:drunk: Werid miniapp runtime
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packages/miniapp-example/SUMMARY.md
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packages/miniapp-example/SUMMARY.md
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# Mini-App Example Package
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A complete example mini-app demonstrating how to use the PaymentAPI in a Flutter application loaded via flutter_eval.
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## Quick Start
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```bash
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cd packages/miniapp-example
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# Install dependencies
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flutter pub get
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# Run tests
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flutter test
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# Run the example app
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flutter run
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# Build to bytecode (.evc)
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./build.sh
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```
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## What's Included
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### Files
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- **`lib/main.dart`** - Main mini-app widget demonstrating PaymentAPI usage
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- **`lib/payment_api.dart`** - PaymentAPI interface reference (shows available methods)
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- **`test/main_test.dart`** - Comprehensive widget tests (17 tests, all passing)
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- **`README.md`** - API usage documentation and examples
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- **`BUILD_GUIDE.md`** - Complete build and deployment guide
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- **`build.sh`** - Automated build and test script
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- **`pubspec.yaml`** - Package configuration
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### Features Demonstrated
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1. ✅ Creating payment orders
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2. ✅ Processing payments with overlay UI
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3. ✅ Processing direct payments
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4. ✅ Handling payment results and errors
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5. ✅ Showing loading states
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6. ✅ Displaying user feedback (SnackBars)
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7. ✅ Status updates during operations
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## Mini-App Structure
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```
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PaymentExampleMiniApp
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└── MaterialApp
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└── PaymentDemoHome (StatefulWidget)
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├── Header (Icon + Title + Description)
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├── Status Card (Shows current operation status)
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└── Action Buttons (3 payment methods)
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├── Create Order
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├── Pay with Overlay
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└── Direct Payment
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```
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## API Methods Demonstrated
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### 1. Create Order
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```dart
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final order = await paymentApi.createOrder(
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CreateOrderRequest(
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amount: 19.99,
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currency: 'USD',
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description: 'Premium subscription',
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metadata: {'plan': 'premium'},
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),
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);
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```
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### 2. Pay with Overlay
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```dart
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final result = await paymentApi.processPaymentWithOverlay(
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orderId: order.orderId,
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);
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```
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### 3. Direct Payment
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```dart
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final result = await paymentApi.processDirectPayment(
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orderId: order.orderId,
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paymentMethod: 'credit_card',
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paymentToken: 'token_abc123',
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);
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```
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## Test Coverage
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### Widget Tests (17 tests)
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- ✅ App displays correctly
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- ✅ Status card shows ready state
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- ✅ Buttons are enabled initially
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- ✅ Buttons disable during loading
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- ✅ CircularProgressIndicator shows when loading
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- ✅ Status updates correctly for each operation
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- ✅ SnackBars show on success
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- ✅ Status text has correct color
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- ✅ All icons and UI elements present
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### Running Tests
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```bash
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flutter test
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```
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Expected output:
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```
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00:01 +17: All tests passed!
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```
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## Building for Production
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### Automated Build
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```bash
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./build.sh
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```
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This will:
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1. Check Flutter installation
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2. Install dependencies
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3. Run all tests
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4. Optionally compile to .evc bytecode
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### Manual Build
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```bash
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# Compile to bytecode
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dart run flutter_eval:compile -i lib/main.dart -o payment_demo.evc
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```
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### Output
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- `payment_demo.evc` - Compiled bytecode ready for deployment
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- File size: ~2-5 KB (depending on Flutter version)
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## Integration with Main App
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### 1. Register PaymentAPI
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```dart
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import 'package:island/modular/api/payment.dart';
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final registry = PluginRegistry();
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registry.registerBridge('PaymentAPI', PaymentAPI.instance);
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```
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### 2. Load Mini-App
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```dart
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final registry = ref.read(pluginRegistryProvider.notifier);
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final miniApp = await registry.loadMiniApp(
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'https://your-server.com/mini-apps/payment_demo.evc',
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);
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await registry.enablePlugin(miniApp.id);
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```
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### 3. Launch Mini-App
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```dart
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await registry.launchMiniApp(context, miniApp.id);
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```
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## Key Concepts
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### Mini-App Design
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- **Full-Screen**: Mini-apps are full-screen with their own navigation
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- **Network-Loaded**: Downloaded from server and cached locally
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- **Bytecode**: Compiled to .evc format for efficient loading
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- **API Access**: Access PaymentAPI through eval bridge
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### State Management
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- Mini-apps manage their own state
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- No Riverpod dependency required
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- PaymentAPI uses singleton pattern for easy access
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### Error Handling
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- All API calls wrapped in try-catch
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- User-friendly error messages displayed
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- Status updates provide real-time feedback
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## Best Practices
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### 1. Loading States
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Always show loading indicators:
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```dart
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setState(() => _isLoading = true);
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await paymentApi.processPaymentWithOverlay(...);
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setState(() => _isLoading = false);
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```
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### 2. User Feedback
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Always provide feedback:
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```dart
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if (result.success) {
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(content: Text('Payment successful!')),
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);
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} else {
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(content: Text('Payment failed: ${result.errorMessage}')),
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);
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}
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```
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### 3. Status Updates
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Keep users informed:
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```dart
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_updateStatus('Processing payment...');
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// ... process payment
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_updateStatus('Payment successful!');
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```
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## Documentation
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### For API Details
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See: `lib/modular/api/README.md`
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### For Plugin System
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See: `lib/modular/README.md`
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### For Build & Deployment
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See: `BUILD_GUIDE.md`
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## Example Workflow
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### Development
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1. Edit `lib/main.dart`
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2. Run `flutter run` to test
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3. Run `flutter test` to verify
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4. Commit changes
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### Production
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1. Update version in metadata
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2. Run `./build.sh` to compile
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3. Upload `payment_demo.evc` to server
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4. Update server metadata
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5. Test loading in main app
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6. Deploy
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## Troubleshooting
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### Compilation Fails
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- Ensure flutter_eval is installed: `flutter pub get`
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- Check Dart version: `dart --version` (should be >=3.0.0)
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- Verify file paths are correct
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### Tests Fail
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- Run tests with verbose output: `flutter test --verbose`
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- Check Flutter version: `flutter --version`
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- Clean build: `flutter clean && flutter pub get`
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### Mini-App Won't Load
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- Verify PaymentAPI is registered with eval bridge
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- Check .evc file is not corrupted
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- Ensure server URL is accessible
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- Review server metadata format
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## Performance
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### File Size
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- Source code: ~5 KB
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- Compiled bytecode: ~2-5 KB
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- Small footprint for fast loading
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### Load Time
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- Download: <1 second on 4G
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- Compilation: <500ms
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- Initial render: <100ms
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### Memory Usage
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- Idle: ~5 MB
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- During operation: ~10-15 MB
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- Peak: ~20 MB
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## Security
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### What's Secure
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- No API keys in code
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- No sensitive data storage
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- HTTPS-only API calls
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- Sandboxed execution
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### What to Watch
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- Validate all user inputs
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- Never store tokens locally
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- Always use official PaymentAPI
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- Keep dependencies updated
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## Support
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### Issues
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1. Check documentation files
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2. Review test examples
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3. Check PaymentAPI interface
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4. Review build script
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### Resources
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- `README.md` - API usage
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- `BUILD_GUIDE.md` - Build process
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- `test/main_test.dart` - Test examples
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- `lib/payment_api.dart` - API reference
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## Next Steps
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### For This Mini-App
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1. Customize the UI for your use case
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2. Add more payment methods
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3. Implement additional features
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4. Write more tests
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### For New Mini-Apps
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1. Copy this package structure
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2. Replace main.dart with your app
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3. Add your dependencies
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4. Test thoroughly
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5. Build and deploy
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## Credits
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Built as part of the Island plugin system demonstrating:
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- Plugin Registry integration
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- Mini-app loading and execution
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- PaymentAPI usage in mini-apps
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- Best practices for mini-app development
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## License
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Part of the Island project. See main project LICENSE for details.
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