DiunaBI/Frontend/src/app/app-routing.module.ts

import { NgModule } from '@angular/core';
import { RouterModule, Routes } from '@angular/router';
import { LoginPageComponent } from './components/login-page/login-page.component';
import { MainViewComponent } from './main-view/main-view.component';

const routes: Routes = [
  {
    path: '',
    component: LoginPageComponent,
  },
  {
    path: 'app',
    component: MainViewComponent
  }
];

@NgModule({
  imports: [RouterModule.forRoot(routes)],
  exports: [RouterModule]
})
export class AppRoutingModule { }