fix[frontend](federation/settings_nav): added route guard to avoid incorrect navigation on federation mode

Author: AlexSanchez-bit

frontend/src/app/app-routing.module.ts

@@ -1,6 +1,7 @@
 import {NgModule} from '@angular/core';
 import {RouterModule, Routes} from '@angular/router';
 import {UserRouteAccessService} from './core/auth/user-route-access-service';
+import {FederationDisabledGuard} from './federation/guards/federation-disabled.guard';
 import {
   FederationEmailConfigPageComponent
 } from './federation/pages/email-config/federation-email-config.page.component';
@@ -74,7 +75,8 @@ const routes: Routes = [
   {
     path: 'app-management',
     loadChildren: './app-management/app-management.module#AppManagementModule',
-    canActivate: [UserRouteAccessService],
+    canActivate: [UserRouteAccessService, FederationDisabledGuard],
+    canActivateChild: [FederationDisabledGuard],
     data: {authorities: [USER_ROLE, ADMIN_ROLE]}
   },
   {

frontend/src/app/federation/guards/federation-disabled.guard.ts

@@ -0,0 +1,21 @@
+import {Injectable} from '@angular/core';
+import {CanActivate, CanActivateChild, Router} from '@angular/router';
+import {FederationModeService} from '../services/federation-mode.service';
+
+@Injectable({providedIn: 'root'})
+export class FederationDisabledGuard implements CanActivate, CanActivateChild {
+  constructor(private federationModeService: FederationModeService,
+              private router: Router) {}
+
+  canActivate(): boolean {
+    if (this.federationModeService.isActive) {
+      this.router.navigate(['/federation/welcome']);
+      return false;
+    }
+    return true;
+  }
+
+  canActivateChild(): boolean {
+    return this.canActivate();
+  }
+}