import { TestBed } from '@angular/core/testing';
import { provideHttpClient } from '@angular/common/http';
import { provideHttpClientTesting } from '@angular/common/http/testing';
import { Router, UrlTree } from '@angular/router';
import { provideRouter } from '@angular/router';

import { authGuard } from './auth-guard';
import { Session } from './session';
import { provideApiConfiguration } from '../api/api-configuration';

describe('authGuard', () => {
  let session: Session;
  let router: Router;

  beforeEach(() => {
    localStorage.clear();
    TestBed.configureTestingModule({
      providers: [
        provideHttpClient(),
        provideHttpClientTesting(),
        provideApiConfiguration('http://api.test'),
        provideRouter([]),
      ],
    });
    session = TestBed.inject(Session);
    router = TestBed.inject(Router);
  });

  function runGuard() {
    return TestBed.runInInjectionContext(() => authGuard({} as any, {} as any));
  }

  it('allows navigation when authenticated', () => {
    session.token.set('tok-abc');
    expect(runGuard()).toBe(true);
  });

  it('redirects to /login when not authenticated', () => {
    const result = runGuard();
    expect(result).not.toBe(true);
    expect((result as UrlTree).toString()).toBe(router.createUrlTree(['/login']).toString());
  });
});