signly_google 0.1.0

Flutter plugin-style package that performs one-shot Google Sign-In for Android and iOS and returns only the requested token.

example/lib/main.dart

import 'package:flutter/material.dart';
import 'package:signly_google/signly_google.dart';

void main() {
  runApp(const ExampleApp());
}

class ExampleApp extends StatelessWidget {
  const ExampleApp({super.key});

  @override
  Widget build(BuildContext context) {
    return const MaterialApp(home: GoogleSignInExamplePage());
  }
}

class GoogleSignInExamplePage extends StatefulWidget {
  const GoogleSignInExamplePage({super.key});

  @override
  State<GoogleSignInExamplePage> createState() => _GoogleSignInExamplePageState();
}

class _GoogleSignInExamplePageState extends State<GoogleSignInExamplePage> {
  final _client = SignlyGoogleClient();

  final _clientIdController = TextEditingController();
  final _serverClientIdController = TextEditingController();
  final _scopesController = TextEditingController(text: 'openid,email,profile');

  GoogleRequestedTokenType _requestedTokenType = GoogleRequestedTokenType.idToken;
  String _result = 'No request yet.';

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text('Google Sign-In Plugin Example')),
      body: Padding(
        padding: const EdgeInsets.all(16),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.stretch,
          children: [
            TextField(
              controller: _clientIdController,
              decoration: const InputDecoration(labelText: 'clientId (optional)'),
            ),
            TextField(
              controller: _serverClientIdController,
              decoration: const InputDecoration(labelText: 'serverClientId (optional)'),
            ),
            TextField(
              controller: _scopesController,
              decoration: const InputDecoration(
                labelText: 'Scopes (comma-separated)',
              ),
            ),
            const SizedBox(height: 12),
            DropdownButton<GoogleRequestedTokenType>(
              value: _requestedTokenType,
              isExpanded: true,
              items: GoogleRequestedTokenType.values
                  .map(
                    (value) => DropdownMenuItem(
                      value: value,
                      child: Text(value.name),
                    ),
                  )
                  .toList(),
              onChanged: (value) {
                if (value == null) {
                  return;
                }
                setState(() => _requestedTokenType = value);
              },
            ),
            const SizedBox(height: 16),
            ElevatedButton(
              onPressed: _runSignIn,
              child: const Text('Request token and user data'),
            ),
            const SizedBox(height: 16),
            Expanded(
              child: SingleChildScrollView(
                child: Text(_result),
              ),
            ),
          ],
        ),
      ),
    );
  }

  Future<void> _runSignIn() async {
    final scopes = _scopesController.text
        .split(',')
        .map((scope) => scope.trim())
        .where((scope) => scope.isNotEmpty)
        .toList();

    try {
      final response = await _client.signIn(
        GoogleSignInRequest(
          clientId: _clientIdController.text.trim().isEmpty
              ? null
              : _clientIdController.text.trim(),
          serverClientId: _serverClientIdController.text.trim().isEmpty
              ? null
              : _serverClientIdController.text.trim(),
          scopes: scopes,
          requestedTokenType: _requestedTokenType,
        ),
      );

      setState(() {
        _result = '''
userId: ${response.userId}
requestedTokenType: ${response.requestedTokenType.name}
requestedToken: ${response.requestedToken}
user.email: ${response.userData.email}
user.displayName: ${response.userData.displayName}
user.photoUrl: ${response.userData.photoUrl}
''';
      });
    } catch (error) {
      setState(() {
        _result = 'Error: $error';
      });
    }
  }

  @override
  void dispose() {
    _clientIdController.dispose();
    _serverClientIdController.dispose();
    _scopesController.dispose();
    super.dispose();
  }
}