How to add license key validation and automatic updates to an Electron app (more here: https://github.com/keygen-sh/example-electron-license-activation)

main.js

// Use electron-builder's Keygen integration for automatic updates
const { autoUpdater } = require('electron-updater')
const { ipcMain } = require('electron')

// Listen for a signal from renderer to start auto-updates
ipcMain.on('license:valid', async (_event, license) => {
  // Pass in a license key to authenticate with the API
  autoUpdater.addAuthHeader(`License ${license.attributes.key}`)
  
  // Check for updates
  autoUpdater.checkForUpdatesAndNotify()
})

renderer.js

import { ipcRenderer } from 'electron'
import fetch from 'node-fetch'
 
const res = await fetch(`https://api.keygen.sh/v1/accounts/demo/licenses/${encodeURIComponent(key)}/actions/validate`, {
  method: 'POST',
  headers: {
    'content-type': 'application/vnd.api+json',
    accept: 'application/vnd.api+json',
    authorization: `License ${key}`,
  },
  body: JSON.stringify({
    meta: {
      scope: { fingerprint },
    }
  })
})
 
const { meta, data, errors } = await res.json()
if (errors) {
  const [err] = errors

  throw new Error(`${err.title}: ${err.detail}`)
}

if (meta.valid) {
  ipcRenderer.send('license:valid', data)
} else {
  ipcRenderer.send('license:invalid')
}