/** @jest-environment node */

import {
  generatePreviewImages,
  resolveOwnedTaskMaterialSourceFiles,
  resolveUniqueZipEntryName,
  TASK_MATERIAL_PREVIEW_SOURCE_MAX_BYTES,
} from '@/lib/task-material-processor'
import { uploadPublicDisplayToS3 } from '@/lib/public-display'
import { uploadToS3 } from '@/lib/s3'
import { compressImage } from '@/lib/image-processor'
import { readBoundedRegularFile } from '@/lib/bounded-file-reader'
import { lstat } from 'fs/promises'
import { getOwnedUploadedFile } from '@/lib/upload-sessions'

jest.mock('fs/promises', () => ({
  readFile: jest.fn(),
  mkdir: jest.fn(),
  unlink: jest.fn(),
  rm: jest.fn(),
  lstat: jest.fn(),
}))

jest.mock('@/lib/upload-sessions', () => ({
  getUploadedFile: jest.fn(),
  getOwnedUploadedFile: jest.fn(),
}))

jest.mock('@/lib/upload-sessions-redis', () => ({
  deleteUploadSession: jest.fn(),
}))

jest.mock('@/lib/image-processor', () => ({
  compressImage: jest.fn(),
}))

jest.mock('@/lib/bounded-file-reader', () => ({
  readBoundedRegularFile: jest.fn(),
}))

jest.mock('@/lib/public-display', () => ({
  ...jest.requireActual('@/lib/public-display'),
  uploadPublicDisplayToS3: jest.fn(),
}))

jest.mock('@/lib/s3', () => ({
  uploadToS3: jest.fn(),
  deleteFromS3: jest.fn(),
}))

describe('task-material-processor', () => {
  const { getUploadedFile } = jest.requireMock('@/lib/upload-sessions') as {
    getUploadedFile: jest.Mock
  }
  let dateNowSpy: jest.SpyInstance
  let mathRandomSpy: jest.SpyInstance

  beforeEach(() => {
    jest.clearAllMocks()
    ;(readBoundedRegularFile as jest.Mock).mockResolvedValue(Buffer.from('source-image'))
    getUploadedFile.mockResolvedValue('/tmp/uploaded/image.png')
    ;(compressImage as jest.Mock).mockResolvedValue(Buffer.from('compressed-image'))
    ;(uploadPublicDisplayToS3 as jest.Mock).mockResolvedValue(
      'https://s3.jiansun.vip/gongxiangpan/public-display/materials/preview-123.webp',
    )
    ;(uploadToS3 as jest.Mock).mockResolvedValue(
      'https://s3.jiansun.vip/gongxiangpan/product-package/preview-123.webp',
    )
    dateNowSpy = jest.spyOn(Date, 'now').mockReturnValue(1711111111111)
    mathRandomSpy = jest.spyOn(Math, 'random').mockReturnValue(0.123456789)
  })

  afterEach(() => {
    dateNowSpy.mockRestore()
    mathRandomSpy.mockRestore()
  })

  test('generatePreviewImages 应将任务类预览图写入 public-display materials 前缀', async () => {
    const result = await generatePreviewImages(
      [{ uploadId: 'upload-1', fileName: 'origin.png' }],
      '任务-3D原图',
    )

    expect(result).toEqual([
      'https://s3.jiansun.vip/gongxiangpan/public-display/materials/preview-123.webp',
    ])
    expect(uploadPublicDisplayToS3).toHaveBeenCalledWith(
      Buffer.from('compressed-image'),
      expect.stringMatching(/^materials\/preview-1711111111111-0-[a-z0-9]+\.webp$/),
      'image/webp',
    )
    expect(readBoundedRegularFile).toHaveBeenCalledWith(
      '/tmp/uploaded/image.png',
      expect.objectContaining({
        maxBytes: 100 * 1024 * 1024,
        label: '预览源图片 origin.png',
      }),
    )
    expect(uploadToS3).not.toHaveBeenCalled()
  })

  test('generatePreviewImages 使用调用方已验证路径时不再二次解析无 owner 会话', async () => {
    await generatePreviewImages(
      [{ uploadId: 'upload-1', fileName: 'origin.png', filePath: '/verified/origin.png' }],
      '任务-页面',
    )

    expect(getUploadedFile).not.toHaveBeenCalled()
    expect(readBoundedRegularFile).toHaveBeenCalledWith(
      '/verified/origin.png',
      expect.any(Object),
    )
  })

  test('任务图片源文件以磁盘实际大小为准并拒绝客户端伪造小尺寸', async () => {
    ;(getOwnedUploadedFile as jest.Mock).mockResolvedValue('/verified/oversized.png')
    ;(lstat as jest.Mock).mockResolvedValue({
      isSymbolicLink: () => false,
      isFile: () => true,
      size: TASK_MATERIAL_PREVIEW_SOURCE_MAX_BYTES + 1,
    })

    await expect(resolveOwnedTaskMaterialSourceFiles({
      userId: 'user-1',
      assets: [{ uploadId: 'upload-1', fileName: 'oversized.png', fileSize: 1 }],
    })).rejects.toMatchObject({ status: 413 })
  })

  test('任务图片源文件拒绝重复 uploadId 和超过 60 张', async () => {
    await expect(resolveOwnedTaskMaterialSourceFiles({
      userId: 'user-1',
      assets: [
        { uploadId: 'duplicate', fileName: 'one.png' },
        { uploadId: 'duplicate', fileName: 'two.png' },
      ],
    })).rejects.toThrow('上传会话编号重复')

    await expect(resolveOwnedTaskMaterialSourceFiles({
      userId: 'user-1',
      assets: Array.from({ length: 61 }, (_, index) => ({
        uploadId: `upload-${index}`,
        fileName: `${index}.png`,
      })),
    })).rejects.toThrow('最多上传 60 张')
  })

  test('resolveUniqueZipEntryName 应避免同名文件在解压时互相覆盖', () => {
    const usedNames = new Set<string>()

    expect(resolveUniqueZipEntryName('01.jpg', 0, usedNames)).toBe('01.jpg')
    expect(resolveUniqueZipEntryName('01.jpg', 1, usedNames)).toBe('01-2.jpg')
    expect(resolveUniqueZipEntryName('01.JPG', 2, usedNames)).toBe('01-3.JPG')
    expect(resolveUniqueZipEntryName('主图/01.jpg', 3, usedNames)).toBe('主图_01.jpg')
    expect(resolveUniqueZipEntryName('', 4, usedNames)).toBe('file-005')
  })
})