[CST-2877] fix method for lang list & add reload after change lang

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

@@ -230,6 +230,12 @@ describe('AuthService test', () => {
       expect(result).toBe(false);
     });
 
+    it('should return true when authentication is loaded', () => {
+      authService.isAuthenticationLoaded().subscribe((status: boolean) => {
+        expect(status).toBe(true);
+      });
+    });
+
   });
 
   describe('', () => {

src/app/core/auth/auth.service.ts

@@ -21,7 +21,8 @@ import {
   getAuthenticationToken,
   getRedirectUrl,
   isAuthenticated,
-  isTokenRefreshing
+  isTokenRefreshing,
+  isAuthenticatedLoaded
 } from './selectors';
 import { AppState, routerStateSelector } from '../../app.reducer';
 import {
@@ -148,6 +149,14 @@ export class AuthService {
     return this.store.pipe(select(isAuthenticated));
   }
 
+  /**
+   * Determines if authentication is loaded
+   * @returns {Observable<boolean>}
+   */
+  public isAuthenticationLoaded(): Observable<boolean> {
+    return this.store.pipe(select(isAuthenticatedLoaded));
+  }
+
   /**
    * Returns the href link to authenticated user
    * @returns {string}
@@ -197,7 +206,7 @@ export class AuthService {
     return this.store.pipe(
       select(getAuthenticatedUserId),
       hasValueOperator(),
-      switchMap((id: string) => this.epersonService.findById(id)),
+      switchMap((id: string) => { console.log('ID: ', id); return this.epersonService.findById(id) }),
       getAllSucceededRemoteDataPayload()
     )
   }

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

@@ -8,6 +8,7 @@ import { TranslateLoaderMock } from '../../shared/mocks/translate-loader.mock';
 import { LANG_COOKIE, LocaleService, LANG_ORIGIN } from './locale.service';
 import { AuthService } from '../auth/auth.service';
 import { AuthServiceMock } from 'src/app/shared/mocks/auth.service.mock';
+import { NativeWindowRef } from '../services/window.service';
 
 describe('LocaleService test suite', () => {
   let service: LocaleService;
@@ -15,6 +16,7 @@ describe('LocaleService test suite', () => {
   let cookieService: CookieService;
   let translateService: TranslateService;
   let authService: AuthService;
+  let window;
   let spyOnGet;
   let spyOnSet;
 
@@ -41,7 +43,8 @@ describe('LocaleService test suite', () => {
     cookieService = TestBed.get(CookieService);
     translateService = TestBed.get(TranslateService);
     authService = TestBed.get(TranslateService);
-    service = new LocaleService(cookieService, translateService, authService);
+    window = new NativeWindowRef();
+    service = new LocaleService(window, cookieService, translateService, authService);
     serviceAsAny = service;
     spyOnGet = spyOn(cookieService, 'get');
     spyOnSet = spyOn(cookieService, 'set');

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

@@ -1,12 +1,14 @@
-import { Injectable } from '@angular/core';
+import { Injectable, Inject } from '@angular/core';
 
 import { TranslateService } from '@ngx-translate/core';
 
-import { isEmpty, hasValue } from '../../shared/empty.util';
+import { isEmpty, isNotEmpty } from '../../shared/empty.util';
 import { CookieService } from '../services/cookie.service';
 import { environment } from '../../../environments/environment';
 import { AuthService } from '../auth/auth.service';
-import { BehaviorSubject, Observable } from 'rxjs';
+import { Observable, of as observableOf, combineLatest } from 'rxjs';
+import { map, take, flatMap, tap } from 'rxjs/operators';
+import { NativeWindowService, NativeWindowRef } from '../services/window.service';
 
 export const LANG_COOKIE = 'language_cookie';
 
@@ -33,6 +35,7 @@ const EPERSON_LANG_METADATA = 'eperson.language';
 export class LocaleService {
 
   constructor(
+    @Inject(NativeWindowService) protected _window: NativeWindowRef,
     private cookie: CookieService,
     private translate: TranslateService,
     private authService: AuthService) {
@@ -58,39 +61,61 @@ export class LocaleService {
     return lang;
   }
 
+  /**
+   * Get the languages list of the user in Accept-Language format
+   *
+   * @returns {Observable<string[]>}
+   */
   getLanguageCodeList(): Observable<string[]> {
-    const bs = new BehaviorSubject<string[]>([]);
-    // check if user has set preferred language in UI
-    if (this.translate.currentLang) {
-      bs.next(
-        this.setQuality(
-          [this.translate.currentLang],
-          LANG_ORIGIN.UI,
-          false)
-        );
-    }
-    // check if user is loggedIn and has language associated
-    this.authService.getAuthenticatedUserFromStore().subscribe(
-      (eperson) => {
+    const obs$ = combineLatest([
+      this.authService.isAuthenticated(),
+      this.authService.isAuthenticationLoaded()
+    ]);
+
+    return obs$.pipe(
+      take(1),
+      flatMap(([isAuthenticated, isLoaded]) => {
+        let epersonLang$: Observable<string[]> = observableOf([]);
+        if (isAuthenticated && isLoaded) {
+          epersonLang$ = this.authService.getAuthenticatedUserFromStore().pipe(
+            take(1),
+            map((eperson) => {
+              const languages: string[] = [];
               const ePersonLang = eperson.firstMetadataValue(EPERSON_LANG_METADATA);
-        bs.next(
-          this.setQuality(
+              if (ePersonLang) {
+                languages.push(...this.setQuality(
                   [ePersonLang],
                   LANG_ORIGIN.EPERSON,
-            !isEmpty(this.translate.currentLang))
+                  !isEmpty(this.translate.currentLang)));
+              }
+              return languages;
+            })
           );
         }
-    );
-    // get the browser languages
+        return epersonLang$.pipe(
+          map((epersonLang: string[]) => {
+            const languages: string[] = [];
+            if (this.translate.currentLang) {
+              languages.push(...this.setQuality(
+                [this.translate.currentLang],
+                LANG_ORIGIN.UI,
+                false));
+            }
+            if (isNotEmpty(epersonLang)) {
+              languages.push(...epersonLang);
+            }
             if (navigator.languages) {
-      bs.next(
-        this.setQuality(
+              languages.push(...this.setQuality(
                 Object.assign([], navigator.languages),
                 LANG_ORIGIN.BROWSER,
                 !isEmpty(this.translate.currentLang))
               );
             }
-    return bs;
+            return languages;
+          })
+        )
+      })
+    );
   }
 
   /**
@@ -129,8 +154,8 @@ export class LocaleService {
    * Returns a new array that contains the languages list with the quality value.
    * The quality factor indicate the relative degree of preference for the language
    * @param languages the languages list
-   * @param origin
-   * @param hasOther
+   * @param origin origin of language list (UI, EPERSON, BROWSER)
+   * @param hasOther true if contains other language, false otherwise
    */
   setQuality(languages: string[], origin: LANG_ORIGIN, hasOther: boolean): string[] {
     const langWithPrior = [];
@@ -155,4 +180,13 @@ export class LocaleService {
     return langWithPrior;
   }
 
+  /**
+   * Refresh route navigated
+   */
+  public refreshAfterChangeLanguage() {
+    // Hard redirect to the reload page with a unique number behind it
+    // so that all state is definitely lost
+    this._window.nativeWindow.location.href = `/reload/${new Date().getTime()}`;
+  }
+
 }

src/app/shared/lang-switch/lang-switch.component.spec.ts

@@ -34,11 +34,12 @@ class CustomLoader implements TranslateLoader {
 
 let localService: any;
 
-describe('LangSwitchComponent', () => {
+fdescribe('LangSwitchComponent', () => {
 
   function getMockLocaleService(): LocaleService {
     return jasmine.createSpyObj('LocaleService', {
-      setCurrentLanguageCode: jasmine.createSpy('setCurrentLanguageCode')
+      setCurrentLanguageCode: jasmine.createSpy('setCurrentLanguageCode'),
+      refreshAfterChangeLanguage: jasmine.createSpy('refreshAfterChangeLanguage')
     })
   }
 
@@ -121,6 +122,7 @@ describe('LangSwitchComponent', () => {
 
       it('should translate the app and set the client\'s language cookie', () => {
         expect(localService.setCurrentLanguageCode).toHaveBeenCalled();
+        expect(localService.refreshAfterChangeLanguage).toHaveBeenCalled();
       });
 
     });

src/app/shared/lang-switch/lang-switch.component.ts

@@ -55,6 +55,7 @@ export class LangSwitchComponent implements OnInit {
    */
   useLang(lang: string) {
     this.localeService.setCurrentLanguageCode(lang);
+    this.localeService.refreshAfterChangeLanguage();
   }
 
 }