/* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */

import { expect } from 'chai'
import { pathExists, readdir, stat } from 'fs-extra'
import { join } from 'path'
import { buildAbsoluteFixturePath } from '@shared/core-utils'
import { sha1 } from '@shared/extra-utils'
import { HttpStatusCode, VideoPrivacy } from '@shared/models'
import { cleanupTests, createSingleServer, PeerTubeServer, setAccessTokensToServers, setDefaultVideoChannel } from '@shared/server-commands'

// Most classic resumable upload tests are done in other test suites

describe('Test resumable upload', function () {
  const defaultFixture = 'video_short.mp4'
  let server: PeerTubeServer
  let rootId: number
  let userAccessToken: string
  let userChannelId: number

  async function buildSize (fixture: string, size?: number) {
    if (size !== undefined) return size

    const baseFixture = buildAbsoluteFixturePath(fixture)
    return (await stat(baseFixture)).size
  }

  async function prepareUpload (options: {
    channelId?: number
    token?: string
    size?: number
    originalName?: string
    lastModified?: number
  } = {}) {
    const { token, originalName, lastModified } = options

    const size = await buildSize(defaultFixture, options.size)

    const attributes = {
      name: 'video',
      channelId: options.channelId ?? server.store.channel.id,
      privacy: VideoPrivacy.PUBLIC,
      fixture: defaultFixture
    }

    const mimetype = 'video/mp4'

    const res = await server.videos.prepareResumableUpload({ token, attributes, size, mimetype, originalName, lastModified })

    return res.header['location'].split('?')[1]
  }

  async function sendChunks (options: {
    token?: string
    pathUploadId: string
    size?: number
    expectedStatus?: HttpStatusCode
    contentLength?: number
    contentRange?: string
    contentRangeBuilder?: (start: number, chunk: any) => string
    digestBuilder?: (chunk: any) => string
  }) {
    const { token, pathUploadId, expectedStatus, contentLength, contentRangeBuilder, digestBuilder } = options

    const size = await buildSize(defaultFixture, options.size)
    const absoluteFilePath = buildAbsoluteFixturePath(defaultFixture)

    return server.videos.sendResumableChunks({
      token,
      pathUploadId,
      videoFilePath: absoluteFilePath,
      size,
      contentLength,
      contentRangeBuilder,
      digestBuilder,
      expectedStatus
    })
  }

  async function checkFileSize (uploadIdArg: string, expectedSize: number | null) {
    const uploadId = uploadIdArg.replace(/^upload_id=/, '')

    const subPath = join('tmp', 'resumable-uploads', `${rootId}-${uploadId}.mp4`)
    const filePath = server.servers.buildDirectory(subPath)
    const exists = await pathExists(filePath)

    if (expectedSize === null) {
      expect(exists).to.be.false
      return
    }

    expect(exists).to.be.true

    expect((await stat(filePath)).size).to.equal(expectedSize)
  }

  async function countResumableUploads () {
    const subPath = join('tmp', 'resumable-uploads')
    const filePath = server.servers.buildDirectory(subPath)

    const files = await readdir(filePath)
    return files.length
  }

  before(async function () {
    this.timeout(30000)

    server = await createSingleServer(1)
    await setAccessTokensToServers([ server ])
    await setDefaultVideoChannel([ server ])

    const body = await server.users.getMyInfo()
    rootId = body.id

    {
      userAccessToken = await server.users.generateUserAndToken('user1')
      const { videoChannels } = await server.users.getMyInfo({ token: userAccessToken })
      userChannelId = videoChannels[0].id
    }

    await server.users.update({ userId: rootId, videoQuota: 10_000_000 })
  })

  describe('Directory cleaning', function () {

    // FIXME: https://github.com/kukhariev/node-uploadx/pull/524/files#r852989382
    // it('Should correctly delete files after an upload', async function () {
    //   const uploadId = await prepareUpload()
    //   await sendChunks({ pathUploadId: uploadId })
    //   await server.videos.endResumableUpload({ pathUploadId: uploadId })

    //   expect(await countResumableUploads()).to.equal(0)
    // })

    it('Should not delete files after an unfinished upload', async function () {
      await prepareUpload()

      expect(await countResumableUploads()).to.equal(2)
    })

    it('Should not delete recent uploads', async function () {
      await server.debug.sendCommand({ body: { command: 'remove-dandling-resumable-uploads' } })

      expect(await countResumableUploads()).to.equal(2)
    })

    it('Should delete old uploads', async function () {
      await server.debug.sendCommand({ body: { command: 'remove-dandling-resumable-uploads' } })

      expect(await countResumableUploads()).to.equal(0)
    })
  })

  describe('Resumable upload and chunks', function () {

    it('Should accept the same amount of chunks', async function () {
      const uploadId = await prepareUpload()
      await sendChunks({ pathUploadId: uploadId })

      await checkFileSize(uploadId, null)
    })

    it('Should not accept more chunks than expected', async function () {
      const uploadId = await prepareUpload({ size: 100 })

      await sendChunks({ pathUploadId: uploadId, expectedStatus: HttpStatusCode.CONFLICT_409 })
      await checkFileSize(uploadId, 0)
    })

    it('Should not accept more chunks than expected with an invalid content length/content range', async function () {
      const uploadId = await prepareUpload({ size: 1500 })

      // Content length check can be different depending on the node version
      try {
        await sendChunks({ pathUploadId: uploadId, expectedStatus: HttpStatusCode.CONFLICT_409, contentLength: 1000 })
        await checkFileSize(uploadId, 0)
      } catch {
        await sendChunks({ pathUploadId: uploadId, expectedStatus: HttpStatusCode.BAD_REQUEST_400, contentLength: 1000 })
        await checkFileSize(uploadId, 0)
      }
    })

    it('Should not accept more chunks than expected with an invalid content length', async function () {
      const uploadId = await prepareUpload({ size: 500 })

      const size = 1000

      // Content length check seems to have changed in v16
      const expectedStatus = process.version.startsWith('v16')
        ? HttpStatusCode.CONFLICT_409
        : HttpStatusCode.BAD_REQUEST_400

      const contentRangeBuilder = (start: number) => `bytes ${start}-${start + size - 1}/${size}`
      await sendChunks({ pathUploadId: uploadId, expectedStatus, contentRangeBuilder, contentLength: size })
      await checkFileSize(uploadId, 0)
    })

    it('Should be able to accept 2 PUT requests', async function () {
      const uploadId = await prepareUpload()

      const result1 = await sendChunks({ pathUploadId: uploadId })
      const result2 = await sendChunks({ pathUploadId: uploadId })

      expect(result1.body.video.uuid).to.exist
      expect(result1.body.video.uuid).to.equal(result2.body.video.uuid)

      expect(result1.headers['x-resumable-upload-cached']).to.not.exist
      expect(result2.headers['x-resumable-upload-cached']).to.equal('true')

      await checkFileSize(uploadId, null)
    })

    it('Should not have the same upload id with 2 different users', async function () {
      const originalName = 'toto.mp4'
      const lastModified = new Date().getTime()

      const uploadId1 = await prepareUpload({ originalName, lastModified, token: server.accessToken })
      const uploadId2 = await prepareUpload({ originalName, lastModified, channelId: userChannelId, token: userAccessToken })

      expect(uploadId1).to.not.equal(uploadId2)
    })

    it('Should have the same upload id with the same user', async function () {
      const originalName = 'toto.mp4'
      const lastModified = new Date().getTime()

      const uploadId1 = await prepareUpload({ originalName, lastModified })
      const uploadId2 = await prepareUpload({ originalName, lastModified })

      expect(uploadId1).to.equal(uploadId2)
    })

    it('Should not cache a request with 2 different users', async function () {
      const originalName = 'toto.mp4'
      const lastModified = new Date().getTime()

      const uploadId = await prepareUpload({ originalName, lastModified, token: server.accessToken })

      await sendChunks({ pathUploadId: uploadId, token: server.accessToken })
      await sendChunks({ pathUploadId: uploadId, token: userAccessToken, expectedStatus: HttpStatusCode.FORBIDDEN_403 })
    })

    it('Should not cache a request after a delete', async function () {
      const originalName = 'toto.mp4'
      const lastModified = new Date().getTime()
      const uploadId1 = await prepareUpload({ originalName, lastModified, token: server.accessToken })

      await sendChunks({ pathUploadId: uploadId1 })
      await server.videos.endResumableUpload({ pathUploadId: uploadId1 })

      const uploadId2 = await prepareUpload({ originalName, lastModified, token: server.accessToken })
      expect(uploadId1).to.equal(uploadId2)

      const result2 = await sendChunks({ pathUploadId: uploadId1 })
      expect(result2.headers['x-resumable-upload-cached']).to.not.exist
    })

    it('Should not cache after video deletion', async function () {
      const originalName = 'toto.mp4'
      const lastModified = new Date().getTime()

      const uploadId1 = await prepareUpload({ originalName, lastModified })
      const result1 = await sendChunks({ pathUploadId: uploadId1 })
      await server.videos.remove({ id: result1.body.video.uuid })

      const uploadId2 = await prepareUpload({ originalName, lastModified })
      const result2 = await sendChunks({ pathUploadId: uploadId2 })
      expect(result1.body.video.uuid).to.not.equal(result2.body.video.uuid)

      expect(result2.headers['x-resumable-upload-cached']).to.not.exist

      await checkFileSize(uploadId1, null)
      await checkFileSize(uploadId2, null)
    })

    it('Should refuse an invalid digest', async function () {
      const uploadId = await prepareUpload({ token: server.accessToken })

      await sendChunks({
        pathUploadId: uploadId,
        token: server.accessToken,
        digestBuilder: () => 'sha=' + 'a'.repeat(40),
        expectedStatus: 460 as any
      })
    })

    it('Should accept an appropriate digest', async function () {
      const uploadId = await prepareUpload({ token: server.accessToken })

      await sendChunks({
        pathUploadId: uploadId,
        token: server.accessToken,
        digestBuilder: (chunk: Buffer) => {
          return 'sha1=' + sha1(chunk, 'base64')
        }
      })
    })
  })

  after(async function () {
    await cleanupTests([ server ])
  })
})