import { signal } from '@angular/core';
import { fireEvent, render, screen } from '@testing-library/angular';
import { of, throwError } from 'rxjs';
import { BeheerDefaultFill, BffApiV1Service } from 'api-client';
import { AuthService } from 'auth';
import { axe } from 'vitest-axe';
import { DefaultFillPage } from './default-fill-page';

const current: BeheerDefaultFill = {
  bronorganisatie: '517439943',
  verantwoordelijkeOrganisatie: '517439943',
  vertrouwelijkheidaanduiding: 'openbaar',
};

class FakeAuth extends AuthService {
  readonly isAuthenticated = signal(true);
  readonly bsn = signal<string | undefined>(undefined);
  override readonly roles = signal<readonly string[]>(['beheerder']);
  login(): void {
    /* not exercised */
  }
  logout(): void {
    /* not exercised */
  }
}

function setup(
  overrides: {
    getBeheerDefaultFill?: ReturnType<typeof vi.fn>;
    putBeheerDefaultFill?: ReturnType<typeof vi.fn>;
  } = {},
) {
  const getBeheerDefaultFill = overrides.getBeheerDefaultFill ?? vi.fn().mockReturnValue(of(current));
  const putBeheerDefaultFill = overrides.putBeheerDefaultFill ?? vi.fn().mockReturnValue(of(undefined));
  return {
    getBeheerDefaultFill,
    putBeheerDefaultFill,
    providers: [
      { provide: BffApiV1Service, useValue: { getBeheerDefaultFill, putBeheerDefaultFill } },
      { provide: AuthService, useClass: FakeAuth },
    ],
  };
}

describe('DefaultFillPage', () => {
  it('loads the current default-fill into the form on open', async () => {
    const { getBeheerDefaultFill, providers } = setup();
    await render(DefaultFillPage, { providers });

    expect(getBeheerDefaultFill).toHaveBeenCalled();
    const bron = (await screen.findByLabelText('Bronorganisatie')) as HTMLInputElement;
    expect(bron.value).toBe('517439943');
  });

  it('saves the edited values via the BFF', async () => {
    const { putBeheerDefaultFill, providers } = setup();
    await render(DefaultFillPage, { providers });

    const bron = (await screen.findByLabelText('Bronorganisatie')) as HTMLInputElement;
    fireEvent.input(bron, { target: { value: '999999999' } });
    fireEvent.click(screen.getByRole('button', { name: /opslaan/i }));

    expect(putBeheerDefaultFill).toHaveBeenCalledWith(
      expect.objectContaining({ bronorganisatie: '999999999', vertrouwelijkheidaanduiding: 'openbaar' }),
    );
    expect(await screen.findByText(/standaardwaarden zijn opgeslagen/i)).toBeTruthy();
  });

  it('surfaces a save failure instead of swallowing it', async () => {
    const { providers } = setup({
      putBeheerDefaultFill: vi.fn().mockReturnValue(throwError(() => new Error('403'))),
    });
    await render(DefaultFillPage, { providers });

    fireEvent.click(await screen.findByRole('button', { name: /opslaan/i }));

    expect(await screen.findByText(/opslaan is niet gelukt/i)).toBeTruthy();
  });

  it('has no WCAG 2.1 AA violations', async () => {
    document.documentElement.lang = 'nl';
    const { container } = await render(DefaultFillPage, { providers: setup().providers });

    const results = await axe(container, {
      runOnly: { type: 'tag', values: ['wcag2a', 'wcag2aa', 'wcag21a', 'wcag21aa'] },
    });

    expect(results.violations).toEqual([]);
  });
});