import { CommonModule } from '@angular/common';
import { NgModule, Optional, SkipSelf } from '@angular/core';
import { RouterModule } from '@angular/router';

import { FooterComponent } from './components/footer/footer.component';
import { LogoComponent } from './components/logo/logo.component';
import { NavbarComponent } from './components/navbar/navbar.component';
import { PageNotFoundComponent } from './components/page-not-found/page-not-found.component';
import { throwIfAlreadyLoaded } from './guards/module-import.guard';

@NgModule({
	declarations: [FooterComponent, LogoComponent, NavbarComponent, PageNotFoundComponent],
	imports: [CommonModule, RouterModule],
	exports: [FooterComponent, LogoComponent, NavbarComponent, PageNotFoundComponent],
})
export class CoreModule {
	constructor(@Optional() @SkipSelf() parentModule: CoreModule) {
		throwIfAlreadyLoaded(parentModule, 'CoreModule');
	}
}