Do not use disabled or non-existing languages from language cookie

src/app/core/locale/locale.service.spec.ts

@@ -62,25 +62,33 @@ describe('LocaleService test suite', () => {
   });
 
   describe('getCurrentLanguageCode', () => {
-    it('should return language saved on cookie', () => {
+    beforeEach(() => {
+      spyOn(translateService, 'getLangs').and.returnValue(langList);
+    });
+
+    it('should return the language saved on cookie if it\'s a valid & active language', () => {
       spyOnGet.and.returnValue('de');
       expect(service.getCurrentLanguageCode()).toBe('de');
     });
 
-    describe('', () => {
-      beforeEach(() => {
-        spyOn(translateService, 'getLangs').and.returnValue(langList);
-      });
+    it('should return the default language if the cookie language is disabled', () => {
+      spyOnGet.and.returnValue('disabled');
+      expect(service.getCurrentLanguageCode()).toBe('en');
+    });
 
-      it('should return language from browser setting', () => {
-        spyOn(translateService, 'getBrowserLang').and.returnValue('it');
-        expect(service.getCurrentLanguageCode()).toBe('it');
-      });
+    it('should return the default language if the cookie language does not exist', () => {
+      spyOnGet.and.returnValue('does-not-exist');
+      expect(service.getCurrentLanguageCode()).toBe('en');
+    });
 
-      it('should return default language from config', () => {
-        spyOn(translateService, 'getBrowserLang').and.returnValue('fr');
-        expect(service.getCurrentLanguageCode()).toBe('en');
-      });
+    it('should return language from browser setting', () => {
+      spyOn(translateService, 'getBrowserLang').and.returnValue('it');
+      expect(service.getCurrentLanguageCode()).toBe('it');
+    });
+
+    it('should return default language from config', () => {
+      spyOn(translateService, 'getBrowserLang').and.returnValue('fr');
+      expect(service.getCurrentLanguageCode()).toBe('en');
     });
   });
 

src/app/core/locale/locale.service.ts

@@ -11,6 +11,7 @@ import { map, mergeMap, take } from 'rxjs/operators';
 import { NativeWindowRef, NativeWindowService } from '../services/window.service';
 import { RouteService } from '../services/route.service';
 import { DOCUMENT } from '@angular/common';
+import { LangConfig } from '../../../config/lang-config.interface';
 
 export const LANG_COOKIE = 'dsLanguage';
 
@@ -52,8 +53,7 @@ export class LocaleService {
   getCurrentLanguageCode(): string {
     // Attempt to get the language from a cookie
     let lang = this.getLanguageCodeFromCookie();
-    if (isEmpty(lang)) {
-      // Cookie not found
+    if (isEmpty(lang) || environment.languages.find((langConfig: LangConfig) => langConfig.code === lang && langConfig.active) === undefined) {
       // Attempt to get the browser language from the user
       if (this.translate.getLangs().includes(this.translate.getBrowserLang())) {
         lang = this.translate.getBrowserLang();

src/environments/environment.test.ts

@@ -178,6 +178,10 @@ export const environment: AppConfig = {
     code: 'lv',
     label: 'Latviešu',
     active: true,
+  }, {
+    code: 'disabled',
+    label: 'Disabled',
+    active: false,
   }],
 
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