import 'dart:async';
import 'dart:developer';

import 'package:bloc/bloc.dart';
import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:firebase_auth/firebase_auth.dart';
import 'package:flutter/widgets.dart';

class AppBlocObserver extends BlocObserver {
  @override
  void onChange(BlocBase bloc, Change change) {
    super.onChange(bloc, change);
    log('onChange(${bloc.runtimeType}, $change)');
  }

  @override
  void onError(BlocBase bloc, Object error, StackTrace stackTrace) {
    log('onError(${bloc.runtimeType}, $error, $stackTrace)');
    super.onError(bloc, error, stackTrace);
  }
}

typedef BootstrapBuilder = Future<Widget> Function(
  FirebaseFirestore firestore,
  FirebaseAuth firebaseAuth,
);

Future<void> bootstrap(BootstrapBuilder builder) async {
  WidgetsFlutterBinding.ensureInitialized();
  FlutterError.onError = (details) {
    log(details.exceptionAsString(), stackTrace: details.stack);
  };

  await runZonedGuarded(
    () async {
      await BlocOverrides.runZoned(
        () async => runApp(
          await builder(
            FirebaseFirestore.instance,
            FirebaseAuth.instance,
          ),
        ),
        blocObserver: AppBlocObserver(),
      );
    },
    (error, stackTrace) => log(error.toString(), stackTrace: stackTrace),
  );
}