# MQTT Bridge WIP

**Version:** 0.5.0-1
**Status:** Production Ready
**Last Updated:** 2025-12-30

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## ✅ Completed (v0.5.0)

### Backend Implementation
- ✅ **USB Detection Library** (`/usr/share/mqtt-bridge/usb-database.sh`)
  - VID:PID database with 17 known USB IoT devices
  - Support for 4 adapter types: Zigbee (6), Z-Wave (3), ModBus (4), Serial (4)
  - Functions: `detect_adapter_type()`, `find_usb_tty()`, `test_serial_port()`, `get_device_name()`

- ✅ **Enhanced RPCD Backend** (`/usr/libexec/rpcd/luci.mqtt-bridge`)
  - 7 new USB RPC methods:
    - `get_usb_devices` - List all USB devices
    - `detect_iot_adapters` - Detect Zigbee/Z-Wave/ModBus adapters
    - `get_serial_ports` - List serial ports with attributes
    - `get_adapter_info` - Get adapter details by ID
    - `test_connection` - Test serial port accessibility
    - `configure_adapter` - Create/update UCI adapter config
    - `get_adapter_status` - Real-time health monitoring

- ✅ **UCI Configuration** (`/etc/config/mqtt-bridge`)
  - Broker settings (host, port, credentials)
  - Bridge configuration (topics, retention, auto-discovery)
  - Monitor section (USB scan interval, auto-configure)
  - Adapter sections (per-device configuration with health tracking)

### Frontend Implementation
- ✅ **API Module** (`mqtt-bridge/api.js`)
  - All 7 USB RPC methods exposed
  - Promise-based API for USB detection and configuration

- ✅ **Overview View** (`overview.js`)
  - MQTT broker connection status
  - USB adapter statistics by type
  - Health status summary (online/error/missing/unknown)
  - Quick actions (scan USB, reconnect broker)

- ✅ **Adapters View** (`adapters.js`)
  - Configured adapters grid with status cards
  - Detected devices section (real-time USB scanning)
  - Import wizard (one-click import from detected to configured)
  - Adapter management (test, configure, remove)
  - Color-coded health indicators

### Theme Integration
- ✅ **SecuBox Theme System**
  - Both views use `secubox-theme/theme.js`
  - Theme.init() initialization
  - CSS variables (--sh-* prefix)
  - Dark/Light/Cyberpunk theme support
  - Responsive design

### Documentation
- ✅ **Comprehensive README.md** (679 lines)
  - Feature overview with all 17 supported devices
  - Complete API reference with examples
  - UCI configuration guide
  - Troubleshooting section
  - Integration examples (Home Assistant, Zigbee2MQTT, Node-RED)
  - Development guide

- ✅ **Updated module-status.md**
  - Added MQTT Bridge as IoT & Integration category
  - Updated totals (16 modules, 112 views, 288 RPC methods)
  - Version history and feature list

### Menu & ACL
- ✅ **Menu Configuration** (`menu.d/luci-app-mqtt-bridge.json`)
  - SecuBox → Network → MQTT IoT Bridge
  - Overview and Adapters submenu items

- ✅ **ACL Configuration** (`acl.d/luci-app-mqtt-bridge.json`)
  - Read permissions for all USB detection methods
  - Write permissions for configuration methods

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## 🔄 In Progress

### Testing & Validation
- ⏳ Run `./secubox-tools/validate-modules.sh`
- ⏳ Fix any permission issues with `./secubox-tools/fix-permissions.sh`
- ⏳ Local build testing with `./secubox-tools/local-build.sh`
- ⏳ Deploy to test router and verify USB detection

### Hardware Testing
- ⏳ Test with physical Zigbee adapter (CC2531 or ConBee II)
- ⏳ Test with Z-Wave stick (Aeotec Z-Stick)
- ⏳ Test with ModBus RTU adapter (FTDI FT232)
- ⏳ Verify auto-detection and health monitoring

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## 📋 Backlog / Future Enhancements

### Priority 1 - Core Functionality
- [ ] MQTT broker connection implementation
  - Connect to broker using mosquitto client library
  - Publish/subscribe to topics
  - Message buffering and retry logic

- [ ] Device pairing workflow
  - Zigbee permit join integration
  - Z-Wave inclusion/exclusion
  - ModBus slave discovery

- [ ] Message routing
  - Topic templates per adapter type
  - Payload transformation (JSON/binary)
  - Device state caching

### Priority 2 - Advanced Features
- [ ] Automation rules engine
  - Trigger on adapter health changes
  - Alert notifications (email/SMS)
  - Custom scripts on events

- [ ] Historical data storage
  - Message logging to SQLite
  - Statistics and analytics
  - Export to CSV/JSON

- [ ] Multi-broker support
  - Connect to multiple MQTT brokers
  - Bridge between brokers
  - Failover and redundancy

### Priority 3 - Integrations
- [ ] Home Assistant MQTT discovery
  - Auto-generate discovery messages
  - Entity registry management
  - State synchronization

- [ ] Zigbee2MQTT integration
  - Auto-configure from Zigbee2MQTT
  - Device passthrough mode
  - Coordinator selection

- [ ] Z-Wave JS integration
  - Z-Wave network management
  - Node inclusion/exclusion
  - Association configuration

### Priority 4 - UI/UX Improvements
- [ ] Device dashboard view
  - Per-device status cards
  - Recent messages per device
  - Quick actions (pair, unpair, configure)

- [ ] Live message viewer
  - Real-time MQTT message stream
  - Topic filtering
  - Publish test messages

- [ ] Configuration wizard
  - Step-by-step setup for new users
  - Adapter detection and import
  - Broker configuration assistant

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## 🐛 Known Issues

### Minor Issues
- None currently identified

### To Investigate
- Test USB device hotplug (plug/unplug during operation)
- Verify health monitoring updates in real-time
- Check serial port permissions on different OpenWrt versions

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## 🔧 Technical Debt

### Code Quality
- Add input validation to all RPC methods
- Improve error messages with actionable suggestions
- Add logging to USB detection library
- Write unit tests for VID:PID matching

### Performance
- Optimize USB scanning (cache results, debounce scans)
- Reduce API polling frequency with event-driven updates
- Implement WebSocket for real-time status updates

### Security
- Add authentication to MQTT broker configuration
- Sanitize all user inputs in RPC methods
- Validate serial port paths before access
- Implement rate limiting on USB scans

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## 📊 Implementation Statistics

| Metric | Count |
|--------|-------|
| **Version** | 0.5.0-1 |
| **Views** | 2 (overview, adapters) |
| **RPC Methods** | 7 (USB-focused) |
| **Supported Devices** | 17 (Zigbee: 6, Z-Wave: 3, ModBus: 4, Serial: 4) |
| **JavaScript Lines** | ~500 |
| **Shell Script Lines** | ~800 (RPCD + library) |
| **Documentation Lines** | 679 (README.md) |

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## 🚀 Next Steps

1. **Immediate** (v0.5.0 completion):
   - Run validation scripts
   - Fix any permission issues
   - Test on hardware router
   - Verify all USB detection works

2. **Short-term** (v0.5.1):
   - Implement MQTT broker connection
   - Add device pairing workflow
   - Create message routing logic

3. **Medium-term** (v0.6.0):
   - Add automation rules engine
   - Implement historical data storage
   - Create device dashboard view

4. **Long-term** (v1.0.0):
   - Complete Home Assistant integration
   - Add Zigbee2MQTT support
   - Implement Z-Wave JS integration

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## 📝 Notes

- **Module Disabled by Default**: Enable via SecuBox Modules page once backend daemon is implemented
- **USB Permissions**: RPCD script must be executable (755) to access /sys/bus/usb/devices/
- **Serial Ports**: /dev/ttyUSB* and /dev/ttyACM* require read/write permissions
- **Theme System**: All views follow SecuBox theme conventions with CSS variables
- **Backward Compatibility**: Legacy `/usr/sbin/mqtt-bridge-monitor` wrapper maintained for compatibility

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## 🔗 Resources

- **Module README**: `luci-app-mqtt-bridge/README.md`
- **Module Status**: `docs/module-status.md` (section: IoT & Integration)
- **API Documentation**: README.md § API Reference
- **Configuration Examples**: README.md § UCI Configuration

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*Last updated: 2025-12-30*
*Status: v0.5.0 Complete - Ready for validation and hardware testing*