# DLB Gatekeeper

A Node.js application for controlling a gate via Raspberry Pi GPIO.

## Features

- REST API for gate control
- Event logging
- Configurable settings
- GPIO control for relay
- Simple web interface

## Installation

1. Clone the repository
2. Install dependencies:
```bash
npm install
```
3. Copy `.env.example` to `.env` and configure your settings:
```bash
cp .env.example .env
```
4. Build the TypeScript code:
```bash
npm run build
```
5. Start the server:
```bash
npm start
```

## API Endpoints

- `POST /api/trigger` - Trigger the gate
- `GET /api/events` - Get recent gate events
- `GET /api/settings` - Get current settings
- `POST /api/settings` - Update settings

## Hardware Setup

- Connect relay control to GPIO pin (default: 18)
- Ensure proper power supply for the relay
- Ground connections as needed

## Development

Run in development mode with auto-reload:
```bash
npm run dev
```

## Security

- JWT authentication (to be implemented)
- Rate limiting enabled
- CORS protection
- Helmet security headers