[PM-6511] New i18n for angular (#8122)

* Use state provider to store preferred language

* migrate preferred language

* Use new i18n provider to get LOCAL_ID

* Fix preloaded english i18n

This is a mock service that forces english translations, it doesn't need the i18n interface that allows changing of locales.

* PR improvements

* Fixup merge

apps/browser/src/background/main.background.ts

@@ -195,12 +195,12 @@ import { BrowserStateService as StateServiceAbstraction } from "../platform/serv
 import { BrowserConfigService } from "../platform/services/browser-config.service";
 import { BrowserCryptoService } from "../platform/services/browser-crypto.service";
 import { BrowserEnvironmentService } from "../platform/services/browser-environment.service";
-import { BrowserI18nService } from "../platform/services/browser-i18n.service";
 import BrowserLocalStorageService from "../platform/services/browser-local-storage.service";
 import BrowserMessagingPrivateModeBackgroundService from "../platform/services/browser-messaging-private-mode-background.service";
 import BrowserMessagingService from "../platform/services/browser-messaging.service";
 import BrowserPlatformUtilsService from "../platform/services/browser-platform-utils.service";
 import { BrowserStateService } from "../platform/services/browser-state.service";
+import I18nService from "../platform/services/i18n.service";
 import { LocalBackedSessionStorageService } from "../platform/services/local-backed-session-storage.service";
 import { BackgroundDerivedStateProvider } from "../platform/state/background-derived-state.provider";
 import { BackgroundMemoryStorageService } from "../platform/storage/background-memory-storage.service";
@@ -462,7 +462,7 @@ export default class MainBackground {
       },
       self,
     );
-    this.i18nService = new BrowserI18nService(BrowserApi.getUILanguage(), this.stateService);
+    this.i18nService = new I18nService(BrowserApi.getUILanguage(), this.globalStateProvider);
     this.cryptoService = new BrowserCryptoService(
       this.keyGenerationService,
       this.cryptoFunctionService,
@@ -969,7 +969,7 @@ export default class MainBackground {
     await this.stateService.init();
 
     await this.vaultTimeoutService.init(true);
-    await (this.i18nService as BrowserI18nService).init();
+    await (this.i18nService as I18nService).init();
     await (this.eventUploadService as EventUploadService).init(true);
     await this.runtimeBackground.init();
     await this.notificationBackground.init();

apps/browser/src/platform/background/service-factories/i18n-service.factory.ts

@@ -4,6 +4,10 @@ import { I18nService as BaseI18nService } from "@bitwarden/common/platform/servi
 import I18nService from "../../services/i18n.service";
 
 import { FactoryOptions, CachedServices, factory } from "./factory-options";
+import {
+  GlobalStateProviderInitOptions,
+  globalStateProviderFactory,
+} from "./global-state-provider.factory";
 
 type I18nServiceFactoryOptions = FactoryOptions & {
   i18nServiceOptions: {
@@ -11,7 +15,7 @@ type I18nServiceFactoryOptions = FactoryOptions & {
   };
 };
 
-export type I18nServiceInitOptions = I18nServiceFactoryOptions;
+export type I18nServiceInitOptions = I18nServiceFactoryOptions & GlobalStateProviderInitOptions;
 
 export async function i18nServiceFactory(
   cache: { i18nService?: AbstractI18nService } & CachedServices,
@@ -21,7 +25,11 @@ export async function i18nServiceFactory(
     cache,
     "i18nService",
     opts,
-    () => new I18nService(opts.i18nServiceOptions.systemLanguage),
+    async () =>
+      new I18nService(
+        opts.i18nServiceOptions.systemLanguage,
+        await globalStateProviderFactory(cache, opts),
+      ),
   );
   if (!(service as BaseI18nService as any).inited) {
     await (service as BaseI18nService).init();

apps/browser/src/platform/services/browser-i18n.service.ts

@@ -1,20 +0,0 @@
-import { ReplaySubject } from "rxjs";
-
-import { StateService } from "@bitwarden/common/platform/abstractions/state.service";
-
-import { browserSession, sessionSync } from "../decorators/session-sync-observable";
-
-import I18nService from "./i18n.service";
-
-@browserSession
-export class BrowserI18nService extends I18nService {
-  @sessionSync({ initializer: (s: string) => s })
-  protected _locale: ReplaySubject<string>;
-
-  constructor(
-    systemLanguage: string,
-    private stateService: StateService,
-  ) {
-    super(systemLanguage);
-  }
-}

apps/browser/src/platform/services/i18n.service.ts

@@ -1,12 +1,18 @@
 import { I18nService as BaseI18nService } from "@bitwarden/common/platform/services/i18n.service";
+import { GlobalStateProvider } from "@bitwarden/common/platform/state";
 
 export default class I18nService extends BaseI18nService {
-  constructor(systemLanguage: string) {
-    super(systemLanguage, null, async (formattedLocale: string) => {
-      // Deprecated
-      const file = await fetch(this.localesDirectory + formattedLocale + "/messages.json");
-      return await file.json();
-    });
+  constructor(systemLanguage: string, globalStateProvider: GlobalStateProvider) {
+    super(
+      systemLanguage,
+      null,
+      async (formattedLocale: string) => {
+        // Deprecated
+        const file = await fetch(this.localesDirectory + formattedLocale + "/messages.json");
+        return await file.json();
+      },
+      globalStateProvider,
+    );
 
     // Please leave 'en' where it is, as it's our fallback language in case no translation can be found
     this.supportedTranslationLocales = [

apps/browser/src/popup/services/services.module.ts

@@ -1,4 +1,4 @@
-import { APP_INITIALIZER, LOCALE_ID, NgModule, NgZone } from "@angular/core";
+import { APP_INITIALIZER, NgModule, NgZone } from "@angular/core";
 
 import { UnauthGuard as BaseUnauthGuardService } from "@bitwarden/angular/auth/guards";
 import { ThemingService } from "@bitwarden/angular/platform/services/theming/theming.service";
@@ -60,10 +60,7 @@ import {
 } from "@bitwarden/common/platform/abstractions/log.service";
 import { MessagingService } from "@bitwarden/common/platform/abstractions/messaging.service";
 import { PlatformUtilsService } from "@bitwarden/common/platform/abstractions/platform-utils.service";
-import {
-  StateService as BaseStateServiceAbstraction,
-  StateService,
-} from "@bitwarden/common/platform/abstractions/state.service";
+import { StateService as BaseStateServiceAbstraction } from "@bitwarden/common/platform/abstractions/state.service";
 import {
   AbstractMemoryStorageService,
   AbstractStorageService,
@@ -75,7 +72,11 @@ import { ConsoleLogService } from "@bitwarden/common/platform/services/console-l
 import { ContainerService } from "@bitwarden/common/platform/services/container.service";
 import { MigrationRunner } from "@bitwarden/common/platform/services/migration-runner";
 import { WebCryptoFunctionService } from "@bitwarden/common/platform/services/web-crypto-function.service";
-import { DerivedStateProvider, StateProvider } from "@bitwarden/common/platform/state";
+import {
+  DerivedStateProvider,
+  GlobalStateProvider,
+  StateProvider,
+} from "@bitwarden/common/platform/state";
 import { SearchService } from "@bitwarden/common/services/search.service";
 import { PasswordGenerationServiceAbstraction } from "@bitwarden/common/tools/generator/password";
 import { UsernameGenerationServiceAbstraction } from "@bitwarden/common/tools/generator/username";
@@ -112,11 +113,11 @@ import { BrowserStateService as StateServiceAbstraction } from "../../platform/s
 import { BrowserConfigService } from "../../platform/services/browser-config.service";
 import { BrowserEnvironmentService } from "../../platform/services/browser-environment.service";
 import { BrowserFileDownloadService } from "../../platform/services/browser-file-download.service";
-import { BrowserI18nService } from "../../platform/services/browser-i18n.service";
 import BrowserLocalStorageService from "../../platform/services/browser-local-storage.service";
 import BrowserMessagingPrivateModePopupService from "../../platform/services/browser-messaging-private-mode-popup.service";
 import BrowserMessagingService from "../../platform/services/browser-messaging.service";
 import { BrowserStateService } from "../../platform/services/browser-state.service";
+import I18nService from "../../platform/services/i18n.service";
 import { ForegroundDerivedStateProvider } from "../../platform/state/foreground-derived-state.provider";
 import { ForegroundMemoryStorageService } from "../../platform/storage/foreground-memory-storage.service";
 import { BrowserSendService } from "../../services/browser-send.service";
@@ -158,11 +159,6 @@ function getBgService<T>(service: keyof MainBackground) {
     DebounceNavigationService,
     DialogService,
     PopupCloseWarningService,
-    {
-      provide: LOCALE_ID,
-      useFactory: () => getBgService<I18nServiceAbstraction>("i18nService")().translationLocale,
-      deps: [],
-    },
     {
       provide: APP_INITIALIZER,
       useFactory: (initService: InitService) => initService.init(),
@@ -254,10 +250,10 @@ function getBgService<T>(service: keyof MainBackground) {
     { provide: TokenService, useFactory: getBgService<TokenService>("tokenService"), deps: [] },
     {
       provide: I18nServiceAbstraction,
-      useFactory: (stateService: BrowserStateService) => {
-        return new BrowserI18nService(BrowserApi.getUILanguage(), stateService);
+      useFactory: (globalStateProvider: GlobalStateProvider) => {
+        return new I18nService(BrowserApi.getUILanguage(), globalStateProvider);
       },
-      deps: [StateService],
+      deps: [GlobalStateProvider],
     },
     {
       provide: CryptoService,

apps/cli/src/bw.ts

@@ -231,7 +231,6 @@ export class Main {
       p = path.join(process.env.HOME, ".config/Bitwarden CLI");
     }
 
-    this.i18nService = new I18nService("en", "./locales");
     this.platformUtilsService = new CliPlatformUtilsService(ClientType.Cli, packageJson);
     this.logService = new ConsoleLogService(
       this.platformUtilsService.isDev(),
@@ -270,6 +269,8 @@ export class Main {
       storageServiceProvider,
     );
 
+    this.i18nService = new I18nService("en", "./locales", this.globalStateProvider);
+
     this.singleUserStateProvider = new DefaultSingleUserStateProvider(
       storageServiceProvider,
       stateEventRegistrarService,
@@ -665,8 +666,7 @@ export class Main {
     await this.stateService.init();
     this.containerService.attachToGlobal(global);
     await this.environmentService.setUrlsFromStorage();
-    const locale = await this.stateService.getLocale();
-    await this.i18nService.init(locale);
+    await this.i18nService.init();
     this.twoFactorService.init();
     this.configService.init();
 

apps/cli/src/platform/services/i18n.service.ts

@@ -2,18 +2,28 @@ import * as fs from "fs";
 import * as path from "path";
 
 import { I18nService as BaseI18nService } from "@bitwarden/common/platform/services/i18n.service";
+import { GlobalStateProvider } from "@bitwarden/common/platform/state";
 
 export class I18nService extends BaseI18nService {
-  constructor(systemLanguage: string, localesDirectory: string) {
-    super(systemLanguage, localesDirectory, (formattedLocale: string) => {
-      const filePath = path.join(
-        __dirname,
-        this.localesDirectory + "/" + formattedLocale + "/messages.json",
-      );
-      const localesJson = fs.readFileSync(filePath, "utf8");
-      const locales = JSON.parse(localesJson.replace(/^\uFEFF/, "")); // strip the BOM
-      return Promise.resolve(locales);
-    });
+  constructor(
+    systemLanguage: string,
+    localesDirectory: string,
+    globalStateProvider: GlobalStateProvider,
+  ) {
+    super(
+      systemLanguage,
+      localesDirectory,
+      (formattedLocale: string) => {
+        const filePath = path.join(
+          __dirname,
+          this.localesDirectory + "/" + formattedLocale + "/messages.json",
+        );
+        const localesJson = fs.readFileSync(filePath, "utf8");
+        const locales = JSON.parse(localesJson.replace(/^\uFEFF/, "")); // strip the BOM
+        return Promise.resolve(locales);
+      },
+      globalStateProvider,
+    );
 
     this.supportedTranslationLocales = ["en"];
   }

apps/desktop/src/app/accounts/settings.component.ts

@@ -264,7 +264,7 @@ export class SettingsComponent implements OnInit {
       enableDuckDuckGoBrowserIntegration:
         await this.stateService.getEnableDuckDuckGoBrowserIntegration(),
       theme: await this.stateService.getTheme(),
-      locale: (await this.stateService.getLocale()) ?? null,
+      locale: await firstValueFrom(this.i18nService.locale$),
     };
     this.form.setValue(initialValues, { emitEvent: false });
 
@@ -553,7 +553,7 @@ export class SettingsComponent implements OnInit {
   }
 
   async saveLocale() {
-    await this.stateService.setLocale(this.form.value.locale);
+    await this.i18nService.setLocale(this.form.value.locale);
   }
 
   async saveTheme() {

apps/desktop/src/app/services/init.service.ts

@@ -52,8 +52,7 @@ export class InitService {
       // eslint-disable-next-line @typescript-eslint/no-floating-promises
       this.syncService.fullSync(true);
       await this.vaultTimeoutService.init(true);
-      const locale = await this.stateService.getLocale();
-      await (this.i18nService as I18nRendererService).init(locale);
+      await (this.i18nService as I18nRendererService).init();
       (this.eventUploadService as EventUploadService).init(true);
       this.twoFactorService.init();
       setTimeout(() => this.notificationsService.init(), 3000);

apps/desktop/src/app/services/services.module.ts

@@ -43,7 +43,7 @@ import { GlobalState } from "@bitwarden/common/platform/models/domain/global-sta
 import { MemoryStorageService } from "@bitwarden/common/platform/services/memory-storage.service";
 import { MigrationRunner } from "@bitwarden/common/platform/services/migration-runner";
 import { SystemService } from "@bitwarden/common/platform/services/system.service";
-import { StateProvider } from "@bitwarden/common/platform/state";
+import { GlobalStateProvider, StateProvider } from "@bitwarden/common/platform/state";
 // eslint-disable-next-line import/no-restricted-paths -- Implementation for memory storage
 import { MemoryStorageService as MemoryStorageServiceForStateProviders } from "@bitwarden/common/platform/state/storage/memory-storage.service";
 import { PasswordGenerationServiceAbstraction } from "@bitwarden/common/tools/generator/password";
@@ -104,7 +104,7 @@ const RELOAD_CALLBACK = new InjectionToken<() => any>("RELOAD_CALLBACK");
     {
       provide: I18nServiceAbstraction,
       useClass: I18nRendererService,
-      deps: [SYSTEM_LANGUAGE, LOCALES_DIRECTORY],
+      deps: [SYSTEM_LANGUAGE, LOCALES_DIRECTORY, GlobalStateProvider],
     },
     {
       provide: MessagingServiceAbstraction,

apps/desktop/src/main.ts

@@ -97,7 +97,6 @@ export class Main {
     }
 
     this.logService = new ElectronLogMainService(null, app.getPath("userData"));
-    this.i18nService = new I18nMainService("en", "./locales/");
 
     const storageDefaults: any = {};
     // Default vault timeout to "on restart", and action to "lock"
@@ -112,6 +111,8 @@ export class Main {
     );
     const globalStateProvider = new DefaultGlobalStateProvider(storageServiceProvider);
 
+    this.i18nService = new I18nMainService("en", "./locales/", globalStateProvider);
+
     const accountService = new AccountServiceImplementation(
       new NoopMessagingService(),
       this.logService,
@@ -218,8 +219,7 @@ export class Main {
     this.migrationRunner.run().then(
       async () => {
         await this.windowMain.init();
-        const locale = await this.stateService.getLocale();
-        await this.i18nService.init(locale != null ? locale : app.getLocale());
+        await this.i18nService.init();
         this.messagingMain.init();
         // FIXME: Verify that this floating promise is intentional. If it is, add an explanatory comment and ensure there is proper error handling.
         // eslint-disable-next-line @typescript-eslint/no-floating-promises

apps/desktop/src/platform/services/i18n.main.service.ts

@@ -1,14 +1,22 @@
 import * as fs from "fs";
 import * as path from "path";
 
-import { ipcMain } from "electron";
+import { app, ipcMain } from "electron";
 
 import { I18nService as BaseI18nService } from "@bitwarden/common/platform/services/i18n.service";
+import { GlobalStateProvider } from "@bitwarden/common/platform/state";
 
 export class I18nMainService extends BaseI18nService {
-  constructor(systemLanguage: string, localesDirectory: string) {
-    super(systemLanguage, localesDirectory, (formattedLocale: string) =>
-      this.readLanguageFile(formattedLocale),
+  constructor(
+    systemLanguage: string,
+    localesDirectory: string,
+    globalStateProvider: GlobalStateProvider,
+  ) {
+    super(
+      systemLanguage,
+      localesDirectory,
+      (formattedLocale: string) => this.readLanguageFile(formattedLocale),
+      globalStateProvider,
     );
 
     ipcMain.handle("getLanguageFile", async (event, formattedLocale: string) =>
@@ -76,6 +84,12 @@ export class I18nMainService extends BaseI18nService {
     ];
   }
 
+  override async init(): Promise<void> {
+    // Set system language to electron language
+    this.systemLanguage = app.getLocale();
+    await super.init();
+  }
+
   private readLanguageFile(formattedLocale: string): Promise<any> {
     // Check that the provided locale only contains letters and dashes and underscores to avoid possible path traversal
     if (!/^[a-zA-Z_-]+$/.test(formattedLocale)) {

apps/desktop/src/platform/services/i18n.renderer.service.ts

@@ -1,10 +1,20 @@
 import { I18nService as BaseI18nService } from "@bitwarden/common/platform/services/i18n.service";
+import { GlobalStateProvider } from "@bitwarden/common/platform/state";
 
 export class I18nRendererService extends BaseI18nService {
-  constructor(systemLanguage: string, localesDirectory: string) {
-    super(systemLanguage, localesDirectory, (formattedLocale: string) => {
-      return ipc.platform.getLanguageFile(formattedLocale);
-    });
+  constructor(
+    systemLanguage: string,
+    localesDirectory: string,
+    globalStateProvider: GlobalStateProvider,
+  ) {
+    super(
+      systemLanguage,
+      localesDirectory,
+      (formattedLocale: string) => {
+        return ipc.platform.getLanguageFile(formattedLocale);
+      },
+      globalStateProvider,
+    );
 
     // Please leave 'en' where it is, as it's our fallback language in case no translation can be found
     this.supportedTranslationLocales = [

apps/web/src/app/core/core.module.ts

@@ -29,6 +29,7 @@ import { MigrationBuilderService } from "@bitwarden/common/platform/services/mig
 import { MigrationRunner } from "@bitwarden/common/platform/services/migration-runner";
 /* eslint-disable import/no-restricted-paths -- Implementation for memory storage */
 import { StorageServiceProvider } from "@bitwarden/common/platform/services/storage-service.provider";
+import { GlobalStateProvider } from "@bitwarden/common/platform/state";
 import { MemoryStorageService as MemoryStorageServiceForStateProviders } from "@bitwarden/common/platform/state/storage/memory-storage.service";
 /* eslint-enable import/no-restricted-paths -- Implementation for memory storage */
 
@@ -74,7 +75,7 @@ import { WebPlatformUtilsService } from "./web-platform-utils.service";
     {
       provide: I18nServiceAbstraction,
       useClass: I18nService,
-      deps: [SYSTEM_LANGUAGE, LOCALES_DIRECTORY],
+      deps: [SYSTEM_LANGUAGE, LOCALES_DIRECTORY, GlobalStateProvider],
     },
     { provide: AbstractStorageService, useClass: HtmlStorageService },
     {

apps/web/src/app/core/i18n.service.ts

@@ -1,20 +1,30 @@
 import { I18nService as BaseI18nService } from "@bitwarden/common/platform/services/i18n.service";
+import { GlobalStateProvider } from "@bitwarden/common/platform/state";
 
 import { SupportedTranslationLocales } from "../../translation-constants";
 
 export class I18nService extends BaseI18nService {
-  constructor(systemLanguage: string, localesDirectory: string) {
-    super(systemLanguage || "en-US", localesDirectory, async (formattedLocale: string) => {
-      const filePath =
-        this.localesDirectory +
-        "/" +
-        formattedLocale +
-        "/messages.json?cache=" +
-        process.env.CACHE_TAG;
-      const localesResult = await fetch(filePath);
-      const locales = await localesResult.json();
-      return locales;
-    });
+  constructor(
+    systemLanguage: string,
+    localesDirectory: string,
+    globalStateProvider: GlobalStateProvider,
+  ) {
+    super(
+      systemLanguage || "en-US",
+      localesDirectory,
+      async (formattedLocale: string) => {
+        const filePath =
+          this.localesDirectory +
+          "/" +
+          formattedLocale +
+          "/messages.json?cache=" +
+          process.env.CACHE_TAG;
+        const localesResult = await fetch(filePath);
+        const locales = await localesResult.json();
+        return locales;
+      },
+      globalStateProvider,
+    );
 
     this.supportedTranslationLocales = SupportedTranslationLocales;
   }

apps/web/src/app/core/init.service.ts

@@ -50,8 +50,7 @@ export class InitService {
 
       setTimeout(() => this.notificationsService.init(), 3000);
       await this.vaultTimeoutService.init(true);
-      const locale = await this.stateService.getLocale();
-      await (this.i18nService as I18nService).init(locale);
+      await (this.i18nService as I18nService).init();
       (this.eventUploadService as EventUploadService).init(true);
       this.twoFactorService.init();
       const htmlEl = this.win.document.documentElement;

apps/web/src/app/core/tests/preloaded-english-i18n.module.ts

@@ -1,16 +1,23 @@
 import { APP_INITIALIZER, NgModule } from "@angular/core";
+import { Observable, of } from "rxjs";
 
 import { I18nService } from "@bitwarden/common/platform/abstractions/i18n.service";
-import { I18nService as BaseI18nService } from "@bitwarden/common/platform/services/i18n.service";
+import { TranslationService } from "@bitwarden/common/platform/services/translation.service";
 
 import eng from "../../../locales/en/messages.json";
 
-class PreloadedEnglishI18nService extends BaseI18nService {
+class PreloadedEnglishI18nService extends TranslationService implements I18nService {
+  translationLocale = "en";
+  locale$: Observable<string> = of("en");
   constructor() {
     super("en", "", () => {
       return Promise.resolve(eng);
     });
   }
+
+  setLocale(): Promise<void> {
+    throw new Error("Method not implemented.");
+  }
 }
 
 function i18nInitializer(i18nService: I18nService): () => Promise<void> {

apps/web/src/app/settings/preferences.component.ts

@@ -142,7 +142,7 @@ export class PreferencesComponent implements OnInit {
       ),
       enableFavicons: !(await this.settingsService.getDisableFavicon()),
       theme: await this.stateService.getTheme(),
-      locale: (await this.stateService.getLocale()) ?? null,
+      locale: (await firstValueFrom(this.i18nService.locale$)) ?? null,
     };
     this.startingLocale = initialFormValues.locale;
     this.startingTheme = initialFormValues.theme;
@@ -169,7 +169,7 @@ export class PreferencesComponent implements OnInit {
       await this.themingService.updateConfiguredTheme(values.theme);
       this.startingTheme = values.theme;
     }
-    await this.stateService.setLocale(values.locale);
+    await this.i18nService.setLocale(values.locale);
     if (values.locale !== this.startingLocale) {
       window.location.reload();
     } else {

libs/common/src/platform/abstractions/i18n.service.ts

@@ -4,4 +4,5 @@ import { TranslationService } from "./translation.service";
 
 export abstract class I18nService extends TranslationService {
   locale$: Observable<string>;
+  abstract setLocale(locale: string): Promise<void>;
 }

libs/common/src/platform/services/i18n.service.ts

@@ -1,28 +1,36 @@
-import { Observable, ReplaySubject } from "rxjs";
+import { Observable, firstValueFrom, map } from "rxjs";
 
 import { I18nService as I18nServiceAbstraction } from "../abstractions/i18n.service";
+import { GlobalState, GlobalStateProvider, KeyDefinition, TRANSLATION_DISK } from "../state";
 
 import { TranslationService } from "./translation.service";
 
+const LOCALE_KEY = new KeyDefinition<string>(TRANSLATION_DISK, "locale", {
+  deserializer: (value) => value,
+});
+
 export class I18nService extends TranslationService implements I18nServiceAbstraction {
-  protected _locale = new ReplaySubject<string>(1);
-  private _translationLocale: string;
-  locale$: Observable<string> = this._locale.asObservable();
+  translationLocale: string;
+  protected translationLocaleState: GlobalState<string>;
+  locale$: Observable<string>;
 
   constructor(
     protected systemLanguage: string,
     protected localesDirectory: string,
     protected getLocalesJson: (formattedLocale: string) => Promise<any>,
+    globalStateProvider: GlobalStateProvider,
   ) {
     super(systemLanguage, localesDirectory, getLocalesJson);
+    this.translationLocaleState = globalStateProvider.get(LOCALE_KEY);
+    this.locale$ = this.translationLocaleState.state$.pipe(map((locale) => locale ?? null));
   }
 
-  get translationLocale(): string {
-    return this._translationLocale;
+  async setLocale(locale: string): Promise<void> {
+    await this.translationLocaleState.update(() => locale);
   }
 
-  set translationLocale(locale: string) {
-    this._translationLocale = locale;
-    this._locale.next(locale);
+  override async init() {
+    const storedLocale = await firstValueFrom(this.translationLocaleState.state$);
+    await super.init(storedLocale);
   }
 }

libs/common/src/platform/state/state-definitions.ts

@@ -57,6 +57,7 @@ export const CLEAR_EVENT_DISK = new StateDefinition("clearEvent", "disk");
 export const CRYPTO_DISK = new StateDefinition("crypto", "disk");
 export const CRYPTO_MEMORY = new StateDefinition("crypto", "memory");
 export const ENVIRONMENT_DISK = new StateDefinition("environment", "disk");
+export const TRANSLATION_DISK = new StateDefinition("translation", "disk");
 
 // Secrets Manager
 

libs/common/src/state-migrations/migrate.ts

@@ -27,6 +27,7 @@ import { UserNotificationSettingsKeyMigrator } from "./migrations/29-move-user-n
 import { FixPremiumMigrator } from "./migrations/3-fix-premium";
 import { PolicyMigrator } from "./migrations/30-move-policy-state-to-state-provider";
 import { EnableContextMenuMigrator } from "./migrations/31-move-enable-context-menu-to-autofill-settings-state-provider";
+import { PreferredLanguageMigrator } from "./migrations/32-move-preferred-language";
 import { RemoveEverBeenUnlockedMigrator } from "./migrations/4-remove-ever-been-unlocked";
 import { AddKeyTypeToOrgKeysMigrator } from "./migrations/5-add-key-type-to-org-keys";
 import { RemoveLegacyEtmKeyMigrator } from "./migrations/6-remove-legacy-etm-key";
@@ -36,7 +37,7 @@ import { MoveBrowserSettingsToGlobal } from "./migrations/9-move-browser-setting
 import { MinVersionMigrator } from "./migrations/min-version";
 
 export const MIN_VERSION = 2;
-export const CURRENT_VERSION = 31;
+export const CURRENT_VERSION = 32;
 export type MinVersion = typeof MIN_VERSION;
 
 export function createMigrationBuilder() {
@@ -70,7 +71,8 @@ export function createMigrationBuilder() {
     .with(MoveBiometricUnlockToStateProviders, 27, 28)
     .with(UserNotificationSettingsKeyMigrator, 28, 29)
     .with(PolicyMigrator, 29, 30)
-    .with(EnableContextMenuMigrator, 30, CURRENT_VERSION);
+    .with(EnableContextMenuMigrator, 30, 31)
+    .with(PreferredLanguageMigrator, 31, CURRENT_VERSION);
 }
 
 export async function currentVersion(

libs/common/src/state-migrations/migrations/32-move-preferred-language.spec.ts

@@ -0,0 +1,77 @@
+import { MockProxy } from "jest-mock-extended";
+
+import { MigrationHelper } from "../migration-helper";
+import { mockMigrationHelper } from "../migration-helper.spec";
+
+import { LOCALE_KEY, PreferredLanguageMigrator } from "./32-move-preferred-language";
+
+function exampleJSON() {
+  return {
+    global: {
+      locale: "en",
+      otherStuff: "otherStuff1",
+    },
+    otherStuff: "otherStuff2",
+  };
+}
+
+function rollbackJSON() {
+  return {
+    global_translation_locale: "en",
+    global: {
+      otherStuff: "otherStuff1",
+    },
+    otherStuff: "otherStuff2",
+  };
+}
+
+describe("PreferredLanguageMigrator", () => {
+  let helper: MockProxy<MigrationHelper>;
+  let sut: PreferredLanguageMigrator;
+
+  describe("migrate", () => {
+    beforeEach(() => {
+      helper = mockMigrationHelper(exampleJSON(), 31);
+      sut = new PreferredLanguageMigrator(31, 32);
+    });
+
+    it("should remove locale setting from global", async () => {
+      await sut.migrate(helper);
+      expect(helper.set).toHaveBeenCalledTimes(1);
+      expect(helper.set).toHaveBeenCalledWith("global", {
+        otherStuff: "otherStuff1",
+      });
+    });
+
+    it("should set locale for global state provider", async () => {
+      await sut.migrate(helper);
+
+      expect(helper.setToGlobal).toHaveBeenCalledTimes(1);
+      expect(helper.setToGlobal).toHaveBeenCalledWith(LOCALE_KEY, "en");
+    });
+  });
+
+  describe("rollback", () => {
+    beforeEach(() => {
+      helper = mockMigrationHelper(rollbackJSON(), 32);
+      sut = new PreferredLanguageMigrator(31, 32);
+    });
+
+    it("should null out new values for global", async () => {
+      await sut.rollback(helper);
+
+      expect(helper.setToGlobal).toHaveBeenCalledTimes(1);
+      expect(helper.setToGlobal).toHaveBeenCalledWith(LOCALE_KEY, null);
+    });
+
+    it("should add locale back to the old global object", async () => {
+      await sut.rollback(helper);
+
+      expect(helper.set).toHaveBeenCalledTimes(1);
+      expect(helper.set).toHaveBeenCalledWith("global", {
+        locale: "en",
+        otherStuff: "otherStuff1",
+      });
+    });
+  });
+});

libs/common/src/state-migrations/migrations/32-move-preferred-language.ts

@@ -0,0 +1,39 @@
+import { MigrationHelper } from "../migration-helper";
+import { Migrator } from "../migrator";
+
+type ExpectedGlobal = {
+  locale?: string;
+};
+
+export const LOCALE_KEY = {
+  key: "locale",
+  stateDefinition: {
+    name: "translation",
+  },
+};
+
+export class PreferredLanguageMigrator extends Migrator<31, 32> {
+  async migrate(helper: MigrationHelper): Promise<void> {
+    // global state
+    const global = await helper.get<ExpectedGlobal>("global");
+    if (!global?.locale) {
+      return;
+    }
+
+    await helper.setToGlobal(LOCALE_KEY, global.locale);
+    delete global.locale;
+    await helper.set("global", global);
+  }
+
+  async rollback(helper: MigrationHelper): Promise<void> {
+    const locale = await helper.getFromGlobal<string>(LOCALE_KEY);
+
+    if (!locale) {
+      return;
+    }
+    const global = (await helper.get<ExpectedGlobal>("global")) ?? {};
+    global.locale = locale;
+    await helper.set("global", global);
+    await helper.setToGlobal(LOCALE_KEY, null);
+  }
+}

libs/components/src/utils/i18n-mock.service.ts

@@ -34,4 +34,8 @@ export class I18nMockService implements I18nService {
   translate(id: string, p1?: string, p2?: string, p3?: string) {
     return this.t(id, p1, p2, p3);
   }
+
+  async setLocale(locale: string): Promise<void> {
+    throw new Error("Method not implemented.");
+  }
 }