add firebase cli

lib/firebase_options.dart

@@ -0,0 +1,72 @@
+// File generated by FlutterFire CLI.
+// ignore_for_file: type=lint
+import 'package:firebase_core/firebase_core.dart' show FirebaseOptions;
+import 'package:flutter/foundation.dart'
+    show defaultTargetPlatform, kIsWeb, TargetPlatform;
+
+/// Default [FirebaseOptions] for use with your Firebase apps.
+///
+/// Example:
+/// ```dart
+/// import 'firebase_options.dart';
+/// // ...
+/// await Firebase.initializeApp(
+///   options: DefaultFirebaseOptions.currentPlatform,
+/// );
+/// ```
+class DefaultFirebaseOptions {
+  static FirebaseOptions get currentPlatform {
+    if (kIsWeb) {
+      throw UnsupportedError(
+        'DefaultFirebaseOptions have not been configured for web - '
+        'you can reconfigure this by running the FlutterFire CLI again.',
+      );
+    }
+    switch (defaultTargetPlatform) {
+      case TargetPlatform.android:
+        return android;
+      case TargetPlatform.iOS:
+        return ios;
+      case TargetPlatform.macOS:
+        throw UnsupportedError(
+          'DefaultFirebaseOptions have not been configured for macos - '
+          'you can reconfigure this by running the FlutterFire CLI again.',
+        );
+      case TargetPlatform.windows:
+        throw UnsupportedError(
+          'DefaultFirebaseOptions have not been configured for windows - '
+          'you can reconfigure this by running the FlutterFire CLI again.',
+        );
+      case TargetPlatform.linux:
+        throw UnsupportedError(
+          'DefaultFirebaseOptions have not been configured for linux - '
+          'you can reconfigure this by running the FlutterFire CLI again.',
+        );
+      default:
+        throw UnsupportedError(
+          'DefaultFirebaseOptions are not supported for this platform.',
+        );
+    }
+  }
+
+  static const FirebaseOptions android = FirebaseOptions(
+    apiKey: 'AIzaSyA3v2o4UqvL61fw8sVHer6pYU9tGiBagu8',
+    appId: '1:944560757353:android:d21ae04e44e82f10fa60f8',
+    messagingSenderId: '944560757353',
+    projectId: 'fcs-dev1',
+    databaseURL: 'https://fcs-dev1.firebaseio.com',
+    storageBucket: 'fcs-dev1.appspot.com',
+  );
+
+  static const FirebaseOptions ios = FirebaseOptions(
+    apiKey: 'AIzaSyBZICfIDWbWqjxHwY_jFnWv34EtCpiiE78',
+    appId: '1:944560757353:ios:de037244faea4173fa60f8',
+    messagingSenderId: '944560757353',
+    projectId: 'fcs-dev1',
+    databaseURL: 'https://fcs-dev1.firebaseio.com',
+    storageBucket: 'fcs-dev1.appspot.com',
+    androidClientId: '944560757353-1e5a1qdip1hu3p6531hvf89uf4up5ohk.apps.googleusercontent.com',
+    iosClientId: '944560757353-o6emrja7ad8g8ulbcvvpah9a1tul3s21.apps.googleusercontent.com',
+    iosBundleId: 'com.mokkon.fcs.dev',
+  );
+}

lib/main-dev.dart

@@ -1,3 +1,4 @@
+import 'package:fcs/firebase_options.dart';
 import 'package:firebase_core/firebase_core.dart';
 import 'package:firebase_messaging/firebase_messaging.dart';
 import 'package:flutter/material.dart';
@@ -9,7 +10,10 @@ import 'data/provider/messaging_fcm.dart';
 
 Future<void> main() async {
   WidgetsFlutterBinding.ensureInitialized();
-  await Firebase.initializeApp();
+  await Firebase.initializeApp(
+  options: DefaultFirebaseOptions.currentPlatform,
+);
+
   FirebaseMessaging.onBackgroundMessage(backgroundMessageHandler);
 
   Config(

lib/main-prod.dart

@@ -1,11 +1,17 @@
+import 'package:fcs/data/provider/messaging_fcm.dart';
+import 'package:firebase_core/firebase_core.dart';
+import 'package:firebase_messaging/firebase_messaging.dart';
 import 'package:flutter/material.dart';
 import 'package:logging/logging.dart';
 
 import 'app.dart';
 import 'config.dart';
 
-void main() {
+Future<void> main() async {
   WidgetsFlutterBinding.ensureInitialized();
+  await Firebase.initializeApp();
+  FirebaseMessaging.onBackgroundMessage(backgroundMessageHandler);
+
   Config(
       flavor: Flavor.PRODUCTION,
       color: Colors.blue,