updater.js

import { app } from 'electron'
import { autoUpdater } from 'electron-updater'
import log from 'electron-log'
import axios from 'axios'
import semverGT from 'semver/functions/gt'

const quitAndInstall = () => {
  autoUpdater.quitAndInstall()
}

const downloadUpdate = e => {
  autoUpdater.downloadUpdate(e.cancellationToken)
}

const checkForPrivateUpdates = async e => {
  const response = await axios.get(`http://example.com/api/release`, {
    params: {
      platform: process.platform,
      currentVersion: app.getVersion(),
      nextVersion: e.updateInfo.version,
    },
  })

  if (response.data.canUpdate) {
    downloadUpdate(e)
    return e
  }

  return { isUpdateAvailable: false }
}

const checkForUpdates = async () => {
  const result = await autoUpdater.checkForUpdates()

  const isUpdateAvailable = semverGT(result.updateInfo.version, app.getVersion())
  
  if (!isUpdateAvailable) {
    return result
  }

  const data = await checkForPrivateUpdates(result)
  return data
}

const startCheckUpdates = () => {
  if (process.env.NODE_ENV === 'production') {
    checkForUpdates()
    setInterval(() => {
      checkForUpdates()
    }, 1000 * 30 * 60) // every 30 min
  }
}

const setup = () => {
  autoUpdater.autoDownload = false
  autoUpdater.logger = log

  setTimeout(() => {
    startCheckUpdates()
  }, 1000 * 30)
}

export { quitAndInstall, checkForUpdates, setup }