appUpdater.ts

import { dialog } from 'electron';
import { autoUpdater } from 'electron-updater';
import isDev from 'electron-is-dev';
import log from 'electron-log'; //open ~/Library/Logs/mediref-desktop/log.log (may have to use 'open')

export function appUpdater(mainWindow: Electron.BrowserWindow) {
	function sendStatusToWindow(text: string) {
		if (mainWindow) {
			mainWindow.webContents.send('Updater', text);
		}
	}

	// Don't initiate auto-updates in development and on Linux system
	// since autoUpdater doesn't work on Linux
	if (isDev || process.platform === 'linux') {
		sendStatusToWindow('Dev or Linux environment detected. Updater function will not run');
		return;
	}

	// Log whats happening
	autoUpdater.logger = log;

	autoUpdater.on('checking-for-update', () => {
		sendStatusToWindow('Checking for update...');
	});
	autoUpdater.on('update-available', () => {
		sendStatusToWindow('Update available.');
	});
	autoUpdater.on('update-not-available', () => {
		sendStatusToWindow('Update not available.');
	});
	autoUpdater.on('error', (err: Error) => {
		log.info(err);
		sendStatusToWindow(`Error in auto-updater. ${JSON.stringify(err)}`);
	});
	autoUpdater.on('download-progress', (progressObj) => {
		let log_message = 'Download speed: ' + progressObj.bytesPerSecond;
		log_message = log_message + ' - Downloaded ' + progressObj.percent + '%';
		log_message = log_message + ' (' + progressObj.transferred + '/' + progressObj.total + ')';
		sendStatusToWindow(log_message);
	});

	// Ask the user to restart if an update is available
	autoUpdater.on('update-downloaded', async (event) => {
		const { response } = await dialog.showMessageBox({
			type: 'question',
			buttons: ['Install and Relaunch', 'Install Later'],
			defaultId: 0,
			message: `A new Mediref update ${event.version} has been downloaded`,
			detail: 'It will be installed the next time you restart the application',
		});
		if (response === 0) {
			autoUpdater.quitAndInstall();
			// setTimeout(() => {
			// 	// force app to quit. This is just a workaround, ideally autoUpdater.quitAndInstall() should relaunch the app.
			// 	app.quit();
			// }, 1000);
		}
	});
	// Init for updates
	autoUpdater.checkForUpdates();
}