store current language in the cookie

npm/ng-packs/packages/core/src/lib/core.module.ts

@@ -32,6 +32,7 @@ import { TENANT_KEY } from './tokens/tenant-key.token';
 import { noop } from './utils/common-utils';
 import './utils/date-extensions';
 import { getInitialData, localeInitializer } from './utils/initial-utils';
+import { CookieLanguageProvider } from './providers/cookie-language.provider';
 
 export function storageFactory(): OAuthStorage {
   return oAuthStorage;
@@ -131,6 +132,7 @@ export class CoreModule {
       ngModule: RootCoreModule,
       providers: [
         LocaleProvider,
+        CookieLanguageProvider,
         {
           provide: 'CORE_OPTIONS',
           useValue: options,

npm/ng-packs/packages/core/src/lib/providers/cookie-language.provider.ts

@@ -0,0 +1,23 @@
+import { APP_INITIALIZER, Injector, Provider } from '@angular/core';
+import { DOCUMENT } from '@angular/common';
+import { SessionStateService } from '../services/session-state.service';
+import { COOKIE_LANGUAGE_KEY } from '../tokens/cookie-language-key.token';
+
+export function setLanguageToCookie(injector: Injector) {
+  return () => {
+    const sessionState = injector.get(SessionStateService);
+    const document = injector.get(DOCUMENT);
+    const cookieLanguageKey = injector.get(COOKIE_LANGUAGE_KEY);
+    sessionState.getLanguage$().subscribe(language => {
+      const cookieValue = encodeURIComponent(`c=${language}|uic=${language}`);
+      document.cookie = `${cookieLanguageKey}=${cookieValue}`;
+    });
+  };
+}
+
+export const CookieLanguageProvider: Provider = {
+  provide: APP_INITIALIZER,
+  useFactory: setLanguageToCookie,
+  deps: [Injector],
+  multi: true,
+};

npm/ng-packs/packages/core/src/lib/providers/index.ts

@@ -1 +1,2 @@
+export * from './cookie-language.provider';
 export * from './locale.provider';

npm/ng-packs/packages/core/src/lib/tokens/cookie-language-key.token.ts

@@ -0,0 +1,5 @@
+import { InjectionToken } from '@angular/core';
+
+export const COOKIE_LANGUAGE_KEY = new InjectionToken<string>('COOKIE_LANGUAGE_KEY', {
+  factory: () => '.AspNetCore.Culture',
+});

npm/ng-packs/packages/core/src/lib/tokens/index.ts

@@ -1,6 +1,7 @@
+export * from './app-config.token';
+export * from './cookie-language-key.token';
 export * from './list.token';
 export * from './lodaer-delay.token';
 export * from './manage-profile.token';
 export * from './options.token';
-export * from './app-config.token';
 export * from './tenant-key.token';