class MyCrashTestApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: const Text('APM Exception Capture Test')),
        body: Center(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: [
              // 1. Synchronous exception test
              ElevatedButton(
                child: const Text('Trigger Synchronous Exception'),
                onPressed: () => _throwSyncException(),
              ),
              
              const SizedBox(height: 20),
              
              // 2. Asynchronous exception test
              ElevatedButton(
                child: const Text('Trigger Asynchronous Exception'),
                onPressed: () => _throwAsyncException(),
              ),
              
              const SizedBox(height: 20),
              
              // 3. Widget build exception
              ElevatedButton(
                child: const Text('Trigger Widget Exception'),
                onPressed: () => Navigator.push(
                  context, 
                  MaterialPageRoute(builder: (_) => FaultyWidget())
                ),
              ),
            ],
          ),
        ),
      ),
    );
  }

  // Synchronous exception example
  void _throwSyncException() {
      // Simulates a business logic error.
      final list = [];
      print(list[0]); // Out-of-bounds access
  }

  // Asynchronous exception example
  Future<void> _throwAsyncException() async {
      await Future.delayed(Duration(milliseconds: 500));
      // Simulates an asynchronous error.
      dynamic nullObject = null;
      print(nullObject.length); // NoSuchMethodError
  }
}

// Exception-throwing Widget
class FaultyWidget extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    // Intentionally throws an exception during build.
    if (DateTime.now().millisecond % 2 == 0) {
      return Container(color: Colors.blue);
    }
    throw Exception('Random exception during Widget build');
  }
}