PeterHdd

// Copyright (c) 2019, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override

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        body: Center(
            child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            Text(user!.email!),
            Text(user!.displayName!),
            CircleAvatar(
              backgroundImage: NetworkImage(user!.photoURL!),
              radius: 20,
            )

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class FirebaseService {
  final FirebaseAuth _auth = FirebaseAuth.instance;
  final GoogleSignIn _googleSignIn = GoogleSignIn();

  Future<String?> signInwithGoogle() async {
    try {
      final GoogleSignInAccount? googleSignInAccount =
          await _googleSignIn.signIn();
      final GoogleSignInAuthentication googleSignInAuthentication =
          await googleSignInAccount!.authentication;

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  void showMessage(String message) {
    showDialog(
        context: context,
        builder: (BuildContext context) {
          return AlertDialog(
            title: Text("Error"),
            content: Text(message),
            actions: [
              TextButton(
                child: Text("Ok"),

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class GoogleSignIn extends StatefulWidget {
  GoogleSignIn({Key? key}) : super(key: key);

  @override
  _GoogleSignInState createState() => _GoogleSignInState();
}

class _GoogleSignInState extends State<GoogleSignIn> {
  bool isLoading = false;

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class SignInPage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    Size size = MediaQuery.of(context).size;
    OutlineInputBorder border = OutlineInputBorder(
        borderSide: BorderSide(color: Constants.kBorderColor, width: 3.0));
    return Scaffold(
        resizeToAvoidBottomInset: false,
        backgroundColor: Constants.kPrimaryColor,
        body: Center(

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onPressed: () {
    result == null
        ? Navigator.pushNamed(
            context, Constants.signInNavigate)
        : Navigator.pushReplacementNamed(
            context, Constants.homeNavigate);
            },

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 child: Column(
              mainAxisAlignment: MainAxisAlignment.center,
              children: [
                Image.asset("assets/images/main-img.png"),
                RichText(
                    textAlign: TextAlign.center,
                    text: TextSpan(children: <TextSpan>[
                      TextSpan(
                          text: Constants.textIntro,
                          style: TextStyle(

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  static const statusBarColor = SystemUiOverlayStyle(
      statusBarColor: Constants.kPrimaryColor,
      statusBarIconBrightness: Brightness.dark);

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class WelcomePage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    Size size = MediaQuery.of(context).size;
    User? result = FirebaseAuth.instance.currentUser;
    return Scaffold(
        backgroundColor: Constants.kPrimaryColor,
        body: AnnotatedRegion<SystemUiOverlayStyle>(
          value: Constants.statusBarColor,
          child: Center(