import { describe, it, expect, vi } from 'vitest';
import { render, screen, fireEvent, waitFor } from '@testing-library/react';
import userEvent from '@testing-library/user-event';
import { MemoryRouter, Routes, Route } from 'react-router-dom';
import { Provider } from 'react-redux';
import { configureStore } from '@reduxjs/toolkit';
import { ConfigProvider } from 'antd';
import authReducer from '../../store/slices/authSlice';
import LoginPage from './LoginPage';

function makeStore() {
  return configureStore({ reducer: { auth: authReducer } });
}

function renderLogin() {
  const store = makeStore();
  return {
    store,
    ...render(
      <Provider store={store}>
        <ConfigProvider>
          <MemoryRouter initialEntries={['/login']}>
            <Routes>
              <Route path="/login" element={<LoginPage />} />
              <Route path="/users" element={<div data-testid="users-page">USERS</div>} />
            </Routes>
          </MemoryRouter>
        </ConfigProvider>
      </Provider>,
    ),
  };
}

async function fillAndSubmit(username: string, password: string) {
  const user = userEvent.setup();
  await user.clear(screen.getByPlaceholderText('请输入你的用户名'));
  await user.type(screen.getByPlaceholderText('请输入你的用户名'), username);
  await user.clear(screen.getByPlaceholderText('请输入你的密码'));
  await user.type(screen.getByPlaceholderText('请输入你的密码'), password);
  // companyCode 默认已选 HQ；改其他公司需要复杂的 AntD Select 交互，单独的测试用 MSW 路径模拟
  await user.click(screen.getByTestId('login-submit'));
}

describe('LoginPage', () => {
  it('renders login page with form', () => {
    renderLogin();
    expect(screen.getByText('用户登录')).toBeInTheDocument();
    expect(screen.getByTestId('login-form')).toBeInTheDocument();
    expect(screen.getByTestId('login-submit')).toBeInTheDocument();
  });

  it('success flow: dispatches setSession and navigates to /users', async () => {
    const { store } = renderLogin();
    await fillAndSubmit('alice', 'Password1!');
    await waitFor(() => expect(screen.queryByTestId('users-page')).toBeInTheDocument(), {
      timeout: 3000,
    });
    expect(store.getState().auth.accessToken).toBe('fake-jwt');
    expect(store.getState().auth.userInfo?.username).toBe('alice');
  });

  it('bad credentials: shows 40101 error message', async () => {
    renderLogin();
    await fillAndSubmit('alice', 'WRONG');
    await waitFor(() =>
      expect(screen.getByText('用户名或密码错误')).toBeInTheDocument(),
    );
  });

  it('locked account: shows 42301 with lockUntil time', async () => {
    renderLogin();
    await fillAndSubmit('locked', 'X');
    await waitFor(() => {
      const alert = screen.getByTestId('login-error-alert');
      expect(alert.textContent).toMatch(/账号已锁定/);
      expect(alert.textContent).toMatch(/12:00/);
    });
  });

  it('deleted account: shows 40103 message', async () => {
    renderLogin();
    await fillAndSubmit('deleted', 'X');
    await waitFor(() =>
      expect(screen.getByText('账号已被作废，禁止登录')).toBeInTheDocument(),
    );
  });

  it('empty fields: form-level required errors', async () => {
    renderLogin();
    const user = userEvent.setup();
    await user.click(screen.getByTestId('login-submit'));
    await waitFor(() => expect(screen.getByText('请输入用户名')).toBeInTheDocument());
    expect(screen.getByText('请输入密码')).toBeInTheDocument();
  });

  it('locked account: submit stays disabled while lockUntil in the future', async () => {
    renderLogin();
    await fillAndSubmit('locked', 'X');
    await waitFor(() => expect(screen.getByTestId('login-error-alert')).toBeInTheDocument());
    // 锁定后 submit 应处于 disabled 态（lockUntil = 2030-01-01 远在未来）
    const submitBtn = screen.getByTestId('login-submit') as HTMLButtonElement;
    expect(submitBtn).toBeDisabled();
  });

  it('form fields are labeled (a11y)', () => {
    renderLogin();
    expect(screen.getByLabelText('用户名')).toBeInTheDocument();
    expect(screen.getByLabelText('密码')).toBeInTheDocument();
    expect(screen.getByLabelText('公司')).toBeInTheDocument();
  });
});