webhook.js

import ngrok from '@ngrok/ngrok';
import { Bkper } from 'bkper-js';
import { getOAuthToken } from 'bkper'
import { App } from 'bkper-js';
import dotenv from 'dotenv';
import { fileURLToPath } from 'url';
import path from 'path';

const __filename = fileURLToPath(import.meta.url); // get the resolved path to the file
const __dirname = path.dirname(__filename); // get the name of the directory

dotenv.config({ path: `${__dirname}/.env` });

process.env.NODE_ENV = 'development';

const apiKey = process.env.BKPER_API_KEY;
Bkper.setConfig({
  oauthTokenProvider: () => getOAuthToken()
})

const app = new App();
let webhookListener;

(async function () {
  try {
    console.log("Starting ngrok...");
    webhookListener = await ngrok.forward({ port: 3004, authtoken_from_env: true });
    const webhookUrl = webhookListener.url();
    console.log(`Started webhook at ${webhookUrl}`);
    await app.setWebhookUrlDev(webhookUrl).patch();
  } catch (err) {
    console.log(err);
    throw err;
  }
})();

async function exit() {
  try {
    await app.setWebhookUrlDev(null).patch();
    console.log(' \nRemoved webhook.');
    if (webhookListener) {
      webhookListener.close();
    }
  } catch (err) {
    console.log(err);
  }
  process.exit();
}

process.on('exit', exit);
process.on('SIGINT', exit);
process.on('SIGUSR1', exit);
process.on('SIGUSR2', exit);
process.on('uncaughtException', exit);
process.stdin.resume();