PLT-6492 Use new cookie to determine if user is logged in (#6317)

* Use new cookie to determine if user is logged in

* Add temporary code for 3.9 to prevent forced re-login

webapp/actions/global_actions.jsx

@@ -457,7 +457,7 @@ export function clientLogout(redirectTo = '/') {
     ChannelStore.clear();
     stopPeriodicStatusUpdates();
     WebsocketActions.close();
-    localStorage.removeItem('currentUserId');
+    document.cookie = 'MMUSERID=;expires=Thu, 01 Jan 1970 00:00:01 GMT;';
     window.location.href = redirectTo;
 }
 

webapp/actions/user_actions.jsx

@@ -51,8 +51,6 @@ import {getTeamMembersByIds, getMyTeamMembers} from 'mattermost-redux/actions/te
 export function loadMe(callback) {
     loadMeRedux()(dispatch, getState).then(
         () => {
-            localStorage.setItem('currentUserId', UserStore.getCurrentId());
-
             if (callback) {
                 callback();
             }
@@ -741,7 +739,6 @@ export function webLogin(loginId, password, token, success, error) {
     login(loginId, password, token)(dispatch, getState).then(
         (ok) => {
             if (ok && success) {
-                localStorage.setItem('currentUserId', UserStore.getCurrentId());
                 success();
             } else if (!ok && error) {
                 const serverError = getState().requests.users.login.error;

webapp/root.jsx

@@ -13,7 +13,6 @@ import PDFJS from 'pdfjs-dist';
 import * as Websockets from 'actions/websocket_actions.jsx';
 import {loadMeAndConfig} from 'actions/user_actions.jsx';
 import ChannelStore from 'stores/channel_store.jsx';
-import UserStore from 'stores/user_store.jsx';
 import * as I18n from 'i18n/i18n.jsx';
 
 // Import our styles
@@ -61,9 +60,7 @@ function preRenderSetup(callwhendone) {
 
     setUrl(window.location.origin);
 
-    const currentUserId = localStorage.getItem('currentUserId');
-
-    if (currentUserId) {
+    if (document.cookie.indexOf('MMUSERID=') > -1) {
         loadMeAndConfig(() => d1.resolve());
     } else {
         getClientConfig()(store.dispatch, store.getState).then(
@@ -85,7 +82,7 @@ function preRenderSetup(callwhendone) {
          () => {
              // Turn off to prevent getting stuck in a loop
              $(window).off('beforeunload');
-             if (UserStore.getCurrentUser()) {
+             if (document.cookie.indexOf('MMUSERID=') > -1) {
                  viewChannel('', ChannelStore.getCurrentId() || '')(dispatch, getState);
              }
              Websockets.close();

webapp/store/index.js

@@ -77,6 +77,9 @@ export default function configureStore(initialState) {
 
                     persistor.purge();
 
+                    document.cookie = 'MMUSERID=;expires=Thu, 01 Jan 1970 00:00:01 GMT;';
+                    window.location.href = '/';
+
                     store.dispatch(batchActions([
                         {
                             type: General.OFFLINE_STORE_RESET,
@@ -84,9 +87,6 @@ export default function configureStore(initialState) {
                         }
                     ]));
 
-                    localStorage.removeItem('currentUserId');
-                    window.location.href = '/';
-
                     setTimeout(() => {
                         purging = false;
                     }, 500);