From 5e2e9dd1399f1e07cdac0c1cf3f809f26c67c530 Mon Sep 17 00:00:00 2001
From: Rajeh Taher <rajeh@reforward.dev>
Date: Fri, 22 Apr 2022 00:15:00 +0300
Subject: [PATCH] Fix: Cannot read properties of undefined (reading 'features')
 // original: (#1407) (#1410)

* Fix: Cannot read properties of undefined (reading 'features') (#1407)

* Fix: Cannot read properties of undefined (reading 'features')

Find MD backend without features

* Fix for tests

* Update Client.js

* Update LegacySessionAuth.js

Co-authored-by: Shir Serlui <70711723+shirser121@users.noreply.github.com>
---
 src/Client.js                           | 2 +-
 src/authStrategies/LegacySessionAuth.js | 4 ++--
 src/util/Injected.js                    | 8 ++++----
 3 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/src/Client.js b/src/Client.js
index b8a45a2..9d35edd 100644
--- a/src/Client.js
+++ b/src/Client.js
@@ -733,7 +733,7 @@ class Client extends EventEmitter {
         const couldSet = await this.pupPage.evaluate(async displayName => {
             if(!window.Store.Conn.canSetMyPushname()) return false;
 
-            if(window.Store.Features.features.MD_BACKEND) {
+            if(window.Store.MDBackend) {
                 // TODO
                 return false;
             } else {
diff --git a/src/authStrategies/LegacySessionAuth.js b/src/authStrategies/LegacySessionAuth.js
index 8dfe406..dd09f7b 100644
--- a/src/authStrategies/LegacySessionAuth.js
+++ b/src/authStrategies/LegacySessionAuth.js
@@ -51,7 +51,7 @@ class LegacySessionAuth extends BaseAuthStrategy {
 
     async getAuthEventPayload() {
         const isMD = await this.client.pupPage.evaluate(() => {
-            return window.Store.Features.features.MD_BACKEND;
+            return window.Store.MDBackend;
         });
 
         if(isMD) throw new Error('Authenticating via JSON session is not supported for MultiDevice-enabled WhatsApp accounts.');
@@ -69,4 +69,4 @@ class LegacySessionAuth extends BaseAuthStrategy {
     }
 }
 
-module.exports = LegacySessionAuth;
\ No newline at end of file
+module.exports = LegacySessionAuth;
diff --git a/src/util/Injected.js b/src/util/Injected.js
index 8addf6c..ca18070 100644
--- a/src/util/Injected.js
+++ b/src/util/Injected.js
@@ -13,7 +13,7 @@ exports.ExposeStore = (moduleRaidStr) => {
     window.Store.Cmd = window.mR.findModule('Cmd')[0].Cmd;
     window.Store.CryptoLib = window.mR.findModule('decryptE2EMedia')[0];
     window.Store.DownloadManager = window.mR.findModule('downloadManager')[0].downloadManager;
-    window.Store.Features = window.mR.findModule('FEATURE_CHANGE_EVENT')[0].GK;
+    window.Store.MDBackend = window.mR.findModule('isMDBackend')[0].isMDBackend();
     window.Store.GroupMetadata = window.mR.findModule((module) => module.default && module.default.handlePendingInvite)[0].default;
     window.Store.Invite = window.mR.findModule('sendJoinGroupViaInvite')[0];
     window.Store.InviteInfo = window.mR.findModule('sendQueryGroupInvite')[0];
@@ -159,7 +159,7 @@ exports.LoadUtils = () => {
             delete options.linkPreview;
 
             // Not supported yet by WhatsApp Web on MD
-            if(!window.Store.Features.features.MD_BACKEND) {
+            if(!window.Store.MDBackend) {
                 const link = window.Store.Validators.findLink(content);
                 if (link) {
                     const preview = await window.Store.Wap.queryLinkPreview(link.url);
@@ -211,7 +211,7 @@ exports.LoadUtils = () => {
         }
 
         const meUser = window.Store.User.getMaybeMeUser();
-        const isMD = window.Store.Features.features.MD_BACKEND;
+        const isMD = window.Store.MDBackend;
 
         const newMsgId = new window.Store.MsgKey({
             from: meUser,
@@ -512,7 +512,7 @@ exports.LoadUtils = () => {
     };
 
     window.WWebJS.sendChatstate = async (state, chatId) => {
-        if (window.Store.Features.features.MD_BACKEND) {
+        if (window.Store.MDBackend) {
             chatId = window.Store.WidFactory.createWid(chatId);
         }
         switch (state) {