Twilio Notify

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// Description
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// Twilio Notify API to send bulk SMS with the same message (body) as one API request
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// Upload notifyList.txt as a private Twilio asset
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// notifyList.txt format (comma separated numbers w/wo spaces): +15105550100, +15105550101, +15105550102, +15105550103
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// Execute Syntax: https://x.x.x.x/<path>?queryParamPasscode=8675309
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// (change passcode below, replace this method with a secure auth method in production)
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// Make sure under Functions Global Config tab:
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// "Add my Twilio Credentials (ACCOUNT_SID) and (AUTH_TOKEN) to ENV" is CHECKED
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const fs = require('fs');
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// Add node-fetch 2.6.0 as a dependency under Settings, Dependencies
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const fetch = require('node-fetch');
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//** START NECESSARY CONFIGURATION** 
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// You must define your unique Twilio Notify SID - https://www.twilio.com/console/notify/services below
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// Notify will make use of a Twilio Messaging Service which you also need to define with a Twilio number(s)
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// https://www.twilio.com/console/sms/services
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const notifySid = 'IS076575.....';
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const passCode = '8675309'; // CHANGE THIS
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// Notify Bulk Message Body to Send
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const bulkMsgBody = '😸 Hello from Winston 😸';
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//** END NECESSARY CONFIGURATION** 
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exports.handler = function (context, event, callback) {
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  const params = new URLSearchParams();
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  const queryParamPasscode = event.queryParamPasscode;
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  const fileName = '/notifyList.txt';
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  const file = Runtime.getAssets()[fileName].path;
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  const numbers = fs.readFileSync(file, 'utf8').trim();
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  // Must pass a URL query parameter of queryParamPasscode with the value of passCode to execute
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  if (queryParamPasscode != passCode) return callback('invalid operation'); // You can change the error message
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  params.append('Body', bulkMsgBody);
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  numbers.split(',').forEach((number) => {
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    number.trim();
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    params.append(
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      `ToBinding`,
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      `{ "binding_type": "sms", "address": "${number}" }`
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    );
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  });
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  const headers = {
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    Authorization:
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      'Basic ' +
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      new Buffer.from(`${context.ACCOUNT_SID}:${context.AUTH_TOKEN}`).toString(
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        'base64'
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      ),
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  };
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  fetch(`https://notify.twilio.com/v1/Services/${notifySid}/Notifications`, {
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    method: 'POST',
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    headers,
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    body: params,
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  })
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    .then((res) => res.json())
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    .then((json) => {
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      console.log(json);
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      return callback(null, { result: 'success' });
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    })
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    .catch((error) => {
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      console.error(error);
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      return callback({ result: 'error' });
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    });
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};
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