import { App as AntApp, ConfigProvider } from 'antd';
import { cleanup, render, screen, waitFor, within } from '@testing-library/react';
import userEvent from '@testing-library/user-event';
import { MemoryRouter, Route, Routes, useLocation } from 'react-router-dom';
import { afterEach, describe, expect, it, vi } from 'vitest';

import { AppContext } from '../../src/frontend/app-context';
import { I18nProvider } from '../../src/frontend/i18n/react';
import { api } from '../../src/frontend/services/api';
import { mailhubTheme } from '../../src/frontend/theme';
import type { AppContextValue } from '../../src/frontend/app-context';
import type { AddDomainPayload, Domain } from '../../src/frontend/types';
import Domains, { createDomainWithSetup, readDomainPagination } from '../../src/pages/Domains';
import DomainDetail from '../../src/pages/Domains/DomainDetail';

const defaultMatchMedia = window.matchMedia;

afterEach(() => {
  Object.defineProperty(window, 'matchMedia', { configurable: true, writable: true, value: defaultMatchMedia });
});

describe('Domains URL state and creation workflow', () => {
  it('normalizes unsupported pagination values', () => {
    expect(readDomainPagination(new URLSearchParams('page=-1&pageSize=999'))).toEqual({ page: 1, pageSize: 20 });
  });

  it('opens from create=1 and removes only the create flag when cancelled', async () => {
    const user = userEvent.setup();
    mockListApis(makeDomains(25));

    renderPage('/domains?create=1&q=keep');

    expect(await screen.findByText('添加发信域名')).toBeTruthy();
    await waitFor(() => {
      const params = currentSearchParams();
      expect(params.get('page')).toBe('1');
      expect(params.get('pageSize')).toBe('20');
    });
    const drawer = screen.getByRole('dialog', { name: '添加发信域名' });
    await user.click(within(drawer).getByRole('button', { name: /取\s*消/ }));

    await waitFor(() => expect(currentSearchParams().has('create')).toBe(false));
    const params = currentSearchParams();
    expect(params.get('q')).toBe('keep');
    expect(params.get('page')).toBe('1');
    expect(params.get('pageSize')).toBe('20');
  });

  it('always applies DNS after an automatic-mode creation', async () => {
    const created = makeDomain(1);
    const applied = { ...created, status: { ...created.status, verified: true } };
    const operations = {
      createDomain: vi.fn(async () => ({ domain: created })),
      applyDns: vi.fn(async () => ({ domain: applied, apply: { ok: true, results: [] } })),
      checkDomain: vi.fn(async () => ({ domain: created }))
    };

    const result = await createDomainWithSetup({ ...createPayload, dnsCredentialId: 9 }, operations);

    expect(operations.applyDns).toHaveBeenCalledWith(created.id);
    expect(operations.checkDomain).not.toHaveBeenCalled();
    expect(result).toMatchObject({ domain: applied, setup: 'complete', followUp: 'apply' });
  });

  it('checks DNS after a manual creation only when immediate checking is enabled', async () => {
    const created = makeDomain(1);
    const checked = { ...created, status: { ...created.status, checkedAt: '2026-07-14T01:00:00.000Z' } };
    const operations = {
      createDomain: vi.fn(async () => ({ domain: created })),
      applyDns: vi.fn(async () => ({ domain: created, apply: { ok: true, results: [] } })),
      checkDomain: vi.fn(async () => ({ domain: checked }))
    };

    const result = await createDomainWithSetup({ ...createPayload, immediateCheck: true }, operations);

    expect(operations.checkDomain).toHaveBeenCalledWith(created.id);
    expect(operations.applyDns).not.toHaveBeenCalled();
    expect(result).toMatchObject({ domain: checked, setup: 'complete', followUp: 'check' });
  });

  it('returns partial after a follow-up failure without turning it into a second create failure', async () => {
    const created = makeDomain(1);
    const operations = {
      createDomain: vi.fn(async () => ({ domain: created })),
      applyDns: vi.fn(async () => { throw new Error('provider unavailable'); }),
      checkDomain: vi.fn(async () => ({ domain: created }))
    };

    await expect(createDomainWithSetup({ ...createPayload, dnsCredentialId: 9 }, operations)).resolves.toMatchObject({
      domain: created,
      setup: 'partial',
      followUp: 'apply',
      error: 'provider unavailable'
    });
    expect(operations.createDomain).toHaveBeenCalledTimes(1);
  });

  it('treats apply.ok=false as partial and keeps the persisted per-record result', async () => {
    const created = makeDomain(1);
    const applied = {
      ...created,
      status: {
        ...created.status,
        apply: {
          ok: false,
          results: [{ key: 'dmarc', type: 'TXT', host: '_dmarc.example.test', ok: false, error: 'permission denied' }]
        }
      }
    } satisfies Domain;
    const operations = {
      createDomain: vi.fn(async () => ({ domain: created })),
      applyDns: vi.fn(async () => ({ domain: applied, apply: applied.status.apply })),
      checkDomain: vi.fn(async () => ({ domain: created }))
    };

    await expect(createDomainWithSetup({ ...createPayload, dnsCredentialId: 9 }, operations)).resolves.toMatchObject({
      domain: applied,
      setup: 'partial',
      followUp: 'apply',
      error: 'permission denied'
    });
  });

  it('still rejects when domain creation itself fails', async () => {
    const operations = {
      createDomain: vi.fn(async () => { throw new Error('domain already exists'); }),
      applyDns: vi.fn(async () => ({ domain: makeDomain(1), apply: { ok: true, results: [] } })),
      checkDomain: vi.fn(async () => ({ domain: makeDomain(1) }))
    };

    await expect(createDomainWithSetup({ ...createPayload, dnsCredentialId: 9 }, operations)).rejects.toThrow('domain already exists');
    expect(operations.applyDns).not.toHaveBeenCalled();
    expect(operations.checkDomain).not.toHaveBeenCalled();
  });

  it('keeps page and pageSize in the URL and resets page when a filter changes', async () => {
    const user = userEvent.setup();
    mockListApis(makeDomains(25));
    setViewport(390);

    renderPage('/domains?page=2&pageSize=10');

    expect(await screen.findByText('keep-11.example.test')).toBeTruthy();
    expect(screen.queryByText('keep-01.example.test')).toBeNull();
    await user.type(screen.getByLabelText('搜索域名'), '01');

    await waitFor(() => {
      const params = currentSearchParams();
      expect(params.get('q')).toBe('01');
      expect(params.get('page')).toBe('1');
      expect(params.get('pageSize')).toBe('10');
    });
    expect(await screen.findByText('keep-01.example.test')).toBeTruthy();
  });

  it('keeps the domain list usable when supporting integrations fail', async () => {
    const domain = { ...makeDomain(1), dnsCredentialId: 8 };
    vi.spyOn(api, 'domains').mockResolvedValue({ domains: [domain] });
    vi.spyOn(api, 'dnsCredentials').mockRejectedValue(new Error('DNS provider unavailable'));
    vi.spyOn(api, 'smtpRelays').mockResolvedValue({ relays: [] });
    vi.spyOn(api, 'events').mockRejectedValue(new Error('Activity service unavailable'));

    renderPage('/domains');

    expect(await screen.findByText(domain.domain)).toBeTruthy();
    expect(screen.getByText('部分辅助信息暂不可用')).toBeTruthy();
    expect(screen.getByText(/DNS provider unavailable/)).toBeTruthy();
    expect(screen.getAllByText('暂不可用').length).toBeGreaterThan(0);
    expect(screen.queryByText('域名列表加载失败')).toBeNull();
  });

  it('keeps stale domains visible but reports a primary-list refresh failure', async () => {
    const user = userEvent.setup();
    const domain = makeDomain(1);
    vi.spyOn(api, 'domains')
      .mockResolvedValueOnce({ domains: [domain] })
      .mockRejectedValueOnce(new Error('Domain service unavailable'));
    vi.spyOn(api, 'dnsCredentials')
      .mockRejectedValueOnce(new Error('DNS provider unavailable'))
      .mockResolvedValue({ credentials: [] });
    vi.spyOn(api, 'smtpRelays').mockResolvedValue({ relays: [] });
    vi.spyOn(api, 'events').mockResolvedValue({ events: [], total: 0, page: 1, pageSize: 100 });

    renderPage('/domains');

    expect(await screen.findByText(domain.domain)).toBeTruthy();
    const auxiliaryWarning = screen.getByText('部分辅助信息暂不可用').closest('.ant-alert');
    expect(auxiliaryWarning).not.toBeNull();
    await user.click(within(auxiliaryWarning as HTMLElement).getByRole('button', { name: '重试' }));

    const primaryError = await screen.findByText('域名列表加载失败');
    const primaryAlert = primaryError.closest('.ant-alert');
    expect(primaryAlert).not.toBeNull();
    expect(within(primaryAlert as HTMLElement).getByText('Domain service unavailable')).toBeTruthy();
    expect(screen.getByText(domain.domain)).toBeTruthy();
  });

  it('uses the same URL page slice on mobile and desktop', async () => {
    const domains = makeDomains(25);
    const expected = domains.slice(10, 20).map((domain) => domain.domain);
    mockListApis(domains);
    setViewport(390);

    renderPage('/domains?page=2&pageSize=10');
    await screen.findByText(expected[0]);
    const mobile = visibleDomainNames(domains);

    cleanup();
    setViewport(1024);
    renderPage('/domains?page=2&pageSize=10');
    await screen.findByText(expected[0]);
    const desktop = visibleDomainNames(domains);

    expect(mobile).toEqual(expected);
    expect(desktop).toEqual(expected);
  });

  it('shows partial setup guidance and each persisted DNS apply result', async () => {
    const domain = {
      ...makeDomain(7),
      dnsCredentialId: 4,
      status: {
        verified: false,
        records: [],
        apply: {
          ok: false,
          results: [
            { key: 'spf', type: 'TXT', host: 'example.test', ok: true, detail: 'updated' },
            { key: 'dmarc', type: 'TXT', host: '_dmarc.example.test', ok: false, error: 'permission denied' }
          ]
        }
      }
    } satisfies Domain;
    mockListApis([domain], [{ id: 4, userId: 1, name: 'Cloudflare', provider: 'cloudflare', zoneName: 'example.test', defaultTtl: 600, createdAt: domain.createdAt, updatedAt: domain.updatedAt }]);

    renderPage('/domains/7/dns?setup=partial');

    expect(await screen.findByText('域名已创建，但 DNS 后续操作需要处理')).toBeTruthy();
    const title = await screen.findByText('DNS 写入结果');
    const card = title.closest('.ant-card');
    expect(card).not.toBeNull();
    expect(within(card as HTMLElement).getByText('example.test')).toBeTruthy();
    expect(within(card as HTMLElement).getByText('_dmarc.example.test')).toBeTruthy();
    expect(within(card as HTMLElement).getByText('permission denied')).toBeTruthy();
    expect(within(card as HTMLElement).getByText('成功')).toBeTruthy();
    expect(within(card as HTMLElement).getByText('失败')).toBeTruthy();
  });
});

function renderPage(initialEntry: string) {
  return render(
    <ConfigProvider theme={mailhubTheme}>
      <AntApp>
        <I18nProvider>
          <AppContext.Provider value={context}>
            <MemoryRouter initialEntries={[initialEntry]}>
              <Routes>
                <Route path="/domains" element={<><Domains /><LocationProbe /></>} />
                <Route path="/domains/:id/:section" element={<><DomainDetail /><LocationProbe /></>} />
              </Routes>
            </MemoryRouter>
          </AppContext.Provider>
        </I18nProvider>
      </AntApp>
    </ConfigProvider>
  );
}

function LocationProbe() {
  const location = useLocation();
  return <output data-testid="location-search">{location.search}</output>;
}

function currentSearchParams() {
  return new URLSearchParams(screen.getByTestId('location-search').textContent || '');
}

function mockListApis(domains: Domain[], credentials: Awaited<ReturnType<typeof api.dnsCredentials>>['credentials'] = []) {
  vi.spyOn(api, 'domains').mockResolvedValue({ domains });
  vi.spyOn(api, 'dnsCredentials').mockResolvedValue({ credentials });
  vi.spyOn(api, 'smtpRelays').mockResolvedValue({ relays: [] });
  vi.spyOn(api, 'events').mockResolvedValue({ events: [], total: 0, page: 1, pageSize: 100 });
}

function setViewport(width: number) {
  Object.defineProperty(window, 'matchMedia', {
    configurable: true,
    writable: true,
    value: (query: string) => {
      const min = Number(query.match(/min-width:\s*(\d+)px/)?.[1] || 0);
      const max = Number(query.match(/max-width:\s*(\d+)px/)?.[1] || Number.POSITIVE_INFINITY);
      return {
        matches: width >= min && width <= max,
        media: query,
        onchange: null,
        addListener: () => undefined,
        removeListener: () => undefined,
        addEventListener: () => undefined,
        removeEventListener: () => undefined,
        dispatchEvent: () => false
      };
    }
  });
}

function visibleDomainNames(domains: Domain[]) {
  return domains.filter((domain) => screen.queryAllByText(domain.domain).length > 0).map((domain) => domain.domain);
}

function makeDomains(count: number) {
  return Array.from({ length: count }, (_, index) => makeDomain(index + 1));
}

function makeDomain(id: number): Domain {
  const ordinal = String(id).padStart(2, '0');
  return {
    id,
    userId: 1,
    dnsCredentialId: null,
    smtpRelayId: null,
    domain: `keep-${ordinal}.example.test`,
    selector: 'mh202607',
    verificationToken: `verification-${id}`,
    dkimPublic: 'public-key',
    senderHost: `mail-${ordinal}.example.test`,
    sendingIp: '192.0.2.10',
    spfExtra: '',
    dmarcPolicy: 'none',
    dmarcRua: '',
    catchAllAddress: '',
    status: { verified: false, records: [] },
    createdAt: '2026-07-14T00:00:00.000Z',
    updatedAt: '2026-07-14T00:00:00.000Z'
  };
}

const createPayload: AddDomainPayload = {
  domain: 'example.test',
  senderHost: 'mail.example.test',
  sendingIp: '192.0.2.10',
  selector: 'mh202607',
  dmarcPolicy: 'none',
  immediateCheck: true
};

const context: AppContextValue = {
  user: { id: 1, username: 'operator', email: 'operator@example.test', role: 'admin', status: 'active' },
  config: {
    appBaseUrl: 'https://mail.example.test',
    mailHostname: 'mail.example.test',
    sendingIp: '192.0.2.10',
    defaultSpfMechanisms: '',
    dmarcPolicy: 'none',
    dmarcRua: '',
    sendRequiresVerified: true,
    engagementTrackingEnabled: true,
    listUnsubscribeMailto: '',
    listUnsubscribeUrl: '',
    listUnsubscribePostEnabled: false,
    feedbackIdEnabled: false,
    reportAbuseTo: '',
    csaComplaintsTo: '',
    bounceAddress: '',
    bounceEnvelopeEnabled: false
  },
  refreshBootstrap: vi.fn(async () => undefined),
  logout: vi.fn(async () => undefined)
};
