final flasho = FlashoClient(token: 'placeholder');
 
final result = await flasho.auth.login(
  email: '[email protected]',
  password: 'your-password',
);
 
print(result.token);                   // eyJ...
print(result.user.email);              // [email protected]
print(result.merchant.sellerName);     // "My Restaurant"
print(result.merchant.billingMode);    // BillingMode.prepaid
print(result.merchant.walletBalance);  // "10.000"
 
// No setup needed — all subsequent calls use the JWT
final data = await flasho.account.bootstrap();

class LoginScreen extends StatefulWidget {
  const LoginScreen({super.key});
 
  @override
  State<LoginScreen> createState() => _LoginScreenState();
}
 
class _LoginScreenState extends State<LoginScreen> {
  final _emailController = TextEditingController();
  final _passwordController = TextEditingController();
  bool _loading = false;
  String? _error;
 
  Future<void> _login() async {
    setState(() { _loading = true; _error = null; });
 
    try {
      final flasho = context.read<FlashoClient>();
      final result = await flasho.auth.login(
        email: _emailController.text.trim(),
        password: _passwordController.text,
      );
      // Navigate to home with merchant info
      if (mounted) {
        Navigator.pushReplacementNamed(context, '/home',
          arguments: result.merchant);
      }
    } on FlashoApiException catch (e) {
      setState(() => _error = e.message);
    } on FlashoNetworkException catch (_) {
      setState(() => _error = 'Network error. Check your connection.');
    } finally {
      if (mounted) setState(() => _loading = false);
    }
  }
 
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Padding(
        padding: const EdgeInsets.all(24),
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            TextField(
              controller: _emailController,
              decoration: const InputDecoration(labelText: 'Email'),
              keyboardType: TextInputType.emailAddress,
            ),
            const SizedBox(height: 16),
            TextField(
              controller: _passwordController,
              decoration: const InputDecoration(labelText: 'Password'),
              obscureText: true,
            ),
            const SizedBox(height: 24),
            if (_error != null) ...[
              Text(_error!, style: const TextStyle(color: Colors.red)),
              const SizedBox(height: 12),
            ],
            SizedBox(
              width: double.infinity,
              child: ElevatedButton(
                onPressed: _loading ? null : _login,
                child: _loading
                    ? const SizedBox(
                        height: 20,
                        width: 20,
                        child: CircularProgressIndicator(strokeWidth: 2),
                      )
                    : const Text('Sign in'),
              ),
            ),
          ],
        ),
      ),
    );
  }
}