server2.dart

import 'dart:async';
import 'dart:convert';
import 'dart:io';

import 'package:alfred/alfred.dart';

void main() async {
  var app = Alfred();

  app.get('*', (req, res) => Directory('public'));

  await app.listen(8080);

  registerUpdater(onExit: () => app.close());
}

void registerUpdater({required void Function() onExit}) {
  Timer.periodic(Duration(seconds: 60), (timer) async {
    var process = await Process.start('git', ['pull']);
    var hasUpdated = false;
    await process.stdout.transform(utf8.decoder).forEach((line) {
      hasUpdated = line.startsWith('Updating') || hasUpdated;
    });
    await process.exitCode;

    if (hasUpdated) {
      print('Close app for update');
      onExit();
      timer.cancel();
    }
  });
}