/** @jest-environment node */

import { mkdtemp, readFile, rm, writeFile } from 'fs/promises'
import os from 'os'
import path from 'path'
import { existsSync } from 'fs'
import { prepareOperationsGMaterialFiles } from '@/lib/material-access-scope-storage'
import { downloadS3ObjectToFile } from '@/lib/s3'
import { resolveStoredUploadPath } from '@/lib/upload-paths'

jest.mock('@/lib/s3', () => ({ downloadS3ObjectToFile: jest.fn(), uploadToS3: jest.fn(), uploadFileToS3: jest.fn() }))

let root: string
const prior = { upload: process.env.UPLOAD_DIR, domain: process.env.S3_PUBLIC_DOMAIN, prefix: process.env.S3_FILE_PATH }
beforeEach(async () => {
  root = await mkdtemp(path.join(os.tmpdir(), 'material-scope-storage-'))
  process.env.UPLOAD_DIR = root
  process.env.S3_PUBLIC_DOMAIN = 'https://storage.scope.local'
  process.env.S3_FILE_PATH = 'scope'
  jest.clearAllMocks()
  ;(downloadS3ObjectToFile as jest.Mock).mockImplementation(async (url: string, destination: string) => {
    await writeFile(destination, Buffer.from(`object:${url}`))
  })
})
afterEach(async () => {
  for (const [key, value] of Object.entries({ UPLOAD_DIR: prior.upload, S3_PUBLIC_DOMAIN: prior.domain, S3_FILE_PATH: prior.prefix })) {
    if (value === undefined) delete process.env[key]
    else process.env[key] = value
  }
  expect(root.startsWith(path.join(os.tmpdir(), 'material-scope-storage-'))).toBe(true)
  await rm(root, { recursive: true, force: true })
})

test('更改范围时复制公开原件与预览，素材、资产和 SKU 共享同一份受保护文件', async () => {
  const preview = 'https://storage.scope.local/scope/preview.webp'
  const source = 'https://storage.scope.local/scope/source.zip'
  const result = await prepareOperationsGMaterialFiles({
    id: 'material-1', previewUrl: preview, zipFilePath: source, zipFileName: 'source.zip', displayImages: [preview],
  }, [{ id: 'asset-1', fileUrl: preview }], [{ id: 'sku-1', filePath: source, previewUrl: preview }])
  expect(downloadS3ObjectToFile).toHaveBeenCalledTimes(2)
  expect(result.assetFiles[0].fileUrl).toBe(result.materialFiles.previewUrl)
  expect(result.skuFiles[0].previewUrl).toBe(result.materialFiles.previewUrl)
  expect(result.skuFiles[0].filePath).toBe(result.materialFiles.zipFilePath)
  expect(result.publicUrls).toEqual([preview, source])
  const stored = result.materialFiles.previewUrl as string
  expect(stored).toMatch(/^uploads\/materials\/material-1\/protected-display\//)
  expect(await readFile(resolveStoredUploadPath(stored), 'utf8')).toBe(`object:${preview}`)
})

test('白底图的派生预览迁入可按原图定位的鉴权目录', async () => {
  const result = await prepareOperationsGMaterialFiles({ id: 'material-1' }, [{
    id: 'asset-1', fileUrl: 'uploads/materials/material-1/white-background/sku-1/front.webp',
  }])
  const expected = 'uploads/materials/material-1/protected-display/white-background/material-1/sku-1/front.webp'
  expect(existsSync(resolveStoredUploadPath(expected))).toBe(true)
  expect(result.publicUrls).toEqual(['https://storage.scope.local/scope/public-display/white-background/material-1/sku-1/front.webp'])
  expect(result.assetFiles).toEqual([])
})