Douyin Videos Downloader

const getid = async (sec_user_id, max_cursor) => {
  const res = await fetch(
    'https://www.douyin.com/aweme/v1/web/aweme/post/?device_platform=webapp&aid=6383&channel=channel_pc_web&sec_user_id=' +
      sec_user_id +
      '&max_cursor=' +
      max_cursor,
    {
      headers: {
        accept: 'application/json, text/plain, */*',
        'accept-language': 'vi',
        'sec-ch-ua': '"Not?A_Brand";v="8", "Chromium";v="108", "Microsoft Edge";v="108"',
        'sec-ch-ua-mobile': '?0',
        'sec-ch-ua-platform': '"Windows"',
        'sec-fetch-dest': 'empty',
        'sec-fetch-mode': 'cors',
        'sec-fetch-site': 'same-origin',
      },
      referrer:
        'https://www.douyin.com/user/MS4wLjABAAAA5A-hCBCTdv102baOvaoZqg7nCIW_Bn_YBA0Aiz9uYPY',
      referrerPolicy: 'strict-origin-when-cross-origin',
      body: null,
      method: 'GET',
      mode: 'cors',
      credentials: 'include',
    }
  )
  try {
    res = await res.json()
  } catch (e) {
    res = await getid(sec_user_id, max_cursor)
    console.log(e)
  }
  return res
}

const download = async (url, aweme_id, desc) => {
  const file_name = aweme_id + '-' + desc + '.mp4'
  const data = await fetch(url, {
    headers: {
      accept: '*/*',
      'accept-language': 'vi,en-US;q=0.9,en;q=0.8',
      range: 'bytes=0-',
      'sec-ch-ua': '"Not?A_Brand";v="8", "Chromium";v="108", "Microsoft Edge";v="108"',
      'sec-ch-ua-mobile': '?0',
      'sec-ch-ua-platform': '"Windows"',
      'sec-fetch-dest': 'video',
      'sec-fetch-mode': 'cors',
      'sec-fetch-site': 'cross-site',
    },
    referrer: 'https://www.douyin.com/',
    referrerPolicy: 'strict-origin-when-cross-origin',
    body: null,
    method: 'GET',
    mode: 'cors',
    credentials: 'omit',
  })
  data = await data.blob()
  const a = document.createElement('a')
  a.href = window.URL.createObjectURL(data)
  a.download = file_name
  a.click()
}

const waitforme = (millisec) => {
  return new Promise((resolve) => {
    setTimeout(() => {
      resolve('')
    }, millisec)
  })
}

const run = async () => {
  const result = []
  const hasMore = 1
  const sec_user_id = location.pathname.replace('/user/', '')
  const max_cursor = 0
  const download_from = prompt('Enter id video(Enter 0 if want to download all video):', '')
  if (download_from == null || download_from == '') {
    alert('Please, Enter id of video!')
    return
  }
  while (hasMore == 1) {
    const moredata = await getid(sec_user_id, max_cursor)
    hasMore = moredata['has_more']
    max_cursor = moredata['max_cursor']
    for (const i in moredata['aweme_list']) {
      if (moredata['aweme_list'][i]['aweme_id'] == download_from) {
        hasMore = 0
        break
      }
      if (moredata['aweme_list'][i]['video']['play_addr']['url_list'][0].startsWith('https'))
        result.push([
          moredata['aweme_list'][i]['video']['play_addr']['url_list'][0],
          moredata['aweme_list'][i]['aweme_id'],
          moredata['aweme_list'][i]['desc'],
        ])
      else
        result.push([
          moredata['aweme_list'][i]['video']['play_addr']['url_list'][0].replace('http', 'https'),
          moredata['aweme_list'][i]['aweme_id'],
          moredata['aweme_list'][i]['desc'],
        ])
      console.clear()
      console.log('Number of videos: ' + result.length)
    }
  }
  for (const i = result.length - 1; i >= 0; i--) {
    await waitforme(1000)
    try {
      download(result[i][0], result[i][1], result[i][2])
    } catch {}
  }
}
run()