budibase/packages/server/src/electron.js

const { app, BrowserWindow, shell, dialog } = require("electron")
const { join } = require("./utilities/centralPath")
const isDev = require("electron-is-dev")
const { autoUpdater } = require("electron-updater")
const unhandled = require("electron-unhandled")
const { existsSync } = require("fs-extra")
const initialiseBudibase = require("./utilities/initialiseBudibase")
const { budibaseAppsDir } = require("./utilities/budibaseDir")

const budibaseDir = budibaseAppsDir()
const envFile = join(budibaseDir, ".env")

async function startApp() {
  if (!existsSync(envFile)) {
    await initialiseBudibase({ dir: budibaseDir })
  }
  // evict environment from cache, so it reloads when next asked
  delete require.cache[require.resolve("./environment")]
  require("dotenv").config({ path: envFile })

  if (isDev) {
    unhandled({
      showDialog: true,
    })
  }

  const APP_URL = "http://localhost:4001/_builder"
  const APP_TITLE = "Budibase Builder"

  let win

  function handleRedirect(e, url) {
    e.preventDefault()
    shell.openExternal(url)
  }

  async function createWindow() {
    app.server = require("./app")
    win = new BrowserWindow({
      width: 1920,
      height: 1080,
    })
    win.setTitle(APP_TITLE)
    win.loadURL(APP_URL)
    if (isDev) {
      win.webContents.openDevTools()
    } else {
      autoUpdater.checkForUpdatesAndNotify()
    }

    // open _blank in default browser
    win.webContents.on("new-window", handleRedirect)
    win.webContents.on("will-navigate", handleRedirect)
  }

  app.whenReady().then(createWindow)

  // Quit when all windows are closed.
  app.on("window-all-closed", () => {
    // On macOS it is common for applications and their menu bar
    // to stay active until the user quits explicitly with Cmd + Q
    if (process.platform !== "darwin") app.quit()
  })

  app.on("activate", () => {
    // On macOS it's common to re-create a window in the app when the
    // dock icon is clicked and there are no other windows open.
    if (win === null) createWindow()
  })
}

autoUpdater.on("update-downloaded", (event, releaseNotes, releaseName) => {
  const dialogOpts = {
    type: "info",
    buttons: ["Restart", "Later"],
    title: "Budibase Update Available",
    message: process.platform === "win32" ? releaseNotes : releaseName,
    detail:
      "A new version of the budibase builder has been downloaded. Restart the application to apply the updates.",
  }

  dialog.showMessageBox(dialogOpts).then(returnValue => {
    if (returnValue.response === 0) autoUpdater.quitAndInstall()
  })
})

autoUpdater.on("error", message => {
  console.error("There was a problem updating the application")
  console.error(message)
})

startApp()