flutter_deep_link_guard 1.0.0

Declarative route middleware and deep link security guard wrapper for GoRouter in Flutter.

example/lib/main.dart

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

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

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'flutter_deep_link_guard Demo',
      theme: ThemeData.dark(useMaterial3: true),
      home: const GuardHomeScreen(),
    );
  }
}

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

  @override
  State<GuardHomeScreen> createState() => _GuardHomeScreenState();
}

class _GuardHomeScreenState extends State<GuardHomeScreen> {
  bool _isUserLoggedIn = false;
  late final GuardPipeline _pipeline;

  @override
  void initState() {
    super.initState();
    _pipeline = GuardPipeline([
      AuthGuard(
        isAuthenticated: () => _isUserLoggedIn,
        fallbackRedirectPath: '/login',
      ),
    ]);
  }

  Future<void> _attemptNavigate(String path) async {
    final redirect = await _pipeline.evaluate(GuardContext(location: path));
    if (redirect != null) {
      if (mounted) {
        ScaffoldMessenger.of(context).showSnackBar(
          SnackBar(
            content: Text('🛑 Access Denied to $path. Redirecting to $redirect'),
            backgroundColor: Colors.redAccent,
          ),
        );
      }
    } else {
      if (mounted) {
        ScaffoldMessenger.of(context).showSnackBar(
          SnackBar(
            content: Text('✅ Access Granted to $path!'),
            backgroundColor: Colors.green,
          ),
        );
      }
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text('flutter_deep_link_guard Demo')),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            SwitchListTile(
              title: const Text('Simulate User Logged In'),
              value: _isUserLoggedIn,
              onChanged: (val) => setState(() => _isUserLoggedIn = val),
            ),
            const SizedBox(height: 24),
            ElevatedButton(
              onPressed: () => _attemptNavigate('/dashboard'),
              child: const Text('Try Navigating to Protected /dashboard'),
            ),
          ],
        ),
      ),
    );
  }
}