From 80e090da860cd00eed6dfad33f2dbe92de2fedc9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Pierre-=C3=89tienne=20Lord?=
 <7397743+pelord@users.noreply.github.com>
Date: Thu, 20 Apr 2023 09:25:50 -0400
Subject: [PATCH] fix(core): Missing languageService randomly occur (#1223)

* fix(core): Missing languageService randomly occur

* wip remove debounceTime

* wip
---
 demo/src/app/app.module.ts                    | 26 ++++++++++++-------
 .../lib/language/shared/language.loader.ts    |  7 ++---
 2 files changed, 19 insertions(+), 14 deletions(-)

diff --git a/demo/src/app/app.module.ts b/demo/src/app/app.module.ts
index 587ad94422..e3bf60c8c2 100644
--- a/demo/src/app/app.module.ts
+++ b/demo/src/app/app.module.ts
@@ -1,6 +1,6 @@
 import { BrowserModule, DomSanitizer } from '@angular/platform-browser';
 import { BrowserAnimationsModule } from '@angular/platform-browser/animations';
-import { APP_INITIALIZER, NgModule } from '@angular/core';
+import { APP_INITIALIZER, ApplicationRef, Injector, NgModule } from '@angular/core';
 import { HammerModule } from '@angular/platform-browser';
 import { MatButtonModule } from '@angular/material/button';
 import { MatIconRegistry, MatIconModule } from '@angular/material/icon';
@@ -52,6 +52,7 @@ import { AppRoutingModule } from './app-routing.module';
 import { AppComponent } from './app.component';
 import { IgoCoreModule, LanguageService } from '@igo2/core';
 import { MatTooltipDefaultOptions, MAT_TOOLTIP_DEFAULT_OPTIONS } from '@angular/material/tooltip';
+import { concatMap, first } from 'rxjs';
 
 export const defaultTooltipOptions: MatTooltipDefaultOptions = {
   showDelay: 500,
@@ -118,7 +119,7 @@ export const defaultTooltipOptions: MatTooltipDefaultOptions = {
     HammerModule
   ],
   providers: [
-    {provide: APP_INITIALIZER, useFactory: appInitializerFactory, deps: [LanguageService], multi: true},
+    { provide: APP_INITIALIZER, useFactory: appInitializerFactory, deps: [Injector, ApplicationRef], multi: true },
     { provide: MAT_TOOLTIP_DEFAULT_OPTIONS, useValue: defaultTooltipOptions }
   ],
   bootstrap: [AppComponent]
@@ -133,14 +134,21 @@ export class AppModule {
   }
 }
 
-export function appInitializerFactory(languageService: LanguageService) {
+export function appInitializerFactory(injector: Injector,
+  applicationRef: ApplicationRef) {
   return () => new Promise<any>((resolve: any) => {
-      languageService.translate.getTranslation(languageService.getLanguage()).subscribe(() => {
-        console.info(`Successfully initialized '${languageService.getLanguage()}' language.'`);
-      }, err => {
-        console.error(`Problem with '${languageService.getLanguage()}' language initialization.'`);
-      }, () => {
-        resolve(null);
+    applicationRef.isStable.pipe(
+      first(isStable => isStable === true),
+      concatMap(() => {
+        const languageService = injector.get(LanguageService);
+        const lang = languageService.getLanguage();
+        return languageService.translate.getTranslation(lang);
+      }))
+      .subscribe((translations) => {
+        const languageService = injector.get(LanguageService);
+        const lang = languageService.getLanguage();
+        languageService.translate.setTranslation(lang, translations);
+        resolve();
       });
   });
 }
diff --git a/packages/core/src/lib/language/shared/language.loader.ts b/packages/core/src/lib/language/shared/language.loader.ts
index 5ef98972b9..8cfcfeb7bc 100644
--- a/packages/core/src/lib/language/shared/language.loader.ts
+++ b/packages/core/src/lib/language/shared/language.loader.ts
@@ -1,7 +1,6 @@
 import { HttpClient } from '@angular/common/http';
 
-import { combineLatest } from 'rxjs';
-import { map } from 'rxjs/operators';
+import { forkJoin, map } from 'rxjs';
 
 import { TranslateLoader } from '@ngx-translate/core';
 
@@ -9,8 +8,6 @@ import { ObjectUtils } from '@igo2/utils';
 
 import { ConfigService } from '../../config/config.service';
 
-declare function require(arg: string): any;
-
 export class LanguageLoader implements TranslateLoader {
   constructor(
     private http: HttpClient,
@@ -35,7 +32,7 @@ export class LanguageLoader implements TranslateLoader {
       this.http.get(`${prefix}${lang}${this.suffix}`)
     );
 
-    const locale$ = combineLatest([igoLocale$, ...appLocale$]);
+    const locale$ = forkJoin([igoLocale$, ...appLocale$]);
 
     return locale$.pipe(
       map((translations) => {