# SnapQRpy

**SnapQRpy** is an advanced Python library for QR-based screen sharing and remote device control with comprehensive consent management.

## Overview

SnapQRpy provides a secure, efficient, and user-friendly way to share screens and control devices remotely using QR code technology. The library supports multiple platforms including Android, iOS, Windows, macOS, and Linux.

## Key Features

- **QR Code Generation**: Create dynamic QR codes for instant device pairing
- **Screen Sharing**: Real-time screen mirroring with low latency
- **Remote Control**: Control devices with explicit user consent
- **End-to-End Encryption**: Military-grade encryption for all communications
- **Cross-Platform**: Works on Android, iOS, Windows, macOS, and Linux
- **Consent Management**: Built-in permission system for user authorization
- **WebRTC Support**: Peer-to-peer connections for optimal performance
- **Multi-Protocol**: Support for WebSocket, HTTP/2, gRPC, and more
- **Plugin System**: Extensible architecture for custom functionality
- **Rate Limiting**: Protect against abuse with configurable limits
- **Session Management**: Secure session handling with automatic timeout
- **Logging & Analytics**: Comprehensive logging and performance metrics

## Installation

### Basic Installation

```bash
pip install SnapQRpy
```

### Full Installation (All Features)

```bash
pip install SnapQRpy[full]
```

### Development Installation

```bash
pip install SnapQRpy[dev]
```

## Quick Start

### Server Side

```python
from snapqrpy import SnapQRServer

server = SnapQRServer(port=8000)
qr_code = server.generate_qr()
qr_code.show()
server.start()
```

### Client Side (Mobile/Desktop)

```python
from snapqrpy import SnapQRClient

client = SnapQRClient()
client.scan_qr()
client.request_permission()
client.start_screen_share()
```

### Command Line Interface

```bash
snapqr server --port 8000
snapqr client --scan
snapqr-gui
```

## Advanced Usage

### Custom Configuration

```python
from snapqrpy.config import Config

config = Config(
    encryption=True,
    compression=True,
    quality='high',
    frame_rate=60,
    resolution=(1920, 1080),
    consent_timeout=30,
    session_lifetime=3600
)

server = SnapQRServer(config=config)
```

### Security Features

```python
from snapqrpy.security import SecurityManager

security = SecurityManager()
security.enable_2fa()
security.set_encryption('AES-256-GCM')
security.require_pin()
```

### Event Handling

```python
from snapqrpy.events import EventManager

events = EventManager()

@events.on('connection_established')
def on_connect(session):
    print(f"New connection: {session.id}")

@events.on('permission_granted')
def on_permission(device):
    print(f"Permission granted for: {device.name}")
```

## Platform Support

### Android
- Screen capture via MediaProjection API
- Remote control via Accessibility Service
- Background service support

### iOS
- Screen recording via ReplayKit
- Remote control via system extensions
- Background mode support

### Desktop (Windows/macOS/Linux)
- Native screen capture
- Input simulation
- System tray integration

## Configuration Files

SnapQRpy supports multiple configuration formats:

- `config.yaml` - YAML configuration
- `config.json` - JSON configuration
- `config.toml` - TOML configuration
- `config.cfg` - INI-style configuration
- `.env` - Environment variables

## API Documentation

### Core Classes

- `SnapQRServer` - Server-side screen sharing
- `SnapQRClient` - Client-side connection
- `QRGenerator` - QR code creation and customization
- `StreamManager` - Video stream handling
- `SecurityManager` - Security and encryption
- `ConsentManager` - Permission handling

### Network Protocols

- WebRTC for P2P connections
- WebSocket for real-time communication
- HTTP/2 for API endpoints
- gRPC for service communication

## Security

SnapQRpy implements multiple security layers:

1. **Encryption**: AES-256-GCM, RSA-4096, ChaCha20-Poly1305
2. **Authentication**: OAuth 2.0, JWT, 2FA, Biometric
3. **Authorization**: Role-based access control (RBAC)
4. **Consent**: Explicit user permission required
5. **Rate Limiting**: DDoS protection
6. **Session Security**: Automatic timeout and invalidation

## Performance

- Low latency: < 50ms average
- High frame rate: Up to 120 FPS
- Adaptive bitrate: Automatic quality adjustment
- Hardware acceleration: GPU encoding/decoding
- Network optimization: TCP/UDP hybrid protocol

## Troubleshooting

### Connection Issues

```python
from snapqrpy.diagnostics import NetworkDiagnostics

diag = NetworkDiagnostics()
diag.test_connectivity()
diag.check_firewall()
diag.measure_latency()
```

### Permission Errors

```python
from snapqrpy.utils import PermissionChecker

checker = PermissionChecker()
checker.verify_screen_capture()
checker.verify_input_control()
checker.request_missing_permissions()
```

## Examples

See the `examples/` directory for complete usage examples:

- `basic_server.py` - Simple server setup
- `advanced_client.py` - Client with custom features
- `secure_connection.py` - Encrypted connections
- `multi_device.py` - Multiple device handling
- `plugin_example.py` - Custom plugin development

## Contributing

Contributions are welcome! Please read our contributing guidelines.

## License

MIT License - see LICENSE file for details

## Author

**MERO**  
Telegram: [@QP4RM](https://t.me/QP4RM)

## Support

For support and questions:
- Telegram: @QP4RM
- Issues: GitHub Issues

## Changelog

### Version 0.1.0 (Initial Release)
- QR code generation and scanning
- Screen sharing functionality
- Remote control capabilities
- Consent management system
- Multi-platform support
- End-to-end encryption
- WebRTC integration
- CLI and GUI interfaces
- Comprehensive documentation

---

**Note**: This library requires explicit user consent before any screen sharing or remote control operations. Always respect user privacy and comply with local laws and regulations.
