import ElementPlus from 'element-plus'
import { createPinia, setActivePinia } from 'pinia'
import { enableAutoUnmount, flushPromises, mount } from '@vue/test-utils'
import { afterAll, afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
import {
  getPlatformUserOptions,
  listPlatformManagedUsers,
  type PlatformManagedUser,
} from '@/modules/iam/api/platformIam'
import { useAccessPreviewStore } from '@/core/access/accessPreview'
import { useAuthStore } from '@/core/auth/auth'
import InternalUsersView from './InternalUsersView.vue'

vi.mock('@/modules/iam/api/platformIam', () => ({
  listPlatformManagedUsers: vi.fn(),
  getPlatformUserOptions: vi.fn(),
  createPlatformManagedUser: vi.fn(),
  updatePlatformManagedUser: vi.fn(),
  changePlatformManagedUserStatus: vi.fn(),
  resetPlatformManagedUserPassword: vi.fn(),
}))

class ResizeObserverStub implements ResizeObserver {
  observe() {}
  unobserve() {}
  disconnect() {}
}

function createMemoryStorage(): Storage {
  const values = new Map<string, string>()
  return {
    get length() { return values.size },
    clear: () => values.clear(),
    getItem: (key) => values.get(key) ?? null,
    key: (index) => [...values.keys()][index] ?? null,
    removeItem: (key) => values.delete(key),
    setItem: (key, value) => values.set(key, value),
  }
}

const user: PlatformManagedUser = {
  membershipId: '30', userId: '20', authUserId: '10', username: 'zhangwei', displayName: '张伟',
  phone: '13800138000', email: 'zhangwei@example.com', tenantId: '0', tenantName: '平台',
  memberType: 'INTERNAL', memberNo: 'PLATFORM-30', status: 'ACTIVE', roleIds: ['40'],
  roleNames: ['运营管理员'], lastLoginAt: '2026-06-01T10:30:00',
  protectedAccount: false,
}

async function mountView() {
  vi.stubGlobal('localStorage', createMemoryStorage())
  vi.stubGlobal('sessionStorage', createMemoryStorage())
  const pinia = createPinia()
  setActivePinia(pinia)
  const auth = useAuthStore()
  auth.token = 'token'
  auth.permissions = [
    'platform:user:list', 'platform:user:create', 'platform:user:edit',
    'platform:user:status', 'platform:user:reset-password', 'platform:user:grant-role',
  ]
  useAccessPreviewStore().initializeAfterLogin()
  const wrapper = mount(InternalUsersView, {
    attachTo: document.body,
    global: { plugins: [pinia, ElementPlus] },
  })
  await flushPromises()
  return wrapper
}

enableAutoUnmount(afterEach)
afterAll(() => vi.unstubAllGlobals())

describe('InternalUsersView platform internal user management', () => {
  beforeEach(() => {
    vi.stubGlobal('ResizeObserver', ResizeObserverStub)
    document.body.innerHTML = ''
    vi.mocked(listPlatformManagedUsers).mockReset().mockResolvedValue({
      records: [user], page: 1, size: 10, total: 21, pages: 3,
    })
    vi.mocked(getPlatformUserOptions).mockReset().mockResolvedValue({
      tenants: [
        { id: '0', name: '平台', status: 'ACTIVE' },
        { id: '10001', name: '华远贸易', status: 'ACTIVE' },
      ],
      roles: [
        { id: '40', tenantId: '0', name: '运营管理员', status: 'ACTIVE' },
        { id: '41', tenantId: '10001', name: '租户管理员', status: 'ACTIVE' },
      ],
    })
  })

  it('loads a server page and only renders internal-user fields', async () => {
    const wrapper = await mountView()

    expect(listPlatformManagedUsers).toHaveBeenCalledOnce()
    expect(listPlatformManagedUsers).toHaveBeenCalledWith({ page: 1, size: 10 })
    expect(getPlatformUserOptions).toHaveBeenCalledOnce()
    expect(wrapper.text()).toContain('zhangwei')
    expect(wrapper.text()).toContain('张伟')
    expect(wrapper.text()).toContain('运营管理员')
    expect(wrapper.text()).toContain('2026-06-01 10:30')
    expect(wrapper.find('[aria-label="用户筛选"]').exists()).toBe(true)
    expect(wrapper.find('[aria-label="内部用户列表"]').exists()).toBe(true)
    expect(wrapper.text()).toContain('共 21 条')
    expect(wrapper.text()).toContain('查询')
    expect(wrapper.text()).toContain('重置')
    expect(wrapper.text()).not.toContain('认证用户 ID')
    expect(wrapper.text()).not.toContain('成员编号')
    expect(wrapper.text()).not.toContain('所属租户')
    expect(wrapper.text()).not.toContain('华远贸易')
  })

  it('opens an internal-user form without a tenant selector', async () => {
    const wrapper = await mountView()
    const createButton = wrapper.findAll('button').find((button) => button.text().trim() === '新增用户')
    await createButton?.trigger('click')
    await flushPromises()

    expect(document.querySelector('input[placeholder="登录用户名"]')).not.toBeNull()
    expect(document.querySelector('input[placeholder="真实姓名"]')).not.toBeNull()
    expect(document.querySelector('input[placeholder="手机号码"]')).not.toBeNull()
    expect(document.querySelector('input[placeholder="邮箱地址"]')).not.toBeNull()
    expect(document.body.textContent).not.toContain('所属租户')
    expect(document.body.textContent).toContain('初始密码')
    expect(document.body.textContent).toContain('确认添加')
  })

  it('requests server-side pages and filters instead of slicing locally', async () => {
    const wrapper = await mountView()
    await wrapper.find('button[aria-label="第 2 页"]').trigger('click')
    await flushPromises()

    expect(listPlatformManagedUsers).toHaveBeenLastCalledWith({ page: 2, size: 10 })

    await wrapper.find('input[aria-label="用户关键词"]').setValue('  张伟  ')
    const searchButton = wrapper.findAll('button').find((button) => button.text().trim() === '查询')
    await searchButton?.trigger('click')
    await flushPromises()

    expect(listPlatformManagedUsers).toHaveBeenLastCalledWith({ page: 1, size: 10, keyword: '张伟' })
  })

  it('shows a recoverable API error without fake users', async () => {
    vi.mocked(listPlatformManagedUsers).mockRejectedValueOnce(new Error('Gateway unavailable'))
    const wrapper = await mountView()

    expect(wrapper.text()).toContain('内部用户列表加载失败，请稍后重试')
    expect(wrapper.text()).not.toContain('Gateway unavailable')
    expect(wrapper.text()).toContain('重新加载')
    expect(wrapper.text()).not.toContain('zhangwei')
  })
})