Sanitized Cloudflare Worker Tweet Through API Example (handler.ts)

handler.ts

function getRandomString(length) {
    const randomChars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
    let result = '';
    for ( let i = 0; i < length; i++ ) {
        result += randomChars.charAt(Math.floor(Math.random() * randomChars.length));
    }
    return result;
}
function hexToBase64(str) {
  const stringChange = str.toString()
  return btoa(String.fromCharCode.apply(null, stringChange.replace(/\r|\n/g, "").replace(/([\da-fA-F]{2}) ?/g, "0x$1 ").replace(/ +$/, "").split(" ")));
}
async function postTweet() {

  const oauth_consumer_key = '<OAUTH CONUMER KEY>'
  const oauth_consumer_secret = '<OAUTH CONSUMER SECRET>'
  const oauth_token = '<OAUTH TOKEN>'
  const oauth_token_secret = 'OAUTH TOKEN SECRET'
  const oauth_signature_method = 'HMAC-SHA1'
  const oauth_version = '1.0'
  const oauth_nonce = getRandomString(42)
  const oauth_timestamp = Math.round(Date.now() / 1000)

  const endpointURL = 'https://api.twitter.com/1.1/statuses/update.json?status';
  
  const tweetData = {
    status: 'The new NFT asset was uploaded to the blockchain'
  }
  
  const encodedTweet = encodeURIComponent(tweetData.status).replace(/!/g, '%21')

  const params = 'POST&' + encodeURIComponent('https://api.twitter.com/1.1/statuses/update.json') + '&include_entities' + encodeURIComponent('=true&') + 'oauth_consumer_key' + encodeURIComponent('='+oauth_consumer_key+'&') + 'oauth_nonce' + encodeURIComponent('='+oauth_nonce+'&') + 'oauth_signature_method' + encodeURIComponent('='+oauth_signature_method+'&') + 'oauth_timestamp' + encodeURIComponent('='+oauth_timestamp+'&') + 'oauth_token' + encodeURIComponent('='+oauth_token+'&') + 'oauth_version' + encodeURIComponent('='+oauth_version+'&') + 'status' + encodeURIComponent('='+encodedTweet)
  console.log(params)
  console.log('')
  console.log('')
  const signingKey = encodeURIComponent(oauth_consumer_secret) + '&' + encodeURIComponent(oauth_token_secret)
  console.log(signingKey)
  //////HMAC-SHA1 Functionality//////
  const keyReady = await crypto.subtle.importKey(
    'raw',
    new TextEncoder().encode(signingKey),
    { name: 'HMAC', hash: 'SHA-1' },
    false,
    ['sign', 'verify'],
  )
  const hexStr = await crypto.subtle.sign('HMAC', keyReady, new TextEncoder().encode(params));
  //const hexStr = CryptoJS.HmacSHA1(params, signingKey)
  console.log(hexStr)
  const signature = hexToBase64(hexStr)
  const oauth_signature = encodeURIComponent(signature)
  fetch('https://api.twitter.com/1.1/statuses/update.json', {
    method: 'post',
    headers: {
      'Authorization': 'OAuth oauth_consumer_key="'+oauth_consumer_key+'",oauth_token="'+oauth_token+'",oauth_signature_method="HMAC-SHA1",oauth_timestamp="'+oauth_timestamp+'",oauth_nonce="'+oauth_nonce+'",oauth_version="1.0",oauth_signature="'+oauth_signature+'"',
      'Content-Type': 'application/x-www-form-urlencoded' // 'application/json'
    },
    body: JSON.stringify(tweetData)
  }).then(function(response) {
    return response.json();
  }).then(function(data) {
    console.log(data);
  });
  console.log('postTweet ran')
}

export async function handleRequest(request: Request): Promise<Response> {
  await postTweet()
  return new Response(`Hello worker! this is a ${request.method} request`, {
    headers: { 'content-type': 'text/plain' },
  });
}