Mailspring/internal_packages/verify-install-location/lib/main.es6

import {Actions} from 'nylas-exports'
import {ipcRenderer} from 'electron'

/**
 * We want to make sure that people have installed the app in a
 * reasonable location.
 *
 * On the Mac, you can accidentally run the app from the DMG. If you do
 * this, it will no longer auto-update. It's also common for Mac users to
 * leave their app in the /Downloads folder (which frequently gets
 * erased!).
 */
module.exports = {
  activate() {
    this._unlisten = Actions.notificationActionTaken.listen(this._onNotificationActionTaken, this)

    if (NylasEnv.inDevMode() || NylasEnv.inSpecMode()) return;
    if (process.platform === "darwin") {
      const appRe = /Applications/gi;
      if (appRe.test(process.argv[0])) return;

      // If we're in Volumes, that means we've launched from the DMG. This
      // is unsupported. We should optimistically move.
      const volTest = /Volumes/gi;
      if (volTest.test(process.argv[0])) {
        ipcRenderer.send("move-to-applications");
        return;
      }

      const numAsks = NylasEnv.config.get("asksAboutAppMove")
      if (numAsks >= 5) return;

      const actions = []
      if (numAsks >= 1) {
        actions.push({
          label: "Don't ask again",
          dismisses: true,
          id: 'verify-install:dont-ask-again',
        })
      }

      const re = /(^.*?\.app)/i;
      let enclosingFolder = (re.exec(process.argv[0]) || [])[0].split("/");
      enclosingFolder = enclosingFolder[enclosingFolder.length - 2]

      let msg = `I can move myself to your Applications folder if you'd like.`
      if (enclosingFolder) {
        msg += ` This will keep your ${enclosingFolder} folder uncluttered.`
      }

      Actions.postNotification({
        type: 'info',
        tag: 'app-update',
        sticky: true,
        message: msg,
        icon: 'fa-flag',
        actions: actions.concat([
          {
            label: "Do Not Move",
            dismisses: true,
            id: 'verify-install:do-not-move',
          },
          {
            "label": "Move to Applications Folder",
            "dismisses": true,
            "default": true,
            "id": 'verify-install:move-to-applications',
          },
        ]),
      });
    }
  },

  _onNotificationActionTaken({action}) {
    if (action.id === "verify-install:dont-ask-again") {
      NylasEnv.config.set("asksAboutAppMove", 5)
    } else if (action.id === "verify-install:do-not-move") {
      const numAsks = NylasEnv.config.get("asksAboutAppMove") || 0
      NylasEnv.config.set("asksAboutAppMove", numAsks + 1)
    } else if (action.id === "verify-install:move-to-applications") {
      ipcRenderer.send("move-to-applications")
    }
  },

  deactivate() {
    this._unlisten()
  },
}