gistfile1.txt

import 'package:firebase_messaging/firebase_messaging.dart';
import 'package:flutter/material.dart';
import 'package:myapp/database/database.dart';
import 'package:myapp/screens/home.dart';
import 'package:myapp/screens/list_words.dart';
import 'package:myapp/services/locator.dart';
import 'package:myapp/screens/settings.dart';
import 'package:myapp/database/models.dart';

void main() {
  setupLocator();
  runApp(MyApp());
} 

final FirebaseMessaging _firebaseMessaging = FirebaseMessaging();
final WordDatabase db = WordDatabase();

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  void firebaseCloudMessagingListeners() {
    _firebaseMessaging.getToken().then((token){
    });

    _firebaseMessaging.configure(
      onMessage: (Map<String, dynamic> message) async {
        Future<bool> didUpdate = setupAnyway(db);
        print(message.toString());
        showDialog(
          context: context,
          builder: (context) => AlertDialog(
            content: ListTile(
              title: Text(message['notification']['title']),
              subtitle: Text(message['notification']['body']),
            ),
            actions: <Widget>[
              FlatButton(
                child: Text('Ok'),
                onPressed: () => Navigator.of(context).pop(),
              ),
            ],
          ),
        );
        print(didUpdate.toString());
      },
      onResume: (Map<String, dynamic> message) async {
        Future<bool> didUpdate = setupAnyway(db);
        print(didUpdate.toString());
      },
      onLaunch: (Map<String, dynamic> message) async {
        Future<bool> didUpdate = setupAnyway(db);
        print(didUpdate.toString());
      },
    );
  }

  void subscribeWordNotifications() async {
    Preference notificationPref = await db.fetchNotificationPreference('xyztopic');
    if(notificationPref.value == 1) {
      _firebaseMessaging.subscribeToTopic("xyztopic");
    } else {
      _firebaseMessaging.unsubscribeFromTopic("xyztopic");
    }
  }

  @override
  void initState() {
    super.initState();
    _firebaseMessaging.requestNotificationPermissions();
    subscribeWordNotifications();
    firebaseCloudMessagingListeners();
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'MyApp',
      theme: ThemeData(
        primarySwatch: Colors.pink,
        primaryColor: Colors.pink,
        accentColor: Colors.pink[600],
        hintColor: Colors.pink[100],
        textTheme: TextTheme(
          display2: TextStyle(
            fontSize: 44.0, 
            fontFamily: "Roboto Slab",
            fontWeight: FontWeight.bold,
            color: Colors.white,
          ),
          subtitle: TextStyle(fontSize: 12.0, color: Colors.grey[100]),
          caption: TextStyle(fontSize: 14.0),
          body1: TextStyle(fontSize: 16.0),
        ),
      ),
      debugShowCheckedModeBanner: false,
      initialRoute: '/',
      routes: {
        '/': (context) => MyHomePage(title: 'My App'),
        '/settings': (context) => SettingsPage(),
        '/list': (context) => List(),
      },
    );
  }
}