auth0-flutter-samples/sample/lib/example_app.dart at 46740f31266cafd06c76dde2925a770b10cd8c6e · auth0-samples/auth0-flutter-samples · GitHub

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import 'dart:io' show Platform;

import 'package:auth0_flutter/auth0_flutter.dart';
import 'package:auth0_flutter/auth0_flutter_web.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:flutter_dotenv/flutter_dotenv.dart';

import 'constants.dart';
import 'hero.dart';
import 'user.dart';

class ExampleApp extends StatefulWidget {
  final Auth0? auth0;
  const ExampleApp({this.auth0, final Key? key}) : super(key: key);

  @override
  State<ExampleApp> createState() => _ExampleAppState();
}

class _ExampleAppState extends State<ExampleApp> {
  UserProfile? _user;

  late Auth0 auth0;
  late Auth0Web auth0Web;

  @override
  void initState() {
    super.initState();
    auth0 = widget.auth0 ??
        Auth0(dotenv.env['AUTH0_DOMAIN']!, dotenv.env['AUTH0_CLIENT_ID']!);
    auth0Web =
        Auth0Web(dotenv.env['AUTH0_DOMAIN']!, dotenv.env['AUTH0_CLIENT_ID']!);

    if (kIsWeb) {
      auth0Web.onLoad().then((final credentials) => setState(() {
            _user = credentials?.user;
          }));
    }
  }

  Future<void> login() async {
    try {
      if (kIsWeb) {
        return auth0Web.loginWithRedirect(redirectUrl: 'http://localhost:3000');
      }

      Credentials credentials;
      if (Platform.isWindows) {
        credentials = await auth0
            .windowsWebAuthentication()
            .login(appCustomURL: 'auth0flutter://callback');
      } else {
        credentials = await auth0
            .webAuthentication(scheme: dotenv.env['AUTH0_CUSTOM_SCHEME'])
            // Use a Universal Link callback URL on iOS 17.4+ / macOS 14.4+
            // useHTTPS is ignored on Android
            .login(useHTTPS: true);
      }

      setState(() {
        _user = credentials.user;
      });
    } catch (e) {
      print(e);
    }
  }

  Future<void> logout() async {
    try {
      if (kIsWeb) {
        await auth0Web.logout(returnToUrl: 'http://localhost:3000');
      } else if (Platform.isWindows) {
        await auth0
            .windowsWebAuthentication()
            .logout(appCustomURL: 'auth0flutter://callback');
        setState(() {
          _user = null;
        });
      } else {
        await auth0
            .webAuthentication(scheme: dotenv.env['AUTH0_CUSTOM_SCHEME'])
            // Use a Universal Link logout URL on iOS 17.4+ / macOS 14.4+
            // useHTTPS is ignored on Android
            .logout(useHTTPS: true);
        setState(() {
          _user = null;
        });
      }
    } catch (e) {
      print(e);
    }
  }

  @override
  Widget build(final BuildContext context) {
    return MaterialApp(
      home: Scaffold(
          body: Padding(
        padding: const EdgeInsets.only(
          top: padding,
          bottom: padding,
          left: padding / 2,
          right: padding / 2,
        ),
        child: Column(crossAxisAlignment: CrossAxisAlignment.center, children: [
          Expanded(
              child: Row(children: [
            _user != null
                ? Expanded(child: UserWidget(user: _user))
                : const Expanded(child: HeroWidget())
          ])),
          _user != null
              ? ElevatedButton(
                  onPressed: logout,
                  style: ButtonStyle(
                    backgroundColor:
                        MaterialStateProperty.all<Color>(Colors.black),
                  ),
                  child: const Text('Logout'),
                )
              : ElevatedButton(
                  onPressed: login,
                  style: ButtonStyle(
                    backgroundColor:
                        MaterialStateProperty.all<Color>(Colors.black),
                  ),
                  child: const Text('Login'),
                )
        ]),
      )),
    );
  }
}