouze nové notifikace",
   "app.notifications.showAll": "Zobrazit {count, plural, one {jednu starou notifikaci} two {dvě staré notifikace} other {# starých notifikací}}",

src/locales/en.json

@@ -148,6 +148,8 @@
   "app.homepage.termsPage": "Management of terms and their related dates (when they are active for students and teachers).",
   "app.homepage.title": "SiS-CodEx Extension",
   "app.homepage.userPage": "The personal data integration page allows updating ReCodEx user profile (name, titles, email) using data from SIS.",
+  "app.homepage.userSessionExpired": "Your user session has expired",
+  "app.homepage.userSessionExpiredInfo": "You need to initialize a new session by re-entering this application from ReCodEx.",
   "app.localizedTexts.validation.noLocalizedText": "Please enable at least one tab of localized texts.",
   "app.notifications.hideAll": "Only new notifications",
   "app.notifications.showAll": "Show {count, plural, one {old notification} two {two old notifications} other {all # notifications}}",
@@ -265,4 +267,4 @@
   "generic.operationFailed": "The operation has failed",
   "generic.reset": "Reset",
   "generic.save": "Save"
-}
+}

src/pages/Home/Home.js

@@ -7,6 +7,7 @@ import { Row, Col } from 'react-bootstrap';
 import { Link } from 'react-router-dom';
 
 import Page from '../../components/layout/Page';
+import PageContent from '../../components/layout/PageContent';
 import Icon, {
   GroupFocusIcon,
   HomeIcon,
@@ -88,6 +89,33 @@ class Home extends Component {
       links: { USER_URI, TERMS_URI, GROUPS_STUDENT_URI, GROUPS_TEACHER_URI, GROUPS_SUPERADMIN_URI },
     } = this.props;
 
+    if (!loggedInUser && !token) {
+      return (
+        <PageContent
+          icon={<HomeIcon />}
+          title={<FormattedMessage id="app.homepage.title" defaultMessage="SiS-CodEx Extension" />}
+          windowTitle={<FormattedMessage id="app.homepage.title" defaultMessage="SiS-CodEx Extension" />}>
+          <Callout variant="warning" className="my-3">
+            <h4>
+              <FormattedMessage id="app.homepage.userSessionExpired" defaultMessage="Your user session has expired" />
+            </h4>
+            <p>
+              <FormattedMessage
+                id="app.homepage.userSessionExpiredInfo"
+                defaultMessage="You need to initialize a new session by re-entering this application from ReCodEx."
+              />
+            </p>
+            <p>
+              <a href={getReturnUrl()}>
+                <ReturnIcon gapRight />
+                <FormattedMessage id="app.homepage.returnToReCodEx" defaultMessage="Return to ReCodEx..." />
+              </a>
+            </p>
+          </Callout>
+        </PageContent>
+      );
+    }
+
     return (
       <Page
         resource={loggedInUser}

src/pages/routes.js

@@ -10,7 +10,7 @@ import Home from './Home';
 import Terms from './Terms';
 import User from './User';
 
-import { createLoginLinkWithRedirect, abortAllPendingRequests } from '../redux/helpers/api/tools.js';
+import { abortAllPendingRequests } from '../redux/helpers/api/tools.js';
 import { API_BASE, URL_PATH_PREFIX } from '../helpers/config.js';
 import withRouter from '../helpers/withRouter.js';
 
@@ -83,7 +83,7 @@ const routesDescriptors = [
 
 const getRedirect = (routeObj, urlPath, isLoggedIn) => {
   if (routeObj.auth !== undefined && routeObj.auth !== isLoggedIn) {
-    return routeObj.auth ? createLoginLinkWithRedirect(urlPath) : getLinks().DASHBOARD_URI;
+    return getLinks().HOME_URI;
   } else {
     return null;
   }

src/redux/helpers/api/tools.js

@@ -1,11 +1,10 @@
 import statusCode from 'statuscode';
 import { flatten } from 'flat';
-import { Buffer } from 'buffer';
 
 import { addNotification } from '../../modules/notifications.js';
 import { newPendingFetchOperation, completedFetchOperation } from '../../modules/app.js';
 import { isTokenValid, decode } from '../../helpers/token';
-import { API_BASE, URL_PATH_PREFIX } from '../../../helpers/config.js';
+import { API_BASE } from '../../../helpers/config.js';
 import { actionTypes as authActionTypes } from '../../modules/authTypes.js';
 import { canUseDOM } from '../../../helpers/common.js';
 
@@ -134,15 +133,6 @@ export const logout = () => ({
   type: authActionTypes.LOGOUT,
 });
 
-export const SESSION_EXPIRED_MESSAGE =
-  'Your session expired and you were automatically logged out of the ReCodEx system.';
-export const LOGIN_URI_PREFIX = 'login';
-
-export const createLoginLinkWithRedirect = redirLocation => {
-  const redirBase64 = Buffer.from(redirLocation).toString('base64');
-  return `${URL_PATH_PREFIX}/${LOGIN_URI_PREFIX}/${encodeURIComponent(redirBase64)}`;
-};
-
 /**
  * Create a request and setup the processing of the response.
  * @param {Object} request The request settings and data
@@ -170,7 +160,6 @@ export const createApiCallPromise = (
       if (res.status === 401 && !isTokenValid(decode(accessToken)) && dispatch) {
         abortAllPendingRequests();
         dispatch(logout());
-        dispatch(addNotification(SESSION_EXPIRED_MESSAGE, false));
         return Promise.reject(res);
       }
 
@@ -184,7 +173,7 @@ export const createApiCallPromise = (
 };
 
 /**
- * A specific error means that there is a problem with the Internet connectin or the server is down.
+ * A specific error means that there is a problem with the Internet connecting or the server is down.
  * @param {Object} err The error description
  * @param {Function} dispatch
  */