import { TestBed } from '@angular/core/testing';
import { ActivatedRouteSnapshot, provideRouter, Router, RouterStateSnapshot, UrlTree } from '@angular/router';
import Keycloak from 'keycloak-js';

import { requireModeratoreGuard } from './require-moderatore.guard';

const route = {} as ActivatedRouteSnapshot;
const state = {} as RouterStateSnapshot;

function setup(roles: string[]): void {
  const keycloakMock = { tokenParsed: { realm_access: { roles } } };

  TestBed.configureTestingModule({
    providers: [provideRouter([]), { provide: Keycloak, useValue: keycloakMock }]
  });
}

describe('requireModeratoreGuard', () => {
  it('lascia proseguire la navigazione se l\'utente ha il ruolo moderatore', () => {
    setup(['moderatore']);

    const result = TestBed.runInInjectionContext(() => requireModeratoreGuard(route, state));

    expect(result).toBe(true);
  });

  it('reindirizza alla home per un utente senza il ruolo moderatore', () => {
    setup(['censito']);

    const result = TestBed.runInInjectionContext(() => requireModeratoreGuard(route, state));

    const router = TestBed.inject(Router);
    expect((result as UrlTree).toString()).toBe(router.parseUrl('/').toString());
  });

  it('reindirizza alla home se il token non ha ruoli', () => {
    setup([]);

    const result = TestBed.runInInjectionContext(() => requireModeratoreGuard(route, state));

    const router = TestBed.inject(Router);
    expect((result as UrlTree).toString()).toBe(router.parseUrl('/').toString());
  });
});