import { describe, expect, it } from 'vitest';
import { screen, waitFor } from '@testing-library/react';
import userEvent from '@testing-library/user-event';

import { apiError, installFetch, json, makeUser, renderApp } from './helpers';

const instanceOpen = {
  name: 'glchat-test',
  version: 'v0.1.0-test',
  registration_enabled: true,
  allow_guild_creation: true,
  max_guilds_per_user: 5,
  max_members_per_guild: 100,
  max_message_length: 2000,
  main_guild_id: 'g-main',
  user_count: 1,
  guild_count: 1,
};

describe('страница входа', () => {
  it('успешный вход переводит в /app', async () => {
    const user = makeUser();
    const fetchMock = installFetch([
      { match: '/api/v1/instance', response: () => json({ instance: instanceOpen }) },
      { match: '/api/v1/auth/login', method: 'POST', response: () => json({ user }) },
      { match: '/api/v1/users/@me', response: () => json({ user }) },
      { match: '/api/v1/users/@me/guilds', response: () => json({ guilds: [] }) },
      { match: '/api/v1/guilds/g-main/join', method: 'POST', response: () => json({ ok: true }) },
    ]);

    const { router } = renderApp('/login');
    const visitor = userEvent.setup();

    await visitor.type(await screen.findByLabelText('Почта'), 'alice@example.com');
    await visitor.type(screen.getByLabelText('Пароль'), 'super-secret-1');
    await visitor.click(screen.getByRole('button', { name: 'Войти' }));

    await waitFor(() => {
      expect(router.state.location.pathname).toBe('/app/empty');
    });
    expect(
      await screen.findByRole('button', { name: 'Присоединиться к главному серверу' }),
    ).toBeVisible();

    const loginCall = fetchMock.mock.calls.find(([input]) =>
      String(input).includes('/auth/login'),
    );
    expect(loginCall).toBeDefined();
    const init = loginCall?.[1] as RequestInit;
    expect(JSON.parse(String(init.body))).toEqual({
      email: 'alice@example.com',
      password: 'super-secret-1',
    });
  });

  it('при auth.2fa_required показывает поле кода и повторяет вход с totp_code', async () => {
    const user = makeUser();
    let loginAttempts = 0;
    const fetchMock = installFetch([
      { match: '/api/v1/instance', response: () => json({ instance: instanceOpen }) },
      {
        match: '/api/v1/auth/login',
        method: 'POST',
        response: () => {
          loginAttempts += 1;
          return loginAttempts === 1 ? apiError('auth.2fa_required', 401) : json({ user });
        },
      },
      { match: '/api/v1/users/@me', response: () => json({ user }) },
      { match: '/api/v1/users/@me/guilds', response: () => json({ guilds: [] }) },
    ]);

    const { router } = renderApp('/login');
    const visitor = userEvent.setup();

    await visitor.type(await screen.findByLabelText('Почта'), 'alice@example.com');
    await visitor.type(screen.getByLabelText('Пароль'), 'super-secret-1');
    await visitor.click(screen.getByRole('button', { name: 'Войти' }));

    const totpField = await screen.findByLabelText('Код 2FA');
    expect(totpField).toBeVisible();

    await visitor.type(totpField, '123456');
    await visitor.click(screen.getByRole('button', { name: 'Войти' }));

    await waitFor(() => {
      expect(router.state.location.pathname).toBe('/app/empty');
    });

    const secondLogin = fetchMock.mock.calls.filter(([input]) =>
      String(input).includes('/auth/login'),
    )[1];
    const init = secondLogin?.[1] as RequestInit;
    expect(JSON.parse(String(init.body))).toEqual({
      email: 'alice@example.com',
      password: 'super-secret-1',
      totp_code: '123456',
    });
  });
});