[MM-24451] Handle setting previousVersion on logout and clearing data (#4205)

* Handle setting previousVersion on login and clearing data

* Fix unused import error

* Update test

* Just add previous version on logout

app/init/global_event_handler.js

@@ -280,6 +280,7 @@ class GlobalEventHandler {
                         app: {
                             build: DeviceInfo.getBuildNumber(),
                             version: DeviceInfo.getVersion(),
+                            previousVersion: state.app?.previousVersion || DeviceInfo.getVersion(),
                         },
                     },
                 },

app/store/utils.js

@@ -2,7 +2,6 @@
 // See LICENSE.txt for license information.
 
 import merge from 'deepmerge';
-import DeviceInfo from 'react-native-device-info';
 
 function transformFromSet(incoming) {
     const state = {...incoming};
@@ -67,6 +66,7 @@ export function waitForHydration(store, callback) {
 }
 
 export function getStateForReset(initialState, currentState) {
+    const {app} = currentState;
     const {currentUserId} = currentState.entities.users;
     const currentUserProfile = currentState.entities.users.profiles[currentUserId];
     const {currentTeamId} = currentState.entities.teams;
@@ -78,10 +78,7 @@ export function getStateForReset(initialState, currentState) {
     });
 
     const resetState = merge(initialState, {
-        app: {
-            build: DeviceInfo.getBuildNumber(),
-            version: DeviceInfo.getVersion(),
-        },
+        app,
         entities: {
             users: {
                 currentUserId,

app/store/utils.test.js

@@ -20,6 +20,11 @@ describe('getStateForReset', () => {
     const otherUserId = 'other-user-id';
     const currentTeamId = 'current-team-id';
     const currentState = {
+        app: {
+            build: 'build',
+            version: 'version',
+            previousVersion: 'previousVersion',
+        },
         entities: {
             users: {
                 currentUserId,
@@ -76,4 +81,10 @@ describe('getStateForReset', () => {
         expect(themeKeys.length).not.toEqual(0);
         expect(themeKeys.length).toEqual(preferenceKeys.length);
     });
+
+    it('should keep app', () => {
+        const resetState = getStateForReset(initialState, currentState);
+        const {app} = resetState;
+        expect(app).toStrictEqual(currentState.app);
+    });
 });