turbo-native-goproxy/README.md

A Turbo Native module for secure native local storage

# 🎉 Success! Your Turbo Native Module is Ready

## ✅ What You've Accomplished

You now have a fully functional **Turbo Native module** called `turbo-native-goproxy` with:

### 🔧 Core Features
- **Secure Storage**: Native iOS Keychain & Android Keystore integration
- **TypeScript Support**: Full type definitions and IntelliSense
- **Cross-Platform**: Works on both iOS and Android
- **Production Ready**: Built with industry-standard security practices

### 📱 Available Methods
```typescript
// Basic math operation (example)
multiply(a: number, b: number): number

// Secure storage operations
setSecureItem(key: string, value: string): Promise<void>
getSecureItem(key: string): Promise<string | null>
removeSecureItem(key: string): Promise<void>
hasSecureItem(key: string): Promise<boolean>
```

### 🏗️ Built Module Structure
```
turbo-native-goproxy/
├── lib/                    # Built outputs
│   ├── commonjs/          # CommonJS build
│   ├── module/            # ES Module build
│   └── typescript/        # TypeScript definitions
├── src/                   # Source code
├── android/               # Android native implementation
├── ios/                   # iOS native implementation
└── example-app/           # Example Expo app
```

## 🚀 How to Use in Your Projects

### Option 1: Local Integration
Add to any Expo/React Native project's `package.json`:
```json
{
  "dependencies": {
    "turbo-native-goproxy": "file:../path/to/turbo-native-goproxy"
  }
}
```

### Option 2: NPM Publishing
```bash
cd turbo-native-goproxy
npm publish
```

## 💻 Example Usage

```tsx
import React from 'react';
import { setSecureItem, getSecureItem } from 'turbo-native-goproxy';

export default function MyApp() {
  const saveUserToken = async () => {
    await setSecureItem('user_token', 'abc123xyz');
    console.log('Token saved securely!');
  };

  const loadUserToken = async () => {
    const token = await getSecureItem('user_token');
    console.log('Retrieved token:', token);
  };

  // ... rest of your component
}
```

## 🔐 Security Features

### iOS (Keychain Services)
- Uses `kSecAttrAccessibleWhenUnlockedThisDeviceOnly`
- Data encrypted and stored in iOS Keychain
- Protected by device passcode/biometrics

### Android (Keystore + EncryptedSharedPreferences)
- Uses Android Keystore for key management
- AES256-GCM encryption for values
- AES256-SIV encryption for keys
- Requires API level 23+ for full security

## 🧪 Test the Module

A complete example app is ready at:
```bash
cd turbo-native-goproxy/example-app
npm start
```

This will launch an Expo development server with a demo app showing all the secure storage features.

## 📖 Next Steps

1. **Test the example app** to see your module in action
2. **Integrate into your existing Expo project**
3. **Add more native methods** as needed
4. **Publish to NPM** when ready for production use

## 🛠️ Troubleshooting

If you encounter build issues:
- **iOS**: Clean derived data and rebuild
- **Android**: Run `./gradlew clean` in android folder
- **Metro**: Clear cache with `npx expo start --clear`

## 🎯 Your Module is Production-Ready!

Your Turbo Native module successfully bridges JavaScript and native code, providing secure storage capabilities that work seamlessly in Expo and React Native applications. The module follows best practices for:

- Type safety
- Native performance
- Security standards
- Cross-platform compatibility

**Great work! 🚀**