const cookies = JSON.parse(fs.readFileSync(path.join(process.cwd(), 'cookies.json'), 'utf-8'))

// Create an agent with cookies
const agent = ytdl.createAgent(cookies)

export async function POST(request) {
  const { url } = await request.json()

  // Normalize YouTube Shorts URL to standard YouTube URL
  const normalizedUrl = normalizeYouTubeUrl(url)

  if (!ytdl.validateURL(normalizedUrl)) {
    return NextResponse.json({ success: false, error: 'Invalid YouTube URL' }, { status: 400 })
  }

  try {
    // Check if video info can be fetched
    const videoInfo = await getVideoInfo(normalizedUrl)
    if (!videoInfo) {
      throw new Error('Unable to fetch video information')
    }

    const audioBuffer = await downloadAudioWithYtdl(normalizedUrl)
......

async function downloadAudioWithYtdl(url) {
  return new Promise((resolve, reject) => {
    const tempFilePath = path.join('/tmp', `${nanoid(5)}.mp3`)
    const writeStream = fs.createWriteStream(tempFilePath)

    // Add more options to ytdl
    const stream = ytdl(url, {
      filter: 'audioonly',
      agent,
      requestOptions: {
        headers: {
          'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36',
        },
      },
    })

    stream.pipe(writeStream)

    writeStream.on('finish', () => {
      fs.readFile(tempFilePath, (err, data) => {
        if (err) {
          reject(err)
        } else {
          fs.unlink(tempFilePath, (unlinkErr) => {
            if (unlinkErr) {
              console.error('Error deleting temp file:', unlinkErr)
            }
          })
          resolve(data)
        }
      })
    })

    stream.on('error', (err) => {
      reject(err)
    })
  })
}