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

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

const user = makeUser();

const sessions = [
  {
    id: 's-1',
    user_agent: 'Firefox on Linux',
    ip: '10.0.0.2',
    created_at: '2026-09-01T10:00:00Z',
    last_seen: '2026-09-19T10:00:00Z',
    current: true,
  },
  {
    id: 's-2',
    user_agent: 'Chrome on macOS',
    ip: '10.0.0.3',
    created_at: '2026-09-02T10:00:00Z',
    last_seen: '2026-09-18T10:00:00Z',
    current: false,
  },
];

describe('настройки: безопасность', () => {
  it('включение 2FA показывает секрет и коды восстановления', async () => {
    const fetchMock = installFetch([
      { match: '/api/v1/users/@me', response: () => json({ user }) },
      { match: '/api/v1/auth/sessions', response: () => json({ sessions }) },
      {
        match: '/api/v1/auth/2fa/setup',
        method: 'POST',
        response: () =>
          json({
            secret: 'JBSWY3DPEHPK3PXP',
            otpauth_url: 'otpauth://totp/glchat:alice?secret=X',
            // QR-код рисует сервер и отдаёт data-URI: внешние сервисы не нужны.
            qr_png: 'data:image/png;base64,iVBORw0KGgo=',
          }),
      },
      {
        match: '/api/v1/auth/2fa/enable',
        method: 'POST',
        response: () => json({ recovery_codes: ['aaaa-bbbb', 'cccc-dddd'] }),
      },
    ]);

    renderApp('/settings/account/security');
    const visitor = userEvent.setup();

    await visitor.click(await screen.findByRole('button', { name: 'Включить 2FA' }));

    expect(await screen.findByTestId('totp-secret')).toHaveTextContent('JBSWY3DPEHPK3PXP');
    expect(screen.getByAltText('QR-код для настройки 2FA')).toBeVisible();

    await visitor.type(screen.getByLabelText('Код из приложения'), '123456');
    await visitor.click(screen.getByRole('button', { name: 'Включить' }));

    const codes = await screen.findByTestId('recovery-codes');
    expect(codes).toHaveTextContent('aaaa-bbbb');
    expect(codes).toHaveTextContent('cccc-dddd');
    expect(screen.getByText('2FA включена. Сохраните коды восстановления.')).toBeVisible();

    expect(findRequest(fetchMock, { url: '/auth/2fa/enable', method: 'POST' })?.body).toEqual({
      code: '123456',
    });
  });

  it('logout-all вызывается по кнопке и уводит на /login', async () => {
    const fetchMock = installFetch([
      { match: '/api/v1/users/@me', response: () => json({ user }) },
      { match: '/api/v1/auth/sessions', response: () => json({ sessions }) },
      { match: '/api/v1/auth/logout-all', method: 'POST', response: () => json({ ok: true }) },
    ]);
    const confirm = vi.spyOn(window, 'confirm').mockReturnValue(true);

    const { router } = renderApp('/settings/account/security');
    const visitor = userEvent.setup();

    expect(await screen.findByTestId('sessions-list')).toHaveTextContent('Firefox on Linux');

    await visitor.click(screen.getByRole('button', { name: 'Выйти на всех устройствах' }));

    await waitFor(() => {
      expect(router.state.location.pathname).toBe('/login');
    });
    expect(confirm).toHaveBeenCalled();
    expect(
      recordedRequests(fetchMock).some(
        (request) => request.url.includes('/auth/logout-all') && request.method === 'POST',
      ),
    ).toBe(true);
  });

  it('смена пароля требует step-up и повторяется после подтверждения', async () => {
    let passwordAttempts = 0;
    const fetchMock = installFetch([
      { match: '/api/v1/users/@me', response: () => json({ user }) },
      { match: '/api/v1/auth/sessions', response: () => json({ sessions }) },
      {
        match: '/api/v1/users/@me/password',
        method: 'POST',
        response: () => {
          passwordAttempts += 1;
          return passwordAttempts === 1
            ? apiError('auth.step_up_required', 403)
            : json({ ok: true });
        },
      },
      { match: '/api/v1/auth/step-up', method: 'POST', response: () => json({ ok: true }) },
    ]);

    renderApp('/settings/account/security');
    const visitor = userEvent.setup();

    await visitor.type(await screen.findByLabelText('Текущий пароль'), 'old-password-1');
    await visitor.type(screen.getByLabelText('Новый пароль'), 'new-password-1');
    await visitor.type(screen.getByLabelText('Повторите новый пароль'), 'new-password-1');
    await visitor.click(screen.getByRole('button', { name: 'Сменить пароль' }));

    // Сервер ответил auth.step_up_required — появилась форма подтверждения.
    expect(await screen.findByText('Подтвердите личность')).toBeVisible();
    await visitor.type(screen.getByLabelText('Ваш пароль'), 'old-password-1');
    await visitor.click(screen.getByRole('button', { name: 'Подтвердить' }));

    expect(await screen.findByText('Пароль изменён.')).toBeVisible();
    expect(
      recordedRequests(fetchMock).filter(
        (request) => request.url.includes('/users/@me/password') && request.method === 'POST',
      ),
    ).toHaveLength(2);
  });

  it('профиль сохраняется через PATCH /users/@me', async () => {
    const fetchMock = installFetch([
      { match: '/api/v1/users/@me', response: () => json({ user }) },
      {
        match: '/api/v1/users/@me',
        method: 'PATCH',
        response: () => json({ user: { ...user, display_name: 'Алиса' } }),
      },
    ]);

    renderApp('/settings/account/profile');
    const visitor = userEvent.setup();

    const displayName = await screen.findByLabelText('Отображаемое имя');
    await visitor.clear(displayName);
    await visitor.type(displayName, 'Алиса');
    await visitor.click(screen.getByRole('button', { name: 'Сохранить' }));

    expect(await screen.findByText('Профиль сохранён.')).toBeVisible();
    const patchCall = findRequest(fetchMock, { url: '/users/@me', method: 'PATCH' });
    expect(patchCall?.body).toMatchObject({ display_name: 'Алиса' });
  });

  it('вкладка «Инстанс» скрыта от не-администратора', async () => {
    installFetch([{ match: '/api/v1/users/@me', response: () => json({ user }) }]);

    renderApp('/settings/account/profile');

    expect(await screen.findByRole('link', { name: 'Профиль' })).toBeVisible();
    expect(screen.queryByRole('link', { name: 'Инстанс' })).toBeNull();
  });

  it('вверху настроек — две соседние кнопки-переключателя', async () => {
    installFetch([
      { match: '/api/v1/users/@me', response: () => json({ user }) },
      { match: '/api/v1/users/@me/guilds', response: () => json({ guilds: [] }) },
    ]);

    const { router } = renderApp('/settings/account/profile');
    const account = await screen.findByRole('link', { name: 'Настройки сервера' });
    const servers = screen.getByRole('link', { name: 'Мои серверы' });

    expect(account).toHaveAttribute('aria-current', 'page');
    expect(servers).not.toHaveAttribute('aria-current');
    expect(screen.getByTestId('settings-switcher-backdrop')).toHaveClass('translate-x-0');

    await userEvent.click(servers);

    await waitFor(() => {
      expect(router.state.location.pathname).toBe('/settings/servers');
    });
    expect(screen.getByRole('link', { name: 'Мои серверы' })).toHaveAttribute(
      'aria-current',
      'page',
    );
    // Подложка переключателя уезжает ко второй кнопке без перезагрузки.
    expect(screen.getByTestId('settings-switcher-backdrop')).toHaveClass('translate-x-full');
  });

  it.each([
    ['/settings', '/settings/account/profile'],
    ['/settings/profile', '/settings/account/profile'],
    ['/settings/security', '/settings/account/security'],
    ['/settings/appearance', '/settings/account/appearance'],
    ['/settings/instance', '/settings/account/instance'],
  ])('старый путь %s редиректит на %s', async (from, to) => {
    installFetch([{ match: '/api/v1/users/@me', response: () => json({ user }) }]);

    const { router } = renderApp(from);

    await waitFor(() => {
      expect(router.state.location.pathname).toBe(to);
    });
  });

  it('администратор видит данные инстанса', async () => {
    const admin = makeUser({ is_instance_admin: true });
    installFetch([
      { match: '/api/v1/users/@me', response: () => json({ user: admin }) },
      {
        match: '/api/v1/instance/settings',
        response: () => json({ settings: { motd: 'привет' } }),
      },
      {
        match: '/api/v1/instance/guilds',
        response: () =>
          json({
            guilds: [{ id: 'g-1', name: 'Main', member_count: 3, owner_id: 'u', is_main: true }],
          }),
      },
      {
        match: '/api/v1/instance/users',
        response: () =>
          json({
            users: [
              {
                id: 'u-1',
                username: 'alice',
                display_name: 'Alice',
                is_instance_admin: true,
                created_at: '2026-09-01T00:00:00Z',
              },
            ],
          }),
      },
      {
        match: '/api/v1/instance/audit',
        response: () =>
          json({
            entries: [
              {
                id: 'a-1',
                actor_id: 'u-1',
                action: 'guild.create',
                created_at: '2026-09-01T00:00:00Z',
              },
            ],
          }),
      },
    ]);

    renderApp('/settings/account/instance');

    expect(await screen.findByTestId('instance-guilds')).toHaveTextContent('Main');
    expect(screen.getByTestId('instance-users')).toHaveTextContent('Alice');
    expect(screen.getByTestId('instance-audit')).toHaveTextContent('guild.create');
    expect(screen.getByText('motd')).toBeVisible();
  });
});