# Meshtastic MQTT Dashboard - Project Summary

## Overview

A complete, production-ready Node.js web application for monitoring and managing Meshtastic mesh networks via MQTT. This is a fully self-contained solution similar to the Home Assistant integration.

## What Was Built

### Backend (Node.js + Express)

#### Core Server (`src/server.js`)
- Express.js web server
- Session management with express-session
- Security middleware (Helmet, CORS, rate limiting)
- Graceful shutdown handling
- Error handling middleware

#### Authentication System (`src/auth/`)
- User registration and login with bcrypt password hashing
- Session-based authentication
- Activity logging for security auditing
- User creation script for initial setup

#### Database Layer (`src/database/`)
- SQLite database with better-sqlite3
- Comprehensive schema for:
  - Users and authentication
  - Meshtastic nodes
  - GPS positions
  - Text messages
  - Device telemetry
  - Activity logs
- Prepared statements for performance and security
- Automatic database initialization

#### MQTT Client (`src/mqtt/`)
- Automatic connection to Meshtastic MQTT broker
- Real-time message processing
- Support for multiple message types:
  - Text messages
  - Position updates
  - Node information
  - Telemetry data
- Message publishing for sending to mesh
- Automatic reconnection handling

#### REST API (`src/routes/api.js`)
Complete API with endpoints for:
- Authentication (login/logout)
- Node management (list all, get details)
- Position tracking (latest positions, history)
- Message history (view and send)
- Telemetry data
- Statistics dashboard
- Data purging

#### Background Services (`src/services/`)
- Cron service for scheduled tasks
- Automatic data purging based on retention policy
- Configurable schedule (default: daily at 2 AM)

#### Logging System (`src/utils/`)
- Winston-based structured logging
- Multiple log files (combined, errors)
- Log rotation
- Configurable log levels

#### Configuration (`src/config/`)
- Environment variable based configuration
- Secure defaults
- Easy customization for different deployments

### Frontend (Vanilla JavaScript)

#### Modern Web Interface (`public/`)
- **Responsive Design**: Works on desktop, tablet, and mobile
- **Clean UI**: Modern styling with CSS variables for easy theming
- **No Framework Dependencies**: Pure JavaScript for simplicity

#### Features:
1. **Login Screen**
   - Secure authentication
   - Form validation
   - Error handling

2. **Dashboard Overview**
   - Real-time statistics cards
   - Recent message feed
   - MQTT connection status indicator

3. **Interactive Map**
   - Leaflet.js integration
   - GPS position tracking
   - Clickable markers with node info
   - Auto-fit to show all nodes

4. **Message Management**
   - Send messages to mesh network
   - View message history with metadata
   - Channel selection
   - Signal quality indicators (SNR, RSSI)

5. **Node Monitoring**
   - Grid view of all nodes
   - Online/offline status
   - Detailed node information modal
   - Battery levels, signal strength
   - Hardware information

6. **Settings Panel**
   - Manual data purging
   - Configurable retention periods
   - Application information

### Security Features

- Password hashing with bcrypt (10 rounds)
- Session-based authentication
- HTTP security headers (Helmet)
- Rate limiting on API endpoints
- CSRF protection ready
- Activity logging for audit trails
- Secure session cookies

### Database Schema

**Tables Created:**
1. `users` - User accounts
2. `nodes` - Meshtastic node information
3. `positions` - GPS location history
4. `messages` - Text message history
5. `telemetry` - Device telemetry data
6. `activity_log` - User activity tracking

**Indexes Created:**
- Node ID lookups
- Position timestamps
- Message timestamps and senders
- Telemetry tracking

### Configuration Options

All configurable via `.env`:
- Server port
- MQTT broker settings
- Session secrets
- Data retention policies
- Cron schedules
- Log levels
- Rate limiting

## File Structure

```
meshtastic-mqtt-dashboard/
├── src/
│   ├── auth/
│   │   └── auth.js                 # Authentication logic
│   ├── config/
│   │   └── config.js               # Configuration management
│   ├── database/
│   │   ├── db.js                   # Database initialization
│   │   └── queries.js              # Prepared statements
│   ├── mqtt/
│   │   └── client.js               # MQTT client implementation
│   ├── routes/
│   │   └── api.js                  # REST API endpoints
│   ├── scripts/
│   │   └── createUser.js           # User creation utility
│   ├── services/
│   │   └── cron.js                 # Background job scheduler
│   ├── utils/
│   │   └── logger.js               # Logging utility
│   └── server.js                   # Main application entry
├── public/
│   ├── css/
│   │   └── style.css               # Modern UI styles
│   ├── js/
│   │   └── app.js                  # Frontend application
│   └── index.html                  # Single page app
├── .env.example                    # Environment template
├── .gitignore                      # Git ignore rules
├── package.json                    # Dependencies
├── README.md                       # Full documentation
├── QUICKSTART.md                   # Quick start guide
└── PROJECT_SUMMARY.md              # This file
```

## Technology Stack

### Backend
- **Node.js**: Runtime environment
- **Express.js**: Web framework
- **better-sqlite3**: Fast SQLite database
- **mqtt**: MQTT client library
- **bcryptjs**: Password hashing
- **express-session**: Session management
- **winston**: Logging
- **node-cron**: Job scheduling
- **helmet**: Security headers
- **express-rate-limit**: Rate limiting

### Frontend
- **Vanilla JavaScript**: No frameworks, pure JS
- **Leaflet.js**: Interactive maps
- **OpenStreetMap**: Map tiles
- **CSS3**: Modern styling with variables
- **Fetch API**: HTTP requests

### Database
- **SQLite**: Embedded database
- **WAL mode**: Better concurrency

## Key Features Implemented

✅ MQTT automatic connection and message storage
✅ SQLite database with comprehensive schema
✅ User authentication with bcrypt
✅ Session management
✅ REST API for all operations
✅ Interactive map with GPS tracking
✅ Message viewing and sending
✅ Node monitoring and metadata
✅ Automatic data purging with cron
✅ Manual data purging button
✅ Activity logging
✅ Comprehensive error handling
✅ Security best practices
✅ Modern, responsive UI
✅ Real-time statistics
✅ Configurable via environment variables
✅ Complete documentation

## Getting Started

1. Install dependencies: `npm install`
2. Copy environment file: `cp .env.example .env`
3. Edit `.env` with your settings
4. Create user: `npm run create-user`
5. Start server: `npm start`
6. Open browser: `http://localhost:3000`

See `QUICKSTART.md` for detailed instructions.

## Production Ready

This application is production-ready with:
- Proper error handling
- Security best practices
- Logging and monitoring
- Graceful shutdown
- Session management
- Rate limiting
- Input validation
- SQL injection protection (prepared statements)
- XSS protection
- CSRF ready

## Future Enhancement Ideas

- WebSocket support for real-time updates
- User management interface
- Email notifications
- Export data to CSV/JSON
- Advanced filtering and search
- Grafana integration
- Multi-user permissions
- Custom alerts and triggers
- Mobile app (PWA)

## License

MIT License - Free to use, modify, and distribute

## Support

See README.md for troubleshooting and detailed documentation.

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**Built with ❤️ for the Meshtastic community**