/** @jest-environment jsdom */

import { act, render, screen, waitFor } from '@testing-library/react'
import userEvent from '@testing-library/user-event'
import { useSession } from 'next-auth/react'
import EditMaterialPage from '@/app/edit/[id]/page'

const mockPush = jest.fn()
const mockBack = jest.fn()
const mockRouter = {
  push: mockPush,
  back: mockBack,
}

jest.mock('next-auth/react', () => ({
  useSession: jest.fn(),
}))

jest.mock('next/navigation', () => ({
  useRouter: () => mockRouter,
}))

jest.mock('@/components/Header', () => ({
  __esModule: true,
  default: () => <a href="/">返回素材库</a>,
}))

jest.mock('@/components/upload/TaskReferenceFields', () => ({
  __esModule: true,
  default: () => null,
}))

const material = {
  id: 'material-1',
  userId: 'user-1',
  productModel: 'SPU-001',
  reportTitle: null,
  categoryName: '店铺A',
  sceneName: '场景A',
  platformName: 'Amazon',
  productCategoryName: '',
  materialType: '3D场景',
  renderer: 'CR',
  authorName: '测试作者',
  previewUrl: null,
  taskNo: null,
  dingtalkApprovalNo: null,
  taskStatus: null,
  taskFetchedAt: null,
  isFullSet: false,
  taskDetailSourceType: null,
  taskDetailRequesterUserId: null,
  taskDetailRequesterName: null,
  canEdit: true,
}

function jsonResponse(payload: unknown, status = 200) {
  return Promise.resolve({
    ok: status >= 200 && status < 300,
    status,
    json: async () => payload,
  } as Response)
}

function referencePayload(url: string) {
  if (url.endsWith('/api/categories')) {
    return [{ id: 'category-1', name: '店铺A' }]
  }
  if (url.endsWith('/api/scenes')) {
    return [{ id: 'scene-1', name: '场景A' }]
  }
  if (url.endsWith('/api/platforms')) {
    return [{ id: 'platform-1', name: 'Amazon', count: 1 }]
  }
  if (url.endsWith('/api/product-categories')) {
    return []
  }
  return [{ id: 'user-1', username: 'author', displayName: '测试作者' }]
}

describe('EditMaterialPage', () => {
  beforeEach(() => {
    jest.clearAllMocks()
    ;(useSession as jest.Mock).mockReturnValue({
      data: { user: { id: 'user-1', role: 'USER' } },
      status: 'authenticated',
    })
    Element.prototype.scrollIntoView = jest.fn()
  })

  test('素材本体先于可选项显示，选项完成前禁止保存', async () => {
    let releaseReferences: (() => void) | undefined
    const referenceGate = new Promise<void>((resolve) => {
      releaseReferences = resolve
    })
    global.fetch = jest.fn((input: RequestInfo | URL) => {
      const url = String(input)
      if (url.includes('/api/materials/material-1')) {
        return jsonResponse(material)
      }
      return referenceGate.then(() => jsonResponse(referencePayload(url)))
    }) as jest.Mock

    render(<EditMaterialPage params={{ id: 'material-1' }} />)

    expect(await screen.findByLabelText('产品型号 *')).toHaveValue('SPU-001')
    expect(screen.getByText('正在加载店铺、场景和人员选项…')).toBeInTheDocument()
    expect(screen.getByRole('button', { name: '保存修改' })).toBeDisabled()

    await act(async () => {
      releaseReferences?.()
      await referenceGate
    })

    await waitFor(() => {
      expect(screen.queryByText('正在加载店铺、场景和人员选项…')).not.toBeInTheDocument()
    })
    expect(screen.getByRole('button', { name: '保存修改' })).toBeEnabled()
  })

  test('部分选项失败时保留当前值、显示重试并禁止保存', async () => {
    global.fetch = jest.fn((input: RequestInfo | URL) => {
      const url = String(input)
      if (url.includes('/api/materials/material-1')) {
        return jsonResponse(material)
      }
      if (url.endsWith('/api/categories')) {
        return jsonResponse({ error: '店铺读取失败' }, 500)
      }
      return jsonResponse(referencePayload(url))
    }) as jest.Mock

    render(<EditMaterialPage params={{ id: 'material-1' }} />)

    const categorySelect = await screen.findByLabelText('店铺 *')
    await screen.findByText('店铺加载失败，当前值已保留。')

    expect(categorySelect).toHaveValue('店铺A')
    expect(categorySelect).toBeDisabled()
    expect(screen.getByRole('button', { name: '重新加载' })).toBeInTheDocument()
    expect(screen.getByRole('button', { name: '保存修改' })).toBeDisabled()
  })

  test('修改后取消会使用统一弹窗，刷新保护与移动端粘性操作区同时生效', async () => {
    const user = userEvent.setup()
    global.fetch = jest.fn((input: RequestInfo | URL) => {
      const url = String(input)
      if (url.includes('/api/materials/material-1')) {
        return jsonResponse(material)
      }
      return jsonResponse(referencePayload(url))
    }) as jest.Mock

    render(<EditMaterialPage params={{ id: 'material-1' }} />)

    const productModelInput = await screen.findByLabelText('产品型号 *')
    await waitFor(() => {
      expect(screen.getByRole('button', { name: '保存修改' })).toBeEnabled()
    })
    await user.clear(productModelInput)
    await user.type(productModelInput, 'SPU-002')

    const beforeUnloadEvent = new Event('beforeunload', { cancelable: true })
    window.dispatchEvent(beforeUnloadEvent)
    expect(beforeUnloadEvent.defaultPrevented).toBe(true)

    const saveButton = screen.getByRole('button', { name: '保存修改' })
    expect(saveButton.closest('.sticky')).not.toBeNull()

    await user.click(screen.getByRole('button', { name: '取消' }))
    expect(await screen.findByText('放弃未保存的修改？')).toBeInTheDocument()
    await user.click(screen.getByRole('button', { name: '继续编辑' }))
    expect(mockBack).not.toHaveBeenCalled()

    await user.click(screen.getByRole('button', { name: '取消' }))
    await user.click(await screen.findByRole('button', { name: '放弃修改' }))
    expect(mockBack).toHaveBeenCalledTimes(1)
  })
})