/** @jest-environment jsdom */

import { chunkUpload } from '@/lib/chunk-upload'

import {
  completeBatchUpload,
  uploadBatchBuyerShow,
  uploadBatchVideo,
  uploadBatchXiaohongshu,
} from './special-batch-uploaders'
import { compressPreviewImage, compressVideoPreviewImage } from './image-processor'

jest.mock('@/lib/chunk-upload', () => ({
  chunkUpload: jest.fn(),
}))

jest.mock('./image-processor', () => ({
  compressPreviewImage: jest.fn(),
  compressVideoPreviewImage: jest.fn(),
}))

function createDeferred<T>() {
  let resolve!: (value: T) => void
  const promise = new Promise<T>((resolvePromise) => {
    resolve = resolvePromise
  })
  return { promise, resolve }
}

describe('uploadBatchVideo preview image contract', () => {
  const originalFetch = global.fetch

  afterEach(() => {
    global.fetch = originalFetch
    jest.clearAllMocks()
  })

  test('将每条视频的选填预览图传给完成接口', async () => {
    const sourcePreview = new File(['source-preview'], 'cover.png', { type: 'image/png' })
    const compressedPreview = new File(['compressed-preview'], 'cover.jpg', { type: 'image/jpeg' })
    ;(compressVideoPreviewImage as jest.Mock).mockResolvedValue(compressedPreview)
    ;(chunkUpload as jest.Mock).mockResolvedValue({ uploadId: 'upload-video-1' })

    const fetchMock = jest.fn()
      .mockResolvedValueOnce({
        ok: true,
        json: async () => ({
          existingFilePath: 'uploads/temp/upload-video-1/merged-video.mp4',
          fileName: 'video.mp4',
        }),
      })
      .mockResolvedValueOnce({
        ok: true,
        json: async () => ({ material: { id: 'material-video-1' } }),
      })
    global.fetch = fetchMock as unknown as typeof fetch

    const results = await uploadBatchVideo(
      [{
        file: new File(['video'], 'video.mp4', { type: 'video/mp4' }),
        productModel: 'SPU-VIDEO-001',
        previewImage: sourcePreview,
      }],
      '',
      '',
      '',
      jest.fn(),
    )

    expect(results[0].status).toBe('processing')
    expect(compressVideoPreviewImage).toHaveBeenCalledWith(sourcePreview)
    const uploadFormData = fetchMock.mock.calls[1][1].body as FormData
    expect(uploadFormData.get('previewImage')).toBeInstanceOf(File)
  })

  test('逐条完成视频处理后才开始下一条，避免并发解码预览图', async () => {
    const firstUploadResponse = createDeferred<any>()
    ;(chunkUpload as jest.Mock)
      .mockResolvedValueOnce({ uploadId: 'upload-video-1' })
      .mockResolvedValueOnce({ uploadId: 'upload-video-2' })

    const fetchMock = jest.fn()
      .mockResolvedValueOnce({
        ok: true,
        json: async () => ({ existingFilePath: 'uploads/video-1.mp4', fileName: 'video-1.mp4' }),
      })
      .mockReturnValueOnce(firstUploadResponse.promise)
      .mockResolvedValueOnce({
        ok: true,
        json: async () => ({ existingFilePath: 'uploads/video-2.mp4', fileName: 'video-2.mp4' }),
      })
      .mockResolvedValueOnce({ ok: true, json: async () => ({ material: { id: 'material-2' } }) })
    global.fetch = fetchMock as unknown as typeof fetch

    const uploadPromise = uploadBatchVideo(
      [
        { file: new File(['video-1'], 'video-1.mp4'), productModel: 'SPU-1' },
        { file: new File(['video-2'], 'video-2.mp4'), productModel: 'SPU-2' },
      ],
      '',
      '',
      '',
      jest.fn(),
    )

    for (let index = 0; index < 10 && fetchMock.mock.calls.length < 2; index += 1) {
      await Promise.resolve()
    }
    expect(chunkUpload).toHaveBeenCalledTimes(1)

    firstUploadResponse.resolve({ ok: true, json: async () => ({ material: { id: 'material-1' } }) })
    const results = await uploadPromise

    expect(chunkUpload).toHaveBeenCalledTimes(2)
    expect(results.map((result) => result.status)).toEqual(['processing', 'processing'])
  })

  test('已选择预览图但 base64 无法解析时中止创建素材', async () => {
    const fetchMock = jest.fn().mockResolvedValueOnce({
      ok: true,
      json: async () => ({ existingFilePath: 'uploads/video.mp4', fileName: 'video.mp4' }),
    })
    global.fetch = fetchMock as unknown as typeof fetch

    await expect(completeBatchUpload('upload-video-invalid-preview', {
      materialType: '淘系-逛逛视频',
      productModel: 'SPU-INVALID',
      fileName: 'video.mp4',
      previewImage: 'invalid-preview-data',
    })).rejects.toThrow('预览图数据无法解析')

    expect(fetchMock).toHaveBeenCalledTimes(1)
  })
})

describe('image-only batch upload memory boundary', () => {
  const originalFetch = global.fetch

  beforeEach(() => {
    ;(compressPreviewImage as jest.Mock).mockImplementation(async (file: File) => file)
  })

  afterEach(() => {
    global.fetch = originalFetch
    jest.clearAllMocks()
  })

  test('买家秀必须等上一批请求完成后才提交下一批', async () => {
    const firstResponse = createDeferred<any>()
    const fetchMock = jest.fn()
      .mockReturnValueOnce(firstResponse.promise)
      .mockResolvedValueOnce({
        ok: true,
        json: async () => ({ material: { id: 'buyer-2' } }),
      })
    global.fetch = fetchMock as unknown as typeof fetch

    const progress: number[] = []
    const uploadPromise = uploadBatchBuyerShow(
      [
        { productModel: 'BUYER-1', images: [new File(['one'], 'one.jpg', { type: 'image/jpeg' })] },
        { productModel: 'BUYER-2', images: [new File(['two'], 'two.jpg', { type: 'image/jpeg' })] },
      ],
      '',
      '',
      '',
      '',
      (value) => progress.push(value),
    )

    for (let index = 0; index < 10 && fetchMock.mock.calls.length < 1; index += 1) {
      await Promise.resolve()
    }
    expect(fetchMock).toHaveBeenCalledTimes(1)

    firstResponse.resolve({
      ok: true,
      json: async () => ({ material: { id: 'buyer-1' } }),
    })
    const results = await uploadPromise

    expect(fetchMock).toHaveBeenCalledTimes(2)
    expect(results.map((item) => item.productModel)).toEqual(['BUYER-1', 'BUYER-2'])
    expect(results.map((item) => item.status)).toEqual(['processing', 'processing'])
    expect(progress).toEqual([50, 100])
  })

  test('小红书某一批失败后仍按顺序继续下一批', async () => {
    const consoleError = jest.spyOn(console, 'error').mockImplementation(() => undefined)
    const fetchMock = jest.fn()
      .mockResolvedValueOnce({
        ok: false,
        status: 413,
        json: async () => ({ error: '图片批次过大' }),
      })
      .mockResolvedValueOnce({
        ok: true,
        json: async () => ({ material: { id: 'redbook-2' } }),
      })
    global.fetch = fetchMock as unknown as typeof fetch

    const results = await uploadBatchXiaohongshu(
      [
        { productModel: 'RED-1', images: [new File(['one'], 'one.jpg', { type: 'image/jpeg' })] },
        { productModel: 'RED-2', images: [new File(['two'], 'two.jpg', { type: 'image/jpeg' })] },
      ],
      '',
      '',
      '',
      '',
      jest.fn(),
    )

    expect(fetchMock).toHaveBeenCalledTimes(2)
    expect(results.map((item) => item.productModel)).toEqual(['RED-1', 'RED-2'])
    expect(results.map((item) => item.status)).toEqual(['failed', 'processing'])
    consoleError.mockRestore()
  })
})