From 769cadedd5e03536d4ffdfd148db78f90ee262d7 Mon Sep 17 00:00:00 2001
From: Adrienne Rio <adrienne@deriv.com>
Date: Mon, 9 Dec 2024 16:58:51 +0800
Subject: [PATCH] chore: used oauth2logout as logout function

---
 src/javascript/_common/auth.js  | 42 +++++++++++++++++++++++++++++++--
 src/javascript/app/base/page.js |  5 +++-
 2 files changed, 44 insertions(+), 3 deletions(-)

diff --git a/src/javascript/_common/auth.js b/src/javascript/_common/auth.js
index 41c4d303068..baf79d33fac 100644
--- a/src/javascript/_common/auth.js
+++ b/src/javascript/_common/auth.js
@@ -7,7 +7,7 @@ const {
 } = require('@deriv-com/utils');
 const Cookies = require('js-cookie');
 const requestOidcAuthentication = require('@deriv-com/auth-client').requestOidcAuthentication;
-const handlePostLogout = require('@deriv-com/analytics').handlePostLogout;
+const OAuth2Logout = require('@deriv-com/auth-client').OAuth2Logout;
 const Analytics = require('./analytics');
 
 export const DEFAULT_OAUTH_LOGOUT_URL = 'https://oauth.deriv.com/oauth2/sessions/logout';
@@ -79,10 +79,48 @@ export const isOAuth2Enabled = () => {
 };
 
 export const getLogoutHandler = onWSLogoutAndRedirect => {
-    const oAuth2Logout = handlePostLogout(onWSLogoutAndRedirect);
+    const oAuth2Logout = OAuth2Logout(onWSLogoutAndRedirect);
     return oAuth2Logout;
 };
 
+export const requestSingleLogout = async (onWSLogoutAndRedirect) => {
+    const _requestSingleLogout = async () => {
+        const isLoggedOutCookie = Cookies.get('logged_state') === 'false';
+        const clientAccounts = JSON.parse(localStorage.getItem('client.accounts') || '{}');
+        const isClientAccountsPopulated = Object.keys(clientAccounts).length > 0;
+        const isAuthEnabled = isOAuth2Enabled();
+        const isCallbackPage = window.location.pathname.includes('callback');
+        const isEndpointPage = window.location.pathname.includes('endpoint');
+
+        if (isLoggedOutCookie && isClientAccountsPopulated && isAuthEnabled && !isCallbackPage && !isEndpointPage) {
+            await getLogoutHandler(onWSLogoutAndRedirect)
+        }
+    };
+
+    const isGrowthbookLoaded = Analytics.isGrowthbookLoaded();
+    if (!isGrowthbookLoaded) {
+        let retryInterval = 0;
+        // this interval is to check if Growthbook is already initialised.
+        // If not, keep checking it (max 10 times) and SSO if conditions are met
+        const interval = setInterval(() => {
+            if (retryInterval > 10) {
+                clearInterval(interval);
+            } else {
+                const isLoaded = Analytics.isGrowthbookLoaded();
+                if (isLoaded) {
+                    _requestSingleLogout();
+                    clearInterval(interval);
+                } else {
+                    retryInterval += 1;
+                }
+            }
+        }, 500);
+    } else {
+        _requestSingleLogout();
+    }
+};
+
+
 export const requestSingleSignOn = async () => {
     const _requestSingleSignOn = async () => {
         // if we have previously logged in,
diff --git a/src/javascript/app/base/page.js b/src/javascript/app/base/page.js
index 89136eab72a..45ae4e30770 100644
--- a/src/javascript/app/base/page.js
+++ b/src/javascript/app/base/page.js
@@ -22,7 +22,7 @@ const scrollToTop      = require('../../_common/scroll').scrollToTop;
 const toISOFormat      = require('../../_common/string_util').toISOFormat;
 const Url              = require('../../_common/url');
 const Analytics        = require('../../_common/analytics');
-const { requestSingleSignOn } = require('../../_common/auth');
+const { requestSingleSignOn, requestSingleLogout } = require('../../_common/auth');
 const Chat             = require('../../_common/chat.js').default;
 const createElement    = require('../../_common/utility').createElement;
 const isLoginPages     = require('../../_common/utility').isLoginPages;
@@ -101,7 +101,10 @@ const Page = (() => {
             updateLinksURL('#content');
         } else {
             init();
+            // if the user has logged in previously, silent login
             requestSingleSignOn();
+            // if the user has logged out previously, silent logout
+            requestSingleLogout(Client.sendLogoutRequest);
             if (!isLoginPages()) {
                 Language.setCookie(Language.urlLang());
                 const url_query_strings = Url.paramsHash();